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| author | Eugenio Pérez <eperezma@redhat.com> | 2023-09-15 19:08:36 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-10-04 18:15:06 -0400 |
| commit | 845ec38ae1578dd2d42ff15c9979f1bf44b23418 (patch) | |
| tree | 498e09d1a8f5a7da0a181dbf116d49587f3e5537 /net | |
| parent | f1085882d028e5a1b227443cd6e96bbb63d66f43 (diff) | |
| download | qemu-845ec38ae1578dd2d42ff15c9979f1bf44b23418.zip qemu-845ec38ae1578dd2d42ff15c9979f1bf44b23418.tar.gz qemu-845ec38ae1578dd2d42ff15c9979f1bf44b23418.tar.bz2 | |
vdpa net: follow VirtIO initialization properly at cvq isolation probing
This patch solves a few issues. The most obvious is that the feature
set was done previous to ACKNOWLEDGE | DRIVER status bit set. Current
vdpa devices are permissive with this, but it is better to follow the
standard.
Fixes: 152128d646 ("vdpa: move CVQ isolation check to net_init_vhost_vdpa")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230915170836.3078172-4-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/vhost-vdpa.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index b688877..939c984 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -1345,8 +1345,7 @@ static int vhost_vdpa_probe_cvq_isolation(int device_fd, uint64_t features, uint64_t backend_features; int64_t cvq_group; uint8_t status = VIRTIO_CONFIG_S_ACKNOWLEDGE | - VIRTIO_CONFIG_S_DRIVER | - VIRTIO_CONFIG_S_FEATURES_OK; + VIRTIO_CONFIG_S_DRIVER; int r; ERRP_GUARD(); @@ -1361,15 +1360,22 @@ static int vhost_vdpa_probe_cvq_isolation(int device_fd, uint64_t features, return 0; } + r = ioctl(device_fd, VHOST_VDPA_SET_STATUS, &status); + if (unlikely(r)) { + error_setg_errno(errp, -r, "Cannot set device status"); + goto out; + } + r = ioctl(device_fd, VHOST_SET_FEATURES, &features); if (unlikely(r)) { - error_setg_errno(errp, errno, "Cannot set features"); + error_setg_errno(errp, -r, "Cannot set features"); goto out; } + status |= VIRTIO_CONFIG_S_FEATURES_OK; r = ioctl(device_fd, VHOST_VDPA_SET_STATUS, &status); if (unlikely(r)) { - error_setg_errno(errp, -r, "Cannot set status"); + error_setg_errno(errp, -r, "Cannot set device status"); goto out; } |