linux-kernel - [PATCH] KVM: x86: clear hidden CPU state at reset time

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Message-Id: <1433407498-9055-1-git-send-email-pbonzini@redhat.com>
Date:	Thu,  4 Jun 2015 10:44:58 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	rkrcmar@...hat.com
Subject: [PATCH] KVM: x86: clear hidden CPU state at reset time

This was noticed by Radim while reviewing the implementation of
system management mode.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/x86.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 79dde1656db6..bd6bcd54cd44 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7254,6 +7254,8 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
 
 void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 {
+	vcpu->arch.hflags = 0;
+
 	atomic_set(&vcpu->arch.nmi_queued, 0);
 	vcpu->arch.nmi_pending = 0;
 	vcpu->arch.nmi_injected = false;
-- 
1.8.3.1

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