[PATCH 07/11] 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 <[email protected]>
---
 drivers/kvm/vmx.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

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 unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
 
 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);
 }
 
-- 
1.5.3

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---

• References:
  • [PATCH 00/11] KVM updates for Linux 2.6.24-rc review
    • From: Avi Kivity <[email protected]>

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