QEMU properly reverts queue_enable to 0 on device reset as of:
commit 75fd6f13af8513f1e14add754549141e415f8704
Author: Gerd Hoffmann <kra...@redhat.com>
Date: Thu Jan 28 16:08:07 2016 +0100
virtio-pci: call pci reset variant when guest requests reset.
Signed-off-by: Ladi Prosek <lpro...@redhat.com>
---
src/drivers/bus/virtio-pci.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/src/drivers/bus/virtio-pci.c b/src/drivers/bus/virtio-pci.c
index 1fcf9ba..89c4512 100644
--- a/src/drivers/bus/virtio-pci.c
+++ b/src/drivers/bus/virtio-pci.c
@@ -347,10 +347,7 @@ int vpm_find_vqs(struct virtio_pci_modern_device *vdev,
/* Check if queue is either not available or already active. */
size = vpm_ioread16(vdev, &vdev->common, COMMON_OFFSET(queue_size));
- /* QEMU has a bug where queues don't revert to inactive on device
- * reset. Skip checking the queue_enable field until it is fixed.
- */
- if (!size /*|| vpm_ioread16(vdev, &vdev->common.queue_enable)*/)
+ if (!size || vpm_ioread16(vdev, &vdev->common,
COMMON_OFFSET(queue_enable)))
return -ENOENT;
if (size & (size - 1)) {
--
2.7.4
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