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| author | Alexandre Ghiti <alexghiti@rivosinc.com> | 2023-10-30 16:30:25 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-11-06 18:20:49 +0300 |
| commit | c5e9b2c2ae82231d85d9650854e7b3e97dde33da (patch) | |
| tree | bfb3fa46a8ba4f983d8489127d2613643854fead /arch/riscv/mm | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
| download | linux-c5e9b2c2ae82231d85d9650854e7b3e97dde33da.tar.xz | |
riscv: Improve tlb_flush()
For now, tlb_flush() simply calls flush_tlb_mm() which results in a
flush of the whole TLB. So let's use mmu_gather fields to provide a more
fine-grained flush of the TLB.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # On RZ/Five SMARC
Link: https://lore.kernel.org/r/20231030133027.19542-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/mm')
| -rw-r--r-- | arch/riscv/mm/tlbflush.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c index 77be59aadc73..fa03289853d8 100644 --- a/arch/riscv/mm/tlbflush.c +++ b/arch/riscv/mm/tlbflush.c @@ -132,6 +132,13 @@ void flush_tlb_mm(struct mm_struct *mm) __flush_tlb_range(mm, 0, -1, PAGE_SIZE); } +void flush_tlb_mm_range(struct mm_struct *mm, + unsigned long start, unsigned long end, + unsigned int page_size) +{ + __flush_tlb_range(mm, start, end - start, page_size); +} + void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) { __flush_tlb_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE); |