From: Gleb Natapov <gleb@redhat.com>
To: kvm@vger.kernel.org
Cc: mtosatti@redhat.com, pbonzini@redhat.com
Subject: [PATCH] KVM: VMX: Fix check guest state validity if a guest is in VM86 mode
Date: Sun, 14 Apr 2013 16:07:37 +0300 [thread overview]
Message-ID: <20130414130737.GP17919@redhat.com> (raw)
If guest vcpu is in VM86 mode the vcpu state should be checked as if in
real mode.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d268677..fec7c48 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3554,7 +3554,7 @@ static bool guest_state_valid(struct kvm_vcpu *vcpu)
return true;
/* real mode guest state checks */
- if (!is_protmode(vcpu)) {
+ if (!is_protmode(vcpu) || (vmx_get_rflags(vcpu) & X86_EFLAGS_VM)) {
if (!rmode_segment_valid(vcpu, VCPU_SREG_CS))
return false;
if (!rmode_segment_valid(vcpu, VCPU_SREG_SS))
--
Gleb.
next reply other threads:[~2013-04-14 13:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-14 13:07 Gleb Natapov [this message]
2013-04-16 21:34 ` [PATCH] KVM: VMX: Fix check guest state validity if a guest is in VM86 mode Marcelo Tosatti
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