On Sun, Jan 28, 2024 at 01:04:05PM +0100, Alexandre Ghiti wrote:
> The riscv privileged specification mandates to flush the TLB whenever a
> page directory is modified, so add that to tlb_flush().
>
> Fixes: c5e9b2c2ae82 ("riscv: Improve tlb_flush()")
> Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
> ---
> arch/riscv/include/asm/tlb.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/riscv/include/asm/tlb.h b/arch/riscv/include/asm/tlb.h
> index 1eb5682b2af6..50b63b5c15bd 100644
> --- a/arch/riscv/include/asm/tlb.h
> +++ b/arch/riscv/include/asm/tlb.h
> @@ -16,7 +16,7 @@ static void tlb_flush(struct mmu_gather *tlb);
> static inline void tlb_flush(struct mmu_gather *tlb)
> {
> #ifdef CONFIG_MMU
> - if (tlb->fullmm || tlb->need_flush_all)
> + if (tlb->fullmm || tlb->need_flush_all || tlb->freed_tables)
> flush_tlb_mm(tlb->mm);
> else
> flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end,
> --
> 2.39.2
>
>
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Reviewed-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
