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| author | Wincy Van <fanwenyi0529@gmail.com> | 2014-12-24 11:14:29 +0800 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2015-03-10 10:37:43 -0300 |
| commit | 5bda6eed2e3626f40f2602a8fed72007f1fafaf8 (patch) | |
| tree | ddea5207022bd6dbf8e974dcbb6673374bc05106 /arch/x86/kvm/ioapic.h | |
| parent | ae548c5c806497b3495019f550f93dee03f6c15a (diff) | |
| download | linux-5bda6eed2e3626f40f2602a8fed72007f1fafaf8.tar.gz | |
KVM: ioapic: Record edge-triggered interrupts delivery status
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 0bc830b05c667218d703f2026ec866c49df974fc
("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>
Diffstat (limited to 'arch/x86/kvm/ioapic.h')
| -rw-r--r-- | arch/x86/kvm/ioapic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h index c2e36d934af4..38d8402ea65c 100644 --- a/arch/x86/kvm/ioapic.h +++ b/arch/x86/kvm/ioapic.h @@ -77,6 +77,7 @@ struct kvm_ioapic { struct rtc_status rtc_status; struct delayed_work eoi_inject; u32 irq_eoi[IOAPIC_NUM_PINS]; + u32 irr_delivered; }; #ifdef DEBUG |