Searched hist:d542800d1edc62f63f8a29cfa6bdd1a9536ae11c (Results 1 – 1 of 1) sorted by relevance
| /qemu/net/ |
| H A D | tap.c | d542800d1edc62f63f8a29cfa6bdd1a9536ae11c Fri Apr 06 18:51:25 UTC 2018 Brijesh Singh <brijesh.singh@amd.com> 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>
|