Commit 49e9d557 authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: VMX: Respect interrupt window in big real mode 



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

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent a92601bb

arch/x86/kvm/vmx.c

+9 −0
Original line number Diff line number Diff line
@@ -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) {