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From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: 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>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Lai Jiangshan <jiangshanlai+lkml@gmail.com>
Subject: [PATCH 0/2] KVM: nVMX: Fix VPID + !EPT TLB bugs
Date: Thu, 25 Nov 2021 01:49:42 +0000	[thread overview]
Message-ID: <20211125014944.536398-1-seanjc@google.com> (raw)

Fix two bugs reported by Lai where KVM mishandles guest-scoped TLB flushes
when L2 is active.  Bugs confirmed (and confirmed fixed) by the VPID+access
test (patches posted for kvm-unit-tests).

Sean Christopherson (2):
  KVM: nVMX: Flush current VPID (L1 vs. L2) for KVM_REQ_TLB_FLUSH_GUEST
  KVM: nVMX: Emulate guest TLB flush on nested VM-Enter with new vpid12

 arch/x86/kvm/vmx/nested.c | 45 +++++++++++++++++----------------------
 arch/x86/kvm/vmx/vmx.c    | 23 ++++++++++++--------
 arch/x86/kvm/x86.c        | 28 ++++++++++++++++++++----
 arch/x86/kvm/x86.h        |  7 +-----
 4 files changed, 59 insertions(+), 44 deletions(-)

-- 
2.34.0.rc2.393.gf8c9666880-goog


             reply	other threads:[~2021-11-25  2:10 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-25  1:49 Sean Christopherson [this message]
2021-11-25  1:49 ` [PATCH 1/2] KVM: nVMX: Flush current VPID (L1 vs. L2) for KVM_REQ_TLB_FLUSH_GUEST Sean Christopherson
2021-11-25  3:50   ` Lai Jiangshan
2021-11-25  1:49 ` [PATCH 2/2] KVM: nVMX: Emulate guest TLB flush on nested VM-Enter with new vpid12 Sean Christopherson
2021-11-25  3:50   ` Lai Jiangshan
2021-11-29 19:26     ` Sean Christopherson
2021-11-26 12:11 ` [PATCH 0/2] KVM: nVMX: Fix VPID + !EPT TLB bugs Paolo Bonzini

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