From: Alexandre Ghiti <alexghiti@rivosinc.com>
To: Will Deacon <will@kernel.org>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Nick Piggin <npiggin@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Samuel Holland <samuel.holland@sifive.com>,
Andrew Jones <ajones@ventanamicro.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH -fixes] riscv: Flush the tlb when a page directory is freed
Date: Sun, 28 Jan 2024 13:04:05 +0100 [thread overview]
Message-ID: <20240128120405.25876-1-alexghiti@rivosinc.com> (raw)
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(-)
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
next reply other threads:[~2024-01-28 12:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-28 12:04 Alexandre Ghiti [this message]
2024-01-29 3:06 ` [External] [PATCH -fixes] riscv: Flush the tlb when a page directory is freed yunhui cui
2024-01-29 8:28 ` Alexandre Ghiti
2024-02-05 23:53 ` Charlie Jenkins
2024-02-07 19:27 ` Samuel Holland
2024-02-08 1:30 ` patchwork-bot+linux-riscv
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