powerpc: Drop SYNC_601() ISYNC_601() and SYNC()

Those macros are now empty at all time. Drop them.

Signed-off-by: Christophe Leroy <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://lore.kernel.org/r/7990bb63[e-mail]

arch/powerpc/include/asm/ppc_asm.h

···
 #endif
 
 /* various errata or part fixups */
-#define	SYNC
-#define SYNC_601
-#define ISYNC_601
-
 #if defined(CONFIG_PPC_CELL) || defined(CONFIG_PPC_FSL_BOOK3E)
 #define MFTB(dest)			\
 90:	mfspr dest, SPRN_TBRL;		\

arch/powerpc/kernel/entry_32.S

···
 	mtspr	SPRN_SRR0,r11
 	mtspr	SPRN_SRR1,r10
 	mtlr	r9
-	SYNC
 	RFI				/* jump to handler, enable MMU */
 
 #if defined (CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500)
···
 	LOAD_REG_IMMEDIATE(r0, MSR_KERNEL)
 	mtspr	SPRN_SRR0,r12
 	mtspr	SPRN_SRR1,r0
-	SYNC
 	RFI
 
 reenable_mmu:
···
 #endif
 	mtspr	SPRN_SRR0,r9
 	mtspr	SPRN_SRR1,r10
-	SYNC
 	RFI
 _ASM_NOKPROBE_SYMBOL(stack_ovf)
 #endif
···
 	/* disable interrupts so current_thread_info()->flags can't change */
 	LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)	/* doesn't include MSR_EE */
 	/* Note: We don't bother telling lockdep about it */
-	SYNC
 	mtmsr	r10
 	lwz	r9,TI_FLAGS(r2)
 	li	r8,-MAX_ERRNO
···
 #endif
 	mtspr	SPRN_SRR0,r7
 	mtspr	SPRN_SRR1,r8
-	SYNC
 	RFI
 _ASM_NOKPROBE_SYMBOL(syscall_exit_finish)
 #ifdef CONFIG_44x
···
 	 * lockdep as we are supposed to have IRQs on at this point
 	 */
 	ori	r10,r10,MSR_EE
-	SYNC
 	mtmsr	r10
 
 	/* Save NVGPRS if they're not saved already */
···
 #endif
 	mtspr	SPRN_SRR0, r9
 	mtspr	SPRN_SRR1, r10
-	SYNC
 	RFI
 _ASM_NOKPROBE_SYMBOL(ret_from_kernel_syscall)
 
···
 	REST_GPR(9, r11)
 	REST_GPR(12, r11)
 	lwz	r11,GPR11(r11)
-	SYNC
 	RFI
 _ASM_NOKPROBE_SYMBOL(fast_exception_return)
 
···
 	 * from the interrupt. */
 	/* Note: We don't bother telling lockdep about it */
 	LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)
-	SYNC			/* Some chip revs have problems here... */
 	mtmsr	r10		/* disable interrupts */
 
 	lwz	r3,_MSR(r1)	/* Returning to user mode? */
···
 	 * exc_exit_restart below.  -- paulus
 	 */
 	LOAD_REG_IMMEDIATE(r10,MSR_KERNEL & ~MSR_RI)
-	SYNC
 	mtmsr	r10		/* clear the RI bit */
 	.globl exc_exit_restart
 exc_exit_restart:
···
 	lwz	r1,GPR1(r1)
 	.globl exc_exit_restart_end
 exc_exit_restart_end:
-	SYNC
 	RFI
 _ASM_NOKPROBE_SYMBOL(exc_exit_restart)
 _ASM_NOKPROBE_SYMBOL(exc_exit_restart_end)
···
 	mfmsr	r10
 #endif
 	ori	r10,r10,MSR_EE
-	SYNC
 	mtmsr	r10		/* hard-enable interrupts */
 	bl	schedule
 recheck:
···
 	 * TI_FLAGS aren't advertised.
 	 */
 	LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)
-	SYNC
 	mtmsr	r10		/* disable interrupts */
 	lwz	r9,TI_FLAGS(r2)
 	andi.	r0,r9,_TIF_NEED_RESCHED
···
 	beq	restore_user
 do_user_signal:			/* r10 contains MSR_KERNEL here */
 	ori	r10,r10,MSR_EE
-	SYNC
 	mtmsr	r10		/* hard-enable interrupts */
 	/* save r13-r31 in the exception frame, if not already done */
 	lwz	r3,_TRAP(r1)
···
 	mfmsr	r9
 	stw	r9,8(r1)
 	LOAD_REG_IMMEDIATE(r0,MSR_KERNEL)
-	SYNC			/* disable interrupts so SRR0/1 */
-	mtmsr	r0		/* don't get trashed */
+	mtmsr	r0	/* disable interrupts so SRR0/1 don't get trashed */
 	li	r9,MSR_KERNEL & ~(MSR_IR|MSR_DR)
 	mtlr	r6
 	stw	r7, THREAD + RTAS_SP(r2)

arch/powerpc/kernel/fpu.S

···
 	oris	r5,r5,MSR_VSX@h
 END_FTR_SECTION_IFSET(CPU_FTR_VSX)
 #endif
-	SYNC
 	MTMSRD(r5)			/* enable use of fpu now */
 	isync
 	/* enable use of FP after return */

arch/powerpc/kernel/head_32.S

···
 	lis	r0,start_here@h
 	ori	r0,r0,start_here@l
 	mtspr	SPRN_SRR0,r0
-	SYNC
 	RFI				/* enables MMU */
 
 /*
···
 	mtcr	r11
 	lwz	r11, THR11(r10)
 	mfspr	r10, SPRN_SPRG_SCRATCH0
-	SYNC
 	RFI
 
 1:	/* ISI */
 	mtcr	r11
 	mfspr	r11, SPRN_SPRG_SCRATCH1
 	mfspr	r10, SPRN_SPRG_SCRATCH0
-	SYNC
 	RFI
 
 stack_overflow:
···
 	   set to map the 0xf0000000 - 0xffffffff region */
 	mfmsr	r0
 	rlwinm	r0,r0,0,28,26		/* clear DR (0x10) */
-	SYNC
 	mtmsr	r0
 	isync
 
···
 	ori	r3,r3,start_secondary@l
 	mtspr	SPRN_SRR0,r3
 	mtspr	SPRN_SRR1,r4
-	SYNC
 	RFI
 #endif /* CONFIG_SMP */
 
···
 	.align	4
 	mtspr	SPRN_SRR0,r4
 	mtspr	SPRN_SRR1,r3
-	SYNC
 	RFI
 /* Load up the kernel context */
 2:	bl	load_up_mmu
···
 	ori	r3,r3,start_kernel@l
 	mtspr	SPRN_SRR0,r3
 	mtspr	SPRN_SRR1,r4
-	SYNC
 	RFI
 
 /*
···
 	.align	4
 	mtspr	SPRN_SRR0, r4
 	mtspr	SPRN_SRR1, r3
-	SYNC
 	RFI
 1:	bl	clear_bats
 	lis	r3, BATS@ha
···
 	mtmsr	r3
 	mtspr	SPRN_SRR0, r7
 	mtspr	SPRN_SRR1, r6
-	SYNC
 	RFI
 
 flush_tlbs:

arch/powerpc/kernel/head_32.h

···
 #endif
 	mtspr	SPRN_SRR1,r10
 	mtspr	SPRN_SRR0,r11
-	SYNC
 	RFI				/* jump to handler, enable MMU */
 99:	b	ret_from_kernel_syscall
 .endm

arch/powerpc/kernel/l2cr_6xx.S

···
 	sync
 
 	/* Restore MSR (restores EE and DR bits to original state) */
-	SYNC
 	mtmsr	r7
 	isync
 
···
 1:	bdnz	1b
 
 	/* Restore MSR (restores EE and DR bits to original state) */
-4:	SYNC
+4:
 	mtmsr	r7
 	isync
 	blr

arch/powerpc/mm/book3s32/hash_low.S

···
 	 * covered by a BAT).  -- paulus
 	 */
 	mfmsr	r9
-	SYNC
 	rlwinm	r0,r9,0,17,15		/* clear bit 16 (MSR_EE) */
 	rlwinm	r0,r0,0,28,26		/* clear MSR_DR */
 	mtmsr	r0
-	SYNC_601
 	isync
 
 #ifdef CONFIG_SMP
···
 
 	/* reenable interrupts and DR */
 	mtmsr	r9
-	SYNC_601
 	isync
 
 	lwz	r0,4(r1)
···
 	 * covered by a BAT).  -- paulus
 	 */
 	mfmsr	r10
-	SYNC
 	rlwinm	r0,r10,0,17,15		/* clear bit 16 (MSR_EE) */
 	rlwinm	r0,r0,0,28,26		/* clear MSR_DR */
 	mtmsr	r0
-	SYNC_601
 	isync
 
 	/* First find a PTE in the range that has _PAGE_HASHPTE set */
···
 #endif
 
 19:	mtmsr	r10
-	SYNC_601
 	isync
 	blr
 EXPORT_SYMBOL(flush_hash_pages)
···
 	lwz	r8,TASK_CPU(r2)
 	oris	r8,r8,11
 	mfmsr	r10
-	SYNC
 	rlwinm	r0,r10,0,17,15		/* clear bit 16 (MSR_EE) */
 	rlwinm	r0,r0,0,28,26		/* clear DR */
 	mtmsr	r0
-	SYNC_601
 	isync
 	lis	r9,mmu_hash_lock@h
 	ori	r9,r9,mmu_hash_lock@l
···
 	li	r0,0
 	stw	r0,0(r9)		/* clear mmu_hash_lock */
 	mtmsr	r10
-	SYNC_601
 	isync
 #else /* CONFIG_SMP */
 	tlbie	r3
···
 	lwz	r8,TASK_CPU(r2)
 	oris	r8,r8,10
 	mfmsr	r10
-	SYNC
 	rlwinm	r0,r10,0,17,15		/* clear bit 16 (MSR_EE) */
 	rlwinm	r0,r0,0,28,26		/* clear DR */
 	mtmsr	r0
-	SYNC_601
 	isync
 	lis	r9,mmu_hash_lock@h
 	ori	r9,r9,mmu_hash_lock@l
···
 	li	r0,0
 	stw	r0,0(r9)		/* clear mmu_hash_lock */
 	mtmsr	r10
-	SYNC_601
 	isync
 #endif /* CONFIG_SMP */
 	blr