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| author |   Avi Kivity <avi@redhat.com> | 2010-09-19 14:34:08 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:53:02 +0200 |
| commit | 49e9d557f9b6e9639390b63b645f2def8dde5f1b (patch) | |
| tree | bf5938665cfa712845d6e490f1cb169bf8f2d78f /arch | |
| parent | KVM: VMX: Emulated real mode interrupt injection (diff) | |
| download | linux-dev-49e9d557f9b6e9639390b63b645f2def8dde5f1b.tar.xz linux-dev-49e9d557f9b6e9639390b63b645f2def8dde5f1b.zip | |
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: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9d3f972aa19c..28c72da93a1b 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -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) { |