Commit fa834e91 authored by Radim Krčmář's avatar Radim Krčmář Committed by Paolo Bonzini

KVM: x86: fix APIC physical destination wrapping

x2apic allows destinations > 0xff and we don't want them delivered to
lower APICs.  They are correctly handled by doing nothing.
Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 085563fb
...@@ -693,7 +693,10 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, ...@@ -693,7 +693,10 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
ret = true; ret = true;
if (irq->dest_mode == 0) { /* physical mode */ if (irq->dest_mode == 0) { /* physical mode */
dst = &map->phys_map[irq->dest_id & 0xff]; if (irq->dest_id >= ARRAY_SIZE(map->phys_map))
goto out;
dst = &map->phys_map[irq->dest_id];
} else { } else {
u32 mda = irq->dest_id << (32 - map->ldr_bits); u32 mda = irq->dest_id << (32 - map->ldr_bits);
......
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