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Date: Sun, 23 Aug 2009 14:56:14 +0300 From: Avi Kivity <avi@...hat.com> To: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org Subject: [PATCH 15/46] KVM: ignore msi request if !level From: Michael S. Tsirkin <mst@...hat.com> Irqfd sets level for interrupt to 1 and then to 0. For MSI, check level so that a single message is sent. Signed-off-by: Michael S. Tsirkin <mst@...hat.com> Signed-off-by: Avi Kivity <avi@...hat.com> --- virt/kvm/irq_comm.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index 56e6961..a9d7fd1 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -139,7 +139,9 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level) else clear_bit(irq_source_id, irq_state); sig_level = !!(*irq_state); - } else /* Deal with MSI/MSI-X */ + } else if (!level) + return ret; + else /* Deal with MSI/MSI-X */ sig_level = 1; /* Not possible to detect if the guest uses the PIC or the -- 1.6.4.1 -- 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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