From: Alexandre Ghiti <alexghiti@rivosinc.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Jisheng Zhang <jszhang@kernel.org>, Alexandre Ghiti <alexghiti@rivosinc.com>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH -fixes] riscv: Fix arch_tlbbatch_flush() by clearing the batch cpumask Date: Tue, 30 Jan 2024 12:55:08 +0100 [thread overview] Message-ID: <20240130115508.105386-1-alexghiti@rivosinc.com> (raw) We must clear the cpumask once we have flushed the batch, otherwise cpus get accumulated and we end sending IPIs to more cpus than needed. Fixes: 54d7431af73e ("riscv: Add support for BATCHED_UNMAP_TLB_FLUSH") Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> --- arch/riscv/mm/tlbflush.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c index 99c3e037f127..c8efc3f87a0f 100644 --- a/arch/riscv/mm/tlbflush.c +++ b/arch/riscv/mm/tlbflush.c @@ -240,4 +240,5 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch) { __flush_tlb_range(NULL, &batch->cpumask, 0, FLUSH_TLB_MAX_SIZE, PAGE_SIZE); + cpumask_clear(&batch->cpumask); } -- 2.39.2
WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Ghiti <alexghiti@rivosinc.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Jisheng Zhang <jszhang@kernel.org>, Alexandre Ghiti <alexghiti@rivosinc.com>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH -fixes] riscv: Fix arch_tlbbatch_flush() by clearing the batch cpumask Date: Tue, 30 Jan 2024 12:55:08 +0100 [thread overview] Message-ID: <20240130115508.105386-1-alexghiti@rivosinc.com> (raw) We must clear the cpumask once we have flushed the batch, otherwise cpus get accumulated and we end sending IPIs to more cpus than needed. Fixes: 54d7431af73e ("riscv: Add support for BATCHED_UNMAP_TLB_FLUSH") Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> --- arch/riscv/mm/tlbflush.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c index 99c3e037f127..c8efc3f87a0f 100644 --- a/arch/riscv/mm/tlbflush.c +++ b/arch/riscv/mm/tlbflush.c @@ -240,4 +240,5 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch) { __flush_tlb_range(NULL, &batch->cpumask, 0, FLUSH_TLB_MAX_SIZE, PAGE_SIZE); + cpumask_clear(&batch->cpumask); } -- 2.39.2 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2024-01-30 11:55 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-01-30 11:55 Alexandre Ghiti [this message] 2024-01-30 11:55 ` [PATCH -fixes] riscv: Fix arch_tlbbatch_flush() by clearing the batch cpumask Alexandre Ghiti 2024-02-06 0:26 ` Charlie Jenkins 2024-02-06 0:26 ` Charlie Jenkins 2024-02-06 10:15 ` Jisheng Zhang 2024-02-06 10:15 ` Jisheng Zhang 2024-02-07 19:23 ` Samuel Holland 2024-02-07 19:23 ` Samuel Holland 2024-02-07 19:35 ` Palmer Dabbelt 2024-02-07 19:35 ` Palmer Dabbelt 2024-02-08 1:30 ` patchwork-bot+linux-riscv 2024-02-08 1:30 ` patchwork-bot+linux-riscv
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