Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0bc830b0 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: ioapic: clear IRR for edge-triggered interrupts at delivery 



This ensures that IRR bits are set in the KVM_GET_IRQCHIP result only if
the interrupt is still sitting in the IOAPIC.  After the next patches, it
avoids spurious reinjection of the interrupt when KVM_SET_IRQCHIP is
called.

Reviewed-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 0b10a1c8

virt/kvm/ioapic.c

+3 −0
Original line number Diff line number Diff line
@@ -288,6 +288,9 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status) 
	irqe.level = 1;

	irqe.shorthand = 0;



	if (irqe.trig_mode == IOAPIC_EDGE_TRIG)

		ioapic->irr &= ~(1 << irq);



	if (irq == RTC_GSI && line_status) {

		BUG_ON(ioapic->rtc_status.pending_eoi != 0);

		ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe,