From b91280f3f36d64cc6f8022893af00935c99de197 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 22 Oct 2020 06:29:34 +0000 Subject: powerpc/32s: Inline _tlbie() on non SMP On non SMP, _tlbie() is just a tlbie plus a sync instruction. Make it static inline. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/475136425541db5c7c8a0395d19d400525b251bc.1603348103.git.christophe.leroy@csgroup.eu --- arch/powerpc/include/asm/book3s/32/tlbflush.h | 7 +++++++ arch/powerpc/mm/book3s32/hash_low.S | 7 ++----- 2 files changed, 9 insertions(+), 5 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/book3s/32/tlbflush.h b/arch/powerpc/include/asm/book3s/32/tlbflush.h index 3043e7af70aa..f392a619138d 100644 --- a/arch/powerpc/include/asm/book3s/32/tlbflush.h +++ b/arch/powerpc/include/asm/book3s/32/tlbflush.h @@ -12,7 +12,14 @@ extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); +#ifdef CONFIG_SMP void _tlbie(unsigned long address); +#else +static inline void _tlbie(unsigned long address) +{ + asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); +} +#endif void _tlbia(void); static inline void local_flush_tlb_page(struct vm_area_struct *vma, diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S index aca353d1c5f4..ce1459dd08ba 100644 --- a/arch/powerpc/mm/book3s32/hash_low.S +++ b/arch/powerpc/mm/book3s32/hash_low.S @@ -622,8 +622,8 @@ _ASM_NOKPROBE_SYMBOL(flush_hash_pages) /* * Flush an entry from the TLB */ -_GLOBAL(_tlbie) #ifdef CONFIG_SMP +_GLOBAL(_tlbie) lwz r8,TASK_CPU(r2) oris r8,r8,11 mfmsr r10 @@ -647,12 +647,9 @@ _GLOBAL(_tlbie) stw r0,0(r9) /* clear mmu_hash_lock */ mtmsr r10 isync -#else /* CONFIG_SMP */ - tlbie r3 - sync -#endif /* CONFIG_SMP */ blr _ASM_NOKPROBE_SYMBOL(_tlbie) +#endif /* CONFIG_SMP */ /* * Flush the entire TLB. 603/603e only -- cgit v1.2.3