KVM: VMX: reset CPL only on CS register write.

Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
git-mirror · Jan 24, 2013 · 2f14324 · 2f14324
1 parent 1f3141e
commit 2f14324
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
@@ -3269,7 +3269,8 @@ static void vmx_set_segment(struct kvm_vcpu *vcpu,
 	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
 
 	vmx_segment_cache_clear(vmx);
-	__clear_bit(VCPU_EXREG_CPL, (ulong *)&vcpu->arch.regs_avail);
+	if (seg == VCPU_SREG_CS)
+		__clear_bit(VCPU_EXREG_CPL, (ulong *)&vcpu->arch.regs_avail);
 
 	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
 		vmx->rmode.segs[seg] = *var;