b7616307b7
Include SLE feature requests, misc upstream stable bug fixes, and repair Jira feature references OBS-URL: https://build.opensuse.org/request/show/762845 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=521
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From: "Michael S. Tsirkin" <mst@redhat.com>
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Date: Fri, 13 Dec 2019 09:22:48 -0500
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Subject: virtio: update queue size on guest write
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Git-commit: d0c5f643383b9e84316f148affff368ac33d75b9
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Some guests read back queue size after writing it.
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Update the size immediatly upon write otherwise
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they get confused.
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In particular this is the case for seabios.
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Reported-by: Roman Kagan <rkagan@virtuozzo.com>
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Suggested-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
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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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Signed-off-by: Bruce Rogers <brogers@suse.com>
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---
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hw/virtio/virtio-pci.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
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index c6b47a9c7385195a9e9bed074040..e5c759e19eb57cfff1051ca03e84 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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@@ -1256,6 +1256,8 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr,
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break;
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case VIRTIO_PCI_COMMON_Q_SIZE:
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proxy->vqs[vdev->queue_sel].num = val;
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+ virtio_queue_set_num(vdev, vdev->queue_sel,
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+ proxy->vqs[vdev->queue_sel].num);
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break;
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case VIRTIO_PCI_COMMON_Q_MSIX:
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msix_vector_unuse(&proxy->pci_dev,
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