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KVM: VMX: don't clobber segment AR if emulating invalid state

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The ususable bit is important for determining state validity; don't
clobber it.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2009-01-04 23:43:42 +02:00
parent 1872a3f411
commit 9fd4a3b7a4
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/vmx.c
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@ -1649,7 +1649,7 @@ static void vmx_get_segment(struct kvm_vcpu *vcpu,
var->limit = vmcs_read32(sf->limit);
var->selector = vmcs_read16(sf->selector);
ar = vmcs_read32(sf->ar_bytes);
if (ar & AR_UNUSABLE_MASK)
if ((ar & AR_UNUSABLE_MASK) && !emulate_invalid_guest_state)
ar = 0;
var->type = ar & 15;
var->s = (ar >> 4) & 1;