From: Lai Jiangshan <jiangshanlai@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Lai Jiangshan <laijs@linux.alibaba.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 3/7] KVM: X86: Zap the invalid list after remote tlb flushing
Date: Tue, 24 Aug 2021 15:55:19 +0800 [thread overview]
Message-ID: <20210824075524.3354-4-jiangshanlai@gmail.com> (raw)
In-Reply-To: <20210824075524.3354-1-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 987953a901d2..a165eb8713bc 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -2050,7 +2050,7 @@ static bool mmu_sync_children(struct kvm_vcpu *vcpu,
protected |= rmap_write_protect(vcpu, sp->gfn);
if (protected) {
- kvm_flush_remote_tlbs(vcpu->kvm);
+ kvm_mmu_flush_or_zap(vcpu, &invalid_list, true, flush);
flush = false;
}
--
2.19.1.6.gb485710b
next prev parent reply other threads:[~2021-08-24 17:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 7:55 [PATCH 0/7] KVM: X86: MMU: misc fixes and cleanups Lai Jiangshan
2021-08-24 7:55 ` [PATCH 1/7] KVM: X86: Fix missed remote tlb flush in rmap_write_protect() Lai Jiangshan
2021-09-02 21:38 ` Sean Christopherson
2021-09-13 9:57 ` Maxim Levitsky
2021-08-24 7:55 ` [PATCH 2/7] KVM: X86: Synchronize the shadow pagetable before link it Lai Jiangshan
2021-09-02 23:40 ` Sean Christopherson
2021-09-02 23:54 ` Sean Christopherson
2021-09-03 0:44 ` Lai Jiangshan
2021-09-03 16:06 ` Sean Christopherson
2021-09-03 16:25 ` Lai Jiangshan
2021-09-03 16:40 ` Sean Christopherson
2021-09-03 17:00 ` Lai Jiangshan
2021-09-03 16:33 ` Lai Jiangshan
2021-09-03 0:51 ` Lai Jiangshan
2021-09-13 11:30 ` Maxim Levitsky
2021-09-13 20:49 ` Sean Christopherson
2021-09-13 22:31 ` Maxim Levitsky
2021-08-24 7:55 ` Lai Jiangshan [this message]
2021-09-02 21:54 ` [PATCH 3/7] KVM: X86: Zap the invalid list after remote tlb flushing Sean Christopherson
2021-08-24 7:55 ` [PATCH 4/7] KVM: X86: Remove FNAME(update_pte) Lai Jiangshan
2021-09-13 9:49 ` Maxim Levitsky
2021-08-24 7:55 ` [PATCH 5/7] KVM: X86: Don't unsync pagetables when speculative Lai Jiangshan
2021-09-13 11:02 ` Maxim Levitsky
2021-09-18 3:06 ` Lai Jiangshan
2021-08-24 7:55 ` [PATCH 6/7] KVM: X86: Don't check unsync if the original spte is writible Lai Jiangshan
2021-08-24 7:55 ` [PATCH 7/7] KVM: X86: Also prefetch the last range in __direct_pte_prefetch() Lai Jiangshan
2021-08-25 15:18 ` Sean Christopherson
2021-08-25 22:58 ` Lai Jiangshan
2021-08-31 18:02 ` [PATCH 0/7] KVM: X86: MMU: misc fixes and cleanups Lai Jiangshan
2021-08-31 21:57 ` Sean Christopherson
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