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Subject[PATCH 36/47] KVM: VMX: Adjust rflags if in real mode emulation
Date
We set rflags.vm86 when virtualizing real mode to do through vm8086 mode;
so we need to take it out again when reading rflags.

Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/vmx.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 31c3a87..2b7e7bd 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -781,7 +781,12 @@ static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu)

static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
{
- return vmcs_readl(GUEST_RFLAGS);
+ unsigned long rflags;
+
+ rflags = vmcs_readl(GUEST_RFLAGS);
+ if (to_vmx(vcpu)->rmode.vm86_active)
+ rflags &= ~(unsigned long)(X86_EFLAGS_IOPL | X86_EFLAGS_VM);
+ return rflags;
}

static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
--
1.6.4.1


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