| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 26 Feb 2024 12:06:09 +0900 From: Byungchul Park <byungchul@...com> To: linux-kernel@...r.kernel.org, linux-mm@...ck.org Cc: kernel_team@...ynix.com, akpm@...ux-foundation.org, ying.huang@...el.com, vernhao@...cent.com, mgorman@...hsingularity.net, hughd@...gle.com, willy@...radead.org, david@...hat.com, peterz@...radead.org, luto@...nel.org, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com, rjgolo@...il.com Subject: [RESEND PATCH v8 4/8] x86/tlb, mm/rmap: Separate arch_tlbbatch_clear() out of arch_tlbbatch_flush() This is a preparation for migrc mechanism that requires to avoid redundant TLB flushes by manipulating tlb batch's arch data after arch_tlbbatch_flush(). However, we cannot because the data is getting cleared inside arch_tlbbatch_flush(). So separated the part clearing the tlb batch's arch data out of arch_tlbbatch_flush(). Signed-off-by: Byungchul Park <byungchul@...com> --- arch/x86/mm/tlb.c | 2 -- mm/rmap.c | 1 + 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 453ea95b667d..941f41df02f3 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1268,8 +1268,6 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch) local_irq_enable(); } - cpumask_clear(&batch->cpumask); - put_flush_tlb_info(); put_cpu(); } diff --git a/mm/rmap.c b/mm/rmap.c index da36f23ff7b0..b484d659d0c1 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -643,6 +643,7 @@ void try_to_unmap_flush(void) return; arch_tlbbatch_flush(&tlb_ubc->arch); + arch_tlbbatch_clear(&tlb_ubc->arch); tlb_ubc->flush_required = false; tlb_ubc->writable = false; } -- 2.17.1
Powered by blists - more mailing lists