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| author | Samuel Holland <samuel.holland@sifive.com> | 2024-03-27 07:49:47 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-04-29 20:49:29 +0300 |
| commit | c6026d35b6abb5bd954788478bfa800a942e2033 (patch) | |
| tree | badedd72ce527c0c09402f70bdaddc32e0149128 /arch/riscv/include | |
| parent | 9546f00410ed88b8117388cfd74ea59f4616a158 (diff) | |
| download | linux-c6026d35b6abb5bd954788478bfa800a942e2033.tar.xz | |
riscv: mm: Combine the SMP and UP TLB flush code
In SMP configurations, all TLB flushing narrower than flush_tlb_all()
goes through __flush_tlb_range(). Do the same in UP configurations.
This allows UP configurations to take advantage of recent improvements
to the code in tlbflush.c, such as support for huge pages and flushing
multiple-page ranges.
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Yunhui Cui <cuiyunhui@bytedance.com>
Link: https://lore.kernel.org/r/20240327045035.368512-7-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/tlbflush.h | 31 |
1 files changed, 3 insertions, 28 deletions
diff --git a/arch/riscv/include/asm/tlbflush.h b/arch/riscv/include/asm/tlbflush.h index 4112cc8d1d69..4f86424b1ba5 100644 --- a/arch/riscv/include/asm/tlbflush.h +++ b/arch/riscv/include/asm/tlbflush.h @@ -27,12 +27,7 @@ static inline void local_flush_tlb_page(unsigned long addr) { ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory")); } -#else /* CONFIG_MMU */ -#define local_flush_tlb_all() do { } while (0) -#define local_flush_tlb_page(addr) do { } while (0) -#endif /* CONFIG_MMU */ -#if defined(CONFIG_SMP) && defined(CONFIG_MMU) void flush_tlb_all(void); void flush_tlb_mm(struct mm_struct *mm); void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, @@ -54,28 +49,8 @@ void arch_tlbbatch_add_pending(struct arch_tlbflush_unmap_batch *batch, unsigned long uaddr); void arch_flush_tlb_batched_pending(struct mm_struct *mm); void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch); - -#else /* CONFIG_SMP && CONFIG_MMU */ - -#define flush_tlb_all() local_flush_tlb_all() -#define flush_tlb_page(vma, addr) local_flush_tlb_page(addr) - -static inline void flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - local_flush_tlb_all(); -} - -/* Flush a range of kernel pages */ -static inline void flush_tlb_kernel_range(unsigned long start, - unsigned long end) -{ - local_flush_tlb_all(); -} - -#define flush_tlb_mm(mm) flush_tlb_all() -#define flush_tlb_mm_range(mm, start, end, page_size) flush_tlb_all() -#define local_flush_tlb_kernel_range(start, end) flush_tlb_all() -#endif /* !CONFIG_SMP || !CONFIG_MMU */ +#else /* CONFIG_MMU */ +#define local_flush_tlb_all() do { } while (0) +#endif /* CONFIG_MMU */ #endif /* _ASM_RISCV_TLBFLUSH_H */ |