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ioapic: coalesce level interrupts 

If a level-triggered interrupt goes down and back up before the
corresponding EOI, it should be coalesced.  This fixes one testcase
in kvm-unit-tests' ioapic.flat.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-07-30 10:19:24 +02:00
parent f536f11242
commit c5955a561c
1 changed files with 3 additions and 1 deletions
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4
hw/intc/ioapic.c
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@ -98,7 +98,9 @@ static void ioapic_set_irq(void *opaque, int vector, int level)
/* level triggered */ /* level triggered */
if (level) { if (level) {
s->irr |= mask; s->irr |= mask;
ioapic_service(s); if (!(entry & IOAPIC_LVT_REMOTE_IRR)) {
ioapic_service(s);
}
} else { } else {
s->irr &= ~mask; s->irr &= ~mask;
} }