From: Lai Jiangshan <jiangshanlai@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Lai Jiangshan <laijs@linux.alibaba.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
kvm@vger.kernel.org
Subject: [PATCH V2 07/10] KVM: X86: Zap the invalid list after remote tlb flushing
Date: Sat, 18 Sep 2021 08:56:33 +0800 [thread overview]
Message-ID: <20210918005636.3675-8-jiangshanlai@gmail.com> (raw)
In-Reply-To: <20210918005636.3675-1-jiangshanlai@gmail.com>
From: Lai Jiangshan <laijs@linux.alibaba.com>
In mmu_sync_children(), it can zap the invalid list after remote tlb flushing.
Emptifying the invalid list ASAP might help reduce a remote tlb flushing
in some cases.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
---
arch/x86/kvm/mmu/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 2f3f47dc96b0..ff52e8354148 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -2032,7 +2032,7 @@ static int mmu_sync_children(struct kvm_vcpu *vcpu,
protected |= rmap_write_protect(vcpu, sp->gfn);
if (protected) {
- kvm_flush_remote_tlbs(vcpu->kvm);
+ kvm_mmu_remote_flush_or_zap(vcpu->kvm, &invalid_list, true);
flush = false;
}
--
2.19.1.6.gb485710b
next prev parent reply other threads:[~2021-09-18 0:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210918005636.3675-1-jiangshanlai@gmail.com>
2021-09-18 0:56 ` [PATCH V2 01/10] KVM: X86: Fix missed remote tlb flush in rmap_write_protect() Lai Jiangshan
2021-09-18 0:56 ` [PATCH V2 02/10] KVM: X86: Synchronize the shadow pagetable before link it Lai Jiangshan
2021-09-23 14:36 ` Paolo Bonzini
2021-09-18 0:56 ` [PATCH V2 03/10] KVM: Remove tlbs_dirty Lai Jiangshan
2021-09-23 15:23 ` Paolo Bonzini
2021-09-24 15:40 ` Lai Jiangshan
2021-09-24 16:03 ` Paolo Bonzini
2021-09-18 0:56 ` [PATCH V2 04/10] KVM: X86: Don't flush current tlb on shadow page modification Lai Jiangshan
2021-09-18 0:56 ` [PATCH V2 05/10] KVM: X86: Remove kvm_mmu_flush_or_zap() Lai Jiangshan
2021-09-18 0:56 ` [PATCH V2 06/10] KVM: X86: Change kvm_sync_page() to return true when remote flush is needed Lai Jiangshan
2021-09-18 0:56 ` Lai Jiangshan [this message]
2021-09-18 0:56 ` [PATCH V2 08/10] KVM: X86: Remove FNAME(update_pte) Lai Jiangshan
2021-09-18 1:49 ` Lai Jiangshan
2021-09-18 0:56 ` [PATCH V2 09/10] KVM: X86: Don't unsync pagetables when speculative Lai Jiangshan
2021-09-18 0:56 ` [PATCH V2 10/10] KVM: X86: Don't check unsync if the original spte is writible Lai Jiangshan
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