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| author | Brijesh Singh | 2018-04-06 20:51:25 +0200 |
|---|---|---|
| committer | Jason Wang | 2018-06-15 04:39:53 +0200 |
| commit | d542800d1edc62f63f8a29cfa6bdd1a9536ae11c (patch) | |
| tree | d77cc3daa8b3899bcf2aac17576d459eb7df231a /net/filter.c | |
| parent | Merge remote-tracking branch 'remotes/kraxel/tags/ui-20180614-pull-request' i... (diff) | |
| download | qemu-d542800d1edc62f63f8a29cfa6bdd1a9536ae11c.tar.gz qemu-d542800d1edc62f63f8a29cfa6bdd1a9536ae11c.tar.xz qemu-d542800d1edc62f63f8a29cfa6bdd1a9536ae11c.zip | |
tap: set vhostfd passed from qemu cli to non-blocking
A guest boot hangs while probing the network interface when
iommu_platform=on is used.
The following qemu cli hangs without this patch:
# $QEMU \
-netdev tap,fd=3,id=hostnet0,vhost=on,vhostfd=4 3<>/dev/tap67 4<>/dev/host-net \
-device virtio-net-pci,netdev=hostnet0,id=net0,iommu_platform=on,disable-legacy=on \
...
Commit: c471ad0e9bd46 (vhost_net: device IOTLB support) took care of
setting vhostfd to non-blocking when QEMU opens /dev/host-net but if
the fd is passed from qemu cli then we need to ensure that fd is set
to non-blocking.
Fixes: c471ad0e9bd46 ("vhost_net: device IOTLB support")
Cc: qemu-stable@nongnu.org
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net/filter.c')
0 files changed, 0 insertions, 0 deletions