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From d52f76a894c5a6663ffbee71e020069a86a52989 Mon Sep 17 00:00:00 2001
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Message-Id: <d52f76a894c5a6663ffbee71e020069a86a52989.1387385113.git.minovotn@redhat.com>
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From: Stefan Hajnoczi <stefanha@redhat.com>
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Date: Wed, 11 Dec 2013 09:55:07 +0100
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Subject: [PATCH] virtio_pci: fix level interrupts with irqfd
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RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
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Message-id: <1386755707-8033-1-git-send-email-stefanha@redhat.com>
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Patchwork-id: 56157
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O-Subject: [RHEL7 qemu-kvm PATCH] virtio_pci: fix level interrupts with irqfd
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Bugzilla: 1035132
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
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From: "Michael S. Tsirkin" <mst@redhat.com>
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BZ: 1035132
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BZ: 1035150
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Brew: https://brewweb.devel.redhat.com/taskinfo?taskID=6700088
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Upstream: merged
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commit 62c96360ae7f2c7a8b029277fbb7cb082fdef7fd
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virtio-pci: fix level interrupts
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only helps systems without irqfd: on systems with irqfd support we
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passed in flag requesting irqfd even when msix is disabled.
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As a result, for level interrupts we didn't install an fd handler so
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unmasking an fd had no effect.
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Fix this up.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 23fe2b3f9e7df8da53ac1bc32c6875254911d7f4)
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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---
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hw/virtio/virtio-pci.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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Signed-off-by: Michal Novotny <minovotn@redhat.com>
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---
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hw/virtio/virtio-pci.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
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index ba8848f..6f5c434 100644
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--- a/hw/virtio/virtio-pci.c
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+++ b/hw/virtio/virtio-pci.c
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@@ -805,8 +805,7 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
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break;
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}
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- r = virtio_pci_set_guest_notifier(d, n, assign,
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- kvm_msi_via_irqfd_enabled());
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+ r = virtio_pci_set_guest_notifier(d, n, assign, with_irqfd);
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if (r < 0) {
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goto assign_error;
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}
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--
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1.7.11.7
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