Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux

Pull ARM updates from Russell King:

- Updates to AMBA bus subsystem to drop .owner struct device_driver
initialisations, moving that to code instead.

- Add LPAE privileged-access-never support

- Add support for Clang CFI

- clkdev: report over-sized device or connection strings

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: (36 commits)
ARM: 9398/1: Fix userspace enter on LPAE with CC_OPTIMIZE_FOR_SIZE=y
clkdev: report over-sized strings when creating clkdev entries
ARM: 9393/1: mm: Use conditionals for CFI branches
ARM: 9392/2: Support CLANG CFI
ARM: 9391/2: hw_breakpoint: Handle CFI breakpoints
ARM: 9390/2: lib: Annotate loop delay instructions for CFI
ARM: 9389/2: mm: Define prototypes for all per-processor calls
ARM: 9388/2: mm: Type-annotate all per-processor assembly routines
ARM: 9387/2: mm: Rewrite cacheflush vtables in CFI safe C
ARM: 9386/2: mm: Use symbol alias for cache functions
ARM: 9385/2: mm: Type-annotate all cache assembly routines
ARM: 9384/2: mm: Make tlbflush routines CFI safe
ARM: 9382/1: ftrace: Define ftrace_stub_graph
ARM: 9358/2: Implement PAN for LPAE by TTBR0 page table walks disablement
ARM: 9357/2: Reduce the number of #ifdef CONFIG_CPU_SW_DOMAIN_PAN
ARM: 9356/2: Move asm statements accessing TTBCR into C functions
ARM: 9355/2: Add TTBCR_* definitions to pgtable-3level-hwdef.h
ARM: 9379/1: coresight: tpda: drop owner assignment
ARM: 9378/1: coresight: etm4x: drop owner assignment
ARM: 9377/1: hwrng: nomadik: drop owner assignment
...

arch/arm/Kconfig

···
 	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
 	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7
 	select ARCH_SUPPORTS_ATOMIC_RMW
+	select ARCH_SUPPORTS_CFI_CLANG
 	select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE
 	select ARCH_SUPPORTS_PER_VMA_LOCK
 	select ARCH_USE_BUILTIN_BSWAP
···
 	  consumed by page tables.  Setting this option will allow
 	  user-space 2nd level page tables to reside in high memory.
 
-config CPU_SW_DOMAIN_PAN
-	bool "Enable use of CPU domains to implement privileged no-access"
-	depends on MMU && !ARM_LPAE
+config ARM_PAN
+	bool "Enable privileged no-access"
+	depends on MMU
 	default y
 	help
 	  Increase kernel security by ensuring that normal kernel accesses
···
 	  by ensuring that magic values (such as LIST_POISON) will always
 	  fault when dereferenced.
 
+	  The implementation uses CPU domains when !CONFIG_ARM_LPAE and
+	  disabling of TTBR0 page table walks with CONFIG_ARM_LPAE.
+
+config CPU_SW_DOMAIN_PAN
+	def_bool y
+	depends on ARM_PAN && !ARM_LPAE
+	help
+	  Enable use of CPU domains to implement privileged no-access.
+
 	  CPUs with low-vector mappings use a best-efforts implementation.
 	  Their lower 1MB needs to remain accessible for the vectors, but
 	  the remainder of userspace will become appropriately inaccessible.
+
+config CPU_TTBR0_PAN
+	def_bool y
+	depends on ARM_PAN && ARM_LPAE
+	help
+	  Enable privileged no-access by disabling TTBR0 page table walks when
+	  running in kernel mode.
 
 config HW_PERF_EVENTS
 	def_bool y

arch/arm/include/asm/assembler.h

···
 #include <asm/opcodes-virt.h>
 #include <asm/asm-offsets.h>
 #include <asm/page.h>
+#include <asm/pgtable.h>
 #include <asm/thread_info.h>
 #include <asm/uaccess-asm.h>
 

arch/arm/include/asm/glue-cache.h

···
 # define MULTI_CACHE 1
 #endif
 
+#ifdef CONFIG_CPU_CACHE_NOP
+#  define MULTI_CACHE 1
+#endif
+
 #if defined(CONFIG_CPU_V7M)
 #  define MULTI_CACHE 1
 #endif
···
 #error Unknown cache maintenance model
 #endif
 
-#ifndef __ASSEMBLER__
-static inline void nop_flush_icache_all(void) { }
-static inline void nop_flush_kern_cache_all(void) { }
-static inline void nop_flush_kern_cache_louis(void) { }
-static inline void nop_flush_user_cache_all(void) { }
-static inline void nop_flush_user_cache_range(unsigned long a,
-		unsigned long b, unsigned int c) { }
-
-static inline void nop_coherent_kern_range(unsigned long a, unsigned long b) { }
-static inline int nop_coherent_user_range(unsigned long a,
-		unsigned long b) { return 0; }
-static inline void nop_flush_kern_dcache_area(void *a, size_t s) { }
-
-static inline void nop_dma_flush_range(const void *a, const void *b) { }
-
-static inline void nop_dma_map_area(const void *s, size_t l, int f) { }
-static inline void nop_dma_unmap_area(const void *s, size_t l, int f) { }
-#endif
-
 #ifndef MULTI_CACHE
 #define __cpuc_flush_icache_all		__glue(_CACHE,_flush_icache_all)
 #define __cpuc_flush_kern_all		__glue(_CACHE,_flush_kern_cache_all)
+/* This function only has a dedicated assembly callback on the v7 cache */
+#ifdef CONFIG_CPU_CACHE_V7
 #define __cpuc_flush_kern_louis		__glue(_CACHE,_flush_kern_cache_louis)
+#else
+#define __cpuc_flush_kern_louis		__glue(_CACHE,_flush_kern_cache_all)
+#endif
 #define __cpuc_flush_user_all		__glue(_CACHE,_flush_user_cache_all)
 #define __cpuc_flush_user_range		__glue(_CACHE,_flush_user_cache_range)
 #define __cpuc_coherent_kern_range	__glue(_CACHE,_coherent_kern_range)

arch/arm/include/asm/hw_breakpoint.h

···
 #define ARM_DSCR_MOE(x)			((x >> 2) & 0xf)
 #define ARM_ENTRY_BREAKPOINT		0x1
 #define ARM_ENTRY_ASYNC_WATCHPOINT	0x2
+#define ARM_ENTRY_CFI_BREAKPOINT	0x3
 #define ARM_ENTRY_SYNC_WATCHPOINT	0xa
 
 /* DSCR monitor/halting bits. */

arch/arm/include/asm/pgtable-3level-hwdef.h

···
 #define PHYS_MASK_SHIFT		(40)
 #define PHYS_MASK		((1ULL << PHYS_MASK_SHIFT) - 1)
 
+#ifndef CONFIG_CPU_TTBR0_PAN
 /*
  * TTBR0/TTBR1 split (PAGE_OFFSET):
  *   0x40000000: T0SZ = 2, T1SZ = 0 (not used)
···
 #endif
 
 #define TTBR1_SIZE	(((PAGE_OFFSET >> 30) - 1) << 16)
+#else
+/*
+ * With CONFIG_CPU_TTBR0_PAN enabled, TTBR1 is only used during uaccess
+ * disabled regions when TTBR0 is disabled.
+ */
+#define TTBR1_OFFSET	0			/* pointing to swapper_pg_dir */
+#define TTBR1_SIZE	0			/* TTBR1 size controlled via TTBCR.T0SZ */
+#endif
+
+/*
+ * TTBCR register bits.
+ */
+#define TTBCR_EAE		(1 << 31)
+#define TTBCR_IMP		(1 << 30)
+#define TTBCR_SH1_MASK		(3 << 28)
+#define TTBCR_ORGN1_MASK	(3 << 26)
+#define TTBCR_IRGN1_MASK	(3 << 24)
+#define TTBCR_EPD1		(1 << 23)
+#define TTBCR_A1		(1 << 22)
+#define TTBCR_T1SZ_MASK		(7 << 16)
+#define TTBCR_SH0_MASK		(3 << 12)
+#define TTBCR_ORGN0_MASK	(3 << 10)
+#define TTBCR_IRGN0_MASK	(3 << 8)
+#define TTBCR_EPD0		(1 << 7)
+#define TTBCR_T0SZ_MASK		(7 << 0)
 
 #endif

arch/arm/include/asm/proc-fns.h

···
 	})
 #endif
 
+static inline unsigned int cpu_get_ttbcr(void)
+{
+	unsigned int ttbcr;
+	asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr));
+	return ttbcr;
+}
+
+static inline void cpu_set_ttbcr(unsigned int ttbcr)
+{
+	asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr) : "memory");
+}
+
 #else	/*!CONFIG_MMU */
 
 #define cpu_switch_mm(pgd,mm)	{ }

arch/arm/include/asm/ptrace.h

···
 struct svc_pt_regs {
 	struct pt_regs regs;
 	u32 dacr;
+	u32 ttbcr;
 };
 
 #define to_svc_pt_regs(r) container_of(r, struct svc_pt_regs, regs)

arch/arm/include/asm/uaccess-asm.h

···
 #endif
 	.endm
 
+#if defined(CONFIG_CPU_SW_DOMAIN_PAN)
+
 	.macro	uaccess_disable, tmp, isb=1
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
 	/*
 	 * Whenever we re-enter userspace, the domains should always be
 	 * set appropriately.
···
 	.if	\isb
 	instr_sync
 	.endif
-#endif
 	.endm
 
 	.macro	uaccess_enable, tmp, isb=1
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
 	/*
 	 * Whenever we re-enter userspace, the domains should always be
 	 * set appropriately.
···
 	.if	\isb
 	instr_sync
 	.endif
-#endif
 	.endm
+
+#elif defined(CONFIG_CPU_TTBR0_PAN)
+
+	.macro	uaccess_disable, tmp, isb=1
+	/*
+	 * Disable TTBR0 page table walks (EDP0 = 1), use the reserved ASID
+	 * from TTBR1 (A1 = 1) and enable TTBR1 page table walks for kernel
+	 * addresses by reducing TTBR0 range to 32MB (T0SZ = 7).
+	 */
+	mrc	p15, 0, \tmp, c2, c0, 2		@ read TTBCR
+	orr	\tmp, \tmp, #TTBCR_EPD0 | TTBCR_T0SZ_MASK
+	orr	\tmp, \tmp, #TTBCR_A1
+	mcr	p15, 0, \tmp, c2, c0, 2		@ write TTBCR
+	.if	\isb
+	instr_sync
+	.endif
+	.endm
+
+	.macro	uaccess_enable, tmp, isb=1
+	/*
+	 * Enable TTBR0 page table walks (T0SZ = 0, EDP0 = 0) and ASID from
+	 * TTBR0 (A1 = 0).
+	 */
+	mrc	p15, 0, \tmp, c2, c0, 2		@ read TTBCR
+	bic	\tmp, \tmp, #TTBCR_EPD0 | TTBCR_T0SZ_MASK
+	bic	\tmp, \tmp, #TTBCR_A1
+	mcr	p15, 0, \tmp, c2, c0, 2		@ write TTBCR
+	.if	\isb
+	instr_sync
+	.endif
+	.endm
+
+#else
+
+	.macro	uaccess_disable, tmp, isb=1
+	.endm
+
+	.macro	uaccess_enable, tmp, isb=1
+	.endm
+
+#endif
 
 #if defined(CONFIG_CPU_SW_DOMAIN_PAN) || defined(CONFIG_CPU_USE_DOMAINS)
 #define DACR(x...)	x
 #else
 #define DACR(x...)
+#endif
+
+#ifdef CONFIG_CPU_TTBR0_PAN
+#define PAN(x...)	x
+#else
+#define PAN(x...)
 #endif
 
 	/*
···
 	.macro	uaccess_entry, tsk, tmp0, tmp1, tmp2, disable
  DACR(	mrc	p15, 0, \tmp0, c3, c0, 0)
  DACR(	str	\tmp0, [sp, #SVC_DACR])
+ PAN(	mrc	p15, 0, \tmp0, c2, c0, 2)
+ PAN(	str	\tmp0, [sp, #SVC_TTBCR])
 	.if \disable && IS_ENABLED(CONFIG_CPU_SW_DOMAIN_PAN)
 	/* kernel=client, user=no access */
 	mov	\tmp2, #DACR_UACCESS_DISABLE
···
 	.macro	uaccess_exit, tsk, tmp0, tmp1
  DACR(	ldr	\tmp0, [sp, #SVC_DACR])
  DACR(	mcr	p15, 0, \tmp0, c3, c0, 0)
+ PAN(	ldr	\tmp0, [sp, #SVC_TTBCR])
+ PAN(	mcr	p15, 0, \tmp0, c2, c0, 2)
 	.endm
 
 #undef DACR
+#undef PAN
 
 #endif /* __ASM_UACCESS_ASM_H__ */

arch/arm/include/asm/uaccess.h

···
 #include <asm/domain.h>
 #include <asm/unaligned.h>
 #include <asm/unified.h>
+#include <asm/pgtable.h>
+#include <asm/proc-fns.h>
 #include <asm/compiler.h>
 
 #include <asm/extable.h>
···
  * perform such accesses (eg, via list poison values) which could then
  * be exploited for priviledge escalation.
  */
+#if defined(CONFIG_CPU_SW_DOMAIN_PAN)
+
 static __always_inline unsigned int uaccess_save_and_enable(void)
 {
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
 	unsigned int old_domain = get_domain();
 
 	/* Set the current domain access to permit user accesses */
···
 		   domain_val(DOMAIN_USER, DOMAIN_CLIENT));
 
 	return old_domain;
-#else
-	return 0;
-#endif
 }
 
 static __always_inline void uaccess_restore(unsigned int flags)
 {
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
 	/* Restore the user access mask */
 	set_domain(flags);
-#endif
 }
+
+#elif defined(CONFIG_CPU_TTBR0_PAN)
+
+static __always_inline unsigned int uaccess_save_and_enable(void)
+{
+	unsigned int old_ttbcr = cpu_get_ttbcr();
+
+	/*
+	 * Enable TTBR0 page table walks (T0SZ = 0, EDP0 = 0) and ASID from
+	 * TTBR0 (A1 = 0).
+	 */
+	cpu_set_ttbcr(old_ttbcr & ~(TTBCR_A1 | TTBCR_EPD0 | TTBCR_T0SZ_MASK));
+	isb();
+
+	return old_ttbcr;
+}
+
+static inline void uaccess_restore(unsigned int flags)
+{
+	cpu_set_ttbcr(flags);
+	isb();
+}
+
+#else
+
+static inline unsigned int uaccess_save_and_enable(void)
+{
+	return 0;
+}
+
+static inline void uaccess_restore(unsigned int flags)
+{
+}
+
+#endif
 
 /*
  * These two are intentionally not defined anywhere - if the kernel

arch/arm/kernel/asm-offsets.c

···
   DEFINE(S_OLD_R0,		offsetof(struct pt_regs, ARM_ORIG_r0));
   DEFINE(PT_REGS_SIZE,		sizeof(struct pt_regs));
   DEFINE(SVC_DACR,		offsetof(struct svc_pt_regs, dacr));
+  DEFINE(SVC_TTBCR,		offsetof(struct svc_pt_regs, ttbcr));
   DEFINE(SVC_REGS_SIZE,		sizeof(struct svc_pt_regs));
   BLANK();
   DEFINE(SIGFRAME_RC3_OFFSET,	offsetof(struct sigframe, retcode[3]));

arch/arm/kernel/entry-ftrace.S

···
 	ret	lr
 ENDPROC(ftrace_stub)
 
+ENTRY(ftrace_stub_graph)
+	ret	lr
+ENDPROC(ftrace_stub_graph)
+
 #ifdef CONFIG_DYNAMIC_FTRACE
 
 	__INIT

arch/arm/kernel/hw_breakpoint.c

···
 #include <linux/perf_event.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/smp.h>
+#include <linux/cfi.h>
 #include <linux/cpu_pm.h>
 #include <linux/coresight.h>
 
···
 	watchpoint_single_step_handler(addr);
 }
 
+#ifdef CONFIG_CFI_CLANG
+static void hw_breakpoint_cfi_handler(struct pt_regs *regs)
+{
+	/*
+	 * TODO: implementing target and type to pass to CFI using the more
+	 * elaborate report_cfi_failure() requires compiler work. To be able
+	 * to properly extract target information the compiler needs to
+	 * emit a stable instructions sequence for the CFI checks so we can
+	 * decode the instructions preceding the trap and figure out which
+	 * registers were used.
+	 */
+
+	switch (report_cfi_failure_noaddr(regs, instruction_pointer(regs))) {
+	case BUG_TRAP_TYPE_BUG:
+		die("Oops - CFI", regs, 0);
+		break;
+	case BUG_TRAP_TYPE_WARN:
+		/* Skip the breaking instruction */
+		instruction_pointer(regs) += 4;
+		break;
+	default:
+		die("Unknown CFI error", regs, 0);
+		break;
+	}
+}
+#else
+static void hw_breakpoint_cfi_handler(struct pt_regs *regs)
+{
+}
+#endif
+
 /*
  * Called from either the Data Abort Handler [watchpoint] or the
  * Prefetch Abort Handler [breakpoint] with interrupts disabled.
···
 		fallthrough;
 	case ARM_ENTRY_SYNC_WATCHPOINT:
 		watchpoint_handler(addr, fsr, regs);
+		break;
+	case ARM_ENTRY_CFI_BREAKPOINT:
+		hw_breakpoint_cfi_handler(regs);
 		break;
 	default:
 		ret = 1; /* Unhandled fault. */

arch/arm/kernel/suspend.c

···
 #include <asm/smp_plat.h>
 #include <asm/suspend.h>
 #include <asm/tlbflush.h>
+#include <asm/uaccess.h>
 
 extern int __cpu_suspend(unsigned long, int (*)(unsigned long), u32 cpuid);
 extern void cpu_resume_mmu(void);
···
 
 	if (!idmap_pgd)
 		return -EINVAL;
+
+	/*
+	 * Needed for the MMU disabling/enabing code to be able to run from
+	 * TTBR0 addresses.
+	 */
+	if (IS_ENABLED(CONFIG_CPU_TTBR0_PAN))
+		uaccess_save_and_enable();
 
 	/*
 	 * Function graph tracer state gets incosistent when the kernel

arch/arm/lib/csumpartialcopyuser.S

···
 
 		.text
 
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+#if defined(CONFIG_CPU_SW_DOMAIN_PAN)
+
 		.macro	save_regs
 		mrc	p15, 0, ip, c3, c0, 0
 		stmfd	sp!, {r1, r2, r4 - r8, ip, lr}
···
 		mcr	p15, 0, ip, c3, c0, 0
 		ret	lr
 		.endm
+
+#elif defined(CONFIG_CPU_TTBR0_PAN)
+
+		.macro	save_regs
+		mrc	p15, 0, ip, c2, c0, 2		@ read TTBCR
+		stmfd	sp!, {r1, r2, r4 - r8, ip, lr}
+		uaccess_enable ip
+		.endm
+
+		.macro	load_regs
+		ldmfd	sp!, {r1, r2, r4 - r8, ip, lr}
+		mcr	p15, 0, ip, c2, c0, 2		@ restore TTBCR
+		ret	lr
+		.endm
+
 #else
+
 		.macro	save_regs
 		stmfd	sp!, {r1, r2, r4 - r8, lr}
 		.endm
···
 		.macro	load_regs
 		ldmfd	sp!, {r1, r2, r4 - r8, pc}
 		.endm
+
 #endif
 
 		.macro	load1b,	reg1

arch/arm/lib/delay-loop.S

···
  *  Copyright (C) 1995, 1996 Russell King
  */
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/delay.h>
 
···
  * HZ  <= 1000
  */
 
-ENTRY(__loop_udelay)
+SYM_TYPED_FUNC_START(__loop_udelay)
 		ldr	r2, .LC1
 		mul	r0, r2, r0		@ r0 = delay_us * UDELAY_MULT
-ENTRY(__loop_const_udelay)			@ 0 <= r0 <= 0xfffffaf0
+		b	__loop_const_udelay
+SYM_FUNC_END(__loop_udelay)
+
+SYM_TYPED_FUNC_START(__loop_const_udelay)	@ 0 <= r0 <= 0xfffffaf0
 		ldr	r2, .LC0
 		ldr	r2, [r2]
 		umull	r1, r0, r2, r0		@ r0-r1 = r0 * loops_per_jiffy
 		adds	r1, r1, #0xffffffff	@ rounding up ...
 		adcs	r0, r0, r0		@ and right shift by 31
 		reteq	lr
+		b	__loop_delay
+SYM_FUNC_END(__loop_const_udelay)
 
 		.align 3
 
 @ Delay routine
-ENTRY(__loop_delay)
+SYM_TYPED_FUNC_START(__loop_delay)
 		subs	r0, r0, #1
 #if 0
 		retls	lr
···
 #endif
 		bhi	__loop_delay
 		ret	lr
-ENDPROC(__loop_udelay)
-ENDPROC(__loop_const_udelay)
-ENDPROC(__loop_delay)
+SYM_FUNC_END(__loop_delay)

arch/arm/mm/Makefile

···
 obj-$(CONFIG_CPU_CACHE_FA)	+= cache-fa.o
 obj-$(CONFIG_CPU_CACHE_NOP)	+= cache-nop.o
 obj-$(CONFIG_CPU_CACHE_V7M)	+= cache-v7m.o
+obj-y				+= cache.o
 
 obj-$(CONFIG_CPU_COPY_V4WT)	+= copypage-v4wt.o
 obj-$(CONFIG_CPU_COPY_V4WB)	+= copypage-v4wb.o
···
 obj-$(CONFIG_CPU_TLB_V6)	+= tlb-v6.o
 obj-$(CONFIG_CPU_TLB_V7)	+= tlb-v7.o
 obj-$(CONFIG_CPU_TLB_FA)	+= tlb-fa.o
+obj-y				+= tlb.o
 
 obj-$(CONFIG_CPU_ARM7TDMI)	+= proc-arm7tdmi.o
 obj-$(CONFIG_CPU_ARM720T)	+= proc-arm720.o
···
 obj-$(CONFIG_CPU_V6K)		+= proc-v6.o
 obj-$(CONFIG_CPU_V7)		+= proc-v7.o proc-v7-bugs.o
 obj-$(CONFIG_CPU_V7M)		+= proc-v7m.o
+obj-$(CONFIG_CFI_CLANG)		+= proc.o
 
 obj-$(CONFIG_OUTER_CACHE)	+= l2c-common.o
 obj-$(CONFIG_CACHE_B15_RAC)	+= cache-b15-rac.o

arch/arm/mm/cache-b15-rac.c

···
  * Copyright (C) 2015-2016 Broadcom
  */
 
+#include <linux/cfi_types.h>
 #include <linux/err.h>
 #include <linux/spinlock.h>
 #include <linux/io.h>

arch/arm/mm/cache-fa.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(fa_flush_icache_all)
+SYM_TYPED_FUNC_START(fa_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(fa_flush_icache_all)
+SYM_FUNC_END(fa_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(fa_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(fa_flush_user_cache_all, fa_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(fa_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(fa_flush_kern_cache_all)
 	mov	ip, #0
 	mov	r2, #VM_EXEC
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain write buffer
 	mcrne	p15, 0, ip, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(fa_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive, page aligned)
  *	- flags	- vma_area_struct flags describing address space
  */
-ENTRY(fa_flush_user_cache_range)
+SYM_TYPED_FUNC_START(fa_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT		@ total size >= limit?
···
 	mcrne	p15, 0, ip, c7, c10, 4		@ data write barrier
 	mcrne	p15, 0, ip, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(fa_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(fa_coherent_kern_range)
-	/* fall through */
+SYM_TYPED_FUNC_START(fa_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	fa_coherent_user_range
+#endif
+SYM_FUNC_END(fa_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(fa_coherent_user_range)
+SYM_TYPED_FUNC_START(fa_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
 	mcr	p15, 0, r0, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(fa_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- size of region
  */
-ENTRY(fa_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(fa_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean & invalidate D line
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(fa_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start   - virtual start address of region
  *	- end     - virtual end address of region
  */
-ENTRY(fa_dma_flush_range)
+SYM_TYPED_FUNC_START(fa_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean & invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mov	r0, #0	
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(fa_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(fa_dma_map_area)
+SYM_TYPED_FUNC_START(fa_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	fa_dma_clean_range
 	bcs	fa_dma_inv_range
 	b	fa_dma_flush_range
-ENDPROC(fa_dma_map_area)
+SYM_FUNC_END(fa_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(fa_dma_unmap_area)
+SYM_TYPED_FUNC_START(fa_dma_unmap_area)
 	ret	lr
-ENDPROC(fa_dma_unmap_area)
-
-	.globl	fa_flush_kern_cache_louis
-	.equ	fa_flush_kern_cache_louis, fa_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions fa
+SYM_FUNC_END(fa_dma_unmap_area)

arch/arm/mm/cache-nop.S

···
 /* SPDX-License-Identifier: GPL-2.0-only */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 
 #include "proc-macros.S"
 
-ENTRY(nop_flush_icache_all)
+/*
+ * These are all open-coded instead of aliased, to make clear
+ * what is going on here: all functions are stubbed out.
+ */
+SYM_TYPED_FUNC_START(nop_flush_icache_all)
 	ret	lr
-ENDPROC(nop_flush_icache_all)
+SYM_FUNC_END(nop_flush_icache_all)
 
-	.globl nop_flush_kern_cache_all
-	.equ nop_flush_kern_cache_all, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_kern_cache_all)
+	ret	lr
+SYM_FUNC_END(nop_flush_kern_cache_all)
 
-	.globl nop_flush_kern_cache_louis
-	.equ nop_flush_kern_cache_louis, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_user_cache_all)
+	ret	lr
+SYM_FUNC_END(nop_flush_user_cache_all)
 
-	.globl nop_flush_user_cache_all
-	.equ nop_flush_user_cache_all, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_user_cache_range)
+	ret	lr
+SYM_FUNC_END(nop_flush_user_cache_range)
 
-	.globl nop_flush_user_cache_range
-	.equ nop_flush_user_cache_range, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_coherent_kern_range)
+	ret	lr
+SYM_FUNC_END(nop_coherent_kern_range)
 
-	.globl nop_coherent_kern_range
-	.equ nop_coherent_kern_range, nop_flush_icache_all
-
-ENTRY(nop_coherent_user_range)
+SYM_TYPED_FUNC_START(nop_coherent_user_range)
 	mov	r0, 0
 	ret	lr
-ENDPROC(nop_coherent_user_range)
+SYM_FUNC_END(nop_coherent_user_range)
 
-	.globl nop_flush_kern_dcache_area
-	.equ nop_flush_kern_dcache_area, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_kern_dcache_area)
+	ret	lr
+SYM_FUNC_END(nop_flush_kern_dcache_area)
 
-	.globl nop_dma_flush_range
-	.equ nop_dma_flush_range, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_dma_flush_range)
+	ret	lr
+SYM_FUNC_END(nop_dma_flush_range)
 
-	.globl nop_dma_map_area
-	.equ nop_dma_map_area, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_dma_map_area)
+	ret	lr
+SYM_FUNC_END(nop_dma_map_area)
 
-	.globl nop_dma_unmap_area
-	.equ nop_dma_unmap_area, nop_flush_icache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions nop
+SYM_TYPED_FUNC_START(nop_dma_unmap_area)
+	ret	lr
+SYM_FUNC_END(nop_dma_unmap_area)

arch/arm/mm/cache-v4.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
 #include "proc-macros.S"
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(v4_flush_icache_all)
+SYM_TYPED_FUNC_START(v4_flush_icache_all)
 	ret	lr
-ENDPROC(v4_flush_icache_all)
+SYM_FUNC_END(v4_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *
  *	- mm	- mm_struct describing address space
  */
-ENTRY(v4_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(v4_flush_user_cache_all, v4_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(v4_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v4_flush_kern_cache_all)
 #ifdef CONFIG_CPU_CP15
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c7, 0		@ flush ID cache
 	ret	lr
 #else
-	/* FALLTHROUGH */
+	ret	lr
 #endif
+SYM_FUNC_END(v4_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive, may not be aligned)
  *	- flags	- vma_area_struct flags describing address space
  */
-ENTRY(v4_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v4_flush_user_cache_range)
 #ifdef CONFIG_CPU_CP15
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ flush ID cache
 	ret	lr
 #else
-	/* FALLTHROUGH */
+	ret	lr
 #endif
+SYM_FUNC_END(v4_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(v4_coherent_kern_range)
+	ret	lr
+SYM_FUNC_END(v4_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4_coherent_user_range)
+SYM_TYPED_FUNC_START(v4_coherent_user_range)
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(v4_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v4_flush_kern_dcache_area)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(v4_flush_kern_dcache_area)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v4_dma_flush_range
+#endif
+SYM_FUNC_END(v4_flush_kern_dcache_area)
 
 /*
  *	dma_flush_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4_dma_flush_range)
+SYM_TYPED_FUNC_START(v4_dma_flush_range)
 #ifdef CONFIG_CPU_CP15
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c7, 0		@ flush ID cache
 #endif
 	ret	lr
+SYM_FUNC_END(v4_dma_flush_range)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4_dma_unmap_area)
+SYM_TYPED_FUNC_START(v4_dma_unmap_area)
 	teq	r2, #DMA_TO_DEVICE
 	bne	v4_dma_flush_range
-	/* FALLTHROUGH */
+	ret	lr
+SYM_FUNC_END(v4_dma_unmap_area)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4_dma_map_area)
+SYM_TYPED_FUNC_START(v4_dma_map_area)
 	ret	lr
-ENDPROC(v4_dma_unmap_area)
-ENDPROC(v4_dma_map_area)
-
-	.globl	v4_flush_kern_cache_louis
-	.equ	v4_flush_kern_cache_louis, v4_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v4
+SYM_FUNC_END(v4_dma_map_area)

arch/arm/mm/cache-v4wb.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
 #include "proc-macros.S"
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(v4wb_flush_icache_all)
+SYM_TYPED_FUNC_START(v4wb_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(v4wb_flush_icache_all)
+SYM_FUNC_END(v4wb_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(v4wb_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(v4wb_flush_user_cache_all, v4wb_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(v4wb_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v4wb_flush_kern_cache_all)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 __flush_whole_cache:
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(v4wb_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive, page aligned)
  *	- flags	- vma_area_struct flags describing address space
  */
-ENTRY(v4wb_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v4wb_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	tst	r2, #VM_EXEC			@ executable region?
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(v4wb_flush_user_cache_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v4wb_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(v4wb_flush_kern_dcache_area)
 	add	r1, r0, r1
-	/* fall through */
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v4wb_coherent_user_range
+#endif
+SYM_FUNC_END(v4wb_flush_kern_dcache_area)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4wb_coherent_kern_range)
-	/* fall through */
+SYM_TYPED_FUNC_START(v4wb_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v4wb_coherent_user_range
+#endif
+SYM_FUNC_END(v4wb_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4wb_coherent_user_range)
+SYM_TYPED_FUNC_START(v4wb_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
-
+SYM_FUNC_END(v4wb_coherent_user_range)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4wb_dma_map_area)
+SYM_TYPED_FUNC_START(v4wb_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	v4wb_dma_clean_range
 	bcs	v4wb_dma_inv_range
 	b	v4wb_dma_flush_range
-ENDPROC(v4wb_dma_map_area)
+SYM_FUNC_END(v4wb_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4wb_dma_unmap_area)
+SYM_TYPED_FUNC_START(v4wb_dma_unmap_area)
 	ret	lr
-ENDPROC(v4wb_dma_unmap_area)
-
-	.globl	v4wb_flush_kern_cache_louis
-	.equ	v4wb_flush_kern_cache_louis, v4wb_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v4wb
+SYM_FUNC_END(v4wb_dma_unmap_area)

arch/arm/mm/cache-v4wt.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
 #include "proc-macros.S"
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(v4wt_flush_icache_all)
+SYM_TYPED_FUNC_START(v4wt_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(v4wt_flush_icache_all)
+SYM_FUNC_END(v4wt_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(v4wt_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(v4wt_flush_user_cache_all, v4wt_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(v4wt_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v4wt_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, ip, c7, c6, 0		@ invalidate D cache
 	ret	lr
+SYM_FUNC_END(v4wt_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive, page aligned)
  *	- flags	- vma_area_struct flags describing address space
  */
-ENTRY(v4wt_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v4wt_flush_user_cache_range)
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
 	bhs	__flush_whole_cache
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
+SYM_FUNC_END(v4wt_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4wt_coherent_kern_range)
-	/* FALLTRHOUGH */
+SYM_TYPED_FUNC_START(v4wt_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v4wt_coherent_user_range
+#endif
+SYM_FUNC_END(v4wt_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(v4wt_coherent_user_range)
+SYM_TYPED_FUNC_START(v4wt_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	blo	1b
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(v4wt_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v4wt_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(v4wt_flush_kern_dcache_area)
 	mov	r2, #0
 	mcr	p15, 0, r2, c7, c5, 0		@ invalidate I cache
 	add	r1, r0, r1
-	/* fallthrough */
+	b	v4wt_dma_inv_range
+SYM_FUNC_END(v4wt_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *
  *	- start  - virtual start address
  *	- end	 - virtual end address
- */
-	.globl	v4wt_dma_flush_range
-	.equ	v4wt_dma_flush_range, v4wt_dma_inv_range
+*/
+SYM_TYPED_FUNC_START(v4wt_dma_flush_range)
+	b	v4wt_dma_inv_range
+SYM_FUNC_END(v4wt_dma_flush_range)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4wt_dma_unmap_area)
+SYM_TYPED_FUNC_START(v4wt_dma_unmap_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_TO_DEVICE
 	bne	v4wt_dma_inv_range
-	/* FALLTHROUGH */
+	ret	lr
+SYM_FUNC_END(v4wt_dma_unmap_area)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v4wt_dma_map_area)
+SYM_TYPED_FUNC_START(v4wt_dma_map_area)
 	ret	lr
-ENDPROC(v4wt_dma_unmap_area)
-ENDPROC(v4wt_dma_map_area)
-
-	.globl	v4wt_flush_kern_cache_louis
-	.equ	v4wt_flush_kern_cache_louis, v4wt_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v4wt
+SYM_FUNC_END(v4wt_dma_map_area)

arch/arm/mm/cache-v6.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/errno.h>
 #include <asm/unwind.h>
···
  *	r0 - set to 0
  *	r1 - corrupted
  */
-ENTRY(v6_flush_icache_all)
+SYM_TYPED_FUNC_START(v6_flush_icache_all)
 	mov	r0, #0
 #ifdef CONFIG_ARM_ERRATA_411920
 	mrs	r1, cpsr
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I-cache
 #endif
 	ret	lr
-ENDPROC(v6_flush_icache_all)
+SYM_FUNC_END(v6_flush_icache_all)
 
 /*
  *	v6_flush_cache_all()
···
  *
  *	It is assumed that:
  */
-ENTRY(v6_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v6_flush_kern_cache_all)
 	mov	r0, #0
 #ifdef HARVARD_CACHE
 	mcr	p15, 0, r0, c7, c14, 0		@ D cache clean+invalidate
···
 	mcr	p15, 0, r0, c7, c15, 0		@ Cache clean+invalidate
 #endif
 	ret	lr
+SYM_FUNC_END(v6_flush_kern_cache_all)
 
 /*
  *	v6_flush_cache_all()
···
  *
  *	- mm    - mm_struct describing address space
  */
-ENTRY(v6_flush_user_cache_all)
-	/*FALLTHROUGH*/
+SYM_TYPED_FUNC_START(v6_flush_user_cache_all)
+	ret	lr
+SYM_FUNC_END(v6_flush_user_cache_all)
 
 /*
  *	v6_flush_cache_range(start, end, flags)
···
  *	It is assumed that:
  *	- we have a VIPT cache.
  */
-ENTRY(v6_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v6_flush_user_cache_range)
 	ret	lr
+SYM_FUNC_END(v6_flush_user_cache_range)
 
 /*
  *	v6_coherent_kern_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v6_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(v6_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v6_coherent_user_range
+#endif
+SYM_FUNC_END(v6_coherent_kern_range)
 
 /*
  *	v6_coherent_user_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v6_coherent_user_range)
+SYM_TYPED_FUNC_START(v6_coherent_user_range)
  UNWIND(.fnstart		)
 #ifdef HARVARD_CACHE
 	bic	r0, r0, #CACHE_LINE_SIZE - 1
···
 	mov	r0, #-EFAULT
 	ret	lr
  UNWIND(.fnend		)
-ENDPROC(v6_coherent_user_range)
-ENDPROC(v6_coherent_kern_range)
+SYM_FUNC_END(v6_coherent_user_range)
 
 /*
  *	v6_flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v6_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(v6_flush_kern_dcache_area)
 	add	r1, r0, r1
 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
···
 	mcr	p15, 0, r0, c7, c10, 4
 #endif
 	ret	lr
-
+SYM_FUNC_END(v6_flush_kern_dcache_area)
 
 /*
  *	v6_dma_inv_range(start,end)
···
  *	- start   - virtual start address of region
  *	- end     - virtual end address of region
  */
-ENTRY(v6_dma_flush_range)
+SYM_TYPED_FUNC_START(v6_dma_flush_range)
 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
 #ifdef HARVARD_CACHE
···
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(v6_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v6_dma_map_area)
+SYM_TYPED_FUNC_START(v6_dma_map_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_FROM_DEVICE
 	beq	v6_dma_inv_range
 	b	v6_dma_clean_range
-ENDPROC(v6_dma_map_area)
+SYM_FUNC_END(v6_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v6_dma_unmap_area)
+SYM_TYPED_FUNC_START(v6_dma_unmap_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_TO_DEVICE
 	bne	v6_dma_inv_range
 	ret	lr
-ENDPROC(v6_dma_unmap_area)
-
-	.globl	v6_flush_kern_cache_louis
-	.equ	v6_flush_kern_cache_louis, v6_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v6
+SYM_FUNC_END(v6_dma_unmap_area)

arch/arm/mm/cache-v7.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/errno.h>
 #include <asm/unwind.h>
···
  *	Registers:
  *	r0 - set to 0
  */
-ENTRY(v7_flush_icache_all)
+SYM_TYPED_FUNC_START(v7_flush_icache_all)
 	mov	r0, #0
 	ALT_SMP(mcr	p15, 0, r0, c7, c1, 0)		@ invalidate I-cache inner shareable
 	ALT_UP(mcr	p15, 0, r0, c7, c5, 0)		@ I+BTB cache invalidate
 	ret	lr
-ENDPROC(v7_flush_icache_all)
+SYM_FUNC_END(v7_flush_icache_all)
 
  /*
  *     v7_flush_dcache_louis()
···
  *  unification in a single instruction.
  *
  */
-ENTRY(v7_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v7_flush_kern_cache_all)
 	stmfd	sp!, {r4-r6, r9-r10, lr}
 	bl	v7_flush_dcache_all
 	mov	r0, #0
···
 	ALT_UP(mcr	p15, 0, r0, c7, c5, 0)	@ I+BTB cache invalidate
 	ldmfd	sp!, {r4-r6, r9-r10, lr}
 	ret	lr
-ENDPROC(v7_flush_kern_cache_all)
+SYM_FUNC_END(v7_flush_kern_cache_all)
 
  /*
  *     v7_flush_kern_cache_louis(void)
···
  *     Flush the data cache up to Level of Unification Inner Shareable.
  *     Invalidate the I-cache to the point of unification.
  */
-ENTRY(v7_flush_kern_cache_louis)
+SYM_TYPED_FUNC_START(v7_flush_kern_cache_louis)
 	stmfd	sp!, {r4-r6, r9-r10, lr}
 	bl	v7_flush_dcache_louis
 	mov	r0, #0
···
 	ALT_UP(mcr	p15, 0, r0, c7, c5, 0)	@ I+BTB cache invalidate
 	ldmfd	sp!, {r4-r6, r9-r10, lr}
 	ret	lr
-ENDPROC(v7_flush_kern_cache_louis)
+SYM_FUNC_END(v7_flush_kern_cache_louis)
 
 /*
  *	v7_flush_cache_all()
···
  *
  *	- mm    - mm_struct describing address space
  */
-ENTRY(v7_flush_user_cache_all)
-	/*FALLTHROUGH*/
+SYM_TYPED_FUNC_START(v7_flush_user_cache_all)
+	ret	lr
+SYM_FUNC_END(v7_flush_user_cache_all)
 
 /*
  *	v7_flush_cache_range(start, end, flags)
···
  *	It is assumed that:
  *	- we have a VIPT cache.
  */
-ENTRY(v7_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v7_flush_user_cache_range)
 	ret	lr
-ENDPROC(v7_flush_user_cache_all)
-ENDPROC(v7_flush_user_cache_range)
+SYM_FUNC_END(v7_flush_user_cache_range)
 
 /*
  *	v7_coherent_kern_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v7_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(v7_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v7_coherent_user_range
+#endif
+SYM_FUNC_END(v7_coherent_kern_range)
 
 /*
  *	v7_coherent_user_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v7_coherent_user_range)
+SYM_TYPED_FUNC_START(v7_coherent_user_range)
  UNWIND(.fnstart		)
 	dcache_line_size r2, r3
 	sub	r3, r2, #1
···
 	mov	r0, #-EFAULT
 	ret	lr
  UNWIND(.fnend		)
-ENDPROC(v7_coherent_kern_range)
-ENDPROC(v7_coherent_user_range)
+SYM_FUNC_END(v7_coherent_user_range)
 
 /*
  *	v7_flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v7_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(v7_flush_kern_dcache_area)
 	dcache_line_size r2, r3
 	add	r1, r0, r1
 	sub	r3, r2, #1
···
 	blo	1b
 	dsb	st
 	ret	lr
-ENDPROC(v7_flush_kern_dcache_area)
+SYM_FUNC_END(v7_flush_kern_dcache_area)
 
 /*
  *	v7_dma_inv_range(start,end)
···
  *	- start   - virtual start address of region
  *	- end     - virtual end address of region
  */
-ENTRY(v7_dma_flush_range)
+SYM_TYPED_FUNC_START(v7_dma_flush_range)
 	dcache_line_size r2, r3
 	sub	r3, r2, #1
 	bic	r0, r0, r3
···
 	blo	1b
 	dsb	st
 	ret	lr
-ENDPROC(v7_dma_flush_range)
+SYM_FUNC_END(v7_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v7_dma_map_area)
+SYM_TYPED_FUNC_START(v7_dma_map_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_FROM_DEVICE
 	beq	v7_dma_inv_range
 	b	v7_dma_clean_range
-ENDPROC(v7_dma_map_area)
+SYM_FUNC_END(v7_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v7_dma_unmap_area)
+SYM_TYPED_FUNC_START(v7_dma_unmap_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_TO_DEVICE
 	bne	v7_dma_inv_range
 	ret	lr
-ENDPROC(v7_dma_unmap_area)
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v7
-
-	/* The Broadcom Brahma-B15 read-ahead cache requires some modifications
-	 * to the v7_cache_fns, we only override the ones we need
-	 */
-#ifndef CONFIG_CACHE_B15_RAC
-	globl_equ	b15_flush_kern_cache_all,	v7_flush_kern_cache_all
-#endif
-	globl_equ	b15_flush_icache_all,		v7_flush_icache_all
-	globl_equ	b15_flush_kern_cache_louis,	v7_flush_kern_cache_louis
-	globl_equ	b15_flush_user_cache_all,	v7_flush_user_cache_all
-	globl_equ	b15_flush_user_cache_range,	v7_flush_user_cache_range
-	globl_equ	b15_coherent_kern_range,	v7_coherent_kern_range
-	globl_equ	b15_coherent_user_range,	v7_coherent_user_range
-	globl_equ	b15_flush_kern_dcache_area,	v7_flush_kern_dcache_area
-
-	globl_equ	b15_dma_map_area,		v7_dma_map_area
-	globl_equ	b15_dma_unmap_area,		v7_dma_unmap_area
-	globl_equ	b15_dma_flush_range,		v7_dma_flush_range
-
-	define_cache_functions b15
+SYM_FUNC_END(v7_dma_unmap_area)

arch/arm/mm/cache-v7m.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/errno.h>
 #include <asm/unwind.h>
···
  *	Registers:
  *	r0 - set to 0
  */
-ENTRY(v7m_flush_icache_all)
+SYM_TYPED_FUNC_START(v7m_flush_icache_all)
 	invalidate_icache r0
 	ret	lr
-ENDPROC(v7m_flush_icache_all)
+SYM_FUNC_END(v7m_flush_icache_all)
 
 /*
  *	v7m_flush_dcache_all()
···
  *  unification in a single instruction.
  *
  */
-ENTRY(v7m_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(v7m_flush_kern_cache_all)
 	stmfd	sp!, {r4-r7, r9-r11, lr}
 	bl	v7m_flush_dcache_all
 	invalidate_icache r0
 	ldmfd	sp!, {r4-r7, r9-r11, lr}
 	ret	lr
-ENDPROC(v7m_flush_kern_cache_all)
+SYM_FUNC_END(v7m_flush_kern_cache_all)
 
 /*
  *	v7m_flush_cache_all()
···
  *
  *	- mm    - mm_struct describing address space
  */
-ENTRY(v7m_flush_user_cache_all)
-	/*FALLTHROUGH*/
+SYM_TYPED_FUNC_START(v7m_flush_user_cache_all)
+	ret	lr
+SYM_FUNC_END(v7m_flush_user_cache_all)
 
 /*
  *	v7m_flush_cache_range(start, end, flags)
···
  *	It is assumed that:
  *	- we have a VIPT cache.
  */
-ENTRY(v7m_flush_user_cache_range)
+SYM_TYPED_FUNC_START(v7m_flush_user_cache_range)
 	ret	lr
-ENDPROC(v7m_flush_user_cache_all)
-ENDPROC(v7m_flush_user_cache_range)
+SYM_FUNC_END(v7m_flush_user_cache_range)
 
 /*
  *	v7m_coherent_kern_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v7m_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(v7m_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	v7m_coherent_user_range
+#endif
+SYM_FUNC_END(v7m_coherent_kern_range)
 
 /*
  *	v7m_coherent_user_range(start,end)
···
  *	It is assumed that:
  *	- the Icache does not read data from the write buffer
  */
-ENTRY(v7m_coherent_user_range)
+SYM_TYPED_FUNC_START(v7m_coherent_user_range)
  UNWIND(.fnstart		)
 	dcache_line_size r2, r3
 	sub	r3, r2, #1
···
 	isb
 	ret	lr
  UNWIND(.fnend		)
-ENDPROC(v7m_coherent_kern_range)
-ENDPROC(v7m_coherent_user_range)
+SYM_FUNC_END(v7m_coherent_user_range)
 
 /*
  *	v7m_flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(v7m_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(v7m_flush_kern_dcache_area)
 	dcache_line_size r2, r3
 	add	r1, r0, r1
 	sub	r3, r2, #1
···
 	blo	1b
 	dsb	st
 	ret	lr
-ENDPROC(v7m_flush_kern_dcache_area)
+SYM_FUNC_END(v7m_flush_kern_dcache_area)
 
 /*
  *	v7m_dma_inv_range(start,end)
···
  *	- start   - virtual start address of region
  *	- end     - virtual end address of region
  */
-ENTRY(v7m_dma_flush_range)
+SYM_TYPED_FUNC_START(v7m_dma_flush_range)
 	dcache_line_size r2, r3
 	sub	r3, r2, #1
 	bic	r0, r0, r3
···
 	blo	1b
 	dsb	st
 	ret	lr
-ENDPROC(v7m_dma_flush_range)
+SYM_FUNC_END(v7m_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v7m_dma_map_area)
+SYM_TYPED_FUNC_START(v7m_dma_map_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_FROM_DEVICE
 	beq	v7m_dma_inv_range
 	b	v7m_dma_clean_range
-ENDPROC(v7m_dma_map_area)
+SYM_FUNC_END(v7m_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(v7m_dma_unmap_area)
+SYM_TYPED_FUNC_START(v7m_dma_unmap_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_TO_DEVICE
 	bne	v7m_dma_inv_range
 	ret	lr
-ENDPROC(v7m_dma_unmap_area)
-
-	.globl	v7m_flush_kern_cache_louis
-	.equ	v7m_flush_kern_cache_louis, v7m_flush_kern_cache_all
-
-	__INITDATA
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions v7m
+SYM_FUNC_END(v7m_dma_unmap_area)

arch/arm/mm/cache.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This file defines C prototypes for the low-level cache assembly functions
+ * and populates a vtable for each selected ARM CPU cache type.
+ */
+
+#include <linux/types.h>
+#include <asm/cacheflush.h>
+
+#ifdef CONFIG_CPU_CACHE_V4
+void v4_flush_icache_all(void);
+void v4_flush_kern_cache_all(void);
+void v4_flush_user_cache_all(void);
+void v4_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v4_coherent_kern_range(unsigned long, unsigned long);
+int v4_coherent_user_range(unsigned long, unsigned long);
+void v4_flush_kern_dcache_area(void *, size_t);
+void v4_dma_map_area(const void *, size_t, int);
+void v4_dma_unmap_area(const void *, size_t, int);
+void v4_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v4_cache_fns __initconst = {
+	.flush_icache_all = v4_flush_icache_all,
+	.flush_kern_all = v4_flush_kern_cache_all,
+	.flush_kern_louis = v4_flush_kern_cache_all,
+	.flush_user_all = v4_flush_user_cache_all,
+	.flush_user_range = v4_flush_user_cache_range,
+	.coherent_kern_range = v4_coherent_kern_range,
+	.coherent_user_range = v4_coherent_user_range,
+	.flush_kern_dcache_area = v4_flush_kern_dcache_area,
+	.dma_map_area = v4_dma_map_area,
+	.dma_unmap_area = v4_dma_unmap_area,
+	.dma_flush_range = v4_dma_flush_range,
+};
+#endif
+
+/* V4 write-back cache "V4WB" */
+#ifdef CONFIG_CPU_CACHE_V4WB
+void v4wb_flush_icache_all(void);
+void v4wb_flush_kern_cache_all(void);
+void v4wb_flush_user_cache_all(void);
+void v4wb_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v4wb_coherent_kern_range(unsigned long, unsigned long);
+int v4wb_coherent_user_range(unsigned long, unsigned long);
+void v4wb_flush_kern_dcache_area(void *, size_t);
+void v4wb_dma_map_area(const void *, size_t, int);
+void v4wb_dma_unmap_area(const void *, size_t, int);
+void v4wb_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v4wb_cache_fns __initconst = {
+	.flush_icache_all = v4wb_flush_icache_all,
+	.flush_kern_all = v4wb_flush_kern_cache_all,
+	.flush_kern_louis = v4wb_flush_kern_cache_all,
+	.flush_user_all = v4wb_flush_user_cache_all,
+	.flush_user_range = v4wb_flush_user_cache_range,
+	.coherent_kern_range = v4wb_coherent_kern_range,
+	.coherent_user_range = v4wb_coherent_user_range,
+	.flush_kern_dcache_area = v4wb_flush_kern_dcache_area,
+	.dma_map_area = v4wb_dma_map_area,
+	.dma_unmap_area = v4wb_dma_unmap_area,
+	.dma_flush_range = v4wb_dma_flush_range,
+};
+#endif
+
+/* V4 write-through cache "V4WT" */
+#ifdef CONFIG_CPU_CACHE_V4WT
+void v4wt_flush_icache_all(void);
+void v4wt_flush_kern_cache_all(void);
+void v4wt_flush_user_cache_all(void);
+void v4wt_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v4wt_coherent_kern_range(unsigned long, unsigned long);
+int v4wt_coherent_user_range(unsigned long, unsigned long);
+void v4wt_flush_kern_dcache_area(void *, size_t);
+void v4wt_dma_map_area(const void *, size_t, int);
+void v4wt_dma_unmap_area(const void *, size_t, int);
+void v4wt_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v4wt_cache_fns __initconst = {
+	.flush_icache_all = v4wt_flush_icache_all,
+	.flush_kern_all = v4wt_flush_kern_cache_all,
+	.flush_kern_louis = v4wt_flush_kern_cache_all,
+	.flush_user_all = v4wt_flush_user_cache_all,
+	.flush_user_range = v4wt_flush_user_cache_range,
+	.coherent_kern_range = v4wt_coherent_kern_range,
+	.coherent_user_range = v4wt_coherent_user_range,
+	.flush_kern_dcache_area = v4wt_flush_kern_dcache_area,
+	.dma_map_area = v4wt_dma_map_area,
+	.dma_unmap_area = v4wt_dma_unmap_area,
+	.dma_flush_range = v4wt_dma_flush_range,
+};
+#endif
+
+/* Faraday FA526 cache */
+#ifdef CONFIG_CPU_CACHE_FA
+void fa_flush_icache_all(void);
+void fa_flush_kern_cache_all(void);
+void fa_flush_user_cache_all(void);
+void fa_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void fa_coherent_kern_range(unsigned long, unsigned long);
+int fa_coherent_user_range(unsigned long, unsigned long);
+void fa_flush_kern_dcache_area(void *, size_t);
+void fa_dma_map_area(const void *, size_t, int);
+void fa_dma_unmap_area(const void *, size_t, int);
+void fa_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns fa_cache_fns __initconst = {
+	.flush_icache_all = fa_flush_icache_all,
+	.flush_kern_all = fa_flush_kern_cache_all,
+	.flush_kern_louis = fa_flush_kern_cache_all,
+	.flush_user_all = fa_flush_user_cache_all,
+	.flush_user_range = fa_flush_user_cache_range,
+	.coherent_kern_range = fa_coherent_kern_range,
+	.coherent_user_range = fa_coherent_user_range,
+	.flush_kern_dcache_area = fa_flush_kern_dcache_area,
+	.dma_map_area = fa_dma_map_area,
+	.dma_unmap_area = fa_dma_unmap_area,
+	.dma_flush_range = fa_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_CACHE_V6
+void v6_flush_icache_all(void);
+void v6_flush_kern_cache_all(void);
+void v6_flush_user_cache_all(void);
+void v6_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v6_coherent_kern_range(unsigned long, unsigned long);
+int v6_coherent_user_range(unsigned long, unsigned long);
+void v6_flush_kern_dcache_area(void *, size_t);
+void v6_dma_map_area(const void *, size_t, int);
+void v6_dma_unmap_area(const void *, size_t, int);
+void v6_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v6_cache_fns __initconst = {
+	.flush_icache_all = v6_flush_icache_all,
+	.flush_kern_all = v6_flush_kern_cache_all,
+	.flush_kern_louis = v6_flush_kern_cache_all,
+	.flush_user_all = v6_flush_user_cache_all,
+	.flush_user_range = v6_flush_user_cache_range,
+	.coherent_kern_range = v6_coherent_kern_range,
+	.coherent_user_range = v6_coherent_user_range,
+	.flush_kern_dcache_area = v6_flush_kern_dcache_area,
+	.dma_map_area = v6_dma_map_area,
+	.dma_unmap_area = v6_dma_unmap_area,
+	.dma_flush_range = v6_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_CACHE_V7
+void v7_flush_icache_all(void);
+void v7_flush_kern_cache_all(void);
+void v7_flush_kern_cache_louis(void);
+void v7_flush_user_cache_all(void);
+void v7_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v7_coherent_kern_range(unsigned long, unsigned long);
+int v7_coherent_user_range(unsigned long, unsigned long);
+void v7_flush_kern_dcache_area(void *, size_t);
+void v7_dma_map_area(const void *, size_t, int);
+void v7_dma_unmap_area(const void *, size_t, int);
+void v7_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v7_cache_fns __initconst = {
+	.flush_icache_all = v7_flush_icache_all,
+	.flush_kern_all = v7_flush_kern_cache_all,
+	.flush_kern_louis = v7_flush_kern_cache_louis,
+	.flush_user_all = v7_flush_user_cache_all,
+	.flush_user_range = v7_flush_user_cache_range,
+	.coherent_kern_range = v7_coherent_kern_range,
+	.coherent_user_range = v7_coherent_user_range,
+	.flush_kern_dcache_area = v7_flush_kern_dcache_area,
+	.dma_map_area = v7_dma_map_area,
+	.dma_unmap_area = v7_dma_unmap_area,
+	.dma_flush_range = v7_dma_flush_range,
+};
+
+/* Special quirky cache flush function for Broadcom B15 v7 caches */
+void b15_flush_kern_cache_all(void);
+
+struct cpu_cache_fns b15_cache_fns __initconst = {
+	.flush_icache_all = v7_flush_icache_all,
+#ifdef CONFIG_CACHE_B15_RAC
+	.flush_kern_all = b15_flush_kern_cache_all,
+#else
+	.flush_kern_all = v7_flush_kern_cache_all,
+#endif
+	.flush_kern_louis = v7_flush_kern_cache_louis,
+	.flush_user_all = v7_flush_user_cache_all,
+	.flush_user_range = v7_flush_user_cache_range,
+	.coherent_kern_range = v7_coherent_kern_range,
+	.coherent_user_range = v7_coherent_user_range,
+	.flush_kern_dcache_area = v7_flush_kern_dcache_area,
+	.dma_map_area = v7_dma_map_area,
+	.dma_unmap_area = v7_dma_unmap_area,
+	.dma_flush_range = v7_dma_flush_range,
+};
+#endif
+
+/* The NOP cache is just a set of dummy stubs that by definition does nothing */
+#ifdef CONFIG_CPU_CACHE_NOP
+void nop_flush_icache_all(void);
+void nop_flush_kern_cache_all(void);
+void nop_flush_user_cache_all(void);
+void nop_flush_user_cache_range(unsigned long start, unsigned long end, unsigned int flags);
+void nop_coherent_kern_range(unsigned long start, unsigned long end);
+int nop_coherent_user_range(unsigned long, unsigned long);
+void nop_flush_kern_dcache_area(void *kaddr, size_t size);
+void nop_dma_map_area(const void *start, size_t size, int flags);
+void nop_dma_unmap_area(const void *start, size_t size, int flags);
+void nop_dma_flush_range(const void *start, const void *end);
+
+struct cpu_cache_fns nop_cache_fns __initconst = {
+	.flush_icache_all = nop_flush_icache_all,
+	.flush_kern_all = nop_flush_kern_cache_all,
+	.flush_kern_louis = nop_flush_kern_cache_all,
+	.flush_user_all = nop_flush_user_cache_all,
+	.flush_user_range = nop_flush_user_cache_range,
+	.coherent_kern_range = nop_coherent_kern_range,
+	.coherent_user_range = nop_coherent_user_range,
+	.flush_kern_dcache_area = nop_flush_kern_dcache_area,
+	.dma_map_area = nop_dma_map_area,
+	.dma_unmap_area = nop_dma_unmap_area,
+	.dma_flush_range = nop_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_CACHE_V7M
+void v7m_flush_icache_all(void);
+void v7m_flush_kern_cache_all(void);
+void v7m_flush_user_cache_all(void);
+void v7m_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void v7m_coherent_kern_range(unsigned long, unsigned long);
+int v7m_coherent_user_range(unsigned long, unsigned long);
+void v7m_flush_kern_dcache_area(void *, size_t);
+void v7m_dma_map_area(const void *, size_t, int);
+void v7m_dma_unmap_area(const void *, size_t, int);
+void v7m_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns v7m_cache_fns __initconst = {
+	.flush_icache_all = v7m_flush_icache_all,
+	.flush_kern_all = v7m_flush_kern_cache_all,
+	.flush_kern_louis = v7m_flush_kern_cache_all,
+	.flush_user_all = v7m_flush_user_cache_all,
+	.flush_user_range = v7m_flush_user_cache_range,
+	.coherent_kern_range = v7m_coherent_kern_range,
+	.coherent_user_range = v7m_coherent_user_range,
+	.flush_kern_dcache_area = v7m_flush_kern_dcache_area,
+	.dma_map_area = v7m_dma_map_area,
+	.dma_unmap_area = v7m_dma_unmap_area,
+	.dma_flush_range = v7m_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM1020
+void arm1020_flush_icache_all(void);
+void arm1020_flush_kern_cache_all(void);
+void arm1020_flush_user_cache_all(void);
+void arm1020_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm1020_coherent_kern_range(unsigned long, unsigned long);
+int arm1020_coherent_user_range(unsigned long, unsigned long);
+void arm1020_flush_kern_dcache_area(void *, size_t);
+void arm1020_dma_map_area(const void *, size_t, int);
+void arm1020_dma_unmap_area(const void *, size_t, int);
+void arm1020_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm1020_cache_fns __initconst = {
+	.flush_icache_all = arm1020_flush_icache_all,
+	.flush_kern_all = arm1020_flush_kern_cache_all,
+	.flush_kern_louis = arm1020_flush_kern_cache_all,
+	.flush_user_all = arm1020_flush_user_cache_all,
+	.flush_user_range = arm1020_flush_user_cache_range,
+	.coherent_kern_range = arm1020_coherent_kern_range,
+	.coherent_user_range = arm1020_coherent_user_range,
+	.flush_kern_dcache_area = arm1020_flush_kern_dcache_area,
+	.dma_map_area = arm1020_dma_map_area,
+	.dma_unmap_area = arm1020_dma_unmap_area,
+	.dma_flush_range = arm1020_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM1020E
+void arm1020e_flush_icache_all(void);
+void arm1020e_flush_kern_cache_all(void);
+void arm1020e_flush_user_cache_all(void);
+void arm1020e_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm1020e_coherent_kern_range(unsigned long, unsigned long);
+int arm1020e_coherent_user_range(unsigned long, unsigned long);
+void arm1020e_flush_kern_dcache_area(void *, size_t);
+void arm1020e_dma_map_area(const void *, size_t, int);
+void arm1020e_dma_unmap_area(const void *, size_t, int);
+void arm1020e_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm1020e_cache_fns __initconst = {
+	.flush_icache_all = arm1020e_flush_icache_all,
+	.flush_kern_all = arm1020e_flush_kern_cache_all,
+	.flush_kern_louis = arm1020e_flush_kern_cache_all,
+	.flush_user_all = arm1020e_flush_user_cache_all,
+	.flush_user_range = arm1020e_flush_user_cache_range,
+	.coherent_kern_range = arm1020e_coherent_kern_range,
+	.coherent_user_range = arm1020e_coherent_user_range,
+	.flush_kern_dcache_area = arm1020e_flush_kern_dcache_area,
+	.dma_map_area = arm1020e_dma_map_area,
+	.dma_unmap_area = arm1020e_dma_unmap_area,
+	.dma_flush_range = arm1020e_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM1022
+void arm1022_flush_icache_all(void);
+void arm1022_flush_kern_cache_all(void);
+void arm1022_flush_user_cache_all(void);
+void arm1022_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm1022_coherent_kern_range(unsigned long, unsigned long);
+int arm1022_coherent_user_range(unsigned long, unsigned long);
+void arm1022_flush_kern_dcache_area(void *, size_t);
+void arm1022_dma_map_area(const void *, size_t, int);
+void arm1022_dma_unmap_area(const void *, size_t, int);
+void arm1022_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm1022_cache_fns __initconst = {
+	.flush_icache_all = arm1022_flush_icache_all,
+	.flush_kern_all = arm1022_flush_kern_cache_all,
+	.flush_kern_louis = arm1022_flush_kern_cache_all,
+	.flush_user_all = arm1022_flush_user_cache_all,
+	.flush_user_range = arm1022_flush_user_cache_range,
+	.coherent_kern_range = arm1022_coherent_kern_range,
+	.coherent_user_range = arm1022_coherent_user_range,
+	.flush_kern_dcache_area = arm1022_flush_kern_dcache_area,
+	.dma_map_area = arm1022_dma_map_area,
+	.dma_unmap_area = arm1022_dma_unmap_area,
+	.dma_flush_range = arm1022_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM1026
+void arm1026_flush_icache_all(void);
+void arm1026_flush_kern_cache_all(void);
+void arm1026_flush_user_cache_all(void);
+void arm1026_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm1026_coherent_kern_range(unsigned long, unsigned long);
+int arm1026_coherent_user_range(unsigned long, unsigned long);
+void arm1026_flush_kern_dcache_area(void *, size_t);
+void arm1026_dma_map_area(const void *, size_t, int);
+void arm1026_dma_unmap_area(const void *, size_t, int);
+void arm1026_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm1026_cache_fns __initconst = {
+	.flush_icache_all = arm1026_flush_icache_all,
+	.flush_kern_all = arm1026_flush_kern_cache_all,
+	.flush_kern_louis = arm1026_flush_kern_cache_all,
+	.flush_user_all = arm1026_flush_user_cache_all,
+	.flush_user_range = arm1026_flush_user_cache_range,
+	.coherent_kern_range = arm1026_coherent_kern_range,
+	.coherent_user_range = arm1026_coherent_user_range,
+	.flush_kern_dcache_area = arm1026_flush_kern_dcache_area,
+	.dma_map_area = arm1026_dma_map_area,
+	.dma_unmap_area = arm1026_dma_unmap_area,
+	.dma_flush_range = arm1026_dma_flush_range,
+};
+#endif
+
+#if defined(CONFIG_CPU_ARM920T) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH)
+void arm920_flush_icache_all(void);
+void arm920_flush_kern_cache_all(void);
+void arm920_flush_user_cache_all(void);
+void arm920_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm920_coherent_kern_range(unsigned long, unsigned long);
+int arm920_coherent_user_range(unsigned long, unsigned long);
+void arm920_flush_kern_dcache_area(void *, size_t);
+void arm920_dma_map_area(const void *, size_t, int);
+void arm920_dma_unmap_area(const void *, size_t, int);
+void arm920_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm920_cache_fns __initconst = {
+	.flush_icache_all = arm920_flush_icache_all,
+	.flush_kern_all = arm920_flush_kern_cache_all,
+	.flush_kern_louis = arm920_flush_kern_cache_all,
+	.flush_user_all = arm920_flush_user_cache_all,
+	.flush_user_range = arm920_flush_user_cache_range,
+	.coherent_kern_range = arm920_coherent_kern_range,
+	.coherent_user_range = arm920_coherent_user_range,
+	.flush_kern_dcache_area = arm920_flush_kern_dcache_area,
+	.dma_map_area = arm920_dma_map_area,
+	.dma_unmap_area = arm920_dma_unmap_area,
+	.dma_flush_range = arm920_dma_flush_range,
+};
+#endif
+
+#if defined(CONFIG_CPU_ARM922T) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH)
+void arm922_flush_icache_all(void);
+void arm922_flush_kern_cache_all(void);
+void arm922_flush_user_cache_all(void);
+void arm922_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm922_coherent_kern_range(unsigned long, unsigned long);
+int arm922_coherent_user_range(unsigned long, unsigned long);
+void arm922_flush_kern_dcache_area(void *, size_t);
+void arm922_dma_map_area(const void *, size_t, int);
+void arm922_dma_unmap_area(const void *, size_t, int);
+void arm922_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm922_cache_fns __initconst = {
+	.flush_icache_all = arm922_flush_icache_all,
+	.flush_kern_all = arm922_flush_kern_cache_all,
+	.flush_kern_louis = arm922_flush_kern_cache_all,
+	.flush_user_all = arm922_flush_user_cache_all,
+	.flush_user_range = arm922_flush_user_cache_range,
+	.coherent_kern_range = arm922_coherent_kern_range,
+	.coherent_user_range = arm922_coherent_user_range,
+	.flush_kern_dcache_area = arm922_flush_kern_dcache_area,
+	.dma_map_area = arm922_dma_map_area,
+	.dma_unmap_area = arm922_dma_unmap_area,
+	.dma_flush_range = arm922_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM925T
+void arm925_flush_icache_all(void);
+void arm925_flush_kern_cache_all(void);
+void arm925_flush_user_cache_all(void);
+void arm925_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm925_coherent_kern_range(unsigned long, unsigned long);
+int arm925_coherent_user_range(unsigned long, unsigned long);
+void arm925_flush_kern_dcache_area(void *, size_t);
+void arm925_dma_map_area(const void *, size_t, int);
+void arm925_dma_unmap_area(const void *, size_t, int);
+void arm925_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm925_cache_fns __initconst = {
+	.flush_icache_all = arm925_flush_icache_all,
+	.flush_kern_all = arm925_flush_kern_cache_all,
+	.flush_kern_louis = arm925_flush_kern_cache_all,
+	.flush_user_all = arm925_flush_user_cache_all,
+	.flush_user_range = arm925_flush_user_cache_range,
+	.coherent_kern_range = arm925_coherent_kern_range,
+	.coherent_user_range = arm925_coherent_user_range,
+	.flush_kern_dcache_area = arm925_flush_kern_dcache_area,
+	.dma_map_area = arm925_dma_map_area,
+	.dma_unmap_area = arm925_dma_unmap_area,
+	.dma_flush_range = arm925_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM926T
+void arm926_flush_icache_all(void);
+void arm926_flush_kern_cache_all(void);
+void arm926_flush_user_cache_all(void);
+void arm926_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm926_coherent_kern_range(unsigned long, unsigned long);
+int arm926_coherent_user_range(unsigned long, unsigned long);
+void arm926_flush_kern_dcache_area(void *, size_t);
+void arm926_dma_map_area(const void *, size_t, int);
+void arm926_dma_unmap_area(const void *, size_t, int);
+void arm926_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm926_cache_fns __initconst = {
+	.flush_icache_all = arm926_flush_icache_all,
+	.flush_kern_all = arm926_flush_kern_cache_all,
+	.flush_kern_louis = arm926_flush_kern_cache_all,
+	.flush_user_all = arm926_flush_user_cache_all,
+	.flush_user_range = arm926_flush_user_cache_range,
+	.coherent_kern_range = arm926_coherent_kern_range,
+	.coherent_user_range = arm926_coherent_user_range,
+	.flush_kern_dcache_area = arm926_flush_kern_dcache_area,
+	.dma_map_area = arm926_dma_map_area,
+	.dma_unmap_area = arm926_dma_unmap_area,
+	.dma_flush_range = arm926_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM940T
+void arm940_flush_icache_all(void);
+void arm940_flush_kern_cache_all(void);
+void arm940_flush_user_cache_all(void);
+void arm940_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm940_coherent_kern_range(unsigned long, unsigned long);
+int arm940_coherent_user_range(unsigned long, unsigned long);
+void arm940_flush_kern_dcache_area(void *, size_t);
+void arm940_dma_map_area(const void *, size_t, int);
+void arm940_dma_unmap_area(const void *, size_t, int);
+void arm940_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm940_cache_fns __initconst = {
+	.flush_icache_all = arm940_flush_icache_all,
+	.flush_kern_all = arm940_flush_kern_cache_all,
+	.flush_kern_louis = arm940_flush_kern_cache_all,
+	.flush_user_all = arm940_flush_user_cache_all,
+	.flush_user_range = arm940_flush_user_cache_range,
+	.coherent_kern_range = arm940_coherent_kern_range,
+	.coherent_user_range = arm940_coherent_user_range,
+	.flush_kern_dcache_area = arm940_flush_kern_dcache_area,
+	.dma_map_area = arm940_dma_map_area,
+	.dma_unmap_area = arm940_dma_unmap_area,
+	.dma_flush_range = arm940_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_ARM946E
+void arm946_flush_icache_all(void);
+void arm946_flush_kern_cache_all(void);
+void arm946_flush_user_cache_all(void);
+void arm946_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void arm946_coherent_kern_range(unsigned long, unsigned long);
+int arm946_coherent_user_range(unsigned long, unsigned long);
+void arm946_flush_kern_dcache_area(void *, size_t);
+void arm946_dma_map_area(const void *, size_t, int);
+void arm946_dma_unmap_area(const void *, size_t, int);
+void arm946_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns arm946_cache_fns __initconst = {
+	.flush_icache_all = arm946_flush_icache_all,
+	.flush_kern_all = arm946_flush_kern_cache_all,
+	.flush_kern_louis = arm946_flush_kern_cache_all,
+	.flush_user_all = arm946_flush_user_cache_all,
+	.flush_user_range = arm946_flush_user_cache_range,
+	.coherent_kern_range = arm946_coherent_kern_range,
+	.coherent_user_range = arm946_coherent_user_range,
+	.flush_kern_dcache_area = arm946_flush_kern_dcache_area,
+	.dma_map_area = arm946_dma_map_area,
+	.dma_unmap_area = arm946_dma_unmap_area,
+	.dma_flush_range = arm946_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_XSCALE
+void xscale_flush_icache_all(void);
+void xscale_flush_kern_cache_all(void);
+void xscale_flush_user_cache_all(void);
+void xscale_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void xscale_coherent_kern_range(unsigned long, unsigned long);
+int xscale_coherent_user_range(unsigned long, unsigned long);
+void xscale_flush_kern_dcache_area(void *, size_t);
+void xscale_dma_map_area(const void *, size_t, int);
+void xscale_dma_unmap_area(const void *, size_t, int);
+void xscale_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns xscale_cache_fns __initconst = {
+	.flush_icache_all = xscale_flush_icache_all,
+	.flush_kern_all = xscale_flush_kern_cache_all,
+	.flush_kern_louis = xscale_flush_kern_cache_all,
+	.flush_user_all = xscale_flush_user_cache_all,
+	.flush_user_range = xscale_flush_user_cache_range,
+	.coherent_kern_range = xscale_coherent_kern_range,
+	.coherent_user_range = xscale_coherent_user_range,
+	.flush_kern_dcache_area = xscale_flush_kern_dcache_area,
+	.dma_map_area = xscale_dma_map_area,
+	.dma_unmap_area = xscale_dma_unmap_area,
+	.dma_flush_range = xscale_dma_flush_range,
+};
+
+/* The 80200 A0 and A1 need a special quirk for dma_map_area() */
+void xscale_80200_A0_A1_dma_map_area(const void *, size_t, int);
+
+struct cpu_cache_fns xscale_80200_A0_A1_cache_fns __initconst = {
+	.flush_icache_all = xscale_flush_icache_all,
+	.flush_kern_all = xscale_flush_kern_cache_all,
+	.flush_kern_louis = xscale_flush_kern_cache_all,
+	.flush_user_all = xscale_flush_user_cache_all,
+	.flush_user_range = xscale_flush_user_cache_range,
+	.coherent_kern_range = xscale_coherent_kern_range,
+	.coherent_user_range = xscale_coherent_user_range,
+	.flush_kern_dcache_area = xscale_flush_kern_dcache_area,
+	.dma_map_area = xscale_80200_A0_A1_dma_map_area,
+	.dma_unmap_area = xscale_dma_unmap_area,
+	.dma_flush_range = xscale_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_XSC3
+void xsc3_flush_icache_all(void);
+void xsc3_flush_kern_cache_all(void);
+void xsc3_flush_user_cache_all(void);
+void xsc3_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void xsc3_coherent_kern_range(unsigned long, unsigned long);
+int xsc3_coherent_user_range(unsigned long, unsigned long);
+void xsc3_flush_kern_dcache_area(void *, size_t);
+void xsc3_dma_map_area(const void *, size_t, int);
+void xsc3_dma_unmap_area(const void *, size_t, int);
+void xsc3_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns xsc3_cache_fns __initconst = {
+	.flush_icache_all = xsc3_flush_icache_all,
+	.flush_kern_all = xsc3_flush_kern_cache_all,
+	.flush_kern_louis = xsc3_flush_kern_cache_all,
+	.flush_user_all = xsc3_flush_user_cache_all,
+	.flush_user_range = xsc3_flush_user_cache_range,
+	.coherent_kern_range = xsc3_coherent_kern_range,
+	.coherent_user_range = xsc3_coherent_user_range,
+	.flush_kern_dcache_area = xsc3_flush_kern_dcache_area,
+	.dma_map_area = xsc3_dma_map_area,
+	.dma_unmap_area = xsc3_dma_unmap_area,
+	.dma_flush_range = xsc3_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_MOHAWK
+void mohawk_flush_icache_all(void);
+void mohawk_flush_kern_cache_all(void);
+void mohawk_flush_user_cache_all(void);
+void mohawk_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void mohawk_coherent_kern_range(unsigned long, unsigned long);
+int mohawk_coherent_user_range(unsigned long, unsigned long);
+void mohawk_flush_kern_dcache_area(void *, size_t);
+void mohawk_dma_map_area(const void *, size_t, int);
+void mohawk_dma_unmap_area(const void *, size_t, int);
+void mohawk_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns mohawk_cache_fns __initconst = {
+	.flush_icache_all = mohawk_flush_icache_all,
+	.flush_kern_all = mohawk_flush_kern_cache_all,
+	.flush_kern_louis = mohawk_flush_kern_cache_all,
+	.flush_user_all = mohawk_flush_user_cache_all,
+	.flush_user_range = mohawk_flush_user_cache_range,
+	.coherent_kern_range = mohawk_coherent_kern_range,
+	.coherent_user_range = mohawk_coherent_user_range,
+	.flush_kern_dcache_area = mohawk_flush_kern_dcache_area,
+	.dma_map_area = mohawk_dma_map_area,
+	.dma_unmap_area = mohawk_dma_unmap_area,
+	.dma_flush_range = mohawk_dma_flush_range,
+};
+#endif
+
+#ifdef CONFIG_CPU_FEROCEON
+void feroceon_flush_icache_all(void);
+void feroceon_flush_kern_cache_all(void);
+void feroceon_flush_user_cache_all(void);
+void feroceon_flush_user_cache_range(unsigned long, unsigned long, unsigned int);
+void feroceon_coherent_kern_range(unsigned long, unsigned long);
+int feroceon_coherent_user_range(unsigned long, unsigned long);
+void feroceon_flush_kern_dcache_area(void *, size_t);
+void feroceon_dma_map_area(const void *, size_t, int);
+void feroceon_dma_unmap_area(const void *, size_t, int);
+void feroceon_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns feroceon_cache_fns __initconst = {
+	.flush_icache_all = feroceon_flush_icache_all,
+	.flush_kern_all = feroceon_flush_kern_cache_all,
+	.flush_kern_louis = feroceon_flush_kern_cache_all,
+	.flush_user_all = feroceon_flush_user_cache_all,
+	.flush_user_range = feroceon_flush_user_cache_range,
+	.coherent_kern_range = feroceon_coherent_kern_range,
+	.coherent_user_range = feroceon_coherent_user_range,
+	.flush_kern_dcache_area = feroceon_flush_kern_dcache_area,
+	.dma_map_area = feroceon_dma_map_area,
+	.dma_unmap_area = feroceon_dma_unmap_area,
+	.dma_flush_range = feroceon_dma_flush_range,
+};
+
+void feroceon_range_flush_kern_dcache_area(void *, size_t);
+void feroceon_range_dma_map_area(const void *, size_t, int);
+void feroceon_range_dma_flush_range(const void *, const void *);
+
+struct cpu_cache_fns feroceon_range_cache_fns __initconst = {
+	.flush_icache_all = feroceon_flush_icache_all,
+	.flush_kern_all = feroceon_flush_kern_cache_all,
+	.flush_kern_louis = feroceon_flush_kern_cache_all,
+	.flush_user_all = feroceon_flush_user_cache_all,
+	.flush_user_range = feroceon_flush_user_cache_range,
+	.coherent_kern_range = feroceon_coherent_kern_range,
+	.coherent_user_range = feroceon_coherent_user_range,
+	.flush_kern_dcache_area = feroceon_range_flush_kern_dcache_area,
+	.dma_map_area = feroceon_range_dma_map_area,
+	.dma_unmap_area = feroceon_dma_unmap_area,
+	.dma_flush_range = feroceon_range_dma_flush_range,
+};
+#endif

arch/arm/mm/fault.c

···
 	return false;
 }
 
+#ifdef CONFIG_CPU_TTBR0_PAN
+static inline bool ttbr0_usermode_access_allowed(struct pt_regs *regs)
+{
+	struct svc_pt_regs *svcregs;
+
+	/* If we are in user mode: permission granted */
+	if (user_mode(regs))
+		return true;
+
+	/* uaccess state saved above pt_regs on SVC exception entry */
+	svcregs = to_svc_pt_regs(regs);
+
+	return !(svcregs->ttbcr & TTBCR_EPD0);
+}
+#else
+static inline bool ttbr0_usermode_access_allowed(struct pt_regs *regs)
+{
+	return true;
+}
+#endif
+
 static int __kprobes
 do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 {
···
 	}
 
 	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
+
+	/*
+	 * Privileged access aborts with CONFIG_CPU_TTBR0_PAN enabled are
+	 * routed via the translation fault mechanism. Check whether uaccess
+	 * is disabled while in kernel mode.
+	 */
+	if (!ttbr0_usermode_access_allowed(regs))
+		goto no_context;
 
 	if (!(flags & FAULT_FLAG_USER))
 		goto lock_mmap;

arch/arm/mm/mmu.c

···
 	 */
 	cr = get_cr();
 	set_cr(cr & ~(CR_I | CR_C));
-	asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr));
-	asm volatile("mcr p15, 0, %0, c2, c0, 2"
-		: : "r" (ttbcr & ~(3 << 8 | 3 << 10)));
+	ttbcr = cpu_get_ttbcr();
+	cpu_set_ttbcr(ttbcr & ~(3 << 8 | 3 << 10));
 	flush_cache_all();
 
 	/*
···
 	lpae_pgtables_remap(offset, pa_pgd);
 
 	/* Re-enable the caches and cacheable TLB walks */
-	asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr));
+	cpu_set_ttbcr(ttbcr);
 	set_cr(cr);
 }
 

arch/arm/mm/proc-arm1020.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_arm1020_proc_init()
  */
-ENTRY(cpu_arm1020_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm1020_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm1020_proc_init)
 
 /*
  * cpu_arm1020_proc_fin()
  */
-ENTRY(cpu_arm1020_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm1020_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000 		@ ...i............
 	bic	r0, r0, #0x000e 		@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm1020_proc_fin)
 
 /*
  * cpu_arm1020_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm1020_reset)
+SYM_TYPED_FUNC_START(cpu_arm1020_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100 		@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm1020_reset)
+SYM_FUNC_END(cpu_arm1020_reset)
 	.popsection
 
 /*
  * cpu_arm1020_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm1020_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm1020_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm1020_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm1020_flush_icache_all)
+SYM_TYPED_FUNC_START(arm1020_flush_icache_all)
 #ifndef CONFIG_CPU_ICACHE_DISABLE
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 #endif
 	ret	lr
-ENDPROC(arm1020_flush_icache_all)
+SYM_FUNC_END(arm1020_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(arm1020_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm1020_flush_user_cache_all, arm1020_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm1020_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm1020_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags for this space
  */
-ENTRY(arm1020_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm1020_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020_coherent_kern_range)
-	/* FALLTRHOUGH */
+SYM_TYPED_FUNC_START(arm1020_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm1020_coherent_user_range
+#endif
+SYM_FUNC_END(arm1020_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020_coherent_user_range)
+SYM_TYPED_FUNC_START(arm1020_coherent_user_range)
 	mov	ip, #0
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 	mcr	p15, 0, ip, c7, c10, 4
···
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm1020_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm1020_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm1020_flush_kern_dcache_area)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	add	r1, r0, r1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020_dma_flush_range)
+SYM_TYPED_FUNC_START(arm1020_dma_flush_range)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	bic	r0, r0, #CACHE_DLINESIZE - 1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1020_dma_map_area)
+SYM_TYPED_FUNC_START(arm1020_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm1020_dma_clean_range
 	bcs	arm1020_dma_inv_range
 	b	arm1020_dma_flush_range
-ENDPROC(arm1020_dma_map_area)
+SYM_FUNC_END(arm1020_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1020_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm1020_dma_unmap_area)
 	ret	lr
-ENDPROC(arm1020_dma_unmap_area)
-
-	.globl	arm1020_flush_kern_cache_louis
-	.equ	arm1020_flush_kern_cache_louis, arm1020_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm1020
+SYM_FUNC_END(arm1020_dma_unmap_area)
 
 	.align	5
-ENTRY(cpu_arm1020_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm1020_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mov	ip, #0
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
···
 	bhi	1b
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm1020_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm1020_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm1020_switch_mm)
 #ifdef CONFIG_MMU
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mcr	p15, 0, r3, c7, c10, 4
···
 	mcr	p15, 0, r1, c8, c7, 0		@ invalidate I & D TLBs
 #endif /* CONFIG_MMU */
 	ret	lr
-        
+SYM_FUNC_END(cpu_arm1020_switch_mm)
+
 /*
  * cpu_arm1020_set_pte(ptep, pte)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm1020_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm1020_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm1020_set_pte_ext)
 
 	.type	__arm1020_setup, #function
 __arm1020_setup:

arch/arm/mm/proc-arm1020e.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_arm1020e_proc_init()
  */
-ENTRY(cpu_arm1020e_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm1020e_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm1020e_proc_init)
 
 /*
  * cpu_arm1020e_proc_fin()
  */
-ENTRY(cpu_arm1020e_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm1020e_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000 		@ ...i............
 	bic	r0, r0, #0x000e 		@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm1020e_proc_fin)
 
 /*
  * cpu_arm1020e_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm1020e_reset)
+SYM_TYPED_FUNC_START(cpu_arm1020e_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100 		@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm1020e_reset)
+SYM_FUNC_END(cpu_arm1020e_reset)
 	.popsection
 
 /*
  * cpu_arm1020e_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm1020e_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm1020e_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm1020e_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm1020e_flush_icache_all)
+SYM_TYPED_FUNC_START(arm1020e_flush_icache_all)
 #ifndef CONFIG_CPU_ICACHE_DISABLE
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 #endif
 	ret	lr
-ENDPROC(arm1020e_flush_icache_all)
+SYM_FUNC_END(arm1020e_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(arm1020e_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm1020e_flush_user_cache_all, arm1020e_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm1020e_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm1020e_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020e_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags for this space
  */
-ENTRY(arm1020e_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm1020e_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020e_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020e_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm1020e_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm1020e_coherent_user_range
+#endif
+SYM_FUNC_END(arm1020e_coherent_kern_range)
+
 /*
  *	coherent_user_range(start, end)
  *
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020e_coherent_user_range)
+SYM_TYPED_FUNC_START(arm1020e_coherent_user_range)
 	mov	ip, #0
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
···
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm1020e_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm1020e_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm1020e_flush_kern_dcache_area)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	add	r1, r0, r1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020e_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1020e_dma_flush_range)
+SYM_TYPED_FUNC_START(arm1020e_dma_flush_range)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	bic	r0, r0, #CACHE_DLINESIZE - 1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1020e_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1020e_dma_map_area)
+SYM_TYPED_FUNC_START(arm1020e_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm1020e_dma_clean_range
 	bcs	arm1020e_dma_inv_range
 	b	arm1020e_dma_flush_range
-ENDPROC(arm1020e_dma_map_area)
+SYM_FUNC_END(arm1020e_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1020e_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm1020e_dma_unmap_area)
 	ret	lr
-ENDPROC(arm1020e_dma_unmap_area)
-
-	.globl	arm1020e_flush_kern_cache_louis
-	.equ	arm1020e_flush_kern_cache_louis, arm1020e_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm1020e
+SYM_FUNC_END(arm1020e_dma_unmap_area)
 
 	.align	5
-ENTRY(cpu_arm1020e_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm1020e_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mov	ip, #0
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
···
 	bhi	1b
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm1020e_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm1020e_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm1020e_switch_mm)
 #ifdef CONFIG_MMU
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mcr	p15, 0, r3, c7, c10, 4
···
 	mcr	p15, 0, r1, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
-        
+SYM_FUNC_END(cpu_arm1020e_switch_mm)
+
 /*
  * cpu_arm1020e_set_pte(ptep, pte)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm1020e_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm1020e_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 #endif
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm1020e_set_pte_ext)
 
 	.type	__arm1020e_setup, #function
 __arm1020e_setup:

arch/arm/mm/proc-arm1022.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_arm1022_proc_init()
  */
-ENTRY(cpu_arm1022_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm1022_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm1022_proc_init)
 
 /*
  * cpu_arm1022_proc_fin()
  */
-ENTRY(cpu_arm1022_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm1022_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000 		@ ...i............
 	bic	r0, r0, #0x000e 		@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm1022_proc_fin)
 
 /*
  * cpu_arm1022_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm1022_reset)
+SYM_TYPED_FUNC_START(cpu_arm1022_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100 		@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm1022_reset)
+SYM_FUNC_END(cpu_arm1022_reset)
 	.popsection
 
 /*
  * cpu_arm1022_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm1022_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm1022_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm1022_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm1022_flush_icache_all)
+SYM_TYPED_FUNC_START(arm1022_flush_icache_all)
 #ifndef CONFIG_CPU_ICACHE_DISABLE
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 #endif
 	ret	lr
-ENDPROC(arm1022_flush_icache_all)
+SYM_FUNC_END(arm1022_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(arm1022_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm1022_flush_user_cache_all, arm1022_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm1022_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm1022_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1022_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags for this space
  */
-ENTRY(arm1022_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm1022_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1022_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1022_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm1022_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm1022_coherent_user_range
+#endif
+SYM_FUNC_END(arm1022_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1022_coherent_user_range)
+SYM_TYPED_FUNC_START(arm1022_coherent_user_range)
 	mov	ip, #0
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
···
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm1022_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm1022_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm1022_flush_kern_dcache_area)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	add	r1, r0, r1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1022_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1022_dma_flush_range)
+SYM_TYPED_FUNC_START(arm1022_dma_flush_range)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	bic	r0, r0, #CACHE_DLINESIZE - 1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1022_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1022_dma_map_area)
+SYM_TYPED_FUNC_START(arm1022_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm1022_dma_clean_range
 	bcs	arm1022_dma_inv_range
 	b	arm1022_dma_flush_range
-ENDPROC(arm1022_dma_map_area)
+SYM_FUNC_END(arm1022_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1022_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm1022_dma_unmap_area)
 	ret	lr
-ENDPROC(arm1022_dma_unmap_area)
-
-	.globl	arm1022_flush_kern_cache_louis
-	.equ	arm1022_flush_kern_cache_louis, arm1022_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm1022
+SYM_FUNC_END(arm1022_dma_unmap_area)
 
 	.align	5
-ENTRY(cpu_arm1022_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm1022_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mov	ip, #0
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
···
 	bhi	1b
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm1022_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm1022_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm1022_switch_mm)
 #ifdef CONFIG_MMU
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mov	r1, #(CACHE_DSEGMENTS - 1) << 5	@ 16 segments
···
 	mcr	p15, 0, r1, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
-        
+SYM_FUNC_END(cpu_arm1022_switch_mm)
+
 /*
  * cpu_arm1022_set_pte_ext(ptep, pte, ext)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm1022_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm1022_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 #endif
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm1022_set_pte_ext)
 
 	.type	__arm1022_setup, #function
 __arm1022_setup:

arch/arm/mm/proc-arm1026.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_arm1026_proc_init()
  */
-ENTRY(cpu_arm1026_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm1026_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm1026_proc_init)
 
 /*
  * cpu_arm1026_proc_fin()
  */
-ENTRY(cpu_arm1026_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm1026_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000 		@ ...i............
 	bic	r0, r0, #0x000e 		@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm1026_proc_fin)
 
 /*
  * cpu_arm1026_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm1026_reset)
+SYM_TYPED_FUNC_START(cpu_arm1026_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100 		@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm1026_reset)
+SYM_FUNC_END(cpu_arm1026_reset)
 	.popsection
 
 /*
  * cpu_arm1026_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm1026_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm1026_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm1026_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm1026_flush_icache_all)
+SYM_TYPED_FUNC_START(arm1026_flush_icache_all)
 #ifndef CONFIG_CPU_ICACHE_DISABLE
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 #endif
 	ret	lr
-ENDPROC(arm1026_flush_icache_all)
+SYM_FUNC_END(arm1026_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(arm1026_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm1026_flush_user_cache_all, arm1026_flush_kern_cache_all)
+
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm1026_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm1026_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1026_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags for this space
  */
-ENTRY(arm1026_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm1026_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 #endif
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1026_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1026_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm1026_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm1026_coherent_user_range
+#endif
+SYM_FUNC_END(arm1026_coherent_kern_range)
+
 /*
  *	coherent_user_range(start, end)
  *
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1026_coherent_user_range)
+SYM_TYPED_FUNC_START(arm1026_coherent_user_range)
 	mov	ip, #0
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
···
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm1026_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm1026_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm1026_flush_kern_dcache_area)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	add	r1, r0, r1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1026_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm1026_dma_flush_range)
+SYM_TYPED_FUNC_START(arm1026_dma_flush_range)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	bic	r0, r0, #CACHE_DLINESIZE - 1
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm1026_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1026_dma_map_area)
+SYM_TYPED_FUNC_START(arm1026_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm1026_dma_clean_range
 	bcs	arm1026_dma_inv_range
 	b	arm1026_dma_flush_range
-ENDPROC(arm1026_dma_map_area)
+SYM_FUNC_END(arm1026_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm1026_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm1026_dma_unmap_area)
 	ret	lr
-ENDPROC(arm1026_dma_unmap_area)
-
-	.globl	arm1026_flush_kern_cache_louis
-	.equ	arm1026_flush_kern_cache_louis, arm1026_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm1026
+SYM_FUNC_END(arm1026_dma_unmap_area)
 
 	.align	5
-ENTRY(cpu_arm1026_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm1026_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_DISABLE
 	mov	ip, #0
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
···
 	bhi	1b
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm1026_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm1026_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm1026_switch_mm)
 #ifdef CONFIG_MMU
 	mov	r1, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
···
 	mcr	p15, 0, r1, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
-        
+SYM_FUNC_END(cpu_arm1026_switch_mm)
+
 /*
  * cpu_arm1026_set_pte_ext(ptep, pte, ext)
  *
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm1026_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm1026_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 #endif
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm1026_set_pte_ext)
 
 	.type	__arm1026_setup, #function
 __arm1026_setup:

arch/arm/mm/proc-arm720.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
  *
  * Notes   : This processor does not require these
  */
-ENTRY(cpu_arm720_dcache_clean_area)
-ENTRY(cpu_arm720_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm720_dcache_clean_area)
 		ret	lr
+SYM_FUNC_END(cpu_arm720_dcache_clean_area)
 
-ENTRY(cpu_arm720_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm720_proc_init)
+		ret	lr
+SYM_FUNC_END(cpu_arm720_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm720_proc_fin)
 		mrc	p15, 0, r0, c1, c0, 0
 		bic	r0, r0, #0x1000			@ ...i............
 		bic	r0, r0, #0x000e			@ ............wca.
 		mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 		ret	lr
+SYM_FUNC_END(cpu_arm720_proc_fin)
 
 /*
  * Function: arm720_proc_do_idle(void)
  * Params  : r0 = unused
  * Purpose : put the processor in proper idle mode
  */
-ENTRY(cpu_arm720_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm720_do_idle)
 		ret	lr
+SYM_FUNC_END(cpu_arm720_do_idle)
 
 /*
  * Function: arm720_switch_mm(unsigned long pgd_phys)
···
  * Purpose : Perform a task switch, saving the old process' state and restoring
  *	     the new.
  */
-ENTRY(cpu_arm720_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm720_switch_mm)
 #ifdef CONFIG_MMU
 		mov	r1, #0
 		mcr	p15, 0, r1, c7, c7, 0		@ invalidate cache
···
 		mcr	p15, 0, r1, c8, c7, 0		@ flush TLB (v4)
 #endif
 		ret	lr
+SYM_FUNC_END(cpu_arm720_switch_mm)
 
 /*
  * Function: arm720_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext)
···
  * Purpose : Set a PTE and flush it out of any WB cache
  */
 	.align	5
-ENTRY(cpu_arm720_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm720_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext wc_disable=0
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm720_set_pte_ext)
 
 /*
  * Function: arm720_reset
···
  * Notes   : This sets up everything for a reset
  */
 		.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm720_reset)
+SYM_TYPED_FUNC_START(cpu_arm720_reset)
 		mov	ip, #0
 		mcr	p15, 0, ip, c7, c7, 0		@ invalidate cache
 #ifdef CONFIG_MMU
···
 		bic	ip, ip, #0x2100			@ ..v....s........
 		mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 		ret	r0
-ENDPROC(cpu_arm720_reset)
+SYM_FUNC_END(cpu_arm720_reset)
 		.popsection
 
 	.type	__arm710_setup, #function

arch/arm/mm/proc-arm740.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
  *
  * These are not required.
  */
-ENTRY(cpu_arm740_proc_init)
-ENTRY(cpu_arm740_do_idle)
-ENTRY(cpu_arm740_dcache_clean_area)
-ENTRY(cpu_arm740_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm740_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm740_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm740_do_idle)
+	ret	lr
+SYM_FUNC_END(cpu_arm740_do_idle)
+
+SYM_TYPED_FUNC_START(cpu_arm740_dcache_clean_area)
+	ret	lr
+SYM_FUNC_END(cpu_arm740_dcache_clean_area)
+
+SYM_TYPED_FUNC_START(cpu_arm740_switch_mm)
+	ret	lr
+SYM_FUNC_END(cpu_arm740_switch_mm)
 
 /*
  * cpu_arm740_proc_fin()
  */
-ENTRY(cpu_arm740_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm740_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0
 	bic	r0, r0, #0x3f000000		@ bank/f/lock/s
 	bic	r0, r0, #0x0000000c		@ w-buffer/cache
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm740_proc_fin)
 
 /*
  * cpu_arm740_reset(loc)
···
  * Notes   : This sets up everything for a reset
  */
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm740_reset)
+SYM_TYPED_FUNC_START(cpu_arm740_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c0, 0		@ invalidate cache
 	mrc	p15, 0, ip, c1, c0, 0		@ get ctrl register
 	bic	ip, ip, #0x0000000c		@ ............wc..
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm740_reset)
+SYM_FUNC_END(cpu_arm740_reset)
 	.popsection
 
 	.type	__arm740_setup, #function

arch/arm/mm/proc-arm7tdmi.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
  * cpu_arm7tdmi_switch_mm()
  *
  * These are not required.
- */
-ENTRY(cpu_arm7tdmi_proc_init)
-ENTRY(cpu_arm7tdmi_do_idle)
-ENTRY(cpu_arm7tdmi_dcache_clean_area)
-ENTRY(cpu_arm7tdmi_switch_mm)
-		ret	lr
+*/
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_init)
+	ret lr
+SYM_FUNC_END(cpu_arm7tdmi_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_do_idle)
+	ret lr
+SYM_FUNC_END(cpu_arm7tdmi_do_idle)
+
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_dcache_clean_area)
+	ret lr
+SYM_FUNC_END(cpu_arm7tdmi_dcache_clean_area)
+
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_switch_mm)
+	ret	lr
+SYM_FUNC_END(cpu_arm7tdmi_switch_mm)
 
 /*
  * cpu_arm7tdmi_proc_fin()
- */
-ENTRY(cpu_arm7tdmi_proc_fin)
-		ret	lr
+*/
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_fin)
+	ret	lr
+SYM_FUNC_END(cpu_arm7tdmi_proc_fin)
 
 /*
  * Function: cpu_arm7tdmi_reset(loc)
···
  * Purpose : Sets up everything for a reset and jump to the location for soft reset.
  */
 		.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm7tdmi_reset)
+SYM_TYPED_FUNC_START(cpu_arm7tdmi_reset)
 		ret	r0
-ENDPROC(cpu_arm7tdmi_reset)
+SYM_FUNC_END(cpu_arm7tdmi_reset)
 		.popsection
 
 		.type	__arm7tdmi_setup, #function

arch/arm/mm/proc-arm920.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_arm920_proc_init()
  */
-ENTRY(cpu_arm920_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm920_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm920_proc_init)
 
 /*
  * cpu_arm920_proc_fin()
  */
-ENTRY(cpu_arm920_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm920_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm920_proc_fin)
 
 /*
  * cpu_arm920_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm920_reset)
+SYM_TYPED_FUNC_START(cpu_arm920_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm920_reset)
+SYM_FUNC_END(cpu_arm920_reset)
 	.popsection
 
 /*
  * cpu_arm920_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm920_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm920_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
-
+SYM_FUNC_END(cpu_arm920_do_idle)
 
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm920_flush_icache_all)
+SYM_TYPED_FUNC_START(arm920_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm920_flush_icache_all)
+SYM_FUNC_END(arm920_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(arm920_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm920_flush_user_cache_all, arm920_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm920_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm920_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm920_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags for address space
  */
-ENTRY(arm920_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm920_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm920_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm920_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm920_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm920_coherent_user_range
+#endif
+SYM_FUNC_END(arm920_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm920_coherent_user_range)
+SYM_TYPED_FUNC_START(arm920_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm920_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm920_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm920_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm920_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm920_dma_flush_range)
+SYM_TYPED_FUNC_START(arm920_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm920_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm920_dma_map_area)
+SYM_TYPED_FUNC_START(arm920_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm920_dma_clean_range
 	bcs	arm920_dma_inv_range
 	b	arm920_dma_flush_range
-ENDPROC(arm920_dma_map_area)
+SYM_FUNC_END(arm920_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm920_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm920_dma_unmap_area)
 	ret	lr
-ENDPROC(arm920_dma_unmap_area)
+SYM_FUNC_END(arm920_dma_unmap_area)
 
-	.globl	arm920_flush_kern_cache_louis
-	.equ	arm920_flush_kern_cache_louis, arm920_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm920
-#endif
+#endif /* !CONFIG_CPU_DCACHE_WRITETHROUGH */
 
 
-ENTRY(cpu_arm920_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm920_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
 	subs	r1, r1, #CACHE_DLINESIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_arm920_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm920_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm920_switch_mm)
 #ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm920_switch_mm)
 
 /*
  * cpu_arm920_set_pte(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm920_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm920_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm920_set_pte_ext)
 
 /* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */
 .globl	cpu_arm920_suspend_size
 .equ	cpu_arm920_suspend_size, 4 * 3
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_arm920_do_suspend)
+SYM_TYPED_FUNC_START(cpu_arm920_do_suspend)
 	stmfd	sp!, {r4 - r6, lr}
 	mrc	p15, 0, r4, c13, c0, 0	@ PID
 	mrc	p15, 0, r5, c3, c0, 0	@ Domain ID
 	mrc	p15, 0, r6, c1, c0, 0	@ Control register
 	stmia	r0, {r4 - r6}
 	ldmfd	sp!, {r4 - r6, pc}
-ENDPROC(cpu_arm920_do_suspend)
+SYM_FUNC_END(cpu_arm920_do_suspend)
 
-ENTRY(cpu_arm920_do_resume)
+SYM_TYPED_FUNC_START(cpu_arm920_do_resume)
 	mov	ip, #0
 	mcr	p15, 0, ip, c8, c7, 0	@ invalidate I+D TLBs
 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I+D caches
···
 	mcr	p15, 0, r1, c2, c0, 0	@ TTB address
 	mov	r0, r6			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_arm920_do_resume)
+SYM_FUNC_END(cpu_arm920_do_resume)
 #endif
 
 	.type	__arm920_setup, #function

arch/arm/mm/proc-arm922.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_arm922_proc_init()
  */
-ENTRY(cpu_arm922_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm922_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm922_proc_init)
 
 /*
  * cpu_arm922_proc_fin()
  */
-ENTRY(cpu_arm922_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm922_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm922_proc_fin)
 
 /*
  * cpu_arm922_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm922_reset)
+SYM_TYPED_FUNC_START(cpu_arm922_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm922_reset)
+SYM_FUNC_END(cpu_arm922_reset)
 	.popsection
 
 /*
  * cpu_arm922_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm922_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm922_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
-
+SYM_FUNC_END(cpu_arm922_do_idle)
 
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm922_flush_icache_all)
+SYM_TYPED_FUNC_START(arm922_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm922_flush_icache_all)
+SYM_FUNC_END(arm922_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular
  *	address space.
  */
-ENTRY(arm922_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm922_flush_user_cache_all, arm922_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm922_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm922_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm922_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags describing address space
  */
-ENTRY(arm922_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm922_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm922_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm922_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm922_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm922_coherent_user_range
+#endif
+SYM_FUNC_END(arm922_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm922_coherent_user_range)
+SYM_TYPED_FUNC_START(arm922_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm922_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm922_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm922_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm922_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm922_dma_flush_range)
+SYM_TYPED_FUNC_START(arm922_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm922_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm922_dma_map_area)
+SYM_TYPED_FUNC_START(arm922_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm922_dma_clean_range
 	bcs	arm922_dma_inv_range
 	b	arm922_dma_flush_range
-ENDPROC(arm922_dma_map_area)
+SYM_FUNC_END(arm922_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm922_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm922_dma_unmap_area)
 	ret	lr
-ENDPROC(arm922_dma_unmap_area)
+SYM_FUNC_END(arm922_dma_unmap_area)
 
-	.globl	arm922_flush_kern_cache_louis
-	.equ	arm922_flush_kern_cache_louis, arm922_flush_kern_cache_all
+#endif /* !CONFIG_CPU_DCACHE_WRITETHROUGH */
 
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm922
-#endif
-
-
-ENTRY(cpu_arm922_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm922_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	bhi	1b
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm922_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm922_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm922_switch_mm)
 #ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm922_switch_mm)
 
 /*
  * cpu_arm922_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm922_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm922_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm922_set_pte_ext)
 
 	.type	__arm922_setup, #function
 __arm922_setup:

arch/arm/mm/proc-arm925.S

···
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_arm925_proc_init()
  */
-ENTRY(cpu_arm925_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm925_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm925_proc_init)
 
 /*
  * cpu_arm925_proc_fin()
  */
-ENTRY(cpu_arm925_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm925_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm925_proc_fin)
 
 /*
  * cpu_arm925_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm925_reset)
+SYM_TYPED_FUNC_START(cpu_arm925_reset)
 	/* Send software reset to MPU and DSP */
 	mov	ip, #0xff000000
 	orr	ip, ip, #0x00fe0000
 	orr	ip, ip, #0x0000ce00
 	mov	r4, #1
 	strh	r4, [ip, #0x10]
-ENDPROC(cpu_arm925_reset)
+SYM_FUNC_END(cpu_arm925_reset)
 	.popsection
 
 	mov	ip, #0
···
  * Called with IRQs disabled
  */
 	.align	10
-ENTRY(cpu_arm925_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm925_do_idle)
 	mov	r0, #0
 	mrc	p15, 0, r1, c1, c0, 0		@ Read control register
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain write buffer
···
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	mcr	p15, 0, r1, c1, c0, 0		@ Restore ICache enable
 	ret	lr
+SYM_FUNC_END(cpu_arm925_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm925_flush_icache_all)
+SYM_TYPED_FUNC_START(arm925_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm925_flush_icache_all)
+SYM_FUNC_END(arm925_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular
  *	address space.
  */
-ENTRY(arm925_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm925_flush_user_cache_all, arm925_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm925_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm925_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm925_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags describing address space
  */
-ENTRY(arm925_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm925_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm925_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm925_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm925_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm925_coherent_user_range
+#endif
+SYM_FUNC_END(arm925_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm925_coherent_user_range)
+SYM_TYPED_FUNC_START(arm925_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm925_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm925_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm925_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm925_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm925_dma_flush_range)
+SYM_TYPED_FUNC_START(arm925_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm925_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm925_dma_map_area)
+SYM_TYPED_FUNC_START(arm925_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm925_dma_clean_range
 	bcs	arm925_dma_inv_range
 	b	arm925_dma_flush_range
-ENDPROC(arm925_dma_map_area)
+SYM_FUNC_END(arm925_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm925_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm925_dma_unmap_area)
 	ret	lr
-ENDPROC(arm925_dma_unmap_area)
+SYM_FUNC_END(arm925_dma_unmap_area)
 
-	.globl	arm925_flush_kern_cache_louis
-	.equ	arm925_flush_kern_cache_louis, arm925_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm925
-
-ENTRY(cpu_arm925_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm925_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 #endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_arm925_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm925_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm925_switch_mm)
 #ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm925_switch_mm)
 
 /*
  * cpu_arm925_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm925_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm925_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif /* CONFIG_MMU */
 	ret	lr
+SYM_FUNC_END(cpu_arm925_set_pte_ext)
 
 	.type	__arm925_setup, #function
 __arm925_setup:

arch/arm/mm/proc-arm926.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_arm926_proc_init()
  */
-ENTRY(cpu_arm926_proc_init)
+SYM_TYPED_FUNC_START(cpu_arm926_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm926_proc_init)
 
 /*
  * cpu_arm926_proc_fin()
  */
-ENTRY(cpu_arm926_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm926_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm926_proc_fin)
 
 /*
  * cpu_arm926_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm926_reset)
+SYM_TYPED_FUNC_START(cpu_arm926_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm926_reset)
+SYM_FUNC_END(cpu_arm926_reset)
 	.popsection
 
 /*
···
  * Called with IRQs disabled
  */
 	.align	10
-ENTRY(cpu_arm926_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm926_do_idle)
 	mov	r0, #0
 	mrc	p15, 0, r1, c1, c0, 0		@ Read control register
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain write buffer
···
 	mcr	p15, 0, r1, c1, c0, 0		@ Restore ICache enable
 	msr	cpsr_c, r3			@ Restore FIQ state
 	ret	lr
+SYM_FUNC_END(cpu_arm926_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm926_flush_icache_all)
+SYM_TYPED_FUNC_START(arm926_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm926_flush_icache_all)
+SYM_FUNC_END(arm926_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular
  *	address space.
  */
-ENTRY(arm926_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm926_flush_user_cache_all, arm926_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm926_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm926_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm926_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags describing address space
  */
-ENTRY(arm926_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm926_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm926_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm926_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm926_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm926_coherent_user_range
+#endif
+SYM_FUNC_END(arm926_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm926_coherent_user_range)
+SYM_TYPED_FUNC_START(arm926_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm926_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm926_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm926_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm926_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm926_dma_flush_range)
+SYM_TYPED_FUNC_START(arm926_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm926_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm926_dma_map_area)
+SYM_TYPED_FUNC_START(arm926_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm926_dma_clean_range
 	bcs	arm926_dma_inv_range
 	b	arm926_dma_flush_range
-ENDPROC(arm926_dma_map_area)
+SYM_FUNC_END(arm926_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm926_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm926_dma_unmap_area)
 	ret	lr
-ENDPROC(arm926_dma_unmap_area)
+SYM_FUNC_END(arm926_dma_unmap_area)
 
-	.globl	arm926_flush_kern_cache_louis
-	.equ	arm926_flush_kern_cache_louis, arm926_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm926
-
-ENTRY(cpu_arm926_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm926_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 #endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_arm926_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_arm926_switch_mm)
+
+SYM_TYPED_FUNC_START(cpu_arm926_switch_mm)
 #ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm926_switch_mm)
 
 /*
  * cpu_arm926_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_arm926_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_arm926_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_arm926_set_pte_ext)
 
 /* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */
 .globl	cpu_arm926_suspend_size
 .equ	cpu_arm926_suspend_size, 4 * 3
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_arm926_do_suspend)
+SYM_TYPED_FUNC_START(cpu_arm926_do_suspend)
 	stmfd	sp!, {r4 - r6, lr}
 	mrc	p15, 0, r4, c13, c0, 0	@ PID
 	mrc	p15, 0, r5, c3, c0, 0	@ Domain ID
 	mrc	p15, 0, r6, c1, c0, 0	@ Control register
 	stmia	r0, {r4 - r6}
 	ldmfd	sp!, {r4 - r6, pc}
-ENDPROC(cpu_arm926_do_suspend)
+SYM_FUNC_END(cpu_arm926_do_suspend)
 
-ENTRY(cpu_arm926_do_resume)
+SYM_TYPED_FUNC_START(cpu_arm926_do_resume)
 	mov	ip, #0
 	mcr	p15, 0, ip, c8, c7, 0	@ invalidate I+D TLBs
 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I+D caches
···
 	mcr	p15, 0, r1, c2, c0, 0	@ TTB address
 	mov	r0, r6			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_arm926_do_resume)
+SYM_FUNC_END(cpu_arm926_do_resume)
 #endif
 
 	.type	__arm926_setup, #function

arch/arm/mm/proc-arm940.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
  *
  * These are not required.
  */
-ENTRY(cpu_arm940_proc_init)
-ENTRY(cpu_arm940_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm940_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm940_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm940_switch_mm)
+	ret	lr
+SYM_FUNC_END(cpu_arm940_switch_mm)
 
 /*
  * cpu_arm940_proc_fin()
  */
-ENTRY(cpu_arm940_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm940_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x00001000		@ i-cache
 	bic	r0, r0, #0x00000004		@ d-cache
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm940_proc_fin)
 
 /*
  * cpu_arm940_reset(loc)
···
  * Notes   : This sets up everything for a reset
  */
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm940_reset)
+SYM_TYPED_FUNC_START(cpu_arm940_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c5, 0		@ flush I cache
 	mcr	p15, 0, ip, c7, c6, 0		@ flush D cache
···
 	bic	ip, ip, #0x00001000		@ i-cache
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm940_reset)
+SYM_FUNC_END(cpu_arm940_reset)
 	.popsection
 
 /*
  * cpu_arm940_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm940_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm940_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm940_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm940_flush_icache_all)
+SYM_TYPED_FUNC_START(arm940_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm940_flush_icache_all)
+SYM_FUNC_END(arm940_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
  */
-ENTRY(arm940_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm940_flush_user_cache_all, arm940_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm940_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm940_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
-	/* FALLTHROUGH */
+	b	arm940_flush_user_cache_range
+SYM_FUNC_END(arm940_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- end	- end address (exclusive)
  *	- flags	- vm_flags describing address space
  */
-ENTRY(arm940_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm940_flush_user_cache_range)
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
 	mcr	p15, 0, ip, c7, c6, 0		@ flush D cache
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm940_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm940_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm940_coherent_kern_range)
+	b	arm940_flush_kern_dcache_area
+SYM_FUNC_END(arm940_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm940_coherent_user_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm940_coherent_user_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm940_flush_kern_dcache_area
+#endif
+SYM_FUNC_END(arm940_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(arm940_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm940_flush_kern_dcache_area)
 	mov	r0, #0
 	mov	r1, #(CACHE_DSEGMENTS - 1) << 4	@ 4 segments
 1:	orr	r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm940_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- end	- virtual end address
  */
 arm940_dma_clean_range:
-ENTRY(cpu_arm940_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm940_dcache_clean_area)
 	mov	ip, #0
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 	mov	r1, #(CACHE_DSEGMENTS - 1) << 4	@ 4 segments
···
 #endif
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_arm940_dcache_clean_area)
 
 /*
  *	dma_flush_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm940_dma_flush_range)
+SYM_TYPED_FUNC_START(arm940_dma_flush_range)
 	mov	ip, #0
 	mov	r1, #(CACHE_DSEGMENTS - 1) << 4	@ 4 segments
 1:	orr	r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
···
 	bcs	1b				@ segments 7 to 0
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm940_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm940_dma_map_area)
+SYM_TYPED_FUNC_START(arm940_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm940_dma_clean_range
 	bcs	arm940_dma_inv_range
 	b	arm940_dma_flush_range
-ENDPROC(arm940_dma_map_area)
+SYM_FUNC_END(arm940_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm940_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm940_dma_unmap_area)
 	ret	lr
-ENDPROC(arm940_dma_unmap_area)
-
-	.globl	arm940_flush_kern_cache_louis
-	.equ	arm940_flush_kern_cache_louis, arm940_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm940
+SYM_FUNC_END(arm940_dma_unmap_area)
 
 	.type	__arm940_setup, #function
 __arm940_setup:

arch/arm/mm/proc-arm946.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
  *
  * These are not required.
  */
-ENTRY(cpu_arm946_proc_init)
-ENTRY(cpu_arm946_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm946_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_arm946_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm946_switch_mm)
+	ret	lr
+SYM_FUNC_END(cpu_arm946_switch_mm)
 
 /*
  * cpu_arm946_proc_fin()
  */
-ENTRY(cpu_arm946_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm946_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x00001000		@ i-cache
 	bic	r0, r0, #0x00000004		@ d-cache
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_arm946_proc_fin)
 
 /*
  * cpu_arm946_reset(loc)
···
  * Notes   : This sets up everything for a reset
  */
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm946_reset)
+SYM_TYPED_FUNC_START(cpu_arm946_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c5, 0		@ flush I cache
 	mcr	p15, 0, ip, c7, c6, 0		@ flush D cache
···
 	bic	ip, ip, #0x00001000		@ i-cache
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_arm946_reset)
+SYM_FUNC_END(cpu_arm946_reset)
 	.popsection
 
 /*
  * cpu_arm946_do_idle()
  */
 	.align	5
-ENTRY(cpu_arm946_do_idle)
+SYM_TYPED_FUNC_START(cpu_arm946_do_idle)
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_arm946_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(arm946_flush_icache_all)
+SYM_TYPED_FUNC_START(arm946_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(arm946_flush_icache_all)
+SYM_FUNC_END(arm946_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
  */
-ENTRY(arm946_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(arm946_flush_user_cache_all, arm946_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(arm946_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(arm946_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ flush I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm946_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- flags	- vm_flags describing address space
  * (same as arm926)
  */
-ENTRY(arm946_flush_user_cache_range)
+SYM_TYPED_FUNC_START(arm946_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm946_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(arm946_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(arm946_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	arm946_coherent_user_range
+#endif
+SYM_FUNC_END(arm946_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- end	- virtual end address
  * (same as arm926)
  */
-ENTRY(arm946_coherent_user_range)
+SYM_TYPED_FUNC_START(arm946_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(arm946_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- size	- region size
  * (same as arm926)
  */
-ENTRY(arm946_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(arm946_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm946_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *
  * (same as arm926)
  */
-ENTRY(arm946_dma_flush_range)
+SYM_TYPED_FUNC_START(arm946_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(arm946_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm946_dma_map_area)
+SYM_TYPED_FUNC_START(arm946_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	arm946_dma_clean_range
 	bcs	arm946_dma_inv_range
 	b	arm946_dma_flush_range
-ENDPROC(arm946_dma_map_area)
+SYM_FUNC_END(arm946_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(arm946_dma_unmap_area)
+SYM_TYPED_FUNC_START(arm946_dma_unmap_area)
 	ret	lr
-ENDPROC(arm946_dma_unmap_area)
+SYM_FUNC_END(arm946_dma_unmap_area)
 
-	.globl	arm946_flush_kern_cache_louis
-	.equ	arm946_flush_kern_cache_louis, arm946_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions arm946
-
-ENTRY(cpu_arm946_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_arm946_dcache_clean_area)
 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 #endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_arm946_dcache_clean_area)
 
 	.type	__arm946_setup, #function
 __arm946_setup:

arch/arm/mm/proc-arm9tdmi.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
  *
  * These are not required.
  */
-ENTRY(cpu_arm9tdmi_proc_init)
-ENTRY(cpu_arm9tdmi_do_idle)
-ENTRY(cpu_arm9tdmi_dcache_clean_area)
-ENTRY(cpu_arm9tdmi_switch_mm)
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_init)
 		ret	lr
+SYM_FUNC_END(cpu_arm9tdmi_proc_init)
+
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_do_idle)
+		ret	lr
+SYM_FUNC_END(cpu_arm9tdmi_do_idle)
+
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_dcache_clean_area)
+		ret	lr
+SYM_FUNC_END(cpu_arm9tdmi_dcache_clean_area)
+
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_switch_mm)
+		ret	lr
+SYM_FUNC_END(cpu_arm9tdmi_switch_mm)
 
 /*
  * cpu_arm9tdmi_proc_fin()
  */
-ENTRY(cpu_arm9tdmi_proc_fin)
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_fin)
 		ret	lr
+SYM_FUNC_END(cpu_arm9tdmi_proc_fin)
 
 /*
  * Function: cpu_arm9tdmi_reset(loc)
···
  * Purpose : Sets up everything for a reset and jump to the location for soft reset.
  */
 		.pushsection	.idmap.text, "ax"
-ENTRY(cpu_arm9tdmi_reset)
+SYM_TYPED_FUNC_START(cpu_arm9tdmi_reset)
 		ret	r0
-ENDPROC(cpu_arm9tdmi_reset)
+SYM_FUNC_END(cpu_arm9tdmi_reset)
 		.popsection
 
 		.type	__arm9tdmi_setup, #function

arch/arm/mm/proc-fa526.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_fa526_proc_init()
  */
-ENTRY(cpu_fa526_proc_init)
+SYM_TYPED_FUNC_START(cpu_fa526_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_fa526_proc_init)
 
 /*
  * cpu_fa526_proc_fin()
  */
-ENTRY(cpu_fa526_proc_fin)
+SYM_TYPED_FUNC_START(cpu_fa526_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
···
 	nop
 	nop
 	ret	lr
+SYM_FUNC_END(cpu_fa526_proc_fin)
 
 /*
  * cpu_fa526_reset(loc)
···
  */
 	.align	4
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_fa526_reset)
+SYM_TYPED_FUNC_START(cpu_fa526_reset)
 /* TODO: Use CP8 if possible... */
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
···
 	nop
 	nop
 	ret	r0
-ENDPROC(cpu_fa526_reset)
+SYM_FUNC_END(cpu_fa526_reset)
 	.popsection
 
 /*
  * cpu_fa526_do_idle()
  */
 	.align	4
-ENTRY(cpu_fa526_do_idle)
+SYM_TYPED_FUNC_START(cpu_fa526_do_idle)
 	ret	lr
+SYM_FUNC_END(cpu_fa526_do_idle)
 
-
-ENTRY(cpu_fa526_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_fa526_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
 	subs	r1, r1, #CACHE_DLINESIZE
 	bhi	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_fa526_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	4
-ENTRY(cpu_fa526_switch_mm)
+SYM_TYPED_FUNC_START(cpu_fa526_switch_mm)
 #ifdef CONFIG_MMU
 	mov	ip, #0
 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
···
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate UTLB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_fa526_switch_mm)
 
 /*
  * cpu_fa526_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	4
-ENTRY(cpu_fa526_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_fa526_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_fa526_set_pte_ext)
 
 	.type	__fa526_setup, #function
 __fa526_setup:

arch/arm/mm/proc-feroceon.S

···
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_feroceon_proc_init()
  */
-ENTRY(cpu_feroceon_proc_init)
+SYM_TYPED_FUNC_START(cpu_feroceon_proc_init)
 	mrc	p15, 0, r0, c0, c0, 1		@ read cache type register
 	ldr	r1, __cache_params
 	mov	r2, #(16 << 5)
···
 	str_l	r1, VFP_arch_feroceon, r2
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_feroceon_proc_init)
 
 /*
  * cpu_feroceon_proc_fin()
  */
-ENTRY(cpu_feroceon_proc_fin)
+SYM_TYPED_FUNC_START(cpu_feroceon_proc_fin)
 #if defined(CONFIG_CACHE_FEROCEON_L2) && \
 	!defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH)
 	mov	r0, #0
···
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_feroceon_proc_fin)
 
 /*
  * cpu_feroceon_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_feroceon_reset)
+SYM_TYPED_FUNC_START(cpu_feroceon_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_feroceon_reset)
+SYM_FUNC_END(cpu_feroceon_reset)
 	.popsection
 
 /*
···
  * Called with IRQs disabled
  */
 	.align	5
-ENTRY(cpu_feroceon_do_idle)
+SYM_TYPED_FUNC_START(cpu_feroceon_do_idle)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain write buffer
 	mcr	p15, 0, r0, c7, c0, 4		@ Wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_feroceon_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(feroceon_flush_icache_all)
+SYM_TYPED_FUNC_START(feroceon_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(feroceon_flush_icache_all)
+SYM_FUNC_END(feroceon_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	address space.
  */
 	.align	5
-ENTRY(feroceon_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(feroceon_flush_user_cache_all, feroceon_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(feroceon_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(feroceon_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *	- flags	- vm_flags describing address space
  */
 	.align	5
-ENTRY(feroceon_flush_user_cache_range)
+SYM_TYPED_FUNC_START(feroceon_flush_user_cache_range)
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
 	bgt	__flush_whole_cache
···
 	mov	ip, #0
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- end	- virtual end address
  */
 	.align	5
-ENTRY(feroceon_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(feroceon_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	feroceon_coherent_user_range
+#endif
+SYM_FUNC_END(feroceon_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(feroceon_coherent_user_range)
+SYM_TYPED_FUNC_START(feroceon_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(feroceon_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- size	- region size
  */
 	.align	5
-ENTRY(feroceon_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(feroceon_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_flush_kern_dcache_area)
 
 	.align	5
-ENTRY(feroceon_range_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(feroceon_range_flush_kern_dcache_area)
 	mrs	r2, cpsr
 	add	r1, r0, #PAGE_SZ - CACHE_DLINESIZE	@ top addr is inclusive
 	orr	r3, r2, #PSR_I_BIT
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_range_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- end	- virtual end address
  */
 	.align	5
-ENTRY(feroceon_dma_flush_range)
+SYM_TYPED_FUNC_START(feroceon_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_dma_flush_range)
 
 	.align	5
-ENTRY(feroceon_range_dma_flush_range)
+SYM_TYPED_FUNC_START(feroceon_range_dma_flush_range)
 	mrs	r2, cpsr
 	cmp	r1, r0
 	subne	r1, r1, #1			@ top address is inclusive
···
 	msr	cpsr_c, r2			@ restore interrupts
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(feroceon_range_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(feroceon_dma_map_area)
+SYM_TYPED_FUNC_START(feroceon_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	feroceon_dma_clean_range
 	bcs	feroceon_dma_inv_range
 	b	feroceon_dma_flush_range
-ENDPROC(feroceon_dma_map_area)
+SYM_FUNC_END(feroceon_dma_map_area)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(feroceon_range_dma_map_area)
+SYM_TYPED_FUNC_START(feroceon_range_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	feroceon_range_dma_clean_range
 	bcs	feroceon_range_dma_inv_range
 	b	feroceon_range_dma_flush_range
-ENDPROC(feroceon_range_dma_map_area)
+SYM_FUNC_END(feroceon_range_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(feroceon_dma_unmap_area)
+SYM_TYPED_FUNC_START(feroceon_dma_unmap_area)
 	ret	lr
-ENDPROC(feroceon_dma_unmap_area)
-
-	.globl	feroceon_flush_kern_cache_louis
-	.equ	feroceon_flush_kern_cache_louis, feroceon_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions feroceon
-
-.macro range_alias basename
-	.globl feroceon_range_\basename
-	.type feroceon_range_\basename , %function
-	.equ feroceon_range_\basename , feroceon_\basename
-.endm
-
-/*
- * Most of the cache functions are unchanged for this case.
- * Export suitable alias symbols for the unchanged functions:
- */
-	range_alias flush_icache_all
-	range_alias flush_user_cache_all
-	range_alias flush_kern_cache_all
-	range_alias flush_kern_cache_louis
-	range_alias flush_user_cache_range
-	range_alias coherent_kern_range
-	range_alias coherent_user_range
-	range_alias dma_unmap_area
-
-	define_cache_functions feroceon_range
+SYM_FUNC_END(feroceon_dma_unmap_area)
 
 	.align	5
-ENTRY(cpu_feroceon_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_feroceon_dcache_clean_area)
 #if defined(CONFIG_CACHE_FEROCEON_L2) && \
 	!defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH)
 	mov	r2, r0
···
 #endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_feroceon_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_feroceon_switch_mm)
+SYM_TYPED_FUNC_START(cpu_feroceon_switch_mm)
 #ifdef CONFIG_MMU
 	/*
 	 * Note: we wish to call __flush_whole_cache but we need to preserve
···
 #else
 	ret	lr
 #endif
+SYM_FUNC_END(cpu_feroceon_switch_mm)
 
 /*
  * cpu_feroceon_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_feroceon_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_feroceon_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext wc_disable=0
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_feroceon_set_pte_ext)
 
 /* Suspend/resume support: taken from arch/arm/mm/proc-arm926.S */
 .globl	cpu_feroceon_suspend_size
 .equ	cpu_feroceon_suspend_size, 4 * 3
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_feroceon_do_suspend)
+SYM_TYPED_FUNC_START(cpu_feroceon_do_suspend)
 	stmfd	sp!, {r4 - r6, lr}
 	mrc	p15, 0, r4, c13, c0, 0	@ PID
 	mrc	p15, 0, r5, c3, c0, 0	@ Domain ID
 	mrc	p15, 0, r6, c1, c0, 0	@ Control register
 	stmia	r0, {r4 - r6}
 	ldmfd	sp!, {r4 - r6, pc}
-ENDPROC(cpu_feroceon_do_suspend)
+SYM_FUNC_END(cpu_feroceon_do_suspend)
 
-ENTRY(cpu_feroceon_do_resume)
+SYM_TYPED_FUNC_START(cpu_feroceon_do_resume)
 	mov	ip, #0
 	mcr	p15, 0, ip, c8, c7, 0	@ invalidate I+D TLBs
 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I+D caches
···
 	mcr	p15, 0, r1, c2, c0, 0	@ TTB address
 	mov	r0, r6			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_feroceon_do_resume)
+SYM_FUNC_END(cpu_feroceon_do_resume)
 #endif
 
 	.type	__feroceon_setup, #function

arch/arm/mm/proc-macros.S

···
 #endif
 .endm
 
-.macro define_cache_functions name:req
-	.align 2
-	.type	\name\()_cache_fns, #object
-ENTRY(\name\()_cache_fns)
-	.long	\name\()_flush_icache_all
-	.long	\name\()_flush_kern_cache_all
-	.long   \name\()_flush_kern_cache_louis
-	.long	\name\()_flush_user_cache_all
-	.long	\name\()_flush_user_cache_range
-	.long	\name\()_coherent_kern_range
-	.long	\name\()_coherent_user_range
-	.long	\name\()_flush_kern_dcache_area
-	.long	\name\()_dma_map_area
-	.long	\name\()_dma_unmap_area
-	.long	\name\()_dma_flush_range
-	.size	\name\()_cache_fns, . - \name\()_cache_fns
-.endm
-
-.macro define_tlb_functions name:req, flags_up:req, flags_smp
-	.type	\name\()_tlb_fns, #object
-	.align 2
-ENTRY(\name\()_tlb_fns)
-	.long	\name\()_flush_user_tlb_range
-	.long	\name\()_flush_kern_tlb_range
-	.ifnb \flags_smp
-		ALT_SMP(.long	\flags_smp )
-		ALT_UP(.long	\flags_up )
-	.else
-		.long	\flags_up
-	.endif
-	.size	\name\()_tlb_fns, . - \name\()_tlb_fns
-.endm
-
 .macro globl_equ x, y
 	.globl	\x
 	.equ	\x, \y

arch/arm/mm/proc-mohawk.S

···
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
 /*
  * cpu_mohawk_proc_init()
  */
-ENTRY(cpu_mohawk_proc_init)
+SYM_TYPED_FUNC_START(cpu_mohawk_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_mohawk_proc_init)
 
 /*
  * cpu_mohawk_proc_fin()
  */
-ENTRY(cpu_mohawk_proc_fin)
+SYM_TYPED_FUNC_START(cpu_mohawk_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1800			@ ...iz...........
 	bic	r0, r0, #0x0006			@ .............ca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_mohawk_proc_fin)
 
 /*
  * cpu_mohawk_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_mohawk_reset)
+SYM_TYPED_FUNC_START(cpu_mohawk_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_mohawk_reset)
+SYM_FUNC_END(cpu_mohawk_reset)
 	.popsection
 
 /*
···
  * Called with IRQs disabled
  */
 	.align	5
-ENTRY(cpu_mohawk_do_idle)
+SYM_TYPED_FUNC_START(cpu_mohawk_do_idle)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c10, 4		@ drain write buffer
 	mcr	p15, 0, r0, c7, c0, 4		@ wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_mohawk_do_idle)
 
 /*
  *	flush_icache_all()
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(mohawk_flush_icache_all)
+SYM_TYPED_FUNC_START(mohawk_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(mohawk_flush_icache_all)
+SYM_FUNC_END(mohawk_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Clean and invalidate all cache entries in a particular
  *	address space.
  */
-ENTRY(mohawk_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(mohawk_flush_user_cache_all, mohawk_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(mohawk_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(mohawk_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 0		@ drain write buffer
 	ret	lr
+SYM_FUNC_END(mohawk_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, flags)
···
  *
  * (same as arm926)
  */
-ENTRY(mohawk_flush_user_cache_range)
+SYM_TYPED_FUNC_START(mohawk_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
···
 	tst	r2, #VM_EXEC
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(mohawk_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(mohawk_coherent_kern_range)
-	/* FALLTHROUGH */
+SYM_TYPED_FUNC_START(mohawk_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	mohawk_coherent_user_range
+#endif
+SYM_FUNC_END(mohawk_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *
  * (same as arm926)
  */
-ENTRY(mohawk_coherent_user_range)
+SYM_TYPED_FUNC_START(mohawk_coherent_user_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	r0, #0
 	ret	lr
+SYM_FUNC_END(mohawk_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(mohawk_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(mohawk_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(mohawk_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start	- virtual start address
  *	- end	- virtual end address
  */
-ENTRY(mohawk_dma_flush_range)
+SYM_TYPED_FUNC_START(mohawk_dma_flush_range)
 	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:
 	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(mohawk_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(mohawk_dma_map_area)
+SYM_TYPED_FUNC_START(mohawk_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	mohawk_dma_clean_range
 	bcs	mohawk_dma_inv_range
 	b	mohawk_dma_flush_range
-ENDPROC(mohawk_dma_map_area)
+SYM_FUNC_END(mohawk_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(mohawk_dma_unmap_area)
+SYM_TYPED_FUNC_START(mohawk_dma_unmap_area)
 	ret	lr
-ENDPROC(mohawk_dma_unmap_area)
+SYM_FUNC_END(mohawk_dma_unmap_area)
 
-	.globl	mohawk_flush_kern_cache_louis
-	.equ	mohawk_flush_kern_cache_louis, mohawk_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions mohawk
-
-ENTRY(cpu_mohawk_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_mohawk_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
 	subs	r1, r1, #CACHE_DLINESIZE
 	bhi	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
+SYM_FUNC_END(cpu_mohawk_dcache_clean_area)
 
 /*
  * cpu_mohawk_switch_mm(pgd)
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_mohawk_switch_mm)
+SYM_TYPED_FUNC_START(cpu_mohawk_switch_mm)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c14, 0		@ clean & invalidate all D cache
 	mcr	p15, 0, ip, c7, c5, 0		@ invalidate I cache
···
 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 	ret	lr
+SYM_FUNC_END(cpu_mohawk_switch_mm)
 
 /*
  * cpu_mohawk_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_mohawk_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_mohawk_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	ret	lr
 #endif
+SYM_FUNC_END(cpu_mohawk_set_pte_ext)
 
 .globl	cpu_mohawk_suspend_size
 .equ	cpu_mohawk_suspend_size, 4 * 6
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_mohawk_do_suspend)
+SYM_TYPED_FUNC_START(cpu_mohawk_do_suspend)
 	stmfd	sp!, {r4 - r9, lr}
 	mrc	p14, 0, r4, c6, c0, 0	@ clock configuration, for turbo mode
 	mrc	p15, 0, r5, c15, c1, 0	@ CP access reg
···
 	bic	r4, r4, #2		@ clear frequency change bit
 	stmia	r0, {r4 - r9}		@ store cp regs
 	ldmia	sp!, {r4 - r9, pc}
-ENDPROC(cpu_mohawk_do_suspend)
+SYM_FUNC_END(cpu_mohawk_do_suspend)
 
-ENTRY(cpu_mohawk_do_resume)
+SYM_TYPED_FUNC_START(cpu_mohawk_do_resume)
 	ldmia	r0, {r4 - r9}		@ load cp regs
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I & D caches, BTB
···
 	mcr	p15, 0, r8, c1, c0, 1	@ auxiliary control reg
 	mov	r0, r9			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_mohawk_do_resume)
+SYM_FUNC_END(cpu_mohawk_do_resume)
 #endif
 
 	.type	__mohawk_setup, #function

arch/arm/mm/proc-sa110.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_sa110_proc_init()
  */
-ENTRY(cpu_sa110_proc_init)
+SYM_TYPED_FUNC_START(cpu_sa110_proc_init)
 	mov	r0, #0
 	mcr	p15, 0, r0, c15, c1, 2		@ Enable clock switching
 	ret	lr
+SYM_FUNC_END(cpu_sa110_proc_init)
 
 /*
  * cpu_sa110_proc_fin()
  */
-ENTRY(cpu_sa110_proc_fin)
+SYM_TYPED_FUNC_START(cpu_sa110_proc_fin)
 	mov	r0, #0
 	mcr	p15, 0, r0, c15, c2, 2		@ Disable clock switching
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
···
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_sa110_proc_fin)
 
 /*
  * cpu_sa110_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_sa110_reset)
+SYM_TYPED_FUNC_START(cpu_sa110_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_sa110_reset)
+SYM_FUNC_END(cpu_sa110_reset)
 	.popsection
 
 /*
···
  */
 	.align	5
 
-ENTRY(cpu_sa110_do_idle)
+SYM_TYPED_FUNC_START(cpu_sa110_do_idle)
 	mcr	p15, 0, ip, c15, c2, 2		@ disable clock switching
 	ldr	r1, =UNCACHEABLE_ADDR		@ load from uncacheable loc
 	ldr	r1, [r1, #0]			@ force switch to MCLK
···
 	mov	r0, r0				@ safety
 	mcr	p15, 0, r0, c15, c1, 2		@ enable clock switching
 	ret	lr
+SYM_FUNC_END(cpu_sa110_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  * addr: cache-unaligned virtual address
  */
 	.align	5
-ENTRY(cpu_sa110_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_sa110_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #DCACHELINESIZE
 	subs	r1, r1, #DCACHELINESIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_sa110_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_sa110_switch_mm)
+SYM_TYPED_FUNC_START(cpu_sa110_switch_mm)
 #ifdef CONFIG_MMU
 	str	lr, [sp, #-4]!
 	bl	v4wb_flush_kern_cache_all	@ clears IP
···
 #else
 	ret	lr
 #endif
+SYM_FUNC_END(cpu_sa110_switch_mm)
 
 /*
  * cpu_sa110_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_sa110_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_sa110_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext wc_disable=0
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_sa110_set_pte_ext)
 
 	.type	__sa110_setup, #function
 __sa110_setup:

arch/arm/mm/proc-sa1100.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
···
 /*
  * cpu_sa1100_proc_init()
  */
-ENTRY(cpu_sa1100_proc_init)
+SYM_TYPED_FUNC_START(cpu_sa1100_proc_init)
 	mov	r0, #0
 	mcr	p15, 0, r0, c15, c1, 2		@ Enable clock switching
 	mcr	p15, 0, r0, c9, c0, 5		@ Allow read-buffer operations from userland
 	ret	lr
+SYM_FUNC_END(cpu_sa1100_proc_init)
 
 /*
  * cpu_sa1100_proc_fin()
···
  *  - Disable interrupts
  *  - Clean and turn off caches.
  */
-ENTRY(cpu_sa1100_proc_fin)
+SYM_TYPED_FUNC_START(cpu_sa1100_proc_fin)
 	mcr	p15, 0, ip, c15, c2, 2		@ Disable clock switching
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_sa1100_proc_fin)
 
 /*
  * cpu_sa1100_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_sa1100_reset)
+SYM_TYPED_FUNC_START(cpu_sa1100_reset)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
···
 	bic	ip, ip, #0x1100			@ ...i...s........
 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
 	ret	r0
-ENDPROC(cpu_sa1100_reset)
+SYM_FUNC_END(cpu_sa1100_reset)
 	.popsection
 
 /*
···
  *   3 = switch to fast processor clock
  */
 	.align	5
-ENTRY(cpu_sa1100_do_idle)
+SYM_TYPED_FUNC_START(cpu_sa1100_do_idle)
 	mov	r0, r0				@ 4 nop padding
 	mov	r0, r0
 	mov	r0, r0
···
 	mov	r0, r0				@ safety
 	mcr	p15, 0, r0, c15, c1, 2		@ enable clock switching
 	ret	lr
+SYM_FUNC_END(cpu_sa1100_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  * addr: cache-unaligned virtual address
  */
 	.align	5
-ENTRY(cpu_sa1100_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_sa1100_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #DCACHELINESIZE
 	subs	r1, r1, #DCACHELINESIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_sa1100_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_sa1100_switch_mm)
+SYM_TYPED_FUNC_START(cpu_sa1100_switch_mm)
 #ifdef CONFIG_MMU
 	str	lr, [sp, #-4]!
 	bl	v4wb_flush_kern_cache_all	@ clears IP
···
 #else
 	ret	lr
 #endif
+SYM_FUNC_END(cpu_sa1100_switch_mm)
 
 /*
  * cpu_sa1100_set_pte_ext(ptep, pte, ext)
···
  * Set a PTE and flush it out
  */
 	.align	5
-ENTRY(cpu_sa1100_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_sa1100_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv3_set_pte_ext wc_disable=0
 	mov	r0, r0
···
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_sa1100_set_pte_ext)
 
 .globl	cpu_sa1100_suspend_size
 .equ	cpu_sa1100_suspend_size, 4 * 3
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_sa1100_do_suspend)
+SYM_TYPED_FUNC_START(cpu_sa1100_do_suspend)
 	stmfd	sp!, {r4 - r6, lr}
 	mrc	p15, 0, r4, c3, c0, 0		@ domain ID
 	mrc	p15, 0, r5, c13, c0, 0		@ PID
 	mrc	p15, 0, r6, c1, c0, 0		@ control reg
 	stmia	r0, {r4 - r6}			@ store cp regs
 	ldmfd	sp!, {r4 - r6, pc}
-ENDPROC(cpu_sa1100_do_suspend)
+SYM_FUNC_END(cpu_sa1100_do_suspend)
 
-ENTRY(cpu_sa1100_do_resume)
+SYM_TYPED_FUNC_START(cpu_sa1100_do_resume)
 	ldmia	r0, {r4 - r6}			@ load cp regs
 	mov	ip, #0
 	mcr	p15, 0, ip, c8, c7, 0		@ flush I+D TLBs
···
 	mcr	p15, 0, r5, c13, c0, 0		@ PID
 	mov	r0, r6				@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_sa1100_do_resume)
+SYM_FUNC_END(cpu_sa1100_do_resume)
 #endif
 
 	.type	__sa1100_setup, #function

arch/arm/mm/proc-v6.S

···
  *  This is the "shell" of the ARMv6 processor support.
  */
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/linkage.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
···
 
 .arch armv6
 
-ENTRY(cpu_v6_proc_init)
+SYM_TYPED_FUNC_START(cpu_v6_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_v6_proc_init)
 
-ENTRY(cpu_v6_proc_fin)
+SYM_TYPED_FUNC_START(cpu_v6_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x0006			@ .............ca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_v6_proc_fin)
 
 /*
  *	cpu_v6_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_v6_reset)
+SYM_TYPED_FUNC_START(cpu_v6_reset)
 	mrc	p15, 0, r1, c1, c0, 0		@ ctrl register
 	bic	r1, r1, #0x1			@ ...............m
 	mcr	p15, 0, r1, c1, c0, 0		@ disable MMU
 	mov	r1, #0
 	mcr	p15, 0, r1, c7, c5, 4		@ ISB
 	ret	r0
-ENDPROC(cpu_v6_reset)
+SYM_FUNC_END(cpu_v6_reset)
 	.popsection
 
 /*
···
  *
  *	IRQs are already disabled.
  */
-ENTRY(cpu_v6_do_idle)
+SYM_TYPED_FUNC_START(cpu_v6_do_idle)
 	mov	r1, #0
 	mcr	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
 	mcr	p15, 0, r1, c7, c0, 4		@ wait for interrupt
 	ret	lr
+SYM_FUNC_END(cpu_v6_do_idle)
 
-ENTRY(cpu_v6_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_v6_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #D_CACHE_LINE_SIZE
 	subs	r1, r1, #D_CACHE_LINE_SIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_v6_dcache_clean_area)
 
 /*
  *	cpu_v6_switch_mm(pgd_phys, tsk)
···
  *	It is assumed that:
  *	- we are not using split page tables
  */
-ENTRY(cpu_v6_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v6_switch_mm)
 #ifdef CONFIG_MMU
 	mov	r2, #0
 	mmid	r1, r1				@ get mm->context.id
···
 	mcr	p15, 0, r1, c13, c0, 1		@ set context ID
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_v6_switch_mm)
 
 /*
  *	cpu_v6_set_pte_ext(ptep, pte, ext)
···
  */
 	armv6_mt_table cpu_v6
 
-ENTRY(cpu_v6_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_v6_set_pte_ext)
 #ifdef CONFIG_MMU
 	armv6_set_pte_ext cpu_v6
 #endif
 	ret	lr
+SYM_FUNC_END(cpu_v6_set_pte_ext)
 
 /* Suspend/resume support: taken from arch/arm/mach-s3c64xx/sleep.S */
 .globl	cpu_v6_suspend_size
 .equ	cpu_v6_suspend_size, 4 * 6
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_v6_do_suspend)
+SYM_TYPED_FUNC_START(cpu_v6_do_suspend)
 	stmfd	sp!, {r4 - r9, lr}
 	mrc	p15, 0, r4, c13, c0, 0	@ FCSE/PID
 #ifdef CONFIG_MMU
···
 	mrc	p15, 0, r9, c1, c0, 0	@ control register
 	stmia	r0, {r4 - r9}
 	ldmfd	sp!, {r4- r9, pc}
-ENDPROC(cpu_v6_do_suspend)
+SYM_FUNC_END(cpu_v6_do_suspend)
 
-ENTRY(cpu_v6_do_resume)
+SYM_TYPED_FUNC_START(cpu_v6_do_resume)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c14, 0	@ clean+invalidate D cache
 	mcr	p15, 0, ip, c7, c5, 0	@ invalidate I cache
···
 	mcr	p15, 0, ip, c7, c5, 4	@ ISB
 	mov	r0, r9			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_v6_do_resume)
+SYM_FUNC_END(cpu_v6_do_resume)
 #endif
 
 	string	cpu_v6_name, "ARMv6-compatible processor"

arch/arm/mm/proc-v7-2level.S

···
  *	even on Cortex-A8 revisions not affected by 430973.
  *	If IBE is not set, the flush BTAC/BTB won't do anything.
  */
-ENTRY(cpu_v7_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7_switch_mm)
 #ifdef CONFIG_MMU
 	mmid	r1, r1				@ get mm->context.id
 	ALT_SMP(orr	r0, r0, #TTB_FLAGS_SMP)
···
 	isb
 #endif
 	bx	lr
-ENDPROC(cpu_v7_switch_mm)
+SYM_FUNC_END(cpu_v7_switch_mm)
 
 /*
  *	cpu_v7_set_pte_ext(ptep, pte)
···
  *	- pte   - PTE value to store
  *	- ext	- value for extended PTE bits
  */
-ENTRY(cpu_v7_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_v7_set_pte_ext)
 #ifdef CONFIG_MMU
 	str	r1, [r0]			@ linux version
 
···
 	ALT_UP (mcr	p15, 0, r0, c7, c10, 1)		@ flush_pte
 #endif
 	bx	lr
-ENDPROC(cpu_v7_set_pte_ext)
+SYM_FUNC_END(cpu_v7_set_pte_ext)
 
 	/*
 	 * Memory region attributes with SCTLR.TRE=1

arch/arm/mm/proc-v7-3level.S

···
  * Set the translation table base pointer to be pgd_phys (physical address of
  * the new TTB).
  */
-ENTRY(cpu_v7_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7_switch_mm)
 #ifdef CONFIG_MMU
 	mmid	r2, r2
 	asid	r2, r2
···
 	isb
 #endif
 	ret	lr
-ENDPROC(cpu_v7_switch_mm)
+SYM_FUNC_END(cpu_v7_switch_mm)
 
 #ifdef __ARMEB__
 #define rl r3
···
  * - ptep - pointer to level 3 translation table entry
  * - pte - PTE value to store (64-bit in r2 and r3)
  */
-ENTRY(cpu_v7_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_v7_set_pte_ext)
 #ifdef CONFIG_MMU
 	tst	rl, #L_PTE_VALID
 	beq	1f
···
 	ALT_UP (mcr	p15, 0, r0, c7, c10, 1)		@ flush_pte
 #endif
 	ret	lr
-ENDPROC(cpu_v7_set_pte_ext)
+SYM_FUNC_END(cpu_v7_set_pte_ext)
 
 	/*
 	 * Memory region attributes for LPAE (defined in pgtable-3level.h):

arch/arm/mm/proc-v7.S

···
  *  This is the "shell" of the ARMv7 processor support.
  */
 #include <linux/arm-smccc.h>
+#include <linux/cfi_types.h>
 #include <linux/init.h>
 #include <linux/linkage.h>
 #include <linux/pgtable.h>
···
 
 .arch armv7-a
 
-ENTRY(cpu_v7_proc_init)
+SYM_TYPED_FUNC_START(cpu_v7_proc_init)
 	ret	lr
-ENDPROC(cpu_v7_proc_init)
+SYM_FUNC_END(cpu_v7_proc_init)
 
-ENTRY(cpu_v7_proc_fin)
+SYM_TYPED_FUNC_START(cpu_v7_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x0006			@ .............ca.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
-ENDPROC(cpu_v7_proc_fin)
+SYM_FUNC_END(cpu_v7_proc_fin)
 
 /*
  *	cpu_v7_reset(loc, hyp)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_v7_reset)
+SYM_TYPED_FUNC_START(cpu_v7_reset)
 	mrc	p15, 0, r2, c1, c0, 0		@ ctrl register
 	bic	r2, r2, #0x1			@ ...............m
  THUMB(	bic	r2, r2, #1 << 30 )		@ SCTLR.TE (Thumb exceptions)
···
 	bne	__hyp_soft_restart
 #endif
 	bx	r0
-ENDPROC(cpu_v7_reset)
+SYM_FUNC_END(cpu_v7_reset)
 	.popsection
 
 /*
···
  *
  *	IRQs are already disabled.
  */
-ENTRY(cpu_v7_do_idle)
+SYM_TYPED_FUNC_START(cpu_v7_do_idle)
 	dsb					@ WFI may enter a low-power mode
 	wfi
 	ret	lr
-ENDPROC(cpu_v7_do_idle)
+SYM_FUNC_END(cpu_v7_do_idle)
 
-ENTRY(cpu_v7_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_v7_dcache_clean_area)
 	ALT_SMP(W(nop))			@ MP extensions imply L1 PTW
 	ALT_UP_B(1f)
 	ret	lr
···
 	bhi	2b
 	dsb	ishst
 	ret	lr
-ENDPROC(cpu_v7_dcache_clean_area)
+SYM_FUNC_END(cpu_v7_dcache_clean_area)
 
 #ifdef CONFIG_ARM_PSCI
 	.arch_extension sec
-ENTRY(cpu_v7_smc_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7_smc_switch_mm)
 	stmfd	sp!, {r0 - r3}
 	movw	r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1
 	movt	r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1
 	smc	#0
 	ldmfd	sp!, {r0 - r3}
 	b	cpu_v7_switch_mm
-ENDPROC(cpu_v7_smc_switch_mm)
+SYM_FUNC_END(cpu_v7_smc_switch_mm)
 	.arch_extension virt
-ENTRY(cpu_v7_hvc_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7_hvc_switch_mm)
 	stmfd	sp!, {r0 - r3}
 	movw	r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1
 	movt	r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1
 	hvc	#0
 	ldmfd	sp!, {r0 - r3}
 	b	cpu_v7_switch_mm
-ENDPROC(cpu_v7_hvc_switch_mm)
+SYM_FUNC_END(cpu_v7_hvc_switch_mm)
 #endif
-ENTRY(cpu_v7_iciallu_switch_mm)
+
+SYM_TYPED_FUNC_START(cpu_v7_iciallu_switch_mm)
 	mov	r3, #0
 	mcr	p15, 0, r3, c7, c5, 0		@ ICIALLU
 	b	cpu_v7_switch_mm
-ENDPROC(cpu_v7_iciallu_switch_mm)
-ENTRY(cpu_v7_bpiall_switch_mm)
+SYM_FUNC_END(cpu_v7_iciallu_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7_bpiall_switch_mm)
 	mov	r3, #0
 	mcr	p15, 0, r3, c7, c5, 6		@ flush BTAC/BTB
 	b	cpu_v7_switch_mm
-ENDPROC(cpu_v7_bpiall_switch_mm)
+SYM_FUNC_END(cpu_v7_bpiall_switch_mm)
 
 	string	cpu_v7_name, "ARMv7 Processor"
 	.align
···
 .globl	cpu_v7_suspend_size
 .equ	cpu_v7_suspend_size, 4 * 9
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_v7_do_suspend)
+SYM_TYPED_FUNC_START(cpu_v7_do_suspend)
 	stmfd	sp!, {r4 - r11, lr}
 	mrc	p15, 0, r4, c13, c0, 0	@ FCSE/PID
 	mrc	p15, 0, r5, c13, c0, 3	@ User r/o thread ID
···
 	mrc	p15, 0, r10, c1, c0, 2	@ Co-processor access control
 	stmia	r0, {r5 - r11}
 	ldmfd	sp!, {r4 - r11, pc}
-ENDPROC(cpu_v7_do_suspend)
+SYM_FUNC_END(cpu_v7_do_suspend)
 
-ENTRY(cpu_v7_do_resume)
+SYM_TYPED_FUNC_START(cpu_v7_do_resume)
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c5, 0	@ invalidate I cache
 	mcr	p15, 0, ip, c13, c0, 1	@ set reserved context ID
···
 	dsb
 	mov	r0, r8			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_v7_do_resume)
+SYM_FUNC_END(cpu_v7_do_resume)
 #endif
 
 .globl	cpu_ca9mp_suspend_size
 .equ	cpu_ca9mp_suspend_size, cpu_v7_suspend_size + 4 * 2
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_ca9mp_do_suspend)
+SYM_TYPED_FUNC_START(cpu_ca9mp_do_suspend)
 	stmfd	sp!, {r4 - r5}
 	mrc	p15, 0, r4, c15, c0, 1		@ Diagnostic register
 	mrc	p15, 0, r5, c15, c0, 0		@ Power register
 	stmia	r0!, {r4 - r5}
 	ldmfd	sp!, {r4 - r5}
 	b	cpu_v7_do_suspend
-ENDPROC(cpu_ca9mp_do_suspend)
+SYM_FUNC_END(cpu_ca9mp_do_suspend)
 
-ENTRY(cpu_ca9mp_do_resume)
+SYM_TYPED_FUNC_START(cpu_ca9mp_do_resume)
 	ldmia	r0!, {r4 - r5}
 	mrc	p15, 0, r10, c15, c0, 1		@ Read Diagnostic register
 	teq	r4, r10				@ Already restored?
···
 	teq	r5, r10				@ Already restored?
 	mcrne	p15, 0, r5, c15, c0, 0		@ No, so restore it
 	b	cpu_v7_do_resume
-ENDPROC(cpu_ca9mp_do_resume)
+SYM_FUNC_END(cpu_ca9mp_do_resume)
 #endif
 
 #ifdef CONFIG_CPU_PJ4B
···
 	globl_equ	cpu_pj4b_proc_fin, 	cpu_v7_proc_fin
 	globl_equ	cpu_pj4b_reset,	   	cpu_v7_reset
 #ifdef CONFIG_PJ4B_ERRATA_4742
-ENTRY(cpu_pj4b_do_idle)
+SYM_TYPED_FUNC_START(cpu_pj4b_do_idle)
 	dsb					@ WFI may enter a low-power mode
 	wfi
 	dsb					@barrier
 	ret	lr
-ENDPROC(cpu_pj4b_do_idle)
+SYM_FUNC_END(cpu_pj4b_do_idle)
 #else
 	globl_equ	cpu_pj4b_do_idle,  	cpu_v7_do_idle
 #endif
 	globl_equ	cpu_pj4b_dcache_clean_area,	cpu_v7_dcache_clean_area
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_pj4b_do_suspend)
+SYM_TYPED_FUNC_START(cpu_pj4b_do_suspend)
 	stmfd	sp!, {r6 - r10}
 	mrc	p15, 1, r6, c15, c1, 0  @ save CP15 - extra features
 	mrc	p15, 1, r7, c15, c2, 0	@ save CP15 - Aux Func Modes Ctrl 0
···
 	stmia	r0!, {r6 - r10}
 	ldmfd	sp!, {r6 - r10}
 	b cpu_v7_do_suspend
-ENDPROC(cpu_pj4b_do_suspend)
+SYM_FUNC_END(cpu_pj4b_do_suspend)
 
-ENTRY(cpu_pj4b_do_resume)
+SYM_TYPED_FUNC_START(cpu_pj4b_do_resume)
 	ldmia	r0!, {r6 - r10}
 	mcr	p15, 1, r6, c15, c1, 0  @ restore CP15 - extra features
 	mcr	p15, 1, r7, c15, c2, 0	@ restore CP15 - Aux Func Modes Ctrl 0
···
 	mcr	p15, 1, r9, c15, c1, 1  @ restore CP15 - Aux Debug Modes Ctrl 1
 	mcr	p15, 0, r10, c9, c14, 0  @ restore CP15 - PMC
 	b cpu_v7_do_resume
-ENDPROC(cpu_pj4b_do_resume)
+SYM_FUNC_END(cpu_pj4b_do_resume)
 #endif
 .globl	cpu_pj4b_suspend_size
 .equ	cpu_pj4b_suspend_size, cpu_v7_suspend_size + 4 * 5

arch/arm/mm/proc-v7m.S

···
  *  This is the "shell" of the ARMv7-M processor support.
  */
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
 #include <asm/v7m.h>
 #include "proc-macros.S"
 
-ENTRY(cpu_v7m_proc_init)
+SYM_TYPED_FUNC_START(cpu_v7m_proc_init)
 	ret	lr
-ENDPROC(cpu_v7m_proc_init)
+SYM_FUNC_END(cpu_v7m_proc_init)
 
-ENTRY(cpu_v7m_proc_fin)
+SYM_TYPED_FUNC_START(cpu_v7m_proc_fin)
 	ret	lr
-ENDPROC(cpu_v7m_proc_fin)
+SYM_FUNC_END(cpu_v7m_proc_fin)
 
 /*
  *	cpu_v7m_reset(loc)
···
  *	- loc   - location to jump to for soft reset
  */
 	.align	5
-ENTRY(cpu_v7m_reset)
+SYM_TYPED_FUNC_START(cpu_v7m_reset)
 	ret	r0
-ENDPROC(cpu_v7m_reset)
+SYM_FUNC_END(cpu_v7m_reset)
 
 /*
  *	cpu_v7m_do_idle()
···
  *
  *	IRQs are already disabled.
  */
-ENTRY(cpu_v7m_do_idle)
+SYM_TYPED_FUNC_START(cpu_v7m_do_idle)
 	wfi
 	ret	lr
-ENDPROC(cpu_v7m_do_idle)
+SYM_FUNC_END(cpu_v7m_do_idle)
 
-ENTRY(cpu_v7m_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_v7m_dcache_clean_area)
 	ret	lr
-ENDPROC(cpu_v7m_dcache_clean_area)
+SYM_FUNC_END(cpu_v7m_dcache_clean_area)
 
 /*
  * There is no MMU, so here is nothing to do.
  */
-ENTRY(cpu_v7m_switch_mm)
+SYM_TYPED_FUNC_START(cpu_v7m_switch_mm)
 	ret	lr
-ENDPROC(cpu_v7m_switch_mm)
+SYM_FUNC_END(cpu_v7m_switch_mm)
 
 .globl	cpu_v7m_suspend_size
 .equ	cpu_v7m_suspend_size, 0
 
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_v7m_do_suspend)
+SYM_TYPED_FUNC_START(cpu_v7m_do_suspend)
 	ret	lr
-ENDPROC(cpu_v7m_do_suspend)
+SYM_FUNC_END(cpu_v7m_do_suspend)
 
-ENTRY(cpu_v7m_do_resume)
+SYM_TYPED_FUNC_START(cpu_v7m_do_resume)
 	ret	lr
-ENDPROC(cpu_v7m_do_resume)
+SYM_FUNC_END(cpu_v7m_do_resume)
 #endif
 
-ENTRY(cpu_cm7_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_cm7_dcache_clean_area)
 	dcache_line_size r2, r3
 	movw	r3, #:lower16:BASEADDR_V7M_SCB + V7M_SCB_DCCMVAC
 	movt	r3, #:upper16:BASEADDR_V7M_SCB + V7M_SCB_DCCMVAC
···
 	bhi	1b
 	dsb
 	ret	lr
-ENDPROC(cpu_cm7_dcache_clean_area)
+SYM_FUNC_END(cpu_cm7_dcache_clean_area)
 
-ENTRY(cpu_cm7_proc_fin)
+SYM_TYPED_FUNC_START(cpu_cm7_proc_fin)
 	movw	r2, #:lower16:(BASEADDR_V7M_SCB + V7M_SCB_CCR)
 	movt	r2, #:upper16:(BASEADDR_V7M_SCB + V7M_SCB_CCR)
 	ldr	r0, [r2]
 	bic	r0, r0, #(V7M_SCB_CCR_DC | V7M_SCB_CCR_IC)
 	str	r0, [r2]
 	ret	lr
-ENDPROC(cpu_cm7_proc_fin)
+SYM_FUNC_END(cpu_cm7_proc_fin)
 
 	.section ".init.text", "ax"
 

arch/arm/mm/proc-xsc3.S

···
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
  *
  * Nothing too exciting at the moment
  */
-ENTRY(cpu_xsc3_proc_init)
+SYM_TYPED_FUNC_START(cpu_xsc3_proc_init)
 	ret	lr
+SYM_FUNC_END(cpu_xsc3_proc_init)
 
 /*
  * cpu_xsc3_proc_fin()
  */
-ENTRY(cpu_xsc3_proc_fin)
+SYM_TYPED_FUNC_START(cpu_xsc3_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1800			@ ...IZ...........
 	bic	r0, r0, #0x0006			@ .............CA.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_xsc3_proc_fin)
 
 /*
  * cpu_xsc3_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_xsc3_reset)
+SYM_TYPED_FUNC_START(cpu_xsc3_reset)
 	mov	r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
 	msr	cpsr_c, r1			@ reset CPSR
 	mrc	p15, 0, r1, c1, c0, 0		@ ctrl register
···
 	@ already containing those two last instructions to survive.
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I and D TLBs
 	ret	r0
-ENDPROC(cpu_xsc3_reset)
+SYM_FUNC_END(cpu_xsc3_reset)
 	.popsection
 
 /*
···
  */
 	.align	5
 
-ENTRY(cpu_xsc3_do_idle)
+SYM_TYPED_FUNC_START(cpu_xsc3_do_idle)
 	mov	r0, #1
 	mcr	p14, 0, r0, c7, c0, 0		@ go to idle
 	ret	lr
+SYM_FUNC_END(cpu_xsc3_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(xsc3_flush_icache_all)
+SYM_TYPED_FUNC_START(xsc3_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(xsc3_flush_icache_all)
+SYM_FUNC_END(xsc3_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(xsc3_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(xsc3_flush_user_cache_all, xsc3_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(xsc3_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(xsc3_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c10, 4		@ data write barrier
 	mcrne	p15, 0, ip, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(xsc3_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, vm_flags)
···
  *	- vma	- vma_area_struct describing address space
  */
 	.align	5
-ENTRY(xsc3_flush_user_cache_range)
+SYM_TYPED_FUNC_START(xsc3_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #MAX_AREA_SIZE
···
 	mcrne	p15, 0, ip, c7, c10, 4		@ data write barrier
 	mcrne	p15, 0, ip, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(xsc3_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	Note: single I-cache line invalidation isn't used here since
  *	it also trashes the mini I-cache used by JTAG debuggers.
  */
-ENTRY(xsc3_coherent_kern_range)
-/* FALLTHROUGH */
-ENTRY(xsc3_coherent_user_range)
+SYM_TYPED_FUNC_START(xsc3_coherent_kern_range)
+#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */
+	b	xsc3_coherent_user_range
+#endif
+SYM_FUNC_END(xsc3_coherent_kern_range)
+
+SYM_TYPED_FUNC_START(xsc3_coherent_user_range)
 	bic	r0, r0, #CACHELINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean L1 D line
 	add	r0, r0, #CACHELINESIZE
···
 	mcr	p15, 0, r0, c7, c10, 4		@ data write barrier
 	mcr	p15, 0, r0, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(xsc3_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(xsc3_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(xsc3_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean/invalidate L1 D line
 	add	r0, r0, #CACHELINESIZE
···
 	mcr	p15, 0, r0, c7, c10, 4		@ data write barrier
 	mcr	p15, 0, r0, c7, c5, 4		@ prefetch flush
 	ret	lr
+SYM_FUNC_END(xsc3_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(xsc3_dma_flush_range)
+SYM_TYPED_FUNC_START(xsc3_dma_flush_range)
 	bic	r0, r0, #CACHELINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean/invalidate L1 D line
 	add	r0, r0, #CACHELINESIZE
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ data write barrier
 	ret	lr
+SYM_FUNC_END(xsc3_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(xsc3_dma_map_area)
+SYM_TYPED_FUNC_START(xsc3_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	xsc3_dma_clean_range
 	bcs	xsc3_dma_inv_range
 	b	xsc3_dma_flush_range
-ENDPROC(xsc3_dma_map_area)
+SYM_FUNC_END(xsc3_dma_map_area)
 
 /*
  *	dma_unmap_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(xsc3_dma_unmap_area)
+SYM_TYPED_FUNC_START(xsc3_dma_unmap_area)
 	ret	lr
-ENDPROC(xsc3_dma_unmap_area)
+SYM_FUNC_END(xsc3_dma_unmap_area)
 
-	.globl	xsc3_flush_kern_cache_louis
-	.equ	xsc3_flush_kern_cache_louis, xsc3_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions xsc3
-
-ENTRY(cpu_xsc3_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_xsc3_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean L1 D line
 	add	r0, r0, #CACHELINESIZE
 	subs	r1, r1, #CACHELINESIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_xsc3_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_xsc3_switch_mm)
+SYM_TYPED_FUNC_START(cpu_xsc3_switch_mm)
 	clean_d_cache r1, r2
 	mcr	p15, 0, ip, c7, c5, 0		@ invalidate L1 I cache and BTB
 	mcr	p15, 0, ip, c7, c10, 4		@ data write barrier
···
 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I and D TLBs
 	cpwait_ret lr, ip
+SYM_FUNC_END(cpu_xsc3_switch_mm)
 
 /*
  * cpu_xsc3_set_pte_ext(ptep, pte, ext)
···
 	.long	0x00						@ unused
 
 	.align	5
-ENTRY(cpu_xsc3_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_xsc3_set_pte_ext)
 	xscale_set_pte_ext_prologue
 
 	tst	r1, #L_PTE_SHARED		@ shared?
···
 
 	xscale_set_pte_ext_epilogue
 	ret	lr
+SYM_FUNC_END(cpu_xsc3_set_pte_ext)
 
 	.ltorg
 	.align
···
 .globl	cpu_xsc3_suspend_size
 .equ	cpu_xsc3_suspend_size, 4 * 6
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_xsc3_do_suspend)
+SYM_TYPED_FUNC_START(cpu_xsc3_do_suspend)
 	stmfd	sp!, {r4 - r9, lr}
 	mrc	p14, 0, r4, c6, c0, 0	@ clock configuration, for turbo mode
 	mrc	p15, 0, r5, c15, c1, 0	@ CP access reg
···
 	bic	r4, r4, #2		@ clear frequency change bit
 	stmia	r0, {r4 - r9}		@ store cp regs
 	ldmia	sp!, {r4 - r9, pc}
-ENDPROC(cpu_xsc3_do_suspend)
+SYM_FUNC_END(cpu_xsc3_do_suspend)
 
-ENTRY(cpu_xsc3_do_resume)
+SYM_TYPED_FUNC_START(cpu_xsc3_do_resume)
 	ldmia	r0, {r4 - r9}		@ load cp regs
 	mov	ip, #0
 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I & D caches, BTB
···
 	mcr	p15, 0, r8, c1, c0, 1	@ auxiliary control reg
 	mov	r0, r9			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_xsc3_do_resume)
+SYM_FUNC_END(cpu_xsc3_do_resume)
 #endif
 
 	.type	__xsc3_setup, #function

arch/arm/mm/proc-xscale.S

···
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <linux/pgtable.h>
 #include <asm/assembler.h>
 #include <asm/hwcap.h>
···
  *
  * Nothing too exciting at the moment
  */
-ENTRY(cpu_xscale_proc_init)
+SYM_TYPED_FUNC_START(cpu_xscale_proc_init)
 	@ enable write buffer coalescing. Some bootloader disable it
 	mrc	p15, 0, r1, c1, c0, 1
 	bic	r1, r1, #1
 	mcr	p15, 0, r1, c1, c0, 1
 	ret	lr
+SYM_FUNC_END(cpu_xscale_proc_init)
 
 /*
  * cpu_xscale_proc_fin()
  */
-ENTRY(cpu_xscale_proc_fin)
+SYM_TYPED_FUNC_START(cpu_xscale_proc_fin)
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1800			@ ...IZ...........
 	bic	r0, r0, #0x0006			@ .............CA.
 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
 	ret	lr
+SYM_FUNC_END(cpu_xscale_proc_fin)
 
 /*
  * cpu_xscale_reset(loc)
···
  */
 	.align	5
 	.pushsection	.idmap.text, "ax"
-ENTRY(cpu_xscale_reset)
+SYM_TYPED_FUNC_START(cpu_xscale_reset)
 	mov	r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
 	msr	cpsr_c, r1			@ reset CPSR
 	mcr	p15, 0, r1, c10, c4, 1		@ unlock I-TLB
···
 	@ already containing those two last instructions to survive.
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 	ret	r0
-ENDPROC(cpu_xscale_reset)
+SYM_FUNC_END(cpu_xscale_reset)
 	.popsection
 
 /*
···
  */
 	.align	5
 
-ENTRY(cpu_xscale_do_idle)
+SYM_TYPED_FUNC_START(cpu_xscale_do_idle)
 	mov	r0, #1
 	mcr	p14, 0, r0, c7, c0, 0		@ Go to IDLE
 	ret	lr
+SYM_FUNC_END(cpu_xscale_do_idle)
 
 /* ================================= CACHE ================================ */
 
···
  *
  *	Unconditionally clean and invalidate the entire icache.
  */
-ENTRY(xscale_flush_icache_all)
+SYM_TYPED_FUNC_START(xscale_flush_icache_all)
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
 	ret	lr
-ENDPROC(xscale_flush_icache_all)
+SYM_FUNC_END(xscale_flush_icache_all)
 
 /*
  *	flush_user_cache_all()
···
  *	Invalidate all cache entries in a particular address
  *	space.
  */
-ENTRY(xscale_flush_user_cache_all)
-	/* FALLTHROUGH */
+SYM_FUNC_ALIAS(xscale_flush_user_cache_all, xscale_flush_kern_cache_all)
 
 /*
  *	flush_kern_cache_all()
  *
  *	Clean and invalidate the entire cache.
  */
-ENTRY(xscale_flush_kern_cache_all)
+SYM_TYPED_FUNC_START(xscale_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
 	mov	ip, #0
 __flush_whole_cache:
···
 	mcrne	p15, 0, ip, c7, c5, 0		@ Invalidate I cache & BTB
 	mcrne	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_flush_kern_cache_all)
 
 /*
  *	flush_user_cache_range(start, end, vm_flags)
···
  *	- vma	- vma_area_struct describing address space
  */
 	.align	5
-ENTRY(xscale_flush_user_cache_range)
+SYM_TYPED_FUNC_START(xscale_flush_user_cache_range)
 	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #MAX_AREA_SIZE
···
 	mcrne	p15, 0, ip, c7, c5, 6		@ Invalidate BTB
 	mcrne	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_flush_user_cache_range)
 
 /*
  *	coherent_kern_range(start, end)
···
  *	Note: single I-cache line invalidation isn't used here since
  *	it also trashes the mini I-cache used by JTAG debuggers.
  */
-ENTRY(xscale_coherent_kern_range)
+SYM_TYPED_FUNC_START(xscale_coherent_kern_range)
 	bic	r0, r0, #CACHELINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHELINESIZE
···
 	mcr	p15, 0, r0, c7, c5, 0		@ Invalidate I cache & BTB
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_coherent_kern_range)
 
 /*
  *	coherent_user_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(xscale_coherent_user_range)
+SYM_TYPED_FUNC_START(xscale_coherent_user_range)
 	bic	r0, r0, #CACHELINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c5, 1		@ Invalidate I cache entry
···
 	mcr	p15, 0, r0, c7, c5, 6		@ Invalidate BTB
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_coherent_user_range)
 
 /*
  *	flush_kern_dcache_area(void *addr, size_t size)
···
  *	- addr	- kernel address
  *	- size	- region size
  */
-ENTRY(xscale_flush_kern_dcache_area)
+SYM_TYPED_FUNC_START(xscale_flush_kern_dcache_area)
 	add	r1, r0, r1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
···
 	mcr	p15, 0, r0, c7, c5, 0		@ Invalidate I cache & BTB
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_flush_kern_dcache_area)
 
 /*
  *	dma_inv_range(start, end)
···
  *	- start  - virtual start address
  *	- end	 - virtual end address
  */
-ENTRY(xscale_dma_flush_range)
+SYM_TYPED_FUNC_START(xscale_dma_flush_range)
 	bic	r0, r0, #CACHELINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
···
 	blo	1b
 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	ret	lr
+SYM_FUNC_END(xscale_dma_flush_range)
 
 /*
  *	dma_map_area(start, size, dir)
···
  *	- size	- size of region
  *	- dir	- DMA direction
  */
-ENTRY(xscale_dma_map_area)
+SYM_TYPED_FUNC_START(xscale_dma_map_area)
 	add	r1, r1, r0
 	cmp	r2, #DMA_TO_DEVICE
 	beq	xscale_dma_clean_range
 	bcs	xscale_dma_inv_range
 	b	xscale_dma_flush_range
-ENDPROC(xscale_dma_map_area)
-
-/*
- *	dma_map_area(start, size, dir)
- *	- start	- kernel virtual start address
- *	- size	- size of region
- *	- dir	- DMA direction
- */
-ENTRY(xscale_80200_A0_A1_dma_map_area)
-	add	r1, r1, r0
-	teq	r2, #DMA_TO_DEVICE
-	beq	xscale_dma_clean_range
-	b	xscale_dma_flush_range
-ENDPROC(xscale_80200_A0_A1_dma_map_area)
-
-/*
- *	dma_unmap_area(start, size, dir)
- *	- start	- kernel virtual start address
- *	- size	- size of region
- *	- dir	- DMA direction
- */
-ENTRY(xscale_dma_unmap_area)
-	ret	lr
-ENDPROC(xscale_dma_unmap_area)
-
-	.globl	xscale_flush_kern_cache_louis
-	.equ	xscale_flush_kern_cache_louis, xscale_flush_kern_cache_all
-
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions xscale
+SYM_FUNC_END(xscale_dma_map_area)
 
 /*
  * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't
···
  * revision January 22, 2003, available at:
  *     http://www.intel.com/design/iio/specupdt/273415.htm
  */
-.macro a0_alias basename
-	.globl xscale_80200_A0_A1_\basename
-	.type xscale_80200_A0_A1_\basename , %function
-	.equ xscale_80200_A0_A1_\basename , xscale_\basename
-.endm
 
 /*
- * Most of the cache functions are unchanged for these processor revisions.
- * Export suitable alias symbols for the unchanged functions:
+ *	dma_map_area(start, size, dir)
+ *	- start	- kernel virtual start address
+ *	- size	- size of region
+ *	- dir	- DMA direction
  */
-	a0_alias flush_icache_all
-	a0_alias flush_user_cache_all
-	a0_alias flush_kern_cache_all
-	a0_alias flush_kern_cache_louis
-	a0_alias flush_user_cache_range
-	a0_alias coherent_kern_range
-	a0_alias coherent_user_range
-	a0_alias flush_kern_dcache_area
-	a0_alias dma_flush_range
-	a0_alias dma_unmap_area
+SYM_TYPED_FUNC_START(xscale_80200_A0_A1_dma_map_area)
+	add	r1, r1, r0
+	teq	r2, #DMA_TO_DEVICE
+	beq	xscale_dma_clean_range
+	b	xscale_dma_flush_range
+SYM_FUNC_END(xscale_80200_A0_A1_dma_map_area)
 
-	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
-	define_cache_functions xscale_80200_A0_A1
+/*
+ *	dma_unmap_area(start, size, dir)
+ *	- start	- kernel virtual start address
+ *	- size	- size of region
+ *	- dir	- DMA direction
+ */
+SYM_TYPED_FUNC_START(xscale_dma_unmap_area)
+	ret	lr
+SYM_FUNC_END(xscale_dma_unmap_area)
 
-ENTRY(cpu_xscale_dcache_clean_area)
+SYM_TYPED_FUNC_START(cpu_xscale_dcache_clean_area)
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHELINESIZE
 	subs	r1, r1, #CACHELINESIZE
 	bhi	1b
 	ret	lr
+SYM_FUNC_END(cpu_xscale_dcache_clean_area)
 
 /* =============================== PageTable ============================== */
 
···
  * pgd: new page tables
  */
 	.align	5
-ENTRY(cpu_xscale_switch_mm)
+SYM_TYPED_FUNC_START(cpu_xscale_switch_mm)
 	clean_d_cache r1, r2
 	mcr	p15, 0, ip, c7, c5, 0		@ Invalidate I cache & BTB
 	mcr	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer
 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
 	cpwait_ret lr, ip
+SYM_FUNC_END(cpu_xscale_switch_mm)
 
 /*
  * cpu_xscale_set_pte_ext(ptep, pte, ext)
···
 	.long	0x00						@ unused
 
 	.align	5
-ENTRY(cpu_xscale_set_pte_ext)
+SYM_TYPED_FUNC_START(cpu_xscale_set_pte_ext)
 	xscale_set_pte_ext_prologue
 
 	@
···
 
 	xscale_set_pte_ext_epilogue
 	ret	lr
+SYM_FUNC_END(cpu_xscale_set_pte_ext)
 
 	.ltorg
 	.align
···
 .globl	cpu_xscale_suspend_size
 .equ	cpu_xscale_suspend_size, 4 * 6
 #ifdef CONFIG_ARM_CPU_SUSPEND
-ENTRY(cpu_xscale_do_suspend)
+SYM_TYPED_FUNC_START(cpu_xscale_do_suspend)
 	stmfd	sp!, {r4 - r9, lr}
 	mrc	p14, 0, r4, c6, c0, 0	@ clock configuration, for turbo mode
 	mrc	p15, 0, r5, c15, c1, 0	@ CP access reg
···
 	bic	r4, r4, #2		@ clear frequency change bit
 	stmia	r0, {r4 - r9}		@ store cp regs
 	ldmfd	sp!, {r4 - r9, pc}
-ENDPROC(cpu_xscale_do_suspend)
+SYM_FUNC_END(cpu_xscale_do_suspend)
 
-ENTRY(cpu_xscale_do_resume)
+SYM_TYPED_FUNC_START(cpu_xscale_do_resume)
 	ldmia	r0, {r4 - r9}		@ load cp regs
 	mov	ip, #0
 	mcr	p15, 0, ip, c8, c7, 0	@ invalidate I & D TLBs
···
 	mcr	p15, 0, r8, c1, c0, 1	@ auxiliary control reg
 	mov	r0, r9			@ control register
 	b	cpu_resume_mmu
-ENDPROC(cpu_xscale_do_resume)
+SYM_FUNC_END(cpu_xscale_do_resume)
 #endif
 
 	.type	__xscale_setup, #function

arch/arm/mm/proc.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This file defines C prototypes for the low-level processor assembly functions
+ * and creates a reference for CFI. This needs to be done for every assembly
+ * processor ("proc") function that is called from C but does not have a
+ * corresponding C implementation.
+ *
+ * Processors are listed in the order they appear in the Makefile.
+ *
+ * Functions are listed if and only if they see use on the target CPU, and in
+ * the order they are defined in struct processor.
+ */
+#include <asm/proc-fns.h>
+
+#ifdef CONFIG_CPU_ARM7TDMI
+void cpu_arm7tdmi_proc_init(void);
+__ADDRESSABLE(cpu_arm7tdmi_proc_init);
+void cpu_arm7tdmi_proc_fin(void);
+__ADDRESSABLE(cpu_arm7tdmi_proc_fin);
+void cpu_arm7tdmi_reset(void);
+__ADDRESSABLE(cpu_arm7tdmi_reset);
+int cpu_arm7tdmi_do_idle(void);
+__ADDRESSABLE(cpu_arm7tdmi_do_idle);
+void cpu_arm7tdmi_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm7tdmi_dcache_clean_area);
+void cpu_arm7tdmi_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm7tdmi_switch_mm);
+#endif
+
+#ifdef CONFIG_CPU_ARM720T
+void cpu_arm720_proc_init(void);
+__ADDRESSABLE(cpu_arm720_proc_init);
+void cpu_arm720_proc_fin(void);
+__ADDRESSABLE(cpu_arm720_proc_fin);
+void cpu_arm720_reset(void);
+__ADDRESSABLE(cpu_arm720_reset);
+int cpu_arm720_do_idle(void);
+__ADDRESSABLE(cpu_arm720_do_idle);
+void cpu_arm720_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm720_dcache_clean_area);
+void cpu_arm720_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm720_switch_mm);
+void cpu_arm720_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm720_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM740T
+void cpu_arm740_proc_init(void);
+__ADDRESSABLE(cpu_arm740_proc_init);
+void cpu_arm740_proc_fin(void);
+__ADDRESSABLE(cpu_arm740_proc_fin);
+void cpu_arm740_reset(void);
+__ADDRESSABLE(cpu_arm740_reset);
+int cpu_arm740_do_idle(void);
+__ADDRESSABLE(cpu_arm740_do_idle);
+void cpu_arm740_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm740_dcache_clean_area);
+void cpu_arm740_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm740_switch_mm);
+#endif
+
+#ifdef CONFIG_CPU_ARM9TDMI
+void cpu_arm9tdmi_proc_init(void);
+__ADDRESSABLE(cpu_arm9tdmi_proc_init);
+void cpu_arm9tdmi_proc_fin(void);
+__ADDRESSABLE(cpu_arm9tdmi_proc_fin);
+void cpu_arm9tdmi_reset(void);
+__ADDRESSABLE(cpu_arm9tdmi_reset);
+int cpu_arm9tdmi_do_idle(void);
+__ADDRESSABLE(cpu_arm9tdmi_do_idle);
+void cpu_arm9tdmi_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm9tdmi_dcache_clean_area);
+void cpu_arm9tdmi_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm9tdmi_switch_mm);
+#endif
+
+#ifdef CONFIG_CPU_ARM920T
+void cpu_arm920_proc_init(void);
+__ADDRESSABLE(cpu_arm920_proc_init);
+void cpu_arm920_proc_fin(void);
+__ADDRESSABLE(cpu_arm920_proc_fin);
+void cpu_arm920_reset(void);
+__ADDRESSABLE(cpu_arm920_reset);
+int cpu_arm920_do_idle(void);
+__ADDRESSABLE(cpu_arm920_do_idle);
+void cpu_arm920_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm920_dcache_clean_area);
+void cpu_arm920_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm920_switch_mm);
+void cpu_arm920_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm920_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_arm920_do_suspend(void *);
+__ADDRESSABLE(cpu_arm920_do_suspend);
+void cpu_arm920_do_resume(void *);
+__ADDRESSABLE(cpu_arm920_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_ARM920T */
+
+#ifdef CONFIG_CPU_ARM922T
+void cpu_arm922_proc_init(void);
+__ADDRESSABLE(cpu_arm922_proc_init);
+void cpu_arm922_proc_fin(void);
+__ADDRESSABLE(cpu_arm922_proc_fin);
+void cpu_arm922_reset(void);
+__ADDRESSABLE(cpu_arm922_reset);
+int cpu_arm922_do_idle(void);
+__ADDRESSABLE(cpu_arm922_do_idle);
+void cpu_arm922_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm922_dcache_clean_area);
+void cpu_arm922_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm922_switch_mm);
+void cpu_arm922_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm922_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM925T
+void cpu_arm925_proc_init(void);
+__ADDRESSABLE(cpu_arm925_proc_init);
+void cpu_arm925_proc_fin(void);
+__ADDRESSABLE(cpu_arm925_proc_fin);
+void cpu_arm925_reset(void);
+__ADDRESSABLE(cpu_arm925_reset);
+int cpu_arm925_do_idle(void);
+__ADDRESSABLE(cpu_arm925_do_idle);
+void cpu_arm925_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm925_dcache_clean_area);
+void cpu_arm925_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm925_switch_mm);
+void cpu_arm925_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm925_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM926T
+void cpu_arm926_proc_init(void);
+__ADDRESSABLE(cpu_arm926_proc_init);
+void cpu_arm926_proc_fin(void);
+__ADDRESSABLE(cpu_arm926_proc_fin);
+void cpu_arm926_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_arm926_reset);
+int cpu_arm926_do_idle(void);
+__ADDRESSABLE(cpu_arm926_do_idle);
+void cpu_arm926_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm926_dcache_clean_area);
+void cpu_arm926_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm926_switch_mm);
+void cpu_arm926_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm926_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_arm926_do_suspend(void *);
+__ADDRESSABLE(cpu_arm926_do_suspend);
+void cpu_arm926_do_resume(void *);
+__ADDRESSABLE(cpu_arm926_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_ARM926T */
+
+#ifdef CONFIG_CPU_ARM940T
+void cpu_arm940_proc_init(void);
+__ADDRESSABLE(cpu_arm940_proc_init);
+void cpu_arm940_proc_fin(void);
+__ADDRESSABLE(cpu_arm940_proc_fin);
+void cpu_arm940_reset(void);
+__ADDRESSABLE(cpu_arm940_reset);
+int cpu_arm940_do_idle(void);
+__ADDRESSABLE(cpu_arm940_do_idle);
+void cpu_arm940_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm940_dcache_clean_area);
+void cpu_arm940_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm940_switch_mm);
+#endif
+
+#ifdef CONFIG_CPU_ARM946E
+void cpu_arm946_proc_init(void);
+__ADDRESSABLE(cpu_arm946_proc_init);
+void cpu_arm946_proc_fin(void);
+__ADDRESSABLE(cpu_arm946_proc_fin);
+void cpu_arm946_reset(void);
+__ADDRESSABLE(cpu_arm946_reset);
+int cpu_arm946_do_idle(void);
+__ADDRESSABLE(cpu_arm946_do_idle);
+void cpu_arm946_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm946_dcache_clean_area);
+void cpu_arm946_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm946_switch_mm);
+#endif
+
+#ifdef CONFIG_CPU_FA526
+void cpu_fa526_proc_init(void);
+__ADDRESSABLE(cpu_fa526_proc_init);
+void cpu_fa526_proc_fin(void);
+__ADDRESSABLE(cpu_fa526_proc_fin);
+void cpu_fa526_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_fa526_reset);
+int cpu_fa526_do_idle(void);
+__ADDRESSABLE(cpu_fa526_do_idle);
+void cpu_fa526_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_fa526_dcache_clean_area);
+void cpu_fa526_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_fa526_switch_mm);
+void cpu_fa526_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_fa526_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM1020
+void cpu_arm1020_proc_init(void);
+__ADDRESSABLE(cpu_arm1020_proc_init);
+void cpu_arm1020_proc_fin(void);
+__ADDRESSABLE(cpu_arm1020_proc_fin);
+void cpu_arm1020_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_arm1020_reset);
+int cpu_arm1020_do_idle(void);
+__ADDRESSABLE(cpu_arm1020_do_idle);
+void cpu_arm1020_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm1020_dcache_clean_area);
+void cpu_arm1020_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm1020_switch_mm);
+void cpu_arm1020_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm1020_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM1020E
+void cpu_arm1020e_proc_init(void);
+__ADDRESSABLE(cpu_arm1020e_proc_init);
+void cpu_arm1020e_proc_fin(void);
+__ADDRESSABLE(cpu_arm1020e_proc_fin);
+void cpu_arm1020e_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_arm1020e_reset);
+int cpu_arm1020e_do_idle(void);
+__ADDRESSABLE(cpu_arm1020e_do_idle);
+void cpu_arm1020e_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm1020e_dcache_clean_area);
+void cpu_arm1020e_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm1020e_switch_mm);
+void cpu_arm1020e_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm1020e_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM1022
+void cpu_arm1022_proc_init(void);
+__ADDRESSABLE(cpu_arm1022_proc_init);
+void cpu_arm1022_proc_fin(void);
+__ADDRESSABLE(cpu_arm1022_proc_fin);
+void cpu_arm1022_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_arm1022_reset);
+int cpu_arm1022_do_idle(void);
+__ADDRESSABLE(cpu_arm1022_do_idle);
+void cpu_arm1022_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm1022_dcache_clean_area);
+void cpu_arm1022_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm1022_switch_mm);
+void cpu_arm1022_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm1022_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_ARM1026
+void cpu_arm1026_proc_init(void);
+__ADDRESSABLE(cpu_arm1026_proc_init);
+void cpu_arm1026_proc_fin(void);
+__ADDRESSABLE(cpu_arm1026_proc_fin);
+void cpu_arm1026_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_arm1026_reset);
+int cpu_arm1026_do_idle(void);
+__ADDRESSABLE(cpu_arm1026_do_idle);
+void cpu_arm1026_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_arm1026_dcache_clean_area);
+void cpu_arm1026_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_arm1026_switch_mm);
+void cpu_arm1026_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_arm1026_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_SA110
+void cpu_sa110_proc_init(void);
+__ADDRESSABLE(cpu_sa110_proc_init);
+void cpu_sa110_proc_fin(void);
+__ADDRESSABLE(cpu_sa110_proc_fin);
+void cpu_sa110_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_sa110_reset);
+int cpu_sa110_do_idle(void);
+__ADDRESSABLE(cpu_sa110_do_idle);
+void cpu_sa110_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_sa110_dcache_clean_area);
+void cpu_sa110_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_sa110_switch_mm);
+void cpu_sa110_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_sa110_set_pte_ext);
+#endif
+
+#ifdef CONFIG_CPU_SA1100
+void cpu_sa1100_proc_init(void);
+__ADDRESSABLE(cpu_sa1100_proc_init);
+void cpu_sa1100_proc_fin(void);
+__ADDRESSABLE(cpu_sa1100_proc_fin);
+void cpu_sa1100_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_sa1100_reset);
+int cpu_sa1100_do_idle(void);
+__ADDRESSABLE(cpu_sa1100_do_idle);
+void cpu_sa1100_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_sa1100_dcache_clean_area);
+void cpu_sa1100_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_sa1100_switch_mm);
+void cpu_sa1100_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_sa1100_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_sa1100_do_suspend(void *);
+__ADDRESSABLE(cpu_sa1100_do_suspend);
+void cpu_sa1100_do_resume(void *);
+__ADDRESSABLE(cpu_sa1100_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_SA1100 */
+
+#ifdef CONFIG_CPU_XSCALE
+void cpu_xscale_proc_init(void);
+__ADDRESSABLE(cpu_xscale_proc_init);
+void cpu_xscale_proc_fin(void);
+__ADDRESSABLE(cpu_xscale_proc_fin);
+void cpu_xscale_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_xscale_reset);
+int cpu_xscale_do_idle(void);
+__ADDRESSABLE(cpu_xscale_do_idle);
+void cpu_xscale_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_xscale_dcache_clean_area);
+void cpu_xscale_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_xscale_switch_mm);
+void cpu_xscale_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_xscale_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_xscale_do_suspend(void *);
+__ADDRESSABLE(cpu_xscale_do_suspend);
+void cpu_xscale_do_resume(void *);
+__ADDRESSABLE(cpu_xscale_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_XSCALE */
+
+#ifdef CONFIG_CPU_XSC3
+void cpu_xsc3_proc_init(void);
+__ADDRESSABLE(cpu_xsc3_proc_init);
+void cpu_xsc3_proc_fin(void);
+__ADDRESSABLE(cpu_xsc3_proc_fin);
+void cpu_xsc3_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_xsc3_reset);
+int cpu_xsc3_do_idle(void);
+__ADDRESSABLE(cpu_xsc3_do_idle);
+void cpu_xsc3_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_xsc3_dcache_clean_area);
+void cpu_xsc3_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_xsc3_switch_mm);
+void cpu_xsc3_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_xsc3_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_xsc3_do_suspend(void *);
+__ADDRESSABLE(cpu_xsc3_do_suspend);
+void cpu_xsc3_do_resume(void *);
+__ADDRESSABLE(cpu_xsc3_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_XSC3 */
+
+#ifdef CONFIG_CPU_MOHAWK
+void cpu_mohawk_proc_init(void);
+__ADDRESSABLE(cpu_mohawk_proc_init);
+void cpu_mohawk_proc_fin(void);
+__ADDRESSABLE(cpu_mohawk_proc_fin);
+void cpu_mohawk_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_mohawk_reset);
+int cpu_mohawk_do_idle(void);
+__ADDRESSABLE(cpu_mohawk_do_idle);
+void cpu_mohawk_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_mohawk_dcache_clean_area);
+void cpu_mohawk_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_mohawk_switch_mm);
+void cpu_mohawk_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_mohawk_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_mohawk_do_suspend(void *);
+__ADDRESSABLE(cpu_mohawk_do_suspend);
+void cpu_mohawk_do_resume(void *);
+__ADDRESSABLE(cpu_mohawk_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_MOHAWK */
+
+#ifdef CONFIG_CPU_FEROCEON
+void cpu_feroceon_proc_init(void);
+__ADDRESSABLE(cpu_feroceon_proc_init);
+void cpu_feroceon_proc_fin(void);
+__ADDRESSABLE(cpu_feroceon_proc_fin);
+void cpu_feroceon_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_feroceon_reset);
+int cpu_feroceon_do_idle(void);
+__ADDRESSABLE(cpu_feroceon_do_idle);
+void cpu_feroceon_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_feroceon_dcache_clean_area);
+void cpu_feroceon_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_feroceon_switch_mm);
+void cpu_feroceon_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_feroceon_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_feroceon_do_suspend(void *);
+__ADDRESSABLE(cpu_feroceon_do_suspend);
+void cpu_feroceon_do_resume(void *);
+__ADDRESSABLE(cpu_feroceon_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_FEROCEON */
+
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
+void cpu_v6_proc_init(void);
+__ADDRESSABLE(cpu_v6_proc_init);
+void cpu_v6_proc_fin(void);
+__ADDRESSABLE(cpu_v6_proc_fin);
+void cpu_v6_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_v6_reset);
+int cpu_v6_do_idle(void);
+__ADDRESSABLE(cpu_v6_do_idle);
+void cpu_v6_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_v6_dcache_clean_area);
+void cpu_v6_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_v6_switch_mm);
+void cpu_v6_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_v6_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_v6_do_suspend(void *);
+__ADDRESSABLE(cpu_v6_do_suspend);
+void cpu_v6_do_resume(void *);
+__ADDRESSABLE(cpu_v6_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CPU_V6 */
+
+#ifdef CONFIG_CPU_V7
+void cpu_v7_proc_init(void);
+__ADDRESSABLE(cpu_v7_proc_init);
+void cpu_v7_proc_fin(void);
+__ADDRESSABLE(cpu_v7_proc_fin);
+void cpu_v7_reset(void);
+__ADDRESSABLE(cpu_v7_reset);
+int cpu_v7_do_idle(void);
+__ADDRESSABLE(cpu_v7_do_idle);
+#ifdef CONFIG_PJ4B_ERRATA_4742
+int cpu_pj4b_do_idle(void);
+__ADDRESSABLE(cpu_pj4b_do_idle);
+#endif
+void cpu_v7_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_v7_dcache_clean_area);
+void cpu_v7_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+/* Special switch_mm() callbacks to work around bugs in v7 */
+__ADDRESSABLE(cpu_v7_switch_mm);
+void cpu_v7_iciallu_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_v7_iciallu_switch_mm);
+void cpu_v7_bpiall_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_v7_bpiall_switch_mm);
+#ifdef CONFIG_ARM_LPAE
+void cpu_v7_set_pte_ext(pte_t *ptep, pte_t pte);
+#else
+void cpu_v7_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+#endif
+__ADDRESSABLE(cpu_v7_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_v7_do_suspend(void *);
+__ADDRESSABLE(cpu_v7_do_suspend);
+void cpu_v7_do_resume(void *);
+__ADDRESSABLE(cpu_v7_do_resume);
+/* Special versions of suspend and resume for the CA9MP cores */
+void cpu_ca9mp_do_suspend(void *);
+__ADDRESSABLE(cpu_ca9mp_do_suspend);
+void cpu_ca9mp_do_resume(void *);
+__ADDRESSABLE(cpu_ca9mp_do_resume);
+/* Special versions of suspend and resume for the Marvell PJ4B cores */
+#ifdef CONFIG_CPU_PJ4B
+void cpu_pj4b_do_suspend(void *);
+__ADDRESSABLE(cpu_pj4b_do_suspend);
+void cpu_pj4b_do_resume(void *);
+__ADDRESSABLE(cpu_pj4b_do_resume);
+#endif /* CONFIG_CPU_PJ4B */
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+#endif /* CONFIG_CPU_V7 */
+
+#ifdef CONFIG_CPU_V7M
+void cpu_v7m_proc_init(void);
+__ADDRESSABLE(cpu_v7m_proc_init);
+void cpu_v7m_proc_fin(void);
+__ADDRESSABLE(cpu_v7m_proc_fin);
+void cpu_v7m_reset(unsigned long addr, bool hvc);
+__ADDRESSABLE(cpu_v7m_reset);
+int cpu_v7m_do_idle(void);
+__ADDRESSABLE(cpu_v7m_do_idle);
+void cpu_v7m_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_v7m_dcache_clean_area);
+void cpu_v7m_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm);
+__ADDRESSABLE(cpu_v7m_switch_mm);
+void cpu_v7m_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+__ADDRESSABLE(cpu_v7m_set_pte_ext);
+#ifdef CONFIG_ARM_CPU_SUSPEND
+void cpu_v7m_do_suspend(void *);
+__ADDRESSABLE(cpu_v7m_do_suspend);
+void cpu_v7m_do_resume(void *);
+__ADDRESSABLE(cpu_v7m_do_resume);
+#endif /* CONFIG_ARM_CPU_SUSPEND */
+void cpu_cm7_proc_fin(void);
+__ADDRESSABLE(cpu_cm7_proc_fin);
+void cpu_cm7_dcache_clean_area(void *addr, int size);
+__ADDRESSABLE(cpu_cm7_dcache_clean_area);
+#endif /* CONFIG_CPU_V7M */

arch/arm/mm/tlb-fa.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/tlbflush.h>
···
  *	- mm    - mm_struct describing address space
  */
 	.align	4
-ENTRY(fa_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(fa_flush_user_tlb_range)
 	vma_vm_mm ip, r2
 	act_mm	r3				@ get current->active_mm
 	eors	r3, ip, r3			@ == mm ?
···
 	blo	1b
 	mcr	p15, 0, r3, c7, c10, 4		@ data write barrier
 	ret	lr
+SYM_FUNC_END(fa_flush_user_tlb_range)
 
 
-ENTRY(fa_flush_kern_tlb_range)
+SYM_TYPED_FUNC_START(fa_flush_kern_tlb_range)
 	mov	r3, #0
 	mcr	p15, 0, r3, c7, c10, 4		@ drain WB
 	bic	r0, r0, #0x0ff
···
 	mcr	p15, 0, r3, c7, c10, 4		@ data write barrier
 	mcr	p15, 0, r3, c7, c5, 4		@ prefetch flush (isb)
 	ret	lr
-
-	__INITDATA
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions fa, fa_tlb_flags
+SYM_FUNC_END(fa_flush_kern_tlb_range)

arch/arm/mm/tlb-v4.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/tlbflush.h>
···
  *	- mm    - mm_struct describing address space
  */
 	.align	5
-ENTRY(v4_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(v4_flush_user_tlb_range)
 	vma_vm_mm ip, r2
 	act_mm	r3				@ get current->active_mm
 	eors	r3, ip, r3				@ == mm ?
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
+SYM_FUNC_END(v4_flush_user_tlb_range)
 
 /*
  *	v4_flush_kern_tlb_range(start, end)
···
  *	- start - virtual address (may not be aligned)
  *	- end   - virtual address (may not be aligned)
  */
+#ifdef CONFIG_CFI_CLANG
+SYM_TYPED_FUNC_START(v4_flush_kern_tlb_range)
+	b	.v4_flush_kern_tlb_range
+SYM_FUNC_END(v4_flush_kern_tlb_range)
+#else
 .globl v4_flush_kern_tlb_range
 .equ v4_flush_kern_tlb_range, .v4_flush_kern_tlb_range
-
-	__INITDATA
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions v4, v4_tlb_flags
+#endif

arch/arm/mm/tlb-v4wb.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/tlbflush.h>
···
  *	- mm    - mm_struct describing address space
  */
 	.align	5
-ENTRY(v4wb_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(v4wb_flush_user_tlb_range)
 	vma_vm_mm ip, r2
 	act_mm	r3				@ get current->active_mm
 	eors	r3, ip, r3				@ == mm ?
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
+SYM_FUNC_END(v4wb_flush_user_tlb_range)
 
 /*
  *	v4_flush_kern_tlb_range(start, end)
···
  *	- start - virtual address (may not be aligned)
  *	- end   - virtual address (may not be aligned)
  */
-ENTRY(v4wb_flush_kern_tlb_range)
+SYM_TYPED_FUNC_START(v4wb_flush_kern_tlb_range)
 	mov	r3, #0
 	mcr	p15, 0, r3, c7, c10, 4		@ drain WB
 	bic	r0, r0, #0x0ff
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
-
-	__INITDATA
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions v4wb, v4wb_tlb_flags
+SYM_FUNC_END(v4wb_flush_kern_tlb_range)

arch/arm/mm/tlb-v4wbi.S

···
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/tlbflush.h>
···
  *	- mm    - mm_struct describing address space
  */
 	.align	5
-ENTRY(v4wbi_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(v4wbi_flush_user_tlb_range)
 	vma_vm_mm ip, r2
 	act_mm	r3				@ get current->active_mm
 	eors	r3, ip, r3			@ == mm ?
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
+SYM_FUNC_END(v4wbi_flush_user_tlb_range)
 
-ENTRY(v4wbi_flush_kern_tlb_range)
+SYM_TYPED_FUNC_START(v4wbi_flush_kern_tlb_range)
 	mov	r3, #0
 	mcr	p15, 0, r3, c7, c10, 4		@ drain WB
 	bic	r0, r0, #0x0ff
···
 	cmp	r0, r1
 	blo	1b
 	ret	lr
-
-	__INITDATA
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions v4wbi, v4wbi_tlb_flags
+SYM_FUNC_END(v4wbi_flush_kern_tlb_range)

arch/arm/mm/tlb-v6.S

···
  */
 #include <linux/init.h>
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/asm-offsets.h>
 #include <asm/assembler.h>
 #include <asm/page.h>
···
  *	- the "Invalidate single entry" instruction will invalidate
  *	  both the I and the D TLBs on Harvard-style TLBs
  */
-ENTRY(v6wbi_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(v6wbi_flush_user_tlb_range)
 	vma_vm_mm r3, r2			@ get vma->vm_mm
 	mov	ip, #0
 	mmid	r3, r3				@ get vm_mm->context.id
···
 	blo	1b
 	mcr	p15, 0, ip, c7, c10, 4		@ data synchronization barrier
 	ret	lr
+SYM_FUNC_END(v6wbi_flush_user_tlb_range)
 
 /*
  *	v6wbi_flush_kern_tlb_range(start,end)
···
  *	- start - start address (may not be aligned)
  *	- end   - end address (exclusive, may not be aligned)
  */
-ENTRY(v6wbi_flush_kern_tlb_range)
+SYM_TYPED_FUNC_START(v6wbi_flush_kern_tlb_range)
 	mov	r2, #0
 	mcr	p15, 0, r2, c7, c10, 4		@ drain write buffer
 	mov	r0, r0, lsr #PAGE_SHIFT		@ align address
···
 	mcr	p15, 0, r2, c7, c10, 4		@ data synchronization barrier
 	mcr	p15, 0, r2, c7, c5, 4		@ prefetch flush (isb)
 	ret	lr
-
-	__INIT
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions v6wbi, v6wbi_tlb_flags
+SYM_FUNC_END(v6wbi_flush_kern_tlb_range)

arch/arm/mm/tlb-v7.S

···
  */
 #include <linux/init.h>
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/page.h>
···
  *	- the "Invalidate single entry" instruction will invalidate
  *	  both the I and the D TLBs on Harvard-style TLBs
  */
-ENTRY(v7wbi_flush_user_tlb_range)
+SYM_TYPED_FUNC_START(v7wbi_flush_user_tlb_range)
 	vma_vm_mm r3, r2			@ get vma->vm_mm
 	mmid	r3, r3				@ get vm_mm->context.id
 	dsb	ish
···
 	blo	1b
 	dsb	ish
 	ret	lr
-ENDPROC(v7wbi_flush_user_tlb_range)
+SYM_FUNC_END(v7wbi_flush_user_tlb_range)
 
 /*
  *	v7wbi_flush_kern_tlb_range(start,end)
···
  *	- start - start address (may not be aligned)
  *	- end   - end address (exclusive, may not be aligned)
  */
-ENTRY(v7wbi_flush_kern_tlb_range)
+SYM_TYPED_FUNC_START(v7wbi_flush_kern_tlb_range)
 	dsb	ish
 	mov	r0, r0, lsr #PAGE_SHIFT		@ align address
 	mov	r1, r1, lsr #PAGE_SHIFT
···
 	dsb	ish
 	isb
 	ret	lr
-ENDPROC(v7wbi_flush_kern_tlb_range)
-
-	__INIT
-
-	/* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
-	define_tlb_functions v7wbi, v7wbi_tlb_flags_up, flags_smp=v7wbi_tlb_flags_smp
+SYM_FUNC_END(v7wbi_flush_kern_tlb_range)

arch/arm/mm/tlb.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright 2024 Google LLC
+// Author: Ard Biesheuvel <[e-mail]>
+
+#include <linux/types.h>
+#include <asm/tlbflush.h>
+
+#ifdef CONFIG_CPU_TLB_V4WT
+void v4_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void v4_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns v4_tlb_fns __initconst = {
+	.flush_user_range	= v4_flush_user_tlb_range,
+	.flush_kern_range	= v4_flush_kern_tlb_range,
+	.tlb_flags		= v4_tlb_flags,
+};
+#endif
+
+#ifdef CONFIG_CPU_TLB_V4WB
+void v4wb_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void v4wb_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns v4wb_tlb_fns __initconst = {
+	.flush_user_range	= v4wb_flush_user_tlb_range,
+	.flush_kern_range	= v4wb_flush_kern_tlb_range,
+	.tlb_flags		= v4wb_tlb_flags,
+};
+#endif
+
+#if defined(CONFIG_CPU_TLB_V4WBI) || defined(CONFIG_CPU_TLB_FEROCEON)
+void v4wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void v4wbi_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns v4wbi_tlb_fns __initconst = {
+	.flush_user_range	= v4wbi_flush_user_tlb_range,
+	.flush_kern_range	= v4wbi_flush_kern_tlb_range,
+	.tlb_flags		= v4wbi_tlb_flags,
+};
+#endif
+
+#ifdef CONFIG_CPU_TLB_V6
+void v6wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void v6wbi_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns v6wbi_tlb_fns __initconst = {
+	.flush_user_range	= v6wbi_flush_user_tlb_range,
+	.flush_kern_range	= v6wbi_flush_kern_tlb_range,
+	.tlb_flags		= v6wbi_tlb_flags,
+};
+#endif
+
+#ifdef CONFIG_CPU_TLB_V7
+void v7wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void v7wbi_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns v7wbi_tlb_fns __initconst = {
+	.flush_user_range	= v7wbi_flush_user_tlb_range,
+	.flush_kern_range	= v7wbi_flush_kern_tlb_range,
+	.tlb_flags		= IS_ENABLED(CONFIG_SMP) ? v7wbi_tlb_flags_smp
+							 : v7wbi_tlb_flags_up,
+};
+
+#ifdef CONFIG_SMP_ON_UP
+/* This will be run-time patched so the offset better be right */
+static_assert(offsetof(struct cpu_tlb_fns, tlb_flags) == 8);
+
+asm("	.pushsection	\".alt.smp.init\", \"a\"		\n" \
+    "	.align		2					\n" \
+    "	.long		v7wbi_tlb_fns + 8 - .			\n" \
+    "	.long "  	__stringify(v7wbi_tlb_flags_up) "	\n" \
+    "	.popsection						\n");
+#endif
+#endif
+
+#ifdef CONFIG_CPU_TLB_FA
+void fa_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
+void fa_flush_kern_tlb_range(unsigned long, unsigned long);
+
+struct cpu_tlb_fns fa_tlb_fns __initconst = {
+	.flush_user_range	= fa_flush_user_tlb_range,
+	.flush_kern_range	= fa_flush_kern_tlb_range,
+	.tlb_flags		= fa_tlb_flags,
+};
+#endif

drivers/amba/bus.c

···
 	 * waiting on amba_match(). So, register a stub driver to make sure
 	 * amba_match() is called even if no amba driver has been registered.
 	 */
-	return amba_driver_register(&amba_proxy_drv);
+	return __amba_driver_register(&amba_proxy_drv, NULL);
 }
 late_initcall_sync(amba_stub_drv_init);
 
 /**
- *	amba_driver_register - register an AMBA device driver
+ *	__amba_driver_register - register an AMBA device driver
  *	@drv: amba device driver structure
+ *	@owner: owning module/driver
  *
  *	Register an AMBA device driver with the Linux device model
  *	core.  If devices pre-exist, the drivers probe function will
  *	be called.
  */
-int amba_driver_register(struct amba_driver *drv)
+int __amba_driver_register(struct amba_driver *drv,
+			   struct module *owner)
 {
 	if (!drv->probe)
 		return -EINVAL;
 
+	drv->drv.owner = owner;
 	drv->drv.bus = &amba_bustype;
 
 	return driver_register(&drv->drv);
 }
-EXPORT_SYMBOL(amba_driver_register);
+EXPORT_SYMBOL(__amba_driver_register);
 
 /**
  *	amba_driver_unregister - remove an AMBA device driver

drivers/char/hw_random/nomadik-rng.c

···
 
 static struct amba_driver nmk_rng_driver = {
 	.drv = {
-		.owner = THIS_MODULE,
 		.name = "rng",
 		},
 	.probe = nmk_rng_probe,

drivers/clk/clkdev.c

···
 	va_list ap)
 {
 	struct clk_lookup_alloc *cla;
+	struct va_format vaf;
+	const char *failure;
+	va_list ap_copy;
+	size_t max_size;
+	ssize_t res;
 
 	cla = kzalloc(sizeof(*cla), GFP_KERNEL);
 	if (!cla)
 		return NULL;
 
+	va_copy(ap_copy, ap);
+
 	cla->cl.clk_hw = hw;
 	if (con_id) {
-		strscpy(cla->con_id, con_id, sizeof(cla->con_id));
+		res = strscpy(cla->con_id, con_id, sizeof(cla->con_id));
+		if (res < 0) {
+			max_size = sizeof(cla->con_id);
+			failure = "connection";
+			goto fail;
+		}
 		cla->cl.con_id = cla->con_id;
 	}
 
 	if (dev_fmt) {
-		vscnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap);
+		res = vsnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap);
+		if (res >= sizeof(cla->dev_id)) {
+			max_size = sizeof(cla->dev_id);
+			failure = "device";
+			goto fail;
+		}
 		cla->cl.dev_id = cla->dev_id;
 	}
 
+	va_end(ap_copy);
+
 	return &cla->cl;
+
+fail:
+	if (dev_fmt)
+		vaf.fmt = dev_fmt;
+	else
+		vaf.fmt = "null-device";
+	vaf.va = &ap_copy;
+	pr_err("%pV:%s: %s ID is greater than %zu\n",
+	       &vaf, con_id, failure, max_size);
+	va_end(ap_copy);
+	kfree(cla);
+	return NULL;
 }
 
 static struct clk_lookup *

drivers/dma/pl330.c

···
 
 static struct amba_driver pl330_driver = {
 	.drv = {
-		.owner = THIS_MODULE,
 		.name = "dma-pl330",
 		.pm = &pl330_pm,
 	},

drivers/hwtracing/coresight/coresight-catu.c

···
 static struct amba_driver catu_driver = {
 	.drv = {
 		.name			= "coresight-catu",
-		.owner			= THIS_MODULE,
 		.suppress_bind_attrs	= true,
 	},
 	.probe				= catu_probe,

drivers/hwtracing/coresight/coresight-cti-core.c

···
 static struct amba_driver cti_driver = {
 	.drv = {
 		.name	= "coresight-cti",
-		.owner = THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe		= cti_probe,

drivers/hwtracing/coresight/coresight-etb10.c

···
 static struct amba_driver etb_driver = {
 	.drv = {
 		.name	= "coresight-etb10",
-		.owner	= THIS_MODULE,
 		.pm	= &etb_dev_pm_ops,
 		.suppress_bind_attrs = true,
 

drivers/hwtracing/coresight/coresight-etm3x-core.c

···
 static struct amba_driver etm_driver = {
 	.drv = {
 		.name	= "coresight-etm3x",
-		.owner	= THIS_MODULE,
 		.pm	= &etm_dev_pm_ops,
 		.suppress_bind_attrs = true,
 	},

drivers/hwtracing/coresight/coresight-etm4x-core.c

···
 static struct amba_driver etm4x_amba_driver = {
 	.drv = {
 		.name   = "coresight-etm4x",
-		.owner  = THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe		= etm4_probe_amba,

drivers/hwtracing/coresight/coresight-funnel.c

···
 static struct amba_driver dynamic_funnel_driver = {
 	.drv = {
 		.name	= "coresight-dynamic-funnel",
-		.owner	= THIS_MODULE,
 		.pm	= &funnel_dev_pm_ops,
 		.suppress_bind_attrs = true,
 	},

drivers/hwtracing/coresight/coresight-replicator.c

···
 	.drv = {
 		.name	= "coresight-dynamic-replicator",
 		.pm	= &replicator_dev_pm_ops,
-		.owner	= THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe		= dynamic_replicator_probe,

drivers/hwtracing/coresight/coresight-stm.c

···
 static struct amba_driver stm_driver = {
 	.drv = {
 		.name   = "coresight-stm",
-		.owner	= THIS_MODULE,
 		.pm	= &stm_dev_pm_ops,
 		.suppress_bind_attrs = true,
 	},

drivers/hwtracing/coresight/coresight-tmc-core.c

···
 static struct amba_driver tmc_driver = {
 	.drv = {
 		.name   = "coresight-tmc",
-		.owner  = THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe		= tmc_probe,

drivers/hwtracing/coresight/coresight-tpda.c

···
 static struct amba_driver tpda_driver = {
 	.drv = {
 		.name   = "coresight-tpda",
-		.owner	= THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe          = tpda_probe,

drivers/hwtracing/coresight/coresight-tpdm.c

···
 static struct amba_driver tpdm_driver = {
 	.drv = {
 		.name   = "coresight-tpdm",
-		.owner	= THIS_MODULE,
 		.suppress_bind_attrs = true,
 	},
 	.probe          = tpdm_probe,

drivers/hwtracing/coresight/coresight-tpiu.c

···
 static struct amba_driver tpiu_driver = {
 	.drv = {
 		.name	= "coresight-tpiu",
-		.owner	= THIS_MODULE,
 		.pm	= &tpiu_dev_pm_ops,
 		.suppress_bind_attrs = true,
 	},

drivers/i2c/busses/i2c-nomadik.c

···
 
 static struct amba_driver nmk_i2c_driver = {
 	.drv = {
-		.owner = THIS_MODULE,
 		.name = DRIVER_NAME,
 		.pm = pm_ptr(&nmk_i2c_pm),
 	},

drivers/input/serio/ambakmi.c

···
 static struct amba_driver ambakmi_driver = {
 	.drv		= {
 		.name	= "kmi-pl050",
-		.owner	= THIS_MODULE,
 		.pm	= pm_sleep_ptr(&amba_kmi_dev_pm_ops),
 	},
 	.id_table	= amba_kmi_idtable,

drivers/memory/pl353-smc.c

···
 
 static struct amba_driver pl353_smc_driver = {
 	.drv = {
-		.owner = THIS_MODULE,
 		.name = "pl353-smc",
 		.pm = &pl353_smc_dev_pm_ops,
 	},

drivers/vfio/platform/vfio_amba.c

···
 	.id_table = vfio_amba_ids,
 	.drv = {
 		.name = "vfio-amba",
-		.owner = THIS_MODULE,
 	},
 	.driver_managed_dma = true,
 };

include/linux/amba/bus.h

···
 #define amba_get_drvdata(d)	dev_get_drvdata(&d->dev)
 #define amba_set_drvdata(d,p)	dev_set_drvdata(&d->dev, p)
 
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define amba_driver_register(drv) \
+	__amba_driver_register(drv, THIS_MODULE)
+
 #ifdef CONFIG_ARM_AMBA
-int amba_driver_register(struct amba_driver *);
+int __amba_driver_register(struct amba_driver *, struct module *);
 void amba_driver_unregister(struct amba_driver *);
 #else
-static inline int amba_driver_register(struct amba_driver *drv)
+static inline int __amba_driver_register(struct amba_driver *drv,
+					 struct module *owner)
 {
 	return -EINVAL;
 }