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kvm: x86: Track irq vectors in ioapic->rtc_status.dest_map

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This allows backtracking later in case the rtc irq has been
moved to another vcpu/vector.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Joerg Roedel 2016-02-29 16:04:44 +01:00 committed by Paolo Bonzini
parent 9e4aabe2bb
commit 9daa50076f
2 changed files with 10 additions and 1 deletions
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7
arch/x86/kvm/ioapic.h
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@ -41,7 +41,14 @@ struct kvm_vcpu;
#endif
struct dest_map {
/* vcpu bitmap where IRQ has been sent */
DECLARE_BITMAP(map, KVM_MAX_VCPUS);
/*
* Vector sent to a given vcpu, only valid when
* the vcpu's bit in map is set
*/
u8 vectors[KVM_MAX_VCPUS];
};

4
arch/x86/kvm/lapic.c
View file

@ -914,8 +914,10 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
result = 1;
if (dest_map)
if (dest_map) {
__set_bit(vcpu->vcpu_id, dest_map->map);
dest_map->vectors[vcpu->vcpu_id] = vector;
}
if (apic_test_vector(vector, apic->regs + APIC_TMR) != !!trig_mode) {
if (trig_mode)