Unverified Commit 97cf301f authored by Alexandre Ghiti's avatar Alexandre Ghiti Committed by Palmer Dabbelt
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riscv: Flush the tlb when a page directory is freed 



The riscv privileged specification mandates to flush the TLB whenever a
page directory is modified, so add that to tlb_flush().

Fixes: c5e9b2c2 ("riscv: Improve tlb_flush()")
Signed-off-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: default avatarCharlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20240128120405.25876-1-alexghiti@rivosinc.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 168b8497

arch/riscv/include/asm/tlb.h

+1 −1
Original line number Diff line number Diff line
@@ -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,