KVM: VMX: Force vm86 mode if setting flags during real mode
When resetting from userspace, we need to handle the flags being cleared
even after we are in real mode.
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index f130c01..bb56ae3 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -523,6 +523,8 @@
static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
{
+ if (vcpu->rmode.active)
+ rflags |= IOPL_MASK | X86_EFLAGS_VM;
vmcs_writel(GUEST_RFLAGS, rflags);
}