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KVM: VMX: Respect interrupt window in big real mode

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If an interrupt is pending, we need to stop emulation so we
can inject it.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Avi Kivity 2010-09-19 14:34:08 +02:00
parent a92601bb70
commit 49e9d557f9
1 changed files with 9 additions and 0 deletions
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9
arch/x86/kvm/vmx.c
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@ -3582,8 +3582,17 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
struct vcpu_vmx *vmx = to_vmx(vcpu);
enum emulation_result err = EMULATE_DONE;
int ret = 1;
u32 cpu_exec_ctrl;
bool intr_window_requested;
cpu_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
intr_window_requested = cpu_exec_ctrl & CPU_BASED_VIRTUAL_INTR_PENDING;
while (!guest_state_valid(vcpu)) {
if (intr_window_requested
&& (kvm_get_rflags(&vmx->vcpu) & X86_EFLAGS_IF))
return handle_interrupt_window(&vmx->vcpu);
err = emulate_instruction(vcpu, 0, 0, 0);
if (err == EMULATE_DO_MMIO) {