KVM: ioapic: Record edge-triggered interrupts delivery status

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This patch fixes the bug discussed in
https://www.mail-archive.com/kvm@vger.kernel.org/msg109813.html

This patch uses a new field named irr_delivered to record the
delivery status of edge-triggered interrupts, and clears the
delivered interrupts in kvm_get_ioapic. So it has the same effect
of commit 0bc830b05c
("KVM: ioapic: clear IRR for edge-triggered interrupts at delivery")
while avoids the bug of Windows guests.

Signed-off-by: Wincy Van <fanwenyi0529@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

...

This commit is contained in:

Wincy Van 2014-12-24 11:14:29 +08:00 • committed by Marcelo Tosatti

parent ae548c5c80

commit 5bda6eed2e

2 changed files with 7 additions and 1 deletions

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7

arch/x86/kvm/ioapic.c

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1

arch/x86/kvm/ioapic.h

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