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| author | Sergey Matyukevich <sergey.matyukevich@syntacore.com> | 2023-02-26 16:01:36 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-10 00:22:01 +0100 |
| commit | e921050022f1f12d5029d1487a7dfc46cde15523 (patch) | |
| tree | fd0cc400e815065fcca7683ace551ca258eb1373 /arch/riscv/mm/context.c | |
| parent | Linux 6.2-rc1 (diff) | |
| download | linux-e921050022f1f12d5029d1487a7dfc46cde15523.tar.xz linux-e921050022f1f12d5029d1487a7dfc46cde15523.zip | |
Revert "riscv: mm: notify remote harts about mmu cache updates"
This reverts the remaining bits of commit 4bd1d80efb5a ("riscv: mm:
notify remote harts harts about mmu cache updates").
According to bug reports, suggested approach to fix stale TLB entries
is not sufficient. It needs to be replaced by a more robust solution.
Fixes: 4bd1d80efb5a ("riscv: mm: notify remote harts about mmu cache updates")
Reported-by: Zong Li <zong.li@sifive.com>
Reported-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com>
Cc: stable@vger.kernel.org
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20230226150137.1919750-2-geomatsi@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/mm/context.c')
| -rw-r--r-- | arch/riscv/mm/context.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/riscv/mm/context.c b/arch/riscv/mm/context.c index 80ce9caba8d2..7acbfbd14557 100644 --- a/arch/riscv/mm/context.c +++ b/arch/riscv/mm/context.c @@ -196,16 +196,6 @@ switch_mm_fast: if (need_flush_tlb) local_flush_tlb_all(); -#ifdef CONFIG_SMP - else { - cpumask_t *mask = &mm->context.tlb_stale_mask; - - if (cpumask_test_cpu(cpu, mask)) { - cpumask_clear_cpu(cpu, mask); - local_flush_tlb_all_asid(cntx & asid_mask); - } - } -#endif } static void set_mm_noasid(struct mm_struct *mm) |