diff options
author | Avi Kivity <avi@qumranet.com> | 2008-08-17 09:03:46 -0400 |
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committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 04:15:19 -0400 |
commit | dc7404cea34ef997dfe89ca94d16358e9d29c8d8 (patch) | |
tree | f62ea13dc8a824f40543c4d690fbe1f3238a3084 /arch/x86/kvm/i8254.c | |
parent | 85428ac7c39ab5fff23b5d14ccb32941e9401285 (diff) |
KVM: Handle spurious acks for PIT interrupts
Spurious acks can be generated, for example if the PIC is being reset.
Handle those acks gracefully rather than flooding the log with warnings.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/i8254.c')
-rw-r--r-- | arch/x86/kvm/i8254.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 7d04dd3ef857..c842060c6c04 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c | |||
@@ -228,7 +228,7 @@ void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian) | |||
228 | irq_ack_notifier); | 228 | irq_ack_notifier); |
229 | spin_lock(&ps->inject_lock); | 229 | spin_lock(&ps->inject_lock); |
230 | if (atomic_dec_return(&ps->pit_timer.pending) < 0) | 230 | if (atomic_dec_return(&ps->pit_timer.pending) < 0) |
231 | WARN_ON(1); | 231 | atomic_inc(&ps->pit_timer.pending); |
232 | ps->irq_ack = 1; | 232 | ps->irq_ack = 1; |
233 | spin_unlock(&ps->inject_lock); | 233 | spin_unlock(&ps->inject_lock); |
234 | } | 234 | } |