diff mbox series

[-fixes] riscv: Flush the tlb when a page directory is freed

Message ID 20240128120405.25876-1-alexghiti@rivosinc.com
State New
Headers
Series [-fixes] riscv: Flush the tlb when a page directory is freed |

Commit Message

Alexandre Ghiti Jan. 28, 2024, 12:04 p.m. UTC 
  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@rivosinc.com>
---
 arch/riscv/include/asm/tlb.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

patchwork-bot+linux-riscv@kernel.org Feb. 8, 2024, 1:30 a.m. UTC | #1 
Hello:

This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Sun, 28 Jan 2024 13:04:05 +0100 you 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@rivosinc.com>
> ---
>  arch/riscv/include/asm/tlb.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Here is the summary with links:
  - [-fixes] riscv: Flush the tlb when a page directory is freed
    https://git.kernel.org/riscv/c/97cf301fa42e

You are awesome, thank you!
diff mbox series

Patch

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,