Merge tag 'xtensa-20181228' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

- switch to generated syscall table

- switch ptrace to regsets, use regsets for core dumps

- complete tracehook implementation

- add syscall tracepoints support

- add jumplabels support

- add memtest support

- drop unused/duplicated code from entry.S, ptrace.c, coprocessor.S,
elf.h and syscall.h

- clean up warnings caused by WSR/RSR macros

- clean up DTC warnings about SPI controller node names in xtfpga.dtsi

- simplify coprocessor.S

- get rid of explicit 'l32r' instruction usage in assembly

* tag 'xtensa-20181228' of git://github.com/jcmvbkbc/linux-xtensa: (25 commits)
xtensa: implement jump_label support
xtensa: implement syscall tracepoints
xtensa: implement tracehook functions and enable HAVE_ARCH_TRACEHOOK
xtensa: enable CORE_DUMP_USE_REGSET
xtensa: implement TIE regset
xtensa: implement task_user_regset_view
xtensa: call do_syscall_trace_{enter,leave} selectively
xtensa: use NO_SYSCALL instead of -1
xtensa: define syscall_get_arch()
Move EM_XTENSA to uapi/linux/elf-em.h
xtensa: support memtest
xtensa: don't use l32r opcode directly
xtensa: xtfpga.dtsi: fix dtc warnings about SPI
xtensa: don't clear cpenable unconditionally on release
xtensa: simplify coprocessor.S
xtensa: clean up WSR*/RSR*/get_sr/set_sr
xtensa: drop unused declarations from elf.h
xtensa: clean up syscall.h
xtensa: drop unused coprocessor helper functions
xtensa: drop custom PTRACE_{PEEK,POKE}{TEXT,DATA}
...

Documentation/features/core/jump-labels/arch-support.txt

···
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: |  ok  |
-    |      xtensa: | TODO |
+    |      xtensa: |  ok  |
     -----------------------

arch/xtensa/Kconfig

···
 	select GENERIC_PCI_IOMAP
 	select GENERIC_SCHED_CLOCK
 	select GENERIC_STRNCPY_FROM_USER if KASAN
+	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_KASAN if MMU
+	select HAVE_ARCH_TRACEHOOK
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_CONTIGUOUS
 	select HAVE_EXIT_THREAD
···
 	select HAVE_OPROFILE
 	select HAVE_PERF_EVENTS
 	select HAVE_STACKPROTECTOR
+	select HAVE_SYSCALL_TRACEPOINTS
 	select IRQ_DOMAIN
 	select MODULES_USE_ELF_RELA
 	select PERF_USE_VMALLOC

arch/xtensa/Makefile

···
 all Image zImage uImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
+archheaders:
+	$(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all
+
 define archhelp
   @echo '* Image       - Kernel ELF image with reset vector'
   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'

arch/xtensa/boot/boot-elf/bootstrap.S

···
 	.begin  no-absolute-literals
 	.literal_position
 
-#if defined(CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX) && \
-	XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
-	.literal RomInitAddr, CONFIG_KERNEL_LOAD_ADDRESS
-#else
-	.literal RomInitAddr, KERNELOFFSET
-#endif
-#ifndef CONFIG_PARSE_BOOTPARAM
-	.literal RomBootParam, 0
-#else
-	.literal RomBootParam, _bootparam
-
+#ifdef CONFIG_PARSE_BOOTPARAM
 	.align 4
 _bootparam:
 	.short	BP_TAG_FIRST
···
 	initialize_mmu
 #endif
 
-	.end    no-absolute-literals
-
 	rsil    a0, XCHAL_DEBUGLEVEL-1
 	rsync
 reset:
-	l32r    a0, RomInitAddr
-	l32r	a2, RomBootParam
+#if defined(CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX) && \
+	XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
+	movi	a0, CONFIG_KERNEL_LOAD_ADDRESS
+#else
+	movi	a0, KERNELOFFSET
+#endif
+#ifdef CONFIG_PARSE_BOOTPARAM
+	movi	a2, _bootparam
+#else
+	movi	a2, 0
+#endif
 	movi	a3, 0
 	movi	a4, 0
 	jx      a0
+
+	.end    no-absolute-literals

arch/xtensa/boot/dts/xtfpga.dtsi

···
 			};
 		};
 
-		spi0: spi-master@0d0a0000 {
+		spi0: spi@0d0a0000 {
 			compatible = "cdns,xtfpga-spi";
 			#address-cells = <1>;
 			#size-cells = <0>;

arch/xtensa/include/asm/Kbuild

···
+generated-y += syscall_table.h
 generic-y += bug.h
 generic-y += compat.h
 generic-y += device.h

arch/xtensa/include/asm/coprocessor.h

···
 #ifndef _XTENSA_COPROCESSOR_H
 #define _XTENSA_COPROCESSOR_H
 
-#include <linux/stringify.h>
 #include <variant/core.h>
 #include <variant/tie.h>
 #include <asm/types.h>
···
 
 #ifndef __ASSEMBLY__
 
-
-#if XCHAL_HAVE_CP
-
-#define RSR_CPENABLE(x)	do {						  \
-	__asm__ __volatile__("rsr %0, cpenable" : "=a" (x));		  \
-	} while(0);
-#define WSR_CPENABLE(x)	do {						  \
-	__asm__ __volatile__("wsr %0, cpenable; rsync" :: "a" (x));	  \
-	} while(0);
-
-#endif /* XCHAL_HAVE_CP */
-
-
 /*
  * Additional registers.
  * We define three types of additional registers:
···
 	__attribute__ ((aligned (XCHAL_CP7_SA_ALIGN)));
 
 extern struct thread_info* coprocessor_owner[XCHAL_CP_MAX];
-extern void coprocessor_save(void*, int);
-extern void coprocessor_load(void*, int);
 extern void coprocessor_flush(struct thread_info*, int);
-extern void coprocessor_restore(struct thread_info*, int);
 
 extern void coprocessor_release_all(struct thread_info*);
 extern void coprocessor_flush_all(struct thread_info*);
-
-static inline void coprocessor_clear_cpenable(void)
-{
-	unsigned long i = 0;
-	WSR_CPENABLE(i);
-}
 
 #endif	/* XTENSA_HAVE_COPROCESSORS */
 

arch/xtensa/include/asm/elf.h

···
 
 #include <asm/ptrace.h>
 #include <asm/coprocessor.h>
+#include <linux/elf-em.h>
 
 /* Xtensa processor ELF architecture-magic number */
 
-#define EM_XTENSA	94
 #define EM_XTENSA_OLD	0xABC7
 
 /* Xtensa relocations defined by the ABIs */
···
 
 typedef unsigned long elf_greg_t;
 
-typedef struct {
-	elf_greg_t pc;
-	elf_greg_t ps;
-	elf_greg_t lbeg;
-	elf_greg_t lend;
-	elf_greg_t lcount;
-	elf_greg_t sar;
-	elf_greg_t windowstart;
-	elf_greg_t windowbase;
-	elf_greg_t threadptr;
-	elf_greg_t reserved[7+48];
-	elf_greg_t a[64];
-} xtensa_gregset_t;
+typedef struct user_pt_regs xtensa_gregset_t;
 
 #define ELF_NGREG	(sizeof(xtensa_gregset_t) / sizeof(elf_greg_t))
 
···
 
 typedef unsigned int elf_fpreg_t;
 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
-
-#define ELF_CORE_COPY_REGS(_eregs, _pregs) 				\
-	xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs);
-
-extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *);
 
 /*
  * This is used to ensure we don't load something for the wrong architecture.
···
 #define ELF_ARCH	EM_XTENSA
 
 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
+#define CORE_DUMP_USE_REGSET
 
 /*
  * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
···
 
 #define SET_PERSONALITY(ex) \
 	set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK)))
-
-struct task_struct;
-
-extern void do_copy_regs (xtensa_gregset_t*, struct pt_regs*,
-			  struct task_struct*);
-extern void do_restore_regs (xtensa_gregset_t*, struct pt_regs*,
-			     struct task_struct*);
-extern void do_save_fpregs (elf_fpregset_t*, struct pt_regs*,
-			    struct task_struct*);
-extern int do_restore_fpregs (elf_fpregset_t*, struct pt_regs*,
-			      struct task_struct*);
 
 #endif	/* _XTENSA_ELF_H */

arch/xtensa/include/asm/futex.h

···
 	"3:\n"						\
 	"	.section .fixup,\"ax\"\n"		\
 	"	.align 4\n"				\
-	"4:	.long	3b\n"				\
-	"5:	l32r	%0, 4b\n"			\
+	"	.literal_position\n"			\
+	"5:	movi	%0, 3b\n"			\
 	"	movi	%1, %3\n"			\
 	"	jx	%0\n"				\
 	"	.previous\n"				\
···
 	"2:\n"
 	"	.section .fixup,\"ax\"\n"
 	"	.align 4\n"
-	"3:	.long	2b\n"
-	"4:	l32r	%1, 3b\n"
+	"	.literal_position\n"
+	"4:	movi	%1, 2b\n"
 	"	movi	%0, %7\n"
 	"	jx	%1\n"
 	"	.previous\n"

arch/xtensa/include/asm/irqflags.h

···
 #ifndef _XTENSA_IRQFLAGS_H
 #define _XTENSA_IRQFLAGS_H
 
+#include <linux/stringify.h>
 #include <linux/types.h>
 #include <asm/processor.h>
 

arch/xtensa/include/asm/jump_label.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2018 Cadence Design Systems Inc. */
+
+#ifndef _ASM_XTENSA_JUMP_LABEL_H
+#define _ASM_XTENSA_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+#define JUMP_LABEL_NOP_SIZE 3
+
+static __always_inline bool arch_static_branch(struct static_key *key,
+					       bool branch)
+{
+	asm_volatile_goto("1:\n\t"
+			  "_nop\n\t"
+			  ".pushsection __jump_table,  \"aw\"\n\t"
+			  ".word 1b, %l[l_yes], %c0\n\t"
+			  ".popsection\n\t"
+			  : :  "i" (&((char *)key)[branch]) :  : l_yes);
+
+	return false;
+l_yes:
+	return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key,
+						    bool branch)
+{
+	/*
+	 * Xtensa assembler will mark certain points in the code
+	 * as unreachable, so that later assembler or linker relaxation
+	 * passes could use them. A spot right after the J instruction
+	 * is one such point. Assembler and/or linker may insert padding
+	 * or literals here, breaking code flow in case the J instruction
+	 * is later replaced with NOP. Put a label right after the J to
+	 * make it reachable and wrap both into a no-transform block
+	 * to avoid any assembler interference with this.
+	 */
+	asm_volatile_goto("1:\n\t"
+			  ".begin no-transform\n\t"
+			  "_j %l[l_yes]\n\t"
+			  "2:\n\t"
+			  ".end no-transform\n\t"
+			  ".pushsection __jump_table,  \"aw\"\n\t"
+			  ".word 1b, %l[l_yes], %c0\n\t"
+			  ".popsection\n\t"
+			  : :  "i" (&((char *)key)[branch]) :  : l_yes);
+
+	return false;
+l_yes:
+	return true;
+}
+
+typedef u32 jump_label_t;
+
+struct jump_entry {
+	jump_label_t code;
+	jump_label_t target;
+	jump_label_t key;
+};
+
+#endif  /* __ASSEMBLY__ */
+#endif

arch/xtensa/include/asm/processor.h

···
 #include <variant/core.h>
 
 #include <linux/compiler.h>
+#include <linux/stringify.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>
 #include <asm/regs.h>
···
 
 /* Special register access. */
 
-#define WSR(v,sr) __asm__ __volatile__ ("wsr %0,"__stringify(sr) :: "a"(v));
-#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
+#define xtensa_set_sr(x, sr) \
+	({ \
+	 unsigned int v = (unsigned int)(x); \
+	 __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: "a"(v)); \
+	 })
 
-#define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);})
-#define get_sr(sr) ({unsigned int v; RSR(v,sr); v; })
+#define xtensa_get_sr(sr) \
+	({ \
+	 unsigned int v; \
+	 __asm__ __volatile__ ("rsr %0, "__stringify(sr) : "=a"(v)); \
+	 v; \
+	 })
 
 #ifndef XCHAL_HAVE_EXTERN_REGS
 #define XCHAL_HAVE_EXTERN_REGS 0

arch/xtensa/include/asm/ptrace.h

···
  *		+-----------------------+ --------
  */
 
+#define NO_SYSCALL (-1)
+
 #ifndef __ASSEMBLY__
 
 #include <asm/coprocessor.h>
···
 # endif
 
 #define user_stack_pointer(regs) ((regs)->areg[1])
+
+static inline unsigned long regs_return_value(struct pt_regs *regs)
+{
+	return regs->areg[2];
+}
 
 #else	/* __ASSEMBLY__ */
 

arch/xtensa/include/asm/syscall.h

···
 /*
- * include/asm-xtensa/syscall.h
- *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
  * Copyright (C) 2001 - 2007 Tensilica Inc.
+ * Copyright (C) 2018 Cadence Design Systems Inc.
  */
 
-struct pt_regs;
-asmlinkage long xtensa_ptrace(long, long, long, long);
-asmlinkage long xtensa_sigreturn(struct pt_regs*);
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H
+
+#include <linux/err.h>
+#include <asm/ptrace.h>
+#include <uapi/linux/audit.h>
+
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_XTENSA;
+}
+
+typedef void (*syscall_t)(void);
+extern syscall_t sys_call_table[];
+
+static inline long syscall_get_nr(struct task_struct *task,
+				  struct pt_regs *regs)
+{
+	return regs->syscall;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+				    struct pt_regs *regs)
+{
+	/* Do nothing. */
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+				     struct pt_regs *regs)
+{
+	/* 0 if syscall succeeded, otherwise -Errorcode */
+	return IS_ERR_VALUE(regs->areg[2]) ? regs->areg[2] : 0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+					    struct pt_regs *regs)
+{
+	return regs->areg[2];
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+					    struct pt_regs *regs,
+					    int error, long val)
+{
+	regs->areg[0] = (long) error ? error : val;
+}
+
+#define SYSCALL_MAX_ARGS 6
+#define XTENSA_SYSCALL_ARGUMENT_REGS {6, 3, 4, 5, 8, 9}
+
+static inline void syscall_get_arguments(struct task_struct *task,
+					 struct pt_regs *regs,
+					 unsigned int i, unsigned int n,
+					 unsigned long *args)
+{
+	static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
+	unsigned int j;
+
+	if (n == 0)
+		return;
+
+	WARN_ON_ONCE(i + n > SYSCALL_MAX_ARGS);
+
+	for (j = 0; j < n; ++j) {
+		if (i + j < SYSCALL_MAX_ARGS)
+			args[j] = regs->areg[reg[i + j]];
+		else
+			args[j] = 0;
+	}
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+					 struct pt_regs *regs,
+					 unsigned int i, unsigned int n,
+					 const unsigned long *args)
+{
+	static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
+	unsigned int j;
+
+	if (n == 0)
+		return;
+
+	if (WARN_ON_ONCE(i + n > SYSCALL_MAX_ARGS)) {
+		if (i < SYSCALL_MAX_ARGS)
+			n = SYSCALL_MAX_ARGS - i;
+		else
+			return;
+	}
+
+	for (j = 0; j < n; ++j)
+		regs->areg[reg[i + j]] = args[j];
+}
+
 asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
 asmlinkage long xtensa_shmat(int, char __user *, int);
 asmlinkage long xtensa_fadvise64_64(int, int,
 				    unsigned long long, unsigned long long);
 
-/* Should probably move to linux/syscalls.h */
-struct pollfd;
-asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
-			     fd_set __user *exp, struct timespec __user *tsp,
-			     void __user *sig);
-asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
-			  struct timespec __user *tsp,
-			  const sigset_t __user *sigmask,
-			  size_t sigsetsize);
+#endif

arch/xtensa/include/asm/thread_info.h

···
 #ifndef _XTENSA_THREAD_INFO_H
 #define _XTENSA_THREAD_INFO_H
 
+#include <linux/stringify.h>
 #include <asm/kmem_layout.h>
 
 #define CURRENT_SHIFT KERNEL_STACK_SHIFT
···
 /*
  * thread information flags
  * - these are process state flags that various assembly files may need to access
- * - pending work-to-be-done flags are in LSW
- * - other flags in MSW
  */
 #define TIF_SYSCALL_TRACE	0	/* syscall trace active */
 #define TIF_SIGPENDING		1	/* signal pending */
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
 #define TIF_SINGLESTEP		3	/* restore singlestep on return to user mode */
+#define TIF_SYSCALL_TRACEPOINT	4	/* syscall tracepoint instrumentation */
 #define TIF_MEMDIE		5	/* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK	6	/* restore signal mask in do_signal() */
 #define TIF_NOTIFY_RESUME	7	/* callback before returning to user */
···
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
 #define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)
+#define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
 
-#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
-#define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
+#define _TIF_WORK_MASK		(_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
+				 _TIF_SYSCALL_TRACEPOINT)
 
 /*
  * Thread-synchronous status.

arch/xtensa/include/asm/timex.h

···
 #define _XTENSA_TIMEX_H
 
 #include <asm/processor.h>
-#include <linux/stringify.h>
 
 #if XCHAL_NUM_TIMERS > 0 && \
 	XTENSA_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
···
  * Register access.
  */
 
-#define WSR_CCOUNT(r)	  asm volatile ("wsr %0, ccount" :: "a" (r))
-#define RSR_CCOUNT(r)	  asm volatile ("rsr %0, ccount" : "=a" (r))
-#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(SREG_CCOMPARE)"+"__stringify(x) :: "a"(r))
-#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(SREG_CCOMPARE)"+"__stringify(x) : "=a"(r))
-
 static inline unsigned long get_ccount (void)
 {
-	unsigned long ccount;
-	RSR_CCOUNT(ccount);
-	return ccount;
+	return xtensa_get_sr(ccount);
 }
 
 static inline void set_ccount (unsigned long ccount)
 {
-	WSR_CCOUNT(ccount);
+	xtensa_set_sr(ccount, ccount);
 }
 
 static inline unsigned long get_linux_timer (void)
 {
-	unsigned ccompare;
-	RSR_CCOMPARE(LINUX_TIMER, ccompare);
-	return ccompare;
+	return xtensa_get_sr(SREG_CCOMPARE + LINUX_TIMER);
 }
 
 static inline void set_linux_timer (unsigned long ccompare)
 {
-	WSR_CCOMPARE(LINUX_TIMER, ccompare);
+	xtensa_set_sr(ccompare, SREG_CCOMPARE + LINUX_TIMER);
 }
 
 #endif	/* _XTENSA_TIMEX_H */

arch/xtensa/include/asm/traps.h

···
 	void *fixup;
 	/* For passing a parameter to fixup */
 	void *fixup_param;
-	/* For fast syscall handler */
-	unsigned long syscall_save;
 	/* Fast user exception handlers */
 	void *fast_user_handler[EXCCAUSE_N];
 	/* Fast kernel exception handlers */

arch/xtensa/include/asm/uaccess.h

···
 	"2:				\n"		\
 	"   .section  .fixup,\"ax\"	\n"		\
 	"   .align 4			\n"		\
-	"4:				\n"		\
-	"   .long  2b			\n"		\
+	"   .literal_position		\n"		\
 	"5:				\n"		\
-	"   l32r   %1, 4b		\n"		\
+	"   movi   %1, 2b		\n"		\
 	"   movi   %0, %4		\n"		\
 	"   jx     %1			\n"		\
 	"   .previous			\n"		\
···
 	"2:				\n"	\
 	"   .section  .fixup,\"ax\"	\n"	\
 	"   .align 4			\n"	\
-	"4:				\n"	\
-	"   .long  2b			\n"	\
+	"   .literal_position		\n"	\
 	"5:				\n"	\
-	"   l32r   %1, 4b		\n"	\
+	"   movi   %1, 2b		\n"	\
 	"   movi   %2, 0		\n"	\
 	"   movi   %0, %4		\n"	\
 	"   jx     %1			\n"	\

arch/xtensa/include/asm/unistd.h

···
 #define __IGNORE_vfork				/* use clone */
 #define __IGNORE_fadvise64			/* use fadvise64_64 */
 
+#define NR_syscalls				__NR_syscalls
+
 #endif /* _XTENSA_UNISTD_H */

arch/xtensa/include/uapi/asm/Kbuild

···
 # UAPI Header export list
 include include/uapi/asm-generic/Kbuild.asm
 
+generated-y += unistd_32.h
 generic-y += bitsperlong.h
 generic-y += bpf_perf_event.h
 generic-y += errno.h

arch/xtensa/include/uapi/asm/ptrace.h

···
 #ifndef _UAPI_XTENSA_PTRACE_H
 #define _UAPI_XTENSA_PTRACE_H
 
+#include <linux/types.h>
+
 /* Registers used by strace */
 
 #define REG_A_BASE	0x0000
···
 #define PTRACE_GETHBPREGS	20
 #define PTRACE_SETHBPREGS	21
 
+#ifndef __ASSEMBLY__
 
+struct user_pt_regs {
+	__u32 pc;
+	__u32 ps;
+	__u32 lbeg;
+	__u32 lend;
+	__u32 lcount;
+	__u32 sar;
+	__u32 windowstart;
+	__u32 windowbase;
+	__u32 threadptr;
+	__u32 reserved[7 + 48];
+	__u32 a[64];
+};
+
+#endif
 #endif /* _UAPI_XTENSA_PTRACE_H */

arch/xtensa/include/uapi/asm/unistd.h

···
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#if !defined(_UAPI_XTENSA_UNISTD_H) || defined(__SYSCALL)
+#ifndef _UAPI_XTENSA_UNISTD_H
 #define _UAPI_XTENSA_UNISTD_H
 
-#ifndef __SYSCALL
-# define __SYSCALL(nr,func,nargs)
-#endif
+#include <asm/unistd_32.h>
 
-#define __NR_spill				  0
-__SYSCALL(  0, sys_ni_syscall, 0)
-#define __NR_xtensa				  1
-__SYSCALL(  1, sys_ni_syscall, 0)
-#define __NR_available4				  2
-__SYSCALL(  2, sys_ni_syscall, 0)
-#define __NR_available5				  3
-__SYSCALL(  3, sys_ni_syscall, 0)
-#define __NR_available6				  4
-__SYSCALL(  4, sys_ni_syscall, 0)
-#define __NR_available7				  5
-__SYSCALL(  5, sys_ni_syscall, 0)
-#define __NR_available8				  6
-__SYSCALL(  6, sys_ni_syscall, 0)
-#define __NR_available9				  7
-__SYSCALL(  7, sys_ni_syscall, 0)
-
-/* File Operations */
-
-#define __NR_open 				  8
-__SYSCALL(  8, sys_open, 3)
-#define __NR_close 				  9
-__SYSCALL(  9, sys_close, 1)
-#define __NR_dup 				 10
-__SYSCALL( 10, sys_dup, 1)
-#define __NR_dup2 				 11
-__SYSCALL( 11, sys_dup2, 2)
-#define __NR_read 				 12
-__SYSCALL( 12, sys_read, 3)
-#define __NR_write 				 13
-__SYSCALL( 13, sys_write, 3)
-#define __NR_select 				 14
-__SYSCALL( 14, sys_select, 5)
-#define __NR_lseek 				 15
-__SYSCALL( 15, sys_lseek, 3)
-#define __NR_poll 				 16
-__SYSCALL( 16, sys_poll, 3)
-#define __NR__llseek				 17
-__SYSCALL( 17, sys_llseek, 5)
-#define __NR_epoll_wait 			 18
-__SYSCALL( 18, sys_epoll_wait, 4)
-#define __NR_epoll_ctl 				 19
-__SYSCALL( 19, sys_epoll_ctl, 4)
-#define __NR_epoll_create 			 20
-__SYSCALL( 20, sys_epoll_create, 1)
-#define __NR_creat 				 21
-__SYSCALL( 21, sys_creat, 2)
-#define __NR_truncate 				 22
-__SYSCALL( 22, sys_truncate, 2)
-#define __NR_ftruncate 				 23
-__SYSCALL( 23, sys_ftruncate, 2)
-#define __NR_readv 				 24
-__SYSCALL( 24, sys_readv, 3)
-#define __NR_writev 				 25
-__SYSCALL( 25, sys_writev, 3)
-#define __NR_fsync 				 26
-__SYSCALL( 26, sys_fsync, 1)
-#define __NR_fdatasync 				 27
-__SYSCALL( 27, sys_fdatasync, 1)
-#define __NR_truncate64 			 28
-__SYSCALL( 28, sys_truncate64, 2)
-#define __NR_ftruncate64 			 29
-__SYSCALL( 29, sys_ftruncate64, 2)
-#define __NR_pread64 				 30
-__SYSCALL( 30, sys_pread64, 6)
-#define __NR_pwrite64 				 31
-__SYSCALL( 31, sys_pwrite64, 6)
-
-#define __NR_link 				 32
-__SYSCALL( 32, sys_link, 2)
-#define __NR_rename 				 33
-__SYSCALL( 33, sys_rename, 2)
-#define __NR_symlink 				 34
-__SYSCALL( 34, sys_symlink, 2)
-#define __NR_readlink 				 35
-__SYSCALL( 35, sys_readlink, 3)
-#define __NR_mknod 				 36
-__SYSCALL( 36, sys_mknod, 3)
-#define __NR_pipe 				 37
-__SYSCALL( 37, sys_pipe, 1)
-#define __NR_unlink 				 38
-__SYSCALL( 38, sys_unlink, 1)
-#define __NR_rmdir 				 39
-__SYSCALL( 39, sys_rmdir, 1)
-
-#define __NR_mkdir 				 40
-__SYSCALL( 40, sys_mkdir, 2)
-#define __NR_chdir 				 41
-__SYSCALL( 41, sys_chdir, 1)
-#define __NR_fchdir 				 42
-__SYSCALL( 42, sys_fchdir, 1)
-#define __NR_getcwd 				 43
-__SYSCALL( 43, sys_getcwd, 2)
-
-#define __NR_chmod 				 44
-__SYSCALL( 44, sys_chmod, 2)
-#define __NR_chown 				 45
-__SYSCALL( 45, sys_chown, 3)
-#define __NR_stat 				 46
-__SYSCALL( 46, sys_newstat, 2)
-#define __NR_stat64 				 47
-__SYSCALL( 47, sys_stat64, 2)
-
-#define __NR_lchown 				 48
-__SYSCALL( 48, sys_lchown, 3)
-#define __NR_lstat 				 49
-__SYSCALL( 49, sys_newlstat, 2)
-#define __NR_lstat64 				 50
-__SYSCALL( 50, sys_lstat64, 2)
-#define __NR_available51			 51
-__SYSCALL( 51, sys_ni_syscall, 0)
-
-#define __NR_fchmod 				 52
-__SYSCALL( 52, sys_fchmod, 2)
-#define __NR_fchown 				 53
-__SYSCALL( 53, sys_fchown, 3)
-#define __NR_fstat 				 54
-__SYSCALL( 54, sys_newfstat, 2)
-#define __NR_fstat64 				 55
-__SYSCALL( 55, sys_fstat64, 2)
-
-#define __NR_flock 				 56
-__SYSCALL( 56, sys_flock, 2)
-#define __NR_access 				 57
-__SYSCALL( 57, sys_access, 2)
-#define __NR_umask 				 58
-__SYSCALL( 58, sys_umask, 1)
-#define __NR_getdents 				 59
-__SYSCALL( 59, sys_getdents, 3)
-#define __NR_getdents64 			 60
-__SYSCALL( 60, sys_getdents64, 3)
-#define __NR_fcntl64 				 61
-__SYSCALL( 61, sys_fcntl64, 3)
-#define __NR_fallocate				 62
-__SYSCALL( 62, sys_fallocate, 6)
-#define __NR_fadvise64_64 			 63
-__SYSCALL( 63, xtensa_fadvise64_64, 6)
-#define __NR_utime				 64	/* glibc 2.3.3 ?? */
-__SYSCALL( 64, sys_utime, 2)
-#define __NR_utimes 				 65
-__SYSCALL( 65, sys_utimes, 2)
-#define __NR_ioctl 				 66
-__SYSCALL( 66, sys_ioctl, 3)
-#define __NR_fcntl 				 67
-__SYSCALL( 67, sys_fcntl, 3)
-
-#define __NR_setxattr 				 68
-__SYSCALL( 68, sys_setxattr, 5)
-#define __NR_getxattr 				 69
-__SYSCALL( 69, sys_getxattr, 4)
-#define __NR_listxattr 				 70
-__SYSCALL( 70, sys_listxattr, 3)
-#define __NR_removexattr 			 71
-__SYSCALL( 71, sys_removexattr, 2)
-#define __NR_lsetxattr 				 72
-__SYSCALL( 72, sys_lsetxattr, 5)
-#define __NR_lgetxattr 				 73
-__SYSCALL( 73, sys_lgetxattr, 4)
-#define __NR_llistxattr 			 74
-__SYSCALL( 74, sys_llistxattr, 3)
-#define __NR_lremovexattr 			 75
-__SYSCALL( 75, sys_lremovexattr, 2)
-#define __NR_fsetxattr 				 76
-__SYSCALL( 76, sys_fsetxattr, 5)
-#define __NR_fgetxattr 				 77
-__SYSCALL( 77, sys_fgetxattr, 4)
-#define __NR_flistxattr 			 78
-__SYSCALL( 78, sys_flistxattr, 3)
-#define __NR_fremovexattr 			 79
-__SYSCALL( 79, sys_fremovexattr, 2)
-
-/* File Map / Shared Memory Operations */
-
-#define __NR_mmap2 				 80
-__SYSCALL( 80, sys_mmap_pgoff, 6)
-#define __NR_munmap 				 81
-__SYSCALL( 81, sys_munmap, 2)
-#define __NR_mprotect 				 82
-__SYSCALL( 82, sys_mprotect, 3)
-#define __NR_brk 				 83
-__SYSCALL( 83, sys_brk, 1)
-#define __NR_mlock 				 84
-__SYSCALL( 84, sys_mlock, 2)
-#define __NR_munlock 				 85
-__SYSCALL( 85, sys_munlock, 2)
-#define __NR_mlockall 				 86
-__SYSCALL( 86, sys_mlockall, 1)
-#define __NR_munlockall 			 87
-__SYSCALL( 87, sys_munlockall, 0)
-#define __NR_mremap 				 88
-__SYSCALL( 88, sys_mremap, 4)
-#define __NR_msync 				 89
-__SYSCALL( 89, sys_msync, 3)
-#define __NR_mincore 				 90
-__SYSCALL( 90, sys_mincore, 3)
-#define __NR_madvise 				 91
-__SYSCALL( 91, sys_madvise, 3)
-#define __NR_shmget				 92
-__SYSCALL( 92, sys_shmget, 4)
-#define __NR_shmat				 93
-__SYSCALL( 93, xtensa_shmat, 4)
-#define __NR_shmctl				 94
-__SYSCALL( 94, sys_shmctl, 4)
-#define __NR_shmdt				 95
-__SYSCALL( 95, sys_shmdt, 4)
-
-/* Socket Operations */
-
-#define __NR_socket 				 96
-__SYSCALL( 96, sys_socket, 3)
-#define __NR_setsockopt 			 97
-__SYSCALL( 97, sys_setsockopt, 5)
-#define __NR_getsockopt 			 98
-__SYSCALL( 98, sys_getsockopt, 5)
-#define __NR_shutdown 				 99
-__SYSCALL( 99, sys_shutdown, 2)
-
-#define __NR_bind 				100
-__SYSCALL(100, sys_bind, 3)
-#define __NR_connect 				101
-__SYSCALL(101, sys_connect, 3)
-#define __NR_listen 				102
-__SYSCALL(102, sys_listen, 2)
-#define __NR_accept 				103
-__SYSCALL(103, sys_accept, 3)
-
-#define __NR_getsockname 			104
-__SYSCALL(104, sys_getsockname, 3)
-#define __NR_getpeername 			105
-__SYSCALL(105, sys_getpeername, 3)
-#define __NR_sendmsg 				106
-__SYSCALL(106, sys_sendmsg, 3)
-#define __NR_recvmsg 				107
-__SYSCALL(107, sys_recvmsg, 3)
-#define __NR_send 				108
-__SYSCALL(108, sys_send, 4)
-#define __NR_recv 				109
-__SYSCALL(109, sys_recv, 4)
-#define __NR_sendto 				110
-__SYSCALL(110, sys_sendto, 6)
-#define __NR_recvfrom 				111
-__SYSCALL(111, sys_recvfrom, 6)
-
-#define __NR_socketpair 			112
-__SYSCALL(112, sys_socketpair, 4)
-#define __NR_sendfile 				113
-__SYSCALL(113, sys_sendfile, 4)
-#define __NR_sendfile64 			114
-__SYSCALL(114, sys_sendfile64, 4)
-#define __NR_sendmmsg				115
-__SYSCALL(115, sys_sendmmsg, 4)
-
-/* Process Operations */
-
-#define __NR_clone 				116
-__SYSCALL(116, sys_clone, 5)
-#define __NR_execve 				117
-__SYSCALL(117, sys_execve, 3)
-#define __NR_exit 				118
-__SYSCALL(118, sys_exit, 1)
-#define __NR_exit_group 			119
-__SYSCALL(119, sys_exit_group, 1)
-#define __NR_getpid 				120
-__SYSCALL(120, sys_getpid, 0)
-#define __NR_wait4 				121
-__SYSCALL(121, sys_wait4, 4)
-#define __NR_waitid 				122
-__SYSCALL(122, sys_waitid, 5)
-#define __NR_kill 				123
-__SYSCALL(123, sys_kill, 2)
-#define __NR_tkill 				124
-__SYSCALL(124, sys_tkill, 2)
-#define __NR_tgkill 				125
-__SYSCALL(125, sys_tgkill, 3)
-#define __NR_set_tid_address 			126
-__SYSCALL(126, sys_set_tid_address, 1)
-#define __NR_gettid 				127
-__SYSCALL(127, sys_gettid, 0)
-#define __NR_setsid 				128
-__SYSCALL(128, sys_setsid, 0)
-#define __NR_getsid 				129
-__SYSCALL(129, sys_getsid, 1)
-#define __NR_prctl 				130
-__SYSCALL(130, sys_prctl, 5)
-#define __NR_personality 			131
-__SYSCALL(131, sys_personality, 1)
-#define __NR_getpriority 			132
-__SYSCALL(132, sys_getpriority, 2)
-#define __NR_setpriority 			133
-__SYSCALL(133, sys_setpriority, 3)
-#define __NR_setitimer 				134
-__SYSCALL(134, sys_setitimer, 3)
-#define __NR_getitimer 				135
-__SYSCALL(135, sys_getitimer, 2)
-#define __NR_setuid 				136
-__SYSCALL(136, sys_setuid, 1)
-#define __NR_getuid 				137
-__SYSCALL(137, sys_getuid, 0)
-#define __NR_setgid 				138
-__SYSCALL(138, sys_setgid, 1)
-#define __NR_getgid 				139
-__SYSCALL(139, sys_getgid, 0)
-#define __NR_geteuid 				140
-__SYSCALL(140, sys_geteuid, 0)
-#define __NR_getegid 				141
-__SYSCALL(141, sys_getegid, 0)
-#define __NR_setreuid 				142
-__SYSCALL(142, sys_setreuid, 2)
-#define __NR_setregid 				143
-__SYSCALL(143, sys_setregid, 2)
-#define __NR_setresuid 				144
-__SYSCALL(144, sys_setresuid, 3)
-#define __NR_getresuid 				145
-__SYSCALL(145, sys_getresuid, 3)
-#define __NR_setresgid 				146
-__SYSCALL(146, sys_setresgid, 3)
-#define __NR_getresgid 				147
-__SYSCALL(147, sys_getresgid, 3)
-#define __NR_setpgid 				148
-__SYSCALL(148, sys_setpgid, 2)
-#define __NR_getpgid 				149
-__SYSCALL(149, sys_getpgid, 1)
-#define __NR_getppid 				150
-__SYSCALL(150, sys_getppid, 0)
-#define __NR_getpgrp				151
-__SYSCALL(151, sys_getpgrp, 0)
-
-#define __NR_reserved152 			152	/* set_thread_area */
-__SYSCALL(152, sys_ni_syscall, 0)
-#define __NR_reserved153 			153	/* get_thread_area */
-__SYSCALL(153, sys_ni_syscall, 0)
-#define __NR_times 				154
-__SYSCALL(154, sys_times, 1)
-#define __NR_acct 				155
-__SYSCALL(155, sys_acct, 1)
-#define __NR_sched_setaffinity 			156
-__SYSCALL(156, sys_sched_setaffinity, 3)
-#define __NR_sched_getaffinity 			157
-__SYSCALL(157, sys_sched_getaffinity, 3)
-#define __NR_capget 				158
-__SYSCALL(158, sys_capget, 2)
-#define __NR_capset 				159
-__SYSCALL(159, sys_capset, 2)
-#define __NR_ptrace 				160
-__SYSCALL(160, sys_ptrace, 4)
-#define __NR_semtimedop				161
-__SYSCALL(161, sys_semtimedop, 5)
-#define __NR_semget				162
-__SYSCALL(162, sys_semget, 4)
-#define __NR_semop				163
-__SYSCALL(163, sys_semop, 4)
-#define __NR_semctl				164
-__SYSCALL(164, sys_semctl, 4)
-#define __NR_available165			165
-__SYSCALL(165, sys_ni_syscall, 0)
-#define __NR_msgget				166
-__SYSCALL(166, sys_msgget, 4)
-#define __NR_msgsnd				167
-__SYSCALL(167, sys_msgsnd, 4)
-#define __NR_msgrcv				168
-__SYSCALL(168, sys_msgrcv, 4)
-#define __NR_msgctl				169
-__SYSCALL(169, sys_msgctl, 4)
-#define __NR_available170			170
-__SYSCALL(170, sys_ni_syscall, 0)
-
-/* File System */
-
-#define __NR_umount2				171
-__SYSCALL(171, sys_umount, 2)
-#define __NR_mount 				172
-__SYSCALL(172, sys_mount, 5)
-#define __NR_swapon 				173
-__SYSCALL(173, sys_swapon, 2)
-#define __NR_chroot 				174
-__SYSCALL(174, sys_chroot, 1)
-#define __NR_pivot_root 			175
-__SYSCALL(175, sys_pivot_root, 2)
-#define __NR_umount 				176
-__SYSCALL(176, sys_oldumount, 1)
 #define __ARCH_WANT_SYS_OLDUMOUNT
-#define __NR_swapoff 				177
-__SYSCALL(177, sys_swapoff, 1)
-#define __NR_sync 				178
-__SYSCALL(178, sys_sync, 0)
-#define __NR_syncfs				179
-__SYSCALL(179, sys_syncfs, 1)
-#define __NR_setfsuid 				180
-__SYSCALL(180, sys_setfsuid, 1)
-#define __NR_setfsgid 				181
-__SYSCALL(181, sys_setfsgid, 1)
-#define __NR_sysfs 				182
-__SYSCALL(182, sys_sysfs, 3)
-#define __NR_ustat 				183
-__SYSCALL(183, sys_ustat, 2)
-#define __NR_statfs 				184
-__SYSCALL(184, sys_statfs, 2)
-#define __NR_fstatfs 				185
-__SYSCALL(185, sys_fstatfs, 2)
-#define __NR_statfs64 				186
-__SYSCALL(186, sys_statfs64, 3)
-#define __NR_fstatfs64 				187
-__SYSCALL(187, sys_fstatfs64, 3)
-
-/* System */
-
-#define __NR_setrlimit 				188
-__SYSCALL(188, sys_setrlimit, 2)
-#define __NR_getrlimit 				189
-__SYSCALL(189, sys_getrlimit, 2)
-#define __NR_getrusage 				190
-__SYSCALL(190, sys_getrusage, 2)
-#define __NR_futex				191
-__SYSCALL(191, sys_futex, 5)
-#define __NR_gettimeofday 			192
-__SYSCALL(192, sys_gettimeofday, 2)
-#define __NR_settimeofday 			193
-__SYSCALL(193, sys_settimeofday, 2)
-#define __NR_adjtimex 				194
-__SYSCALL(194, sys_adjtimex, 1)
-#define __NR_nanosleep	 			195
-__SYSCALL(195, sys_nanosleep, 2)
-#define __NR_getgroups 				196
-__SYSCALL(196, sys_getgroups, 2)
-#define __NR_setgroups 				197
-__SYSCALL(197, sys_setgroups, 2)
-#define __NR_sethostname 			198
-__SYSCALL(198, sys_sethostname, 2)
-#define __NR_setdomainname 			199
-__SYSCALL(199, sys_setdomainname, 2)
-#define __NR_syslog 				200
-__SYSCALL(200, sys_syslog, 3)
-#define __NR_vhangup 				201
-__SYSCALL(201, sys_vhangup, 0)
-#define __NR_uselib 				202
-__SYSCALL(202, sys_uselib, 1)
-#define __NR_reboot 				203
-__SYSCALL(203, sys_reboot, 3)
-#define __NR_quotactl 				204
-__SYSCALL(204, sys_quotactl, 4)
-#define __NR_nfsservctl 			205
-__SYSCALL(205, sys_ni_syscall, 0)			/* old nfsservctl */
-#define __NR__sysctl 				206
-__SYSCALL(206, sys_sysctl, 1)
-#define __NR_bdflush 				207
-__SYSCALL(207, sys_bdflush, 2)
-#define __NR_uname 				208
-__SYSCALL(208, sys_newuname, 1)
-#define __NR_sysinfo 				209
-__SYSCALL(209, sys_sysinfo, 1)
-#define __NR_init_module 			210
-__SYSCALL(210, sys_init_module, 2)
-#define __NR_delete_module 			211
-__SYSCALL(211, sys_delete_module, 1)
-
-#define __NR_sched_setparam 			212
-__SYSCALL(212, sys_sched_setparam, 2)
-#define __NR_sched_getparam 			213
-__SYSCALL(213, sys_sched_getparam, 2)
-#define __NR_sched_setscheduler 		214
-__SYSCALL(214, sys_sched_setscheduler, 3)
-#define __NR_sched_getscheduler 		215
-__SYSCALL(215, sys_sched_getscheduler, 1)
-#define __NR_sched_get_priority_max 		216
-__SYSCALL(216, sys_sched_get_priority_max, 1)
-#define __NR_sched_get_priority_min 		217
-__SYSCALL(217, sys_sched_get_priority_min, 1)
-#define __NR_sched_rr_get_interval 		218
-__SYSCALL(218, sys_sched_rr_get_interval, 2)
-#define __NR_sched_yield 			219
-__SYSCALL(219, sys_sched_yield, 0)
-#define __NR_available222 			222
-__SYSCALL(222, sys_ni_syscall, 0)
-
-/* Signal Handling */
-
-#define __NR_restart_syscall 			223
-__SYSCALL(223, sys_restart_syscall, 0)
-#define __NR_sigaltstack 			224
-__SYSCALL(224, sys_sigaltstack, 2)
-#define __NR_rt_sigreturn 			225
-__SYSCALL(225, xtensa_rt_sigreturn, 1)
-#define __NR_rt_sigaction 			226
-__SYSCALL(226, sys_rt_sigaction, 4)
-#define __NR_rt_sigprocmask 			227
-__SYSCALL(227, sys_rt_sigprocmask, 4)
-#define __NR_rt_sigpending 			228
-__SYSCALL(228, sys_rt_sigpending, 2)
-#define __NR_rt_sigtimedwait 			229
-__SYSCALL(229, sys_rt_sigtimedwait, 4)
-#define __NR_rt_sigqueueinfo 			230
-__SYSCALL(230, sys_rt_sigqueueinfo, 3)
-#define __NR_rt_sigsuspend 			231
-__SYSCALL(231, sys_rt_sigsuspend, 2)
-
-/* Message */
-
-#define __NR_mq_open 				232
-__SYSCALL(232, sys_mq_open, 4)
-#define __NR_mq_unlink 				233
-__SYSCALL(233, sys_mq_unlink, 1)
-#define __NR_mq_timedsend 			234
-__SYSCALL(234, sys_mq_timedsend, 5)
-#define __NR_mq_timedreceive 			235
-__SYSCALL(235, sys_mq_timedreceive, 5)
-#define __NR_mq_notify 				236
-__SYSCALL(236, sys_mq_notify, 2)
-#define __NR_mq_getsetattr 			237
-__SYSCALL(237, sys_mq_getsetattr, 3)
-#define __NR_available238			238
-__SYSCALL(238, sys_ni_syscall, 0)
-
-/* IO */
-
-#define __NR_io_setup 				239
-__SYSCALL(239, sys_io_setup, 2)
-#define __NR_io_destroy 			240
-__SYSCALL(240, sys_io_destroy, 1)
-#define __NR_io_submit 				241
-__SYSCALL(241, sys_io_submit, 3)
-#define __NR_io_getevents 			242
-__SYSCALL(242, sys_io_getevents, 5)
-#define __NR_io_cancel 				243
-__SYSCALL(243, sys_io_cancel, 3)
-#define __NR_clock_settime 			244
-__SYSCALL(244, sys_clock_settime, 2)
-#define __NR_clock_gettime 			245
-__SYSCALL(245, sys_clock_gettime, 2)
-#define __NR_clock_getres 			246
-__SYSCALL(246, sys_clock_getres, 2)
-#define __NR_clock_nanosleep 			247
-__SYSCALL(247, sys_clock_nanosleep, 4)
-
-/* Timer */
-
-#define __NR_timer_create 			248
-__SYSCALL(248, sys_timer_create, 3)
-#define __NR_timer_delete 			249
-__SYSCALL(249, sys_timer_delete, 1)
-#define __NR_timer_settime 			250
-__SYSCALL(250, sys_timer_settime, 4)
-#define __NR_timer_gettime 			251
-__SYSCALL(251, sys_timer_gettime, 2)
-#define __NR_timer_getoverrun 			252
-__SYSCALL(252, sys_timer_getoverrun, 1)
-
-/* System */
-
-#define __NR_reserved253			253
-__SYSCALL(253, sys_ni_syscall, 0)
-#define __NR_lookup_dcookie 			254
-__SYSCALL(254, sys_lookup_dcookie, 4)
-#define __NR_available255			255
-__SYSCALL(255, sys_ni_syscall, 0)
-#define __NR_add_key 				256
-__SYSCALL(256, sys_add_key, 5)
-#define __NR_request_key 			257
-__SYSCALL(257, sys_request_key, 5)
-#define __NR_keyctl 				258
-__SYSCALL(258, sys_keyctl, 5)
-#define __NR_available259			259
-__SYSCALL(259, sys_ni_syscall, 0)
-
-
-#define __NR_readahead				260
-__SYSCALL(260, sys_readahead, 5)
-#define __NR_remap_file_pages			261
-__SYSCALL(261, sys_remap_file_pages, 5)
-#define __NR_migrate_pages			262
-__SYSCALL(262, sys_migrate_pages, 0)
-#define __NR_mbind				263
-__SYSCALL(263, sys_mbind, 6)
-#define __NR_get_mempolicy			264
-__SYSCALL(264, sys_get_mempolicy, 5)
-#define __NR_set_mempolicy			265
-__SYSCALL(265, sys_set_mempolicy, 3)
-#define __NR_unshare				266
-__SYSCALL(266, sys_unshare, 1)
-#define __NR_move_pages				267
-__SYSCALL(267, sys_move_pages, 0)
-#define __NR_splice				268
-__SYSCALL(268, sys_splice, 0)
-#define __NR_tee				269
-__SYSCALL(269, sys_tee, 0)
-#define __NR_vmsplice				270
-__SYSCALL(270, sys_vmsplice, 0)
-#define __NR_available271			271
-__SYSCALL(271, sys_ni_syscall, 0)
-
-#define __NR_pselect6				272
-__SYSCALL(272, sys_pselect6, 0)
-#define __NR_ppoll				273
-__SYSCALL(273, sys_ppoll, 0)
-#define __NR_epoll_pwait			274
-__SYSCALL(274, sys_epoll_pwait, 0)
-#define __NR_epoll_create1		275
-__SYSCALL(275, sys_epoll_create1, 1)
-
-#define __NR_inotify_init			276
-__SYSCALL(276, sys_inotify_init, 0)
-#define __NR_inotify_add_watch			277
-__SYSCALL(277, sys_inotify_add_watch, 3)
-#define __NR_inotify_rm_watch			278
-__SYSCALL(278, sys_inotify_rm_watch, 2)
-#define __NR_inotify_init1			279
-__SYSCALL(279, sys_inotify_init1, 1)
-
-#define __NR_getcpu				280
-__SYSCALL(280, sys_getcpu, 0)
-#define __NR_kexec_load				281
-__SYSCALL(281, sys_ni_syscall, 0)
-
-#define __NR_ioprio_set				282
-__SYSCALL(282, sys_ioprio_set, 2)
-#define __NR_ioprio_get				283
-__SYSCALL(283, sys_ioprio_get, 3)
-
-#define __NR_set_robust_list			284
-__SYSCALL(284, sys_set_robust_list, 3)
-#define __NR_get_robust_list			285
-__SYSCALL(285, sys_get_robust_list, 3)
-#define __NR_available286			286
-__SYSCALL(286, sys_ni_syscall, 0)
-#define __NR_available287			287
-__SYSCALL(287, sys_ni_syscall, 0)
-
-/* Relative File Operations */
-
-#define __NR_openat				288
-__SYSCALL(288, sys_openat, 4)
-#define __NR_mkdirat				289
-__SYSCALL(289, sys_mkdirat, 3)
-#define __NR_mknodat				290
-__SYSCALL(290, sys_mknodat, 4)
-#define __NR_unlinkat				291
-__SYSCALL(291, sys_unlinkat, 3)
-#define __NR_renameat				292
-__SYSCALL(292, sys_renameat, 4)
-#define __NR_linkat				293
-__SYSCALL(293, sys_linkat, 5)
-#define __NR_symlinkat				294
-__SYSCALL(294, sys_symlinkat, 3)
-#define __NR_readlinkat				295
-__SYSCALL(295, sys_readlinkat, 4)
-#define __NR_utimensat				296
-__SYSCALL(296, sys_utimensat, 0)
-#define __NR_fchownat				297
-__SYSCALL(297, sys_fchownat, 5)
-#define __NR_futimesat				298
-__SYSCALL(298, sys_futimesat, 4)
-#define __NR_fstatat64				299
-__SYSCALL(299, sys_fstatat64, 0)
-#define __NR_fchmodat				300
-__SYSCALL(300, sys_fchmodat, 4)
-#define __NR_faccessat				301
-__SYSCALL(301, sys_faccessat, 4)
-#define __NR_available302			302
-__SYSCALL(302, sys_ni_syscall, 0)
-#define __NR_available303			303
-__SYSCALL(303, sys_ni_syscall, 0)
-
-#define __NR_signalfd				304
-__SYSCALL(304, sys_signalfd, 3)
-/*  305 was __NR_timerfd  */
-__SYSCALL(305, sys_ni_syscall, 0)
-#define __NR_eventfd				306
-__SYSCALL(306, sys_eventfd, 1)
-#define __NR_recvmmsg				307
-__SYSCALL(307, sys_recvmmsg, 5)
-
-#define __NR_setns				308
-__SYSCALL(308, sys_setns, 2)
-#define __NR_signalfd4				309
-__SYSCALL(309, sys_signalfd4, 4)
-#define __NR_dup3				310
-__SYSCALL(310, sys_dup3, 3)
-#define __NR_pipe2				311
-__SYSCALL(311, sys_pipe2, 2)
-
-#define __NR_timerfd_create			312
-__SYSCALL(312, sys_timerfd_create, 2)
-#define __NR_timerfd_settime			313
-__SYSCALL(313, sys_timerfd_settime, 4)
-#define __NR_timerfd_gettime			314
-__SYSCALL(314, sys_timerfd_gettime, 2)
-#define __NR_available315			315
-__SYSCALL(315, sys_ni_syscall, 0)
-
-#define __NR_eventfd2				316
-__SYSCALL(316, sys_eventfd2, 2)
-#define __NR_preadv				317
-__SYSCALL(317, sys_preadv, 5)
-#define __NR_pwritev				318
-__SYSCALL(318, sys_pwritev, 5)
-#define __NR_available319			319
-__SYSCALL(319, sys_ni_syscall, 0)
-
-#define __NR_fanotify_init			320
-__SYSCALL(320, sys_fanotify_init, 2)
-#define __NR_fanotify_mark			321
-__SYSCALL(321, sys_fanotify_mark, 6)
-#define __NR_process_vm_readv			322
-__SYSCALL(322, sys_process_vm_readv, 6)
-#define __NR_process_vm_writev			323
-__SYSCALL(323, sys_process_vm_writev, 6)
-
-#define __NR_name_to_handle_at			324
-__SYSCALL(324, sys_name_to_handle_at, 5)
-#define __NR_open_by_handle_at			325
-__SYSCALL(325, sys_open_by_handle_at, 3)
-#define __NR_sync_file_range2			326
-__SYSCALL(326, sys_sync_file_range2, 6)
-#define __NR_perf_event_open			327
-__SYSCALL(327, sys_perf_event_open, 5)
-
-#define __NR_rt_tgsigqueueinfo			328
-__SYSCALL(328, sys_rt_tgsigqueueinfo, 4)
-#define __NR_clock_adjtime			329
-__SYSCALL(329, sys_clock_adjtime, 2)
-#define __NR_prlimit64				330
-__SYSCALL(330, sys_prlimit64, 4)
-#define __NR_kcmp				331
-__SYSCALL(331, sys_kcmp, 5)
-
-#define __NR_finit_module			332
-__SYSCALL(332, sys_finit_module, 3)
-
-#define __NR_accept4				333
-__SYSCALL(333, sys_accept4, 4)
-
-#define __NR_sched_setattr			334
-__SYSCALL(334, sys_sched_setattr, 2)
-#define __NR_sched_getattr			335
-__SYSCALL(335, sys_sched_getattr, 3)
-
-#define __NR_renameat2				336
-__SYSCALL(336, sys_renameat2, 5)
-
-#define __NR_seccomp				337
-__SYSCALL(337, sys_seccomp, 3)
-#define __NR_getrandom				338
-__SYSCALL(338, sys_getrandom, 3)
-#define __NR_memfd_create			339
-__SYSCALL(339, sys_memfd_create, 2)
-#define __NR_bpf				340
-__SYSCALL(340, sys_bpf, 3)
-#define __NR_execveat				341
-__SYSCALL(341, sys_execveat, 5)
-
-#define __NR_userfaultfd			342
-__SYSCALL(342, sys_userfaultfd, 1)
-#define __NR_membarrier				343
-__SYSCALL(343, sys_membarrier, 2)
-#define __NR_mlock2				344
-__SYSCALL(344, sys_mlock2, 3)
-#define __NR_copy_file_range			345
-__SYSCALL(345, sys_copy_file_range, 6)
-#define __NR_preadv2				346
-__SYSCALL(346, sys_preadv2, 6)
-#define __NR_pwritev2				347
-__SYSCALL(347, sys_pwritev2, 6)
-
-#define __NR_pkey_mprotect			348
-__SYSCALL(348, sys_pkey_mprotect, 4)
-#define __NR_pkey_alloc				349
-__SYSCALL(349, sys_pkey_alloc, 2)
-#define __NR_pkey_free				350
-__SYSCALL(350, sys_pkey_free, 1)
-
-#define __NR_statx				351
-__SYSCALL(351, sys_statx, 5)
-
-#define __NR_syscall_count			352
 
 /*
  * sysxtensa syscall handler
···
 #define SYS_XTENSA_ATOMIC_EXG_ADD         2     /* exchange memory and add */
 #define SYS_XTENSA_ATOMIC_ADD             3     /* add to memory */
 #define SYS_XTENSA_ATOMIC_CMP_SWP         4     /* compare and swap */
-
 #define SYS_XTENSA_COUNT                  5     /* count */
-
-#undef __SYSCALL
 
 #endif /* _UAPI_XTENSA_UNISTD_H */

arch/xtensa/kernel/Makefile

···
 obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o
 obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
 obj-$(CONFIG_S32C1I_SELFTEST) += s32c1i_selftest.o
+obj-$(CONFIG_JUMP_LABEL) += jump_label.o
 
 # In the Xtensa architecture, assembly generates literals which must always
 # precede the L32R instruction with a relative offset less than 256 kB.

arch/xtensa/kernel/asm-offsets.c

···
 	DEFINE(EXC_TABLE_DOUBLE_SAVE, offsetof(struct exc_table, double_save));
 	DEFINE(EXC_TABLE_FIXUP, offsetof(struct exc_table, fixup));
 	DEFINE(EXC_TABLE_PARAM, offsetof(struct exc_table, fixup_param));
-	DEFINE(EXC_TABLE_SYSCALL_SAVE,
-	       offsetof(struct exc_table, syscall_save));
 	DEFINE(EXC_TABLE_FAST_USER,
 	       offsetof(struct exc_table, fast_user_handler));
 	DEFINE(EXC_TABLE_FAST_KERNEL,

arch/xtensa/kernel/coprocessor.S

···
  */
 
 #define SAVE_CP_REGS(x)							\
-	.align 4;							\
-	.Lsave_cp_regs_cp##x:						\
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
+		.align 4;						\
+	.Lsave_cp_regs_cp##x:						\
 		xchal_cp##x##_store a2 a4 a5 a6 a7;			\
-	.endif;								\
-	jx	a0
+		jx	a0;						\
+	.endif
 
 #define SAVE_CP_REGS_TAB(x)						\
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
-		.long .Lsave_cp_regs_cp##x - .Lsave_cp_regs_jump_table;	\
+		.long .Lsave_cp_regs_cp##x;				\
 	.else;								\
 		.long 0;						\
 	.endif;								\
···
 
 
 #define LOAD_CP_REGS(x)							\
-	.align 4;							\
-	.Lload_cp_regs_cp##x:						\
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
+		.align 4;						\
+	.Lload_cp_regs_cp##x:						\
 		xchal_cp##x##_load a2 a4 a5 a6 a7;			\
-	.endif;								\
-	jx	a0
+		jx	a0;						\
+	.endif
 
 #define LOAD_CP_REGS_TAB(x)						\
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
-		.long .Lload_cp_regs_cp##x - .Lload_cp_regs_jump_table; \
+		.long .Lload_cp_regs_cp##x;				\
 	.else;								\
 		.long 0;						\
 	.endif;								\
···
 	LOAD_CP_REGS(6)
 	LOAD_CP_REGS(7)
 
+	.section ".rodata", "a"
 	.align 4
 .Lsave_cp_regs_jump_table:
 	SAVE_CP_REGS_TAB(0)
···
 	LOAD_CP_REGS_TAB(6)
 	LOAD_CP_REGS_TAB(7)
 
-/*
- * coprocessor_save(buffer, index) 
- *                    a2      a3
- * coprocessor_load(buffer, index)
- *                    a2      a3
- *
- * Save or load coprocessor registers for coprocessor 'index'. 
- * The register values are saved to or loaded from them 'buffer' address.
- *
- * Note that these functions don't update the coprocessor_owner information!
- *
- */
-
-ENTRY(coprocessor_save)
-
-	entry	a1, 32
-	s32i	a0, a1, 0
-	movi	a0, .Lsave_cp_regs_jump_table
-	addx8	a3, a3, a0
-	l32i	a3, a3, 0
-	beqz	a3, 1f
-	add	a0, a0, a3
-	callx0	a0
-1:	l32i	a0, a1, 0
-	retw
-
-ENDPROC(coprocessor_save)
-
-ENTRY(coprocessor_load)
-
-	entry	a1, 32
-	s32i	a0, a1, 0
-	movi	a0, .Lload_cp_regs_jump_table
-	addx4	a3, a3, a0
-	l32i	a3, a3, 0
-	beqz	a3, 1f
-	add	a0, a0, a3
-	callx0	a0
-1:	l32i	a0, a1, 0
-	retw
-
-ENDPROC(coprocessor_load)
+	.previous
 
 /*
- * coprocessor_flush(struct task_info*, index)
+ * coprocessor_flush(struct thread_info*, index)
  *                             a2        a3
- * coprocessor_restore(struct task_info*, index)
- *                              a2         a3
  *
- * Save or load coprocessor registers for coprocessor 'index'. 
+ * Save coprocessor registers for coprocessor 'index'.
  * The register values are saved to or loaded from the coprocessor area 
  * inside the task_info structure.
  *
- * Note that these functions don't update the coprocessor_owner information!
+ * Note that this function doesn't update the coprocessor_owner information!
  *
  */
-
 
 ENTRY(coprocessor_flush)
 
···
 	l32i	a3, a3, 0
 	add	a2, a2, a4
 	beqz	a3, 1f
-	add	a0, a0, a3
-	callx0	a0
+	callx0	a3
 1:	l32i	a0, a1, 0
 	retw
 
 ENDPROC(coprocessor_flush)
-
-ENTRY(coprocessor_restore)
-	entry	a1, 32
-	s32i	a0, a1, 0
-	movi	a0, .Lload_cp_regs_jump_table
-	addx4	a3, a3, a0
-	l32i	a4, a3, 4
-	l32i	a3, a3, 0
-	add	a2, a2, a4
-	beqz	a3, 1f
-	add	a0, a0, a3
-	callx0	a0
-1:	l32i	a0, a1, 0
-	retw
-
-ENDPROC(coprocessor_restore)
 
 /*
  * Entry condition:
···
 	movi	a0, 2f			# a0: 'return' address
 	addx8	a3, a3, a5		# a3: coprocessor number
 	l32i	a2, a3, 4		# a2: xtregs offset
-	l32i	a3, a3, 0		# a3: jump offset
+	l32i	a3, a3, 0		# a3: jump address
 	add	a2, a2, a4
-	add	a4, a3, a5		# a4: address of save routine
-	jx	a4
+	jx	a3
 
 	/* Note that only a0 and a1 were preserved. */
 
···
 	movi	a0, 1f
 	addx8	a3, a3, a5
 	l32i	a2, a3, 4		# a2: xtregs offset
-	l32i	a3, a3, 0		# a3: jump offset
+	l32i	a3, a3, 0		# a3: jump address
 	add	a2, a2, a4
-	add	a4, a3, a5
-	jx	a4
+	jx	a3
 
 	/* Restore all registers and return from exception handler. */
 

arch/xtensa/kernel/entry.S

···
 	s32i	a2, a1, PT_DEBUGCAUSE
 	s32i	a3, a1, PT_PC
 
-	movi	a2, -1
+	movi	a2, NO_SYSCALL
 	rsr	a3, excvaddr
 	s32i	a2, a1, PT_SYSCALL
 	movi	a2, 0
···
  *   depc:	a2, original value saved on stack (PT_DEPC)
  *   excsave_1:	dispatch table
  */
-
-ENTRY(fast_syscall_kernel)
-
-	/* Skip syscall. */
-
-	rsr	a0, epc1
-	addi	a0, a0, 3
-	wsr	a0, epc1
-
-	l32i	a0, a2, PT_DEPC
-	bgeui	a0, VALID_DOUBLE_EXCEPTION_ADDRESS, fast_syscall_unrecoverable
-
-	rsr	a0, depc			# get syscall-nr
-	_beqz	a0, fast_syscall_spill_registers
-	_beqi	a0, __NR_xtensa, fast_syscall_xtensa
-
-	j	kernel_exception
-
-ENDPROC(fast_syscall_kernel)
 
 ENTRY(fast_syscall_user)
 
···
 
 	/* regs->syscall = regs->areg[2] */
 
-	l32i	a3, a2, PT_AREG2
-	mov	a6, a2
-	s32i	a3, a2, PT_SYSCALL
-	call4	do_syscall_trace_enter
-	mov	a3, a6
+	l32i	a7, a2, PT_AREG2
+	s32i	a7, a2, PT_SYSCALL
 
+	GET_THREAD_INFO(a4, a1)
+	l32i	a3, a4, TI_FLAGS
+	movi	a4, _TIF_WORK_MASK
+	and	a3, a3, a4
+	beqz	a3, 1f
+
+	mov	a6, a2
+	call4	do_syscall_trace_enter
+	l32i	a7, a2, PT_SYSCALL
+
+1:
 	/* syscall = sys_call_table[syscall_nr] */
 
 	movi	a4, sys_call_table
-	movi	a5, __NR_syscall_count
+	movi	a5, __NR_syscalls
 	movi	a6, -ENOSYS
-	bgeu	a3, a5, 1f
+	bgeu	a7, a5, 1f
 
-	addx4	a4, a3, a4
+	addx4	a4, a7, a4
 	l32i	a4, a4, 0
 	movi	a5, sys_ni_syscall;
 	beq	a4, a5, 1f
···
 1:	/* regs->areg[2] = return_value */
 
 	s32i	a6, a2, PT_AREG2
+	bnez	a3, 1f
+	retw
+
+1:
 	mov	a6, a2
 	call4	do_syscall_trace_leave
 	retw

arch/xtensa/kernel/head.S

···
 
 	.align	4
 	.literal_position
-.Lstartup:
-	.word	_startup
-
-	.align	4
 _SetupOCD:
 	/*
 	 * Initialize WB, WS, and clear PS.EXCM (to allow loop instructions).
···
 1:
 #endif
 #endif
-	.end	no-absolute-literals
 
-	l32r	a0, .Lstartup
+	movi	a0, _startup
 	jx	a0
 
 ENDPROC(_start)
+	.end	no-absolute-literals
 
 	__REF
 	.literal_position

arch/xtensa/kernel/hw_breakpoint.c

···
 	switch (sr) {
 #if XCHAL_NUM_IBREAK > 0
 	case SREG_IBREAKA + 0:
-		WSR(v, SREG_IBREAKA + 0);
+		xtensa_set_sr(v, SREG_IBREAKA + 0);
 		break;
 #endif
 #if XCHAL_NUM_IBREAK > 1
 	case SREG_IBREAKA + 1:
-		WSR(v, SREG_IBREAKA + 1);
+		xtensa_set_sr(v, SREG_IBREAKA + 1);
 		break;
 #endif
 
 #if XCHAL_NUM_DBREAK > 0
 	case SREG_DBREAKA + 0:
-		WSR(v, SREG_DBREAKA + 0);
+		xtensa_set_sr(v, SREG_DBREAKA + 0);
 		break;
 	case SREG_DBREAKC + 0:
-		WSR(v, SREG_DBREAKC + 0);
+		xtensa_set_sr(v, SREG_DBREAKC + 0);
 		break;
 #endif
 #if XCHAL_NUM_DBREAK > 1
 	case SREG_DBREAKA + 1:
-		WSR(v, SREG_DBREAKA + 1);
+		xtensa_set_sr(v, SREG_DBREAKA + 1);
 		break;
 
 	case SREG_DBREAKC + 1:
-		WSR(v, SREG_DBREAKC + 1);
+		xtensa_set_sr(v, SREG_DBREAKC + 1);
 		break;
 #endif
 	}
···
 	unsigned long ibreakenable;
 
 	xtensa_wsr(info->address, SREG_IBREAKA + reg);
-	RSR(ibreakenable, SREG_IBREAKENABLE);
-	WSR(ibreakenable | (1 << reg), SREG_IBREAKENABLE);
+	ibreakenable = xtensa_get_sr(SREG_IBREAKENABLE);
+	xtensa_set_sr(ibreakenable | (1 << reg), SREG_IBREAKENABLE);
 }
 
 static void set_dbreak_regs(int reg, struct perf_event *bp)
···
 		/* Breakpoint */
 		i = free_slot(this_cpu_ptr(bp_on_reg), XCHAL_NUM_IBREAK, bp);
 		if (i >= 0) {
-			RSR(ibreakenable, SREG_IBREAKENABLE);
-			WSR(ibreakenable & ~(1 << i), SREG_IBREAKENABLE);
+			ibreakenable = xtensa_get_sr(SREG_IBREAKENABLE);
+			xtensa_set_sr(ibreakenable & ~(1 << i),
+				      SREG_IBREAKENABLE);
 		}
 	} else {
 		/* Watchpoint */

arch/xtensa/kernel/jump_label.c

···
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Cadence Design Systems Inc.
+
+#include <linux/cpu.h>
+#include <linux/jump_label.h>
+#include <linux/kernel.h>
+#include <linux/memory.h>
+#include <linux/stop_machine.h>
+#include <linux/types.h>
+
+#include <asm/cacheflush.h>
+
+#ifdef HAVE_JUMP_LABEL
+
+#define J_OFFSET_MASK 0x0003ffff
+#define J_SIGN_MASK (~(J_OFFSET_MASK >> 1))
+
+#if defined(__XTENSA_EL__)
+#define J_INSN 0x6
+#define NOP_INSN 0x0020f0
+#elif defined(__XTENSA_EB__)
+#define J_INSN 0x60000000
+#define NOP_INSN 0x0f020000
+#else
+#error Unsupported endianness.
+#endif
+
+struct patch {
+	atomic_t cpu_count;
+	unsigned long addr;
+	size_t sz;
+	const void *data;
+};
+
+static void local_patch_text(unsigned long addr, const void *data, size_t sz)
+{
+	memcpy((void *)addr, data, sz);
+	local_flush_icache_range(addr, addr + sz);
+}
+
+static int patch_text_stop_machine(void *data)
+{
+	struct patch *patch = data;
+
+	if (atomic_inc_return(&patch->cpu_count) == 1) {
+		local_patch_text(patch->addr, patch->data, patch->sz);
+		atomic_inc(&patch->cpu_count);
+	} else {
+		while (atomic_read(&patch->cpu_count) <= num_online_cpus())
+			cpu_relax();
+		__invalidate_icache_range(patch->addr, patch->sz);
+	}
+	return 0;
+}
+
+static void patch_text(unsigned long addr, const void *data, size_t sz)
+{
+	if (IS_ENABLED(CONFIG_SMP)) {
+		struct patch patch = {
+			.cpu_count = ATOMIC_INIT(0),
+			.addr = addr,
+			.sz = sz,
+			.data = data,
+		};
+		stop_machine_cpuslocked(patch_text_stop_machine,
+					&patch, NULL);
+	} else {
+		unsigned long flags;
+
+		local_irq_save(flags);
+		local_patch_text(addr, data, sz);
+		local_irq_restore(flags);
+	}
+}
+
+void arch_jump_label_transform(struct jump_entry *e,
+			       enum jump_label_type type)
+{
+	u32 d = (jump_entry_target(e) - (jump_entry_code(e) + 4));
+	u32 insn;
+
+	/* Jump only works within 128K of the J instruction. */
+	BUG_ON(!((d & J_SIGN_MASK) == 0 ||
+		 (d & J_SIGN_MASK) == J_SIGN_MASK));
+
+	if (type == JUMP_LABEL_JMP) {
+#if defined(__XTENSA_EL__)
+		insn = ((d & J_OFFSET_MASK) << 6) | J_INSN;
+#elif defined(__XTENSA_EB__)
+		insn = ((d & J_OFFSET_MASK) << 8) | J_INSN;
+#endif
+	} else {
+		insn = NOP_INSN;
+	}
+
+	patch_text(jump_entry_code(e), &insn, JUMP_LABEL_NOP_SIZE);
+}
+
+#endif /* HAVE_JUMP_LABEL */

arch/xtensa/kernel/process.c

···
 	}
 
 	ti->cpenable = cpenable;
-	coprocessor_clear_cpenable();
+	if (ti == current_thread_info())
+		xtensa_set_sr(0, cpenable);
 
 	preempt_enable();
 }
···
 
 	preempt_disable();
 
-	RSR_CPENABLE(old_cpenable);
+	old_cpenable = xtensa_get_sr(cpenable);
 	cpenable = ti->cpenable;
-	WSR_CPENABLE(cpenable);
+	xtensa_set_sr(cpenable, cpenable);
 
 	for (i = 0; i < XCHAL_CP_MAX; i++) {
 		if ((cpenable & 1) != 0 && coprocessor_owner[i] == ti)
 			coprocessor_flush(ti, i);
 		cpenable >>= 1;
 	}
-	WSR_CPENABLE(old_cpenable);
+	xtensa_set_sr(old_cpenable, cpenable);
 
 	preempt_enable();
 }
···
 		pc = MAKE_PC_FROM_RA(*(unsigned long*)sp - 4, sp);
 		sp = *(unsigned long *)sp - 3;
 	} while (count++ < 16);
-	return 0;
-}
-
-/*
- * xtensa_gregset_t and 'struct pt_regs' are vastly different formats
- * of processor registers.  Besides different ordering,
- * xtensa_gregset_t contains non-live register information that
- * 'struct pt_regs' does not.  Exception handling (primarily) uses
- * 'struct pt_regs'.  Core files and ptrace use xtensa_gregset_t.
- *
- */
-
-void xtensa_elf_core_copy_regs (xtensa_gregset_t *elfregs, struct pt_regs *regs)
-{
-	unsigned long wb, ws, wm;
-	int live, last;
-
-	wb = regs->windowbase;
-	ws = regs->windowstart;
-	wm = regs->wmask;
-	ws = ((ws >> wb) | (ws << (WSBITS - wb))) & ((1 << WSBITS) - 1);
-
-	/* Don't leak any random bits. */
-
-	memset(elfregs, 0, sizeof(*elfregs));
-
-	/* Note:  PS.EXCM is not set while user task is running; its
-	 * being set in regs->ps is for exception handling convenience.
-	 */
-
-	elfregs->pc		= regs->pc;
-	elfregs->ps		= (regs->ps & ~(1 << PS_EXCM_BIT));
-	elfregs->lbeg		= regs->lbeg;
-	elfregs->lend		= regs->lend;
-	elfregs->lcount		= regs->lcount;
-	elfregs->sar		= regs->sar;
-	elfregs->windowstart	= ws;
-
-	live = (wm & 2) ? 4 : (wm & 4) ? 8 : (wm & 8) ? 12 : 16;
-	last = XCHAL_NUM_AREGS - (wm >> 4) * 4;
-	memcpy(elfregs->a, regs->areg, live * 4);
-	memcpy(elfregs->a + last, regs->areg + last, (wm >> 4) * 16);
-}
-
-int dump_fpu(void)
-{
 	return 0;
 }

arch/xtensa/kernel/ptrace.c

···
 #include <linux/mm.h>
 #include <linux/perf_event.h>
 #include <linux/ptrace.h>
+#include <linux/regset.h>
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
 #include <linux/security.h>
···
 #include <linux/tracehook.h>
 #include <linux/uaccess.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/syscalls.h>
+
 #include <asm/coprocessor.h>
 #include <asm/elf.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/ptrace.h>
 
+static int gpr_get(struct task_struct *target,
+		   const struct user_regset *regset,
+		   unsigned int pos, unsigned int count,
+		   void *kbuf, void __user *ubuf)
+{
+	struct pt_regs *regs = task_pt_regs(target);
+	struct user_pt_regs newregs = {
+		.pc = regs->pc,
+		.ps = regs->ps & ~(1 << PS_EXCM_BIT),
+		.lbeg = regs->lbeg,
+		.lend = regs->lend,
+		.lcount = regs->lcount,
+		.sar = regs->sar,
+		.threadptr = regs->threadptr,
+		.windowbase = regs->windowbase,
+		.windowstart = regs->windowstart,
+	};
+
+	memcpy(newregs.a,
+	       regs->areg + XCHAL_NUM_AREGS - regs->windowbase * 4,
+	       regs->windowbase * 16);
+	memcpy(newregs.a + regs->windowbase * 4,
+	       regs->areg,
+	       (WSBITS - regs->windowbase) * 16);
+
+	return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+				   &newregs, 0, -1);
+}
+
+static int gpr_set(struct task_struct *target,
+		   const struct user_regset *regset,
+		   unsigned int pos, unsigned int count,
+		   const void *kbuf, const void __user *ubuf)
+{
+	int ret;
+	struct user_pt_regs newregs = {0};
+	struct pt_regs *regs;
+	const u32 ps_mask = PS_CALLINC_MASK | PS_OWB_MASK;
+
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &newregs, 0, -1);
+	if (ret)
+		return ret;
+
+	if (newregs.windowbase >= XCHAL_NUM_AREGS / 4)
+		return -EINVAL;
+
+	regs = task_pt_regs(target);
+	regs->pc = newregs.pc;
+	regs->ps = (regs->ps & ~ps_mask) | (newregs.ps & ps_mask);
+	regs->lbeg = newregs.lbeg;
+	regs->lend = newregs.lend;
+	regs->lcount = newregs.lcount;
+	regs->sar = newregs.sar;
+	regs->threadptr = newregs.threadptr;
+
+	if (newregs.windowbase != regs->windowbase ||
+	    newregs.windowstart != regs->windowstart) {
+		u32 rotws, wmask;
+
+		rotws = (((newregs.windowstart |
+			   (newregs.windowstart << WSBITS)) >>
+			  newregs.windowbase) &
+			 ((1 << WSBITS) - 1)) & ~1;
+		wmask = ((rotws ? WSBITS + 1 - ffs(rotws) : 0) << 4) |
+			(rotws & 0xF) | 1;
+		regs->windowbase = newregs.windowbase;
+		regs->windowstart = newregs.windowstart;
+		regs->wmask = wmask;
+	}
+
+	memcpy(regs->areg + XCHAL_NUM_AREGS - newregs.windowbase * 4,
+	       newregs.a, newregs.windowbase * 16);
+	memcpy(regs->areg, newregs.a + newregs.windowbase * 4,
+	       (WSBITS - newregs.windowbase) * 16);
+
+	return 0;
+}
+
+static int tie_get(struct task_struct *target,
+		   const struct user_regset *regset,
+		   unsigned int pos, unsigned int count,
+		   void *kbuf, void __user *ubuf)
+{
+	int ret;
+	struct pt_regs *regs = task_pt_regs(target);
+	struct thread_info *ti = task_thread_info(target);
+	elf_xtregs_t *newregs = kzalloc(sizeof(elf_xtregs_t), GFP_KERNEL);
+
+	if (!newregs)
+		return -ENOMEM;
+
+	newregs->opt = regs->xtregs_opt;
+	newregs->user = ti->xtregs_user;
+
+#if XTENSA_HAVE_COPROCESSORS
+	/* Flush all coprocessor registers to memory. */
+	coprocessor_flush_all(ti);
+	newregs->cp0 = ti->xtregs_cp.cp0;
+	newregs->cp1 = ti->xtregs_cp.cp1;
+	newregs->cp2 = ti->xtregs_cp.cp2;
+	newregs->cp3 = ti->xtregs_cp.cp3;
+	newregs->cp4 = ti->xtregs_cp.cp4;
+	newregs->cp5 = ti->xtregs_cp.cp5;
+	newregs->cp6 = ti->xtregs_cp.cp6;
+	newregs->cp7 = ti->xtregs_cp.cp7;
+#endif
+	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+				  newregs, 0, -1);
+	kfree(newregs);
+	return ret;
+}
+
+static int tie_set(struct task_struct *target,
+		   const struct user_regset *regset,
+		   unsigned int pos, unsigned int count,
+		   const void *kbuf, const void __user *ubuf)
+{
+	int ret;
+	struct pt_regs *regs = task_pt_regs(target);
+	struct thread_info *ti = task_thread_info(target);
+	elf_xtregs_t *newregs = kzalloc(sizeof(elf_xtregs_t), GFP_KERNEL);
+
+	if (!newregs)
+		return -ENOMEM;
+
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+				 newregs, 0, -1);
+
+	if (ret)
+		goto exit;
+	regs->xtregs_opt = newregs->opt;
+	ti->xtregs_user = newregs->user;
+
+#if XTENSA_HAVE_COPROCESSORS
+	/* Flush all coprocessors before we overwrite them. */
+	coprocessor_flush_all(ti);
+	coprocessor_release_all(ti);
+	ti->xtregs_cp.cp0 = newregs->cp0;
+	ti->xtregs_cp.cp1 = newregs->cp1;
+	ti->xtregs_cp.cp2 = newregs->cp2;
+	ti->xtregs_cp.cp3 = newregs->cp3;
+	ti->xtregs_cp.cp4 = newregs->cp4;
+	ti->xtregs_cp.cp5 = newregs->cp5;
+	ti->xtregs_cp.cp6 = newregs->cp6;
+	ti->xtregs_cp.cp7 = newregs->cp7;
+#endif
+exit:
+	kfree(newregs);
+	return ret;
+}
+
+enum xtensa_regset {
+	REGSET_GPR,
+	REGSET_TIE,
+};
+
+static const struct user_regset xtensa_regsets[] = {
+	[REGSET_GPR] = {
+		.core_note_type = NT_PRSTATUS,
+		.n = sizeof(struct user_pt_regs) / sizeof(u32),
+		.size = sizeof(u32),
+		.align = sizeof(u32),
+		.get = gpr_get,
+		.set = gpr_set,
+	},
+	[REGSET_TIE] = {
+		.core_note_type = NT_PRFPREG,
+		.n = sizeof(elf_xtregs_t) / sizeof(u32),
+		.size = sizeof(u32),
+		.align = sizeof(u32),
+		.get = tie_get,
+		.set = tie_set,
+	},
+};
+
+static const struct user_regset_view user_xtensa_view = {
+	.name = "xtensa",
+	.e_machine = EM_XTENSA,
+	.regsets = xtensa_regsets,
+	.n = ARRAY_SIZE(xtensa_regsets)
+};
+
+const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+{
+	return &user_xtensa_view;
+}
 
 void user_enable_single_step(struct task_struct *child)
 {
···
 
 static int ptrace_getregs(struct task_struct *child, void __user *uregs)
 {
-	struct pt_regs *regs = task_pt_regs(child);
-	xtensa_gregset_t __user *gregset = uregs;
-	unsigned long wb = regs->windowbase;
-	int i;
-
-	if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t)))
-		return -EIO;
-
-	__put_user(regs->pc, &gregset->pc);
-	__put_user(regs->ps & ~(1 << PS_EXCM_BIT), &gregset->ps);
-	__put_user(regs->lbeg, &gregset->lbeg);
-	__put_user(regs->lend, &gregset->lend);
-	__put_user(regs->lcount, &gregset->lcount);
-	__put_user(regs->windowstart, &gregset->windowstart);
-	__put_user(regs->windowbase, &gregset->windowbase);
-	__put_user(regs->threadptr, &gregset->threadptr);
-
-	for (i = 0; i < XCHAL_NUM_AREGS; i++)
-		__put_user(regs->areg[i],
-			   gregset->a + ((wb * 4 + i) % XCHAL_NUM_AREGS));
-
-	return 0;
+	return copy_regset_to_user(child, &user_xtensa_view, REGSET_GPR,
+				   0, sizeof(xtensa_gregset_t), uregs);
 }
 
 static int ptrace_setregs(struct task_struct *child, void __user *uregs)
 {
-	struct pt_regs *regs = task_pt_regs(child);
-	xtensa_gregset_t *gregset = uregs;
-	const unsigned long ps_mask = PS_CALLINC_MASK | PS_OWB_MASK;
-	unsigned long ps;
-	unsigned long wb, ws;
-
-	if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t)))
-		return -EIO;
-
-	__get_user(regs->pc, &gregset->pc);
-	__get_user(ps, &gregset->ps);
-	__get_user(regs->lbeg, &gregset->lbeg);
-	__get_user(regs->lend, &gregset->lend);
-	__get_user(regs->lcount, &gregset->lcount);
-	__get_user(ws, &gregset->windowstart);
-	__get_user(wb, &gregset->windowbase);
-	__get_user(regs->threadptr, &gregset->threadptr);
-
-	regs->ps = (regs->ps & ~ps_mask) | (ps & ps_mask) | (1 << PS_EXCM_BIT);
-
-	if (wb >= XCHAL_NUM_AREGS / 4)
-		return -EFAULT;
-
-	if (wb != regs->windowbase || ws != regs->windowstart) {
-		unsigned long rotws, wmask;
-
-		rotws = (((ws | (ws << WSBITS)) >> wb) &
-			 ((1 << WSBITS) - 1)) & ~1;
-		wmask = ((rotws ? WSBITS + 1 - ffs(rotws) : 0) << 4) |
-			(rotws & 0xF) | 1;
-		regs->windowbase = wb;
-		regs->windowstart = ws;
-		regs->wmask = wmask;
-	}
-
-	if (wb != 0 && __copy_from_user(regs->areg + XCHAL_NUM_AREGS - wb * 4,
-					gregset->a, wb * 16))
-		return -EFAULT;
-
-	if (__copy_from_user(regs->areg, gregset->a + wb * 4,
-			     (WSBITS - wb) * 16))
-		return -EFAULT;
-
-	return 0;
+	return copy_regset_from_user(child, &user_xtensa_view, REGSET_GPR,
+				     0, sizeof(xtensa_gregset_t), uregs);
 }
-
-
-#if XTENSA_HAVE_COPROCESSORS
-#define CP_OFFSETS(cp) \
-	{ \
-		.elf_xtregs_offset = offsetof(elf_xtregs_t, cp), \
-		.ti_offset = offsetof(struct thread_info, xtregs_cp.cp), \
-		.sz = sizeof(xtregs_ ## cp ## _t), \
-	}
-
-static const struct {
-	size_t elf_xtregs_offset;
-	size_t ti_offset;
-	size_t sz;
-} cp_offsets[] = {
-	CP_OFFSETS(cp0),
-	CP_OFFSETS(cp1),
-	CP_OFFSETS(cp2),
-	CP_OFFSETS(cp3),
-	CP_OFFSETS(cp4),
-	CP_OFFSETS(cp5),
-	CP_OFFSETS(cp6),
-	CP_OFFSETS(cp7),
-};
-#endif
 
 static int ptrace_getxregs(struct task_struct *child, void __user *uregs)
 {
-	struct pt_regs *regs = task_pt_regs(child);
-	struct thread_info *ti = task_thread_info(child);
-	elf_xtregs_t __user *xtregs = uregs;
-	int ret = 0;
-	int i __maybe_unused;
-
-	if (!access_ok(VERIFY_WRITE, uregs, sizeof(elf_xtregs_t)))
-		return -EIO;
-
-#if XTENSA_HAVE_COPROCESSORS
-	/* Flush all coprocessor registers to memory. */
-	coprocessor_flush_all(ti);
-
-	for (i = 0; i < ARRAY_SIZE(cp_offsets); ++i)
-		ret |= __copy_to_user((char __user *)xtregs +
-				      cp_offsets[i].elf_xtregs_offset,
-				      (const char *)ti +
-				      cp_offsets[i].ti_offset,
-				      cp_offsets[i].sz);
-#endif
-	ret |= __copy_to_user(&xtregs->opt, &regs->xtregs_opt,
-			      sizeof(xtregs->opt));
-	ret |= __copy_to_user(&xtregs->user,&ti->xtregs_user,
-			      sizeof(xtregs->user));
-
-	return ret ? -EFAULT : 0;
+	return copy_regset_to_user(child, &user_xtensa_view, REGSET_TIE,
+				   0, sizeof(elf_xtregs_t), uregs);
 }
 
 static int ptrace_setxregs(struct task_struct *child, void __user *uregs)
 {
-	struct thread_info *ti = task_thread_info(child);
-	struct pt_regs *regs = task_pt_regs(child);
-	elf_xtregs_t *xtregs = uregs;
-	int ret = 0;
-	int i __maybe_unused;
-
-	if (!access_ok(VERIFY_READ, uregs, sizeof(elf_xtregs_t)))
-		return -EFAULT;
-
-#if XTENSA_HAVE_COPROCESSORS
-	/* Flush all coprocessors before we overwrite them. */
-	coprocessor_flush_all(ti);
-	coprocessor_release_all(ti);
-
-	for (i = 0; i < ARRAY_SIZE(cp_offsets); ++i)
-		ret |= __copy_from_user((char *)ti + cp_offsets[i].ti_offset,
-					(const char __user *)xtregs +
-					cp_offsets[i].elf_xtregs_offset,
-					cp_offsets[i].sz);
-#endif
-	ret |= __copy_from_user(&regs->xtregs_opt, &xtregs->opt,
-				sizeof(xtregs->opt));
-	ret |= __copy_from_user(&ti->xtregs_user, &xtregs->user,
-				sizeof(xtregs->user));
-
-	return ret ? -EFAULT : 0;
+	return copy_regset_from_user(child, &user_xtensa_view, REGSET_TIE,
+				     0, sizeof(elf_xtregs_t), uregs);
 }
 
 static int ptrace_peekusr(struct task_struct *child, long regno,
···
 	void __user *datap = (void __user *) data;
 
 	switch (request) {
-	case PTRACE_PEEKTEXT:	/* read word at location addr. */
-	case PTRACE_PEEKDATA:
-		ret = generic_ptrace_peekdata(child, addr, data);
-		break;
-
 	case PTRACE_PEEKUSR:	/* read register specified by addr. */
 		ret = ptrace_peekusr(child, addr, datap);
-		break;
-
-	case PTRACE_POKETEXT:	/* write the word at location addr. */
-	case PTRACE_POKEDATA:
-		ret = generic_ptrace_pokedata(child, addr, data);
 		break;
 
 	case PTRACE_POKEUSR:	/* write register specified by addr. */
···
 	return ret;
 }
 
-unsigned long do_syscall_trace_enter(struct pt_regs *regs)
+void do_syscall_trace_enter(struct pt_regs *regs)
 {
 	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
 	    tracehook_report_syscall_entry(regs))
-		return -1;
+		regs->syscall = NO_SYSCALL;
 
-	return regs->areg[2];
+	if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
+		trace_sys_enter(regs, syscall_get_nr(current, regs));
 }
 
 void do_syscall_trace_leave(struct pt_regs *regs)
 {
 	int step;
+
+	if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
+		trace_sys_exit(regs, regs_return_value(regs));
 
 	step = test_thread_flag(TIF_SINGLESTEP);
 

arch/xtensa/kernel/setup.c

···
 void __init setup_arch(char **cmdline_p)
 {
 	pr_info("config ID: %08x:%08x\n",
-		get_sr(SREG_EPC), get_sr(SREG_EXCSAVE));
-	if (get_sr(SREG_EPC) != XCHAL_HW_CONFIGID0 ||
-	    get_sr(SREG_EXCSAVE) != XCHAL_HW_CONFIGID1)
+		xtensa_get_sr(SREG_EPC), xtensa_get_sr(SREG_EXCSAVE));
+	if (xtensa_get_sr(SREG_EPC) != XCHAL_HW_CONFIGID0 ||
+	    xtensa_get_sr(SREG_EXCSAVE) != XCHAL_HW_CONFIGID1)
 		pr_info("built for config ID: %08x:%08x\n",
 			XCHAL_HW_CONFIGID0, XCHAL_HW_CONFIGID1);
 
···
 		      num_online_cpus(),
 		      cpumask_pr_args(cpu_online_mask),
 		      XCHAL_BUILD_UNIQUE_ID,
-		      get_sr(SREG_EPC), get_sr(SREG_EXCSAVE),
+		      xtensa_get_sr(SREG_EPC), xtensa_get_sr(SREG_EXCSAVE),
 		      XCHAL_HAVE_BE ?  "big" : "little",
 		      ccount_freq/1000000,
 		      (ccount_freq/10000) % 100,

arch/xtensa/kernel/signal.c

···
 	COPY(sar);
 #undef COPY
 
-	/* All registers were flushed to stack. Start with a prestine frame. */
+	/* All registers were flushed to stack. Start with a pristine frame. */
 
 	regs->wmask = 1;
 	regs->windowbase = 0;
 	regs->windowstart = 1;
 
-	regs->syscall = -1;		/* disable syscall checks */
+	regs->syscall = NO_SYSCALL;	/* disable syscall checks */
 
 	/* For PS, restore only PS.CALLINC.
 	 * Assume that all other bits are either the same as for the signal
···
 
 		/* Are we from a system call? */
 
-		if ((signed)regs->syscall >= 0) {
+		if (regs->syscall != NO_SYSCALL) {
 
 			/* If so, check system call restarting.. */
 
···
 	}
 
 	/* Did we come from a system call? */
-	if ((signed) regs->syscall >= 0) {
+	if (regs->syscall != NO_SYSCALL) {
 		/* Restart the system call - no handlers present */
 		switch (regs->areg[2]) {
 		case -ERESTARTNOHAND:

arch/xtensa/kernel/syscall.c

···
 #include <linux/sched/mm.h>
 #include <linux/shm.h>
 
-typedef void (*syscall_t)(void);
+syscall_t sys_call_table[__NR_syscalls] /* FIXME __cacheline_aligned */= {
+	[0 ... __NR_syscalls - 1] = (syscall_t)&sys_ni_syscall,
 
-syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= {
-	[0 ... __NR_syscall_count - 1] = (syscall_t)&sys_ni_syscall,
-
-#define __SYSCALL(nr,symbol,nargs) [ nr ] = (syscall_t)symbol,
-#include <uapi/asm/unistd.h>
+#define __SYSCALL(nr, entry, nargs)[nr] = (syscall_t)entry,
+#include <asm/syscall_table.h>
+#undef __SYSCALL
 };
 
 #define COLOUR_ALIGN(addr, pgoff) \

arch/xtensa/kernel/syscalls/Makefile

···
+# SPDX-License-Identifier: GPL-2.0
+kapi := arch/$(SRCARCH)/include/generated/asm
+uapi := arch/$(SRCARCH)/include/generated/uapi/asm
+
+_dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
+	  $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
+
+syscall := $(srctree)/$(src)/syscall.tbl
+syshdr := $(srctree)/$(src)/syscallhdr.sh
+systbl := $(srctree)/$(src)/syscalltbl.sh
+
+quiet_cmd_syshdr = SYSHDR  $@
+      cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
+		   '$(syshdr_abis_$(basetarget))'		\
+		   '$(syshdr_pfx_$(basetarget))'		\
+		   '$(syshdr_offset_$(basetarget))'
+
+quiet_cmd_systbl = SYSTBL  $@
+      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
+		   '$(systbl_abis_$(basetarget))'		\
+		   '$(systbl_abi_$(basetarget))'		\
+		   '$(systbl_offset_$(basetarget))'
+
+$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+	$(call if_changed,syshdr)
+
+$(kapi)/syscall_table.h: $(syscall) $(systbl)
+	$(call if_changed,systbl)
+
+uapisyshdr-y		+= unistd_32.h
+kapisyshdr-y		+= syscall_table.h
+
+targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+
+PHONY += all
+all: $(addprefix $(uapi)/,$(uapisyshdr-y))
+all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+	@:

arch/xtensa/kernel/syscalls/syscall.tbl

···
+# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+#
+# system call numbers and entry vectors for xtensa
+#
+# The format is:
+# <number> <abi> <name> <entry point>
+#
+# The <abi> is always "common" for this file
+#
+0	common	spill				sys_ni_syscall
+1	common	xtensa				sys_ni_syscall
+2	common	available4			sys_ni_syscall
+3	common	available5			sys_ni_syscall
+4	common	available6			sys_ni_syscall
+5	common	available7			sys_ni_syscall
+6	common	available8			sys_ni_syscall
+7	common	available9			sys_ni_syscall
+# File Operations
+8	common	open				sys_open
+9	common	close				sys_close
+10	common	dup				sys_dup
+11	common	dup2				sys_dup2
+12	common	read				sys_read
+13	common	write				sys_write
+14	common	select				sys_select
+15	common	lseek				sys_lseek
+16	common	poll				sys_poll
+17	common	_llseek				sys_llseek
+18	common	epoll_wait			sys_epoll_wait
+19	common	epoll_ctl			sys_epoll_ctl
+20	common	epoll_create			sys_epoll_create
+21	common	creat				sys_creat
+22	common	truncate			sys_truncate
+23	common	ftruncate			sys_ftruncate
+24	common	readv				sys_readv
+25	common	writev				sys_writev
+26	common	fsync				sys_fsync
+27	common	fdatasync			sys_fdatasync
+28	common	truncate64			sys_truncate64
+29	common	ftruncate64			sys_ftruncate64
+30	common	pread64				sys_pread64
+31	common	pwrite64			sys_pwrite64
+32	common	link				sys_link
+33	common	rename				sys_rename
+34	common	symlink				sys_symlink
+35	common	readlink			sys_readlink
+36	common	mknod				sys_mknod
+37	common	pipe				sys_pipe
+38	common	unlink				sys_unlink
+39	common	rmdir				sys_rmdir
+40	common	mkdir				sys_mkdir
+41	common	chdir				sys_chdir
+42	common	fchdir				sys_fchdir
+43	common	getcwd				sys_getcwd
+44	common	chmod				sys_chmod
+45	common	chown				sys_chown
+46	common	stat				sys_newstat
+47	common	stat64				sys_stat64
+48	common	lchown				sys_lchown
+49	common	lstat				sys_newlstat
+50	common	lstat64				sys_lstat64
+51	common	available51			sys_ni_syscall
+52	common	fchmod				sys_fchmod
+53	common	fchown				sys_fchown
+54	common	fstat				sys_newfstat
+55	common	fstat64				sys_fstat64
+56	common	flock				sys_flock
+57	common	access				sys_access
+58	common	umask				sys_umask
+59	common	getdents			sys_getdents
+60	common	getdents64			sys_getdents64
+61	common	fcntl64				sys_fcntl64
+62	common	fallocate			sys_fallocate
+63	common	fadvise64_64			xtensa_fadvise64_64
+64	common	utime				sys_utime
+65	common	utimes				sys_utimes
+66	common	ioctl				sys_ioctl
+67	common	fcntl				sys_fcntl
+68	common	setxattr			sys_setxattr
+69	common	getxattr			sys_getxattr
+70	common	listxattr			sys_listxattr
+71	common	removexattr			sys_removexattr
+72	common	lsetxattr			sys_lsetxattr
+73	common	lgetxattr			sys_lgetxattr
+74	common	llistxattr			sys_llistxattr
+75	common	lremovexattr			sys_lremovexattr
+76	common	fsetxattr			sys_fsetxattr
+77	common	fgetxattr			sys_fgetxattr
+78	common	flistxattr			sys_flistxattr
+79	common	fremovexattr			sys_fremovexattr
+# File Map / Shared Memory Operations
+80	common	mmap2				sys_mmap_pgoff
+81	common	munmap				sys_munmap
+82	common	mprotect			sys_mprotect
+83	common	brk				sys_brk
+84	common	mlock				sys_mlock
+85	common	munlock				sys_munlock
+86	common	mlockall			sys_mlockall
+87	common	munlockall			sys_munlockall
+88	common	mremap				sys_mremap
+89	common	msync				sys_msync
+90	common	mincore				sys_mincore
+91	common	madvise				sys_madvise
+92	common	shmget				sys_shmget
+93	common	shmat				xtensa_shmat
+94	common	shmctl				sys_shmctl
+95	common	shmdt				sys_shmdt
+# Socket Operations
+96	common	socket				sys_socket
+97	common	setsockopt			sys_setsockopt
+98	common	getsockopt			sys_getsockopt
+99	common	shutdown			sys_shutdown
+100	common	bind				sys_bind
+101	common	connect				sys_connect
+102	common	listen				sys_listen
+103	common	accept				sys_accept
+104	common	getsockname			sys_getsockname
+105	common	getpeername			sys_getpeername
+106	common	sendmsg				sys_sendmsg
+107	common	recvmsg				sys_recvmsg
+108	common	send				sys_send
+109	common	recv				sys_recv
+110	common	sendto				sys_sendto
+111	common	recvfrom			sys_recvfrom
+112	common	socketpair			sys_socketpair
+113	common	sendfile			sys_sendfile
+114	common	sendfile64			sys_sendfile64
+115	common	sendmmsg			sys_sendmmsg
+# Process Operations
+116	common	clone				sys_clone
+117	common	execve				sys_execve
+118	common	exit				sys_exit
+119	common	exit_group			sys_exit_group
+120	common	getpid				sys_getpid
+121	common	wait4				sys_wait4
+122	common	waitid				sys_waitid
+123	common	kill				sys_kill
+124	common	tkill				sys_tkill
+125	common	tgkill				sys_tgkill
+126	common	set_tid_address			sys_set_tid_address
+127	common	gettid				sys_gettid
+128	common	setsid				sys_setsid
+129	common	getsid				sys_getsid
+130	common	prctl				sys_prctl
+131	common	personality			sys_personality
+132	common	getpriority			sys_getpriority
+133	common	setpriority			sys_setpriority
+134	common	setitimer			sys_setitimer
+135	common	getitimer			sys_getitimer
+136	common	setuid				sys_setuid
+137	common	getuid				sys_getuid
+138	common	setgid				sys_setgid
+139	common	getgid				sys_getgid
+140	common	geteuid				sys_geteuid
+141	common	getegid				sys_getegid
+142	common	setreuid			sys_setreuid
+143	common	setregid			sys_setregid
+144	common	setresuid			sys_setresuid
+145	common	getresuid			sys_getresuid
+146	common	setresgid			sys_setresgid
+147	common	getresgid			sys_getresgid
+148	common	setpgid				sys_setpgid
+149	common	getpgid				sys_getpgid
+150	common	getppid				sys_getppid
+151	common	getpgrp				sys_getpgrp
+# 152 was set_thread_area
+152	common	reserved152			sys_ni_syscall
+# 153 was get_thread_area
+153	common	reserved153			sys_ni_syscall
+154	common	times				sys_times
+155	common	acct				sys_acct
+156	common	sched_setaffinity		sys_sched_setaffinity
+157	common	sched_getaffinity		sys_sched_getaffinity
+158	common	capget				sys_capget
+159	common	capset				sys_capset
+160	common	ptrace				sys_ptrace
+161	common	semtimedop			sys_semtimedop
+162	common	semget				sys_semget
+163	common	semop				sys_semop
+164	common	semctl				sys_semctl
+165	common	available165			sys_ni_syscall
+166	common	msgget				sys_msgget
+167	common	msgsnd				sys_msgsnd
+168	common	msgrcv				sys_msgrcv
+169	common	msgctl				sys_msgctl
+170	common	available170			sys_ni_syscall
+# File System
+171	common	umount2				sys_umount
+172	common	mount				sys_mount
+173	common	swapon				sys_swapon
+174	common	chroot				sys_chroot
+175	common	pivot_root			sys_pivot_root
+176	common	umount				sys_oldumount
+177	common	swapoff				sys_swapoff
+178	common	sync				sys_sync
+179	common	syncfs				sys_syncfs
+180	common	setfsuid			sys_setfsuid
+181	common	setfsgid			sys_setfsgid
+182	common	sysfs				sys_sysfs
+183	common	ustat				sys_ustat
+184	common	statfs				sys_statfs
+185	common	fstatfs				sys_fstatfs
+186	common	statfs64			sys_statfs64
+187	common	fstatfs64			sys_fstatfs64
+# System
+188	common	setrlimit			sys_setrlimit
+189	common	getrlimit			sys_getrlimit
+190	common	getrusage			sys_getrusage
+191	common	futex				sys_futex
+192	common	gettimeofday			sys_gettimeofday
+193	common	settimeofday			sys_settimeofday
+194	common	adjtimex			sys_adjtimex
+195	common	nanosleep			sys_nanosleep
+196	common	getgroups			sys_getgroups
+197	common	setgroups			sys_setgroups
+198	common	sethostname			sys_sethostname
+199	common	setdomainname			sys_setdomainname
+200	common	syslog				sys_syslog
+201	common	vhangup				sys_vhangup
+202	common	uselib				sys_uselib
+203	common	reboot				sys_reboot
+204	common	quotactl			sys_quotactl
+# 205 was old nfsservctl
+205	common	nfsservctl			sys_ni_syscall
+206	common	_sysctl				sys_sysctl
+207	common	bdflush				sys_bdflush
+208	common	uname				sys_newuname
+209	common	sysinfo				sys_sysinfo
+210	common	init_module			sys_init_module
+211	common	delete_module			sys_delete_module
+212	common	sched_setparam			sys_sched_setparam
+213	common	sched_getparam			sys_sched_getparam
+214	common	sched_setscheduler		sys_sched_setscheduler
+215	common	sched_getscheduler		sys_sched_getscheduler
+216	common	sched_get_priority_max		sys_sched_get_priority_max
+217	common	sched_get_priority_min		sys_sched_get_priority_min
+218	common	sched_rr_get_interval		sys_sched_rr_get_interval
+219	common	sched_yield			sys_sched_yield
+222	common	available222			sys_ni_syscall
+# Signal Handling
+223	common	restart_syscall			sys_restart_syscall
+224	common	sigaltstack			sys_sigaltstack
+225	common	rt_sigreturn			xtensa_rt_sigreturn
+226	common	rt_sigaction			sys_rt_sigaction
+227	common	rt_sigprocmask			sys_rt_sigprocmask
+228	common	rt_sigpending			sys_rt_sigpending
+229	common	rt_sigtimedwait			sys_rt_sigtimedwait
+230	common	rt_sigqueueinfo			sys_rt_sigqueueinfo
+231	common	rt_sigsuspend			sys_rt_sigsuspend
+# Message
+232	common	mq_open				sys_mq_open
+233	common	mq_unlink			sys_mq_unlink
+234	common	mq_timedsend			sys_mq_timedsend
+235	common	mq_timedreceive			sys_mq_timedreceive
+236	common	mq_notify			sys_mq_notify
+237	common	mq_getsetattr			sys_mq_getsetattr
+238	common	available238			sys_ni_syscall
+239	common	io_setup			sys_io_setup
+# IO
+240	common	io_destroy			sys_io_destroy
+241	common	io_submit			sys_io_submit
+242	common	io_getevents			sys_io_getevents
+243	common	io_cancel			sys_io_cancel
+244	common	clock_settime			sys_clock_settime
+245	common	clock_gettime			sys_clock_gettime
+246	common	clock_getres			sys_clock_getres
+247	common	clock_nanosleep			sys_clock_nanosleep
+# Timer
+248	common	timer_create			sys_timer_create
+249	common	timer_delete			sys_timer_delete
+250	common	timer_settime			sys_timer_settime
+251	common	timer_gettime			sys_timer_gettime
+252	common	timer_getoverrun		sys_timer_getoverrun
+# System
+253	common	reserved253			sys_ni_syscall
+254	common	lookup_dcookie			sys_lookup_dcookie
+255	common	available255			sys_ni_syscall
+256	common	add_key				sys_add_key
+257	common	request_key			sys_request_key
+258	common	keyctl				sys_keyctl
+259	common	available259			sys_ni_syscall
+260	common	readahead			sys_readahead
+261	common	remap_file_pages		sys_remap_file_pages
+262	common	migrate_pages			sys_migrate_pages
+263	common	mbind				sys_mbind
+264	common	get_mempolicy			sys_get_mempolicy
+265	common	set_mempolicy			sys_set_mempolicy
+266	common	unshare				sys_unshare
+267	common	move_pages			sys_move_pages
+268	common	splice				sys_splice
+269	common	tee				sys_tee
+270	common	vmsplice			sys_vmsplice
+271	common	available271			sys_ni_syscall
+272	common	pselect6			sys_pselect6
+273	common	ppoll				sys_ppoll
+274	common	epoll_pwait			sys_epoll_pwait
+275	common	epoll_create1			sys_epoll_create1
+276	common	inotify_init			sys_inotify_init
+277	common	inotify_add_watch		sys_inotify_add_watch
+278	common	inotify_rm_watch		sys_inotify_rm_watch
+279	common	inotify_init1			sys_inotify_init1
+280	common	getcpu				sys_getcpu
+281	common	kexec_load			sys_ni_syscall
+282	common	ioprio_set			sys_ioprio_set
+283	common	ioprio_get			sys_ioprio_get
+284	common	set_robust_list			sys_set_robust_list
+285	common	get_robust_list			sys_get_robust_list
+286	common	available286			sys_ni_syscall
+287	common	available287			sys_ni_syscall
+# Relative File Operations
+288	common	openat				sys_openat
+289	common	mkdirat				sys_mkdirat
+290	common	mknodat				sys_mknodat
+291	common	unlinkat			sys_unlinkat
+292	common	renameat			sys_renameat
+293	common	linkat				sys_linkat
+294	common	symlinkat			sys_symlinkat
+295	common	readlinkat			sys_readlinkat
+296	common	utimensat			sys_utimensat
+297	common	fchownat			sys_fchownat
+298	common	futimesat			sys_futimesat
+299	common	fstatat64			sys_fstatat64
+300	common	fchmodat			sys_fchmodat
+301	common	faccessat			sys_faccessat
+302	common	available302			sys_ni_syscall
+303	common	available303			sys_ni_syscall
+304	common	signalfd			sys_signalfd
+# 305 was timerfd
+306	common	eventfd				sys_eventfd
+307	common	recvmmsg			sys_recvmmsg
+308	common	setns				sys_setns
+309	common	signalfd4			sys_signalfd4
+310	common	dup3				sys_dup3
+311	common	pipe2				sys_pipe2
+312	common	timerfd_create			sys_timerfd_create
+313	common	timerfd_settime			sys_timerfd_settime
+314	common	timerfd_gettime			sys_timerfd_gettime
+315	common	available315			sys_ni_syscall
+316	common	eventfd2			sys_eventfd2
+317	common	preadv				sys_preadv
+318	common	pwritev				sys_pwritev
+319	common	available319			sys_ni_syscall
+320	common	fanotify_init			sys_fanotify_init
+321	common	fanotify_mark			sys_fanotify_mark
+322	common	process_vm_readv		sys_process_vm_readv
+323	common	process_vm_writev		sys_process_vm_writev
+324	common	name_to_handle_at		sys_name_to_handle_at
+325	common	open_by_handle_at		sys_open_by_handle_at
+326	common	sync_file_range2		sys_sync_file_range2
+327	common	perf_event_open			sys_perf_event_open
+328	common	rt_tgsigqueueinfo		sys_rt_tgsigqueueinfo
+329	common	clock_adjtime			sys_clock_adjtime
+330	common	prlimit64			sys_prlimit64
+331	common	kcmp				sys_kcmp
+332	common	finit_module			sys_finit_module
+333	common	accept4				sys_accept4
+334	common	sched_setattr			sys_sched_setattr
+335	common	sched_getattr			sys_sched_getattr
+336	common	renameat2			sys_renameat2
+337	common	seccomp				sys_seccomp
+338	common	getrandom			sys_getrandom
+339	common	memfd_create			sys_memfd_create
+340	common	bpf				sys_bpf
+341	common	execveat			sys_execveat
+342	common	userfaultfd			sys_userfaultfd
+343	common	membarrier			sys_membarrier
+344	common	mlock2				sys_mlock2
+345	common	copy_file_range			sys_copy_file_range
+346	common	preadv2				sys_preadv2
+347	common	pwritev2			sys_pwritev2
+348	common	pkey_mprotect			sys_pkey_mprotect
+349	common	pkey_alloc			sys_pkey_alloc
+350	common	pkey_free			sys_pkey_free
+351	common	statx				sys_statx

arch/xtensa/kernel/syscalls/syscallhdr.sh

···
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_UAPI_ASM_XTENSA_`basename "$out" | sed \
+	-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+	-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+	printf "#ifndef %s\n" "${fileguard}"
+	printf "#define %s\n" "${fileguard}"
+	printf "\n"
+
+	nxt=0
+	while read nr abi name entry ; do
+		if [ -z "$offset" ]; then
+			printf "#define __NR_%s%s\t%s\n" \
+				"${prefix}" "${name}" "${nr}"
+		else
+			printf "#define __NR_%s%s\t(%s + %s)\n" \
+				"${prefix}" "${name}" "${offset}" "${nr}"
+		fi
+		nxt=$((nr+1))
+	done
+
+	printf "\n"
+	printf "#ifdef __KERNEL__\n"
+	printf "#define __NR_syscalls\t%s\n" "${nxt}"
+	printf "#endif\n"
+	printf "\n"
+	printf "#endif /* %s */" "${fileguard}"
+) > "$out"

arch/xtensa/kernel/syscalls/syscalltbl.sh

···
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+my_abi="$4"
+offset="$5"
+
+emit() {
+	t_nxt="$1"
+	t_nr="$2"
+	t_entry="$3"
+
+	while [ $t_nxt -lt $t_nr ]; do
+		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
+		t_nxt=$((t_nxt+1))
+	done
+	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
+}
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+	nxt=0
+	if [ -z "$offset" ]; then
+		offset=0
+	fi
+
+	while read nr abi name entry ; do
+		emit $((nxt+offset)) $((nr+offset)) $entry
+		nxt=$((nr+1))
+	done
+) > "$out"

arch/xtensa/kernel/traps.c

···
 extern void kernel_exception(void);
 extern void user_exception(void);
 
-extern void fast_syscall_kernel(void);
 extern void fast_syscall_user(void);
 extern void fast_alloca(void);
 extern void fast_unaligned(void);
···
 static dispatch_init_table_t __initdata dispatch_init_table[] = {
 
 { EXCCAUSE_ILLEGAL_INSTRUCTION,	0,	   do_illegal_instruction},
-{ EXCCAUSE_SYSTEM_CALL,		KRNL,	   fast_syscall_kernel },
 { EXCCAUSE_SYSTEM_CALL,		USER,	   fast_syscall_user },
 { EXCCAUSE_SYSTEM_CALL,		0,	   system_call },
 /* EXCCAUSE_INSTRUCTION_FETCH unhandled */
···
 
 static inline void check_valid_nmi(void)
 {
-	unsigned intread = get_sr(interrupt);
-	unsigned intenable = get_sr(intenable);
+	unsigned intread = xtensa_get_sr(interrupt);
+	unsigned intenable = xtensa_get_sr(intenable);
 
 	BUG_ON(intread & intenable &
 	       ~(XTENSA_INTLEVEL_ANDBELOW_MASK(PROFILING_INTLEVEL) ^
···
 	irq_enter();
 
 	for (;;) {
-		unsigned intread = get_sr(interrupt);
-		unsigned intenable = get_sr(intenable);
+		unsigned intread = xtensa_get_sr(interrupt);
+		unsigned intenable = xtensa_get_sr(intenable);
 		unsigned int_at_level = intread & intenable;
 		unsigned level;
 

arch/xtensa/mm/init.c

···
 	max_pfn = PFN_DOWN(memblock_end_of_DRAM());
 	max_low_pfn = min(max_pfn, MAX_LOW_PFN);
 
+	early_memtest((phys_addr_t)min_low_pfn << PAGE_SHIFT,
+		      (phys_addr_t)max_low_pfn << PAGE_SHIFT);
+
 	memblock_set_current_limit(PFN_PHYS(max_low_pfn));
 	dma_contiguous_reserve(PFN_PHYS(max_low_pfn));
 

drivers/irqchip/irq-xtensa-mx.c

···
 	__this_cpu_write(cached_irq_mask,
 			XCHAL_INTTYPE_MASK_EXTERN_EDGE |
 			XCHAL_INTTYPE_MASK_EXTERN_LEVEL);
-	set_sr(XCHAL_INTTYPE_MASK_EXTERN_EDGE |
+	xtensa_set_sr(XCHAL_INTTYPE_MASK_EXTERN_EDGE |
 			XCHAL_INTTYPE_MASK_EXTERN_LEVEL, intenable);
 }
 
···
 	} else {
 		mask = __this_cpu_read(cached_irq_mask) & ~mask;
 		__this_cpu_write(cached_irq_mask, mask);
-		set_sr(mask, intenable);
+		xtensa_set_sr(mask, intenable);
 	}
 }
 
···
 	} else {
 		mask |= __this_cpu_read(cached_irq_mask);
 		__this_cpu_write(cached_irq_mask, mask);
-		set_sr(mask, intenable);
+		xtensa_set_sr(mask, intenable);
 	}
 }
 
···
 
 static void xtensa_mx_irq_ack(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intclear);
+	xtensa_set_sr(1 << d->hwirq, intclear);
 }
 
 static int xtensa_mx_irq_retrigger(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intset);
+	xtensa_set_sr(1 << d->hwirq, intset);
 	return 1;
 }
 

drivers/irqchip/irq-xtensa-pic.c

···
 static void xtensa_irq_mask(struct irq_data *d)
 {
 	cached_irq_mask &= ~(1 << d->hwirq);
-	set_sr(cached_irq_mask, intenable);
+	xtensa_set_sr(cached_irq_mask, intenable);
 }
 
 static void xtensa_irq_unmask(struct irq_data *d)
 {
 	cached_irq_mask |= 1 << d->hwirq;
-	set_sr(cached_irq_mask, intenable);
+	xtensa_set_sr(cached_irq_mask, intenable);
 }
 
 static void xtensa_irq_enable(struct irq_data *d)
···
 
 static void xtensa_irq_ack(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intclear);
+	xtensa_set_sr(1 << d->hwirq, intclear);
 }
 
 static int xtensa_irq_retrigger(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intset);
+	xtensa_set_sr(1 << d->hwirq, intset);
 	return 1;
 }
 

include/uapi/linux/audit.h

···
 #define AUDIT_ARCH_TILEGX32	(EM_TILEGX|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_TILEPRO	(EM_TILEPRO|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_X86_64	(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_XTENSA	(EM_XTENSA)
 
 #define AUDIT_PERM_EXEC		1
 #define AUDIT_PERM_WRITE	2

include/uapi/linux/elf-em.h

···
 #define EM_M32R		88	/* Renesas M32R */
 #define EM_MN10300	89	/* Panasonic/MEI MN10300, AM33 */
 #define EM_OPENRISC     92     /* OpenRISC 32-bit embedded processor */
+#define EM_XTENSA	94	/* Tensilica Xtensa Architecture */
 #define EM_BLACKFIN     106     /* ADI Blackfin Processor */
 #define EM_ALTERA_NIOS2	113	/* Altera Nios II soft-core processor */
 #define EM_TI_C6000	140	/* TI C6X DSPs */