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KVM: Don't mistreat edge-triggered INIT IPI as INIT de-assert. (LAPIC) 

If the guest programs an IPI with level=0 (de-assert) and trig_mode=0 (edge),
it is erroneously treated as INIT de-assert and ignored, but to quote the
spec: "For this delivery mode [INIT de-assert], the level flag must be set to
0 and trigger mode flag to 1."

Signed-off-by: Julian Stecklina <js@alien8.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
hifive-unleashed-5.1
Julian Stecklina 2012-01-16 14:02:20 +01:00 committed by Avi Kivity
parent b93a355327
commit a52315e1d5
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/lapic.c
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@ -433,7 +433,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
break;
case APIC_DM_INIT:
if (level) {
if (!trig_mode || level) {
result = 1;
vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;
kvm_make_request(KVM_REQ_EVENT, vcpu);