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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-07-26 22:01:00 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 10:15:16 +0200 |
| commit | f52447261bc8c21dfd4635196e32d2da1352f589 (patch) | |
| tree | a0de6cefa7fbfdd07285bd60c4f61e4e2f2d4ed6 /arch/x86/kvm/lapic.c | |
| parent | KVM: Add irq ack notifier list (diff) | |
| download | linux-f52447261bc8c21dfd4635196e32d2da1352f589.tar.xz linux-f52447261bc8c21dfd4635196e32d2da1352f589.zip | |
KVM: irq ack notification
Based on a patch from: Ben-Ami Yassour <benami@il.ibm.com>
which was based on a patch from: Amit Shah <amit.shah@qumranet.com>
Notify IRQ acking on PIC/APIC emulation. The previous patch missed two things:
- Edge triggered interrupts on IOAPIC
- PIC reset with IRR/ISR set should be equivalent to ack (LAPIC probably
needs something similar).
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
CC: Amit Shah <amit.shah@qumranet.com>
CC: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 9fde0ac24268..be94f93a73f6 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -439,7 +439,7 @@ struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector, static void apic_set_eoi(struct kvm_lapic *apic) { int vector = apic_find_highest_isr(apic); - + int trigger_mode; /* * Not every write EOI will has corresponding ISR, * one example is when Kernel check timer on setup_IO_APIC @@ -451,7 +451,10 @@ static void apic_set_eoi(struct kvm_lapic *apic) apic_update_ppr(apic); if (apic_test_and_clear_vector(vector, apic->regs + APIC_TMR)) - kvm_ioapic_update_eoi(apic->vcpu->kvm, vector); + trigger_mode = IOAPIC_LEVEL_TRIG; + else + trigger_mode = IOAPIC_EDGE_TRIG; + kvm_ioapic_update_eoi(apic->vcpu->kvm, vector, trigger_mode); } static void apic_send_ipi(struct kvm_lapic *apic) |