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Date: Thu, 25 Sep 2008 14:54:39 +0300 From: Avi Kivity <avi@...hat.com> To: linux-kernel@...r.kernel.org Cc: kvm@...r.kernel.org, Avi Kivity <avi@...ranet.com> Subject: [PATCH 07/39] KVM: Handle spurious acks for PIT interrupts From: Avi Kivity <avi@...ranet.com> 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@...ranet.com> --- 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 7d04dd3..c842060 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) irq_ack_notifier); spin_lock(&ps->inject_lock); if (atomic_dec_return(&ps->pit_timer.pending) < 0) - WARN_ON(1); + atomic_inc(&ps->pit_timer.pending); ps->irq_ack = 1; spin_unlock(&ps->inject_lock); } -- 1.6.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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