From 3f1e782998cdf6dac037588b99b10b787b00810a Mon Sep 17 00:00:00 2001 From: Guo Ren Date: Sun, 6 Jun 2021 17:20:50 +0200 Subject: riscv: add ASID-based tlbflushing methods Implement optimized version of the tlb flushing routines for systems using ASIDs. These are behind the use_asid_allocator static branch to not affect existing systems not using ASIDs. Signed-off-by: Guo Ren [hch: rebased on top of previous cleanups, use the same algorithm as the non-ASID based code for local vs global flushes, keep functions as local as possible] Signed-off-by: Christoph Hellwig Tested-by: Guo Ren Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/mmu_context.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/riscv/include') diff --git a/arch/riscv/include/asm/mmu_context.h b/arch/riscv/include/asm/mmu_context.h index b0659413a080..7030837adc1a 100644 --- a/arch/riscv/include/asm/mmu_context.h +++ b/arch/riscv/include/asm/mmu_context.h @@ -33,6 +33,8 @@ static inline int init_new_context(struct task_struct *tsk, return 0; } +DECLARE_STATIC_KEY_FALSE(use_asid_allocator); + #include #endif /* _ASM_RISCV_MMU_CONTEXT_H */ -- cgit