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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2019-10-23 11:04:15 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-10-25 07:46:22 -0400 |
| commit | c5bd6d02e6eb6ae868abbcbeb5c3a3be8c5379a5 (patch) | |
| tree | bee9a761a1a4cddf8a5456d0f6d38a0ff66be3da /tests/libqos | |
| parent | 36d27d2120979db239230bb440c03d41dbe75165 (diff) | |
| download | qemu-c5bd6d02e6eb6ae868abbcbeb5c3a3be8c5379a5.zip qemu-c5bd6d02e6eb6ae868abbcbeb5c3a3be8c5379a5.tar.gz qemu-c5bd6d02e6eb6ae868abbcbeb5c3a3be8c5379a5.tar.bz2 | |
libqos: add missing virtio-9p feature negotiation
VIRTIO Device Initialization requires feature negotiation. The libqos
virtio-9p driver lacks feature negotiation and is therefore
non-compliant.
libqos tests acknowledge all feature bits advertised by the device,
except VIRTIO_F_BAD_FEATURE (which devices use to detect broken
drivers!) and VIRTIO_RING_F_EVENT_IDX (which is not implemented in
libqos and accepting it would break notifications).
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20191023100425.12168-7-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth" <thuth@redhat.com>
Diffstat (limited to 'tests/libqos')
| -rw-r--r-- | tests/libqos/virtio-9p.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tests/libqos/virtio-9p.c b/tests/libqos/virtio-9p.c index 8c9efce..77dbfb6 100644 --- a/tests/libqos/virtio-9p.c +++ b/tests/libqos/virtio-9p.c @@ -32,6 +32,12 @@ static void virtio_9p_cleanup(QVirtio9P *interface) static void virtio_9p_setup(QVirtio9P *interface) { + uint64_t features; + + features = qvirtio_get_features(interface->vdev); + features &= ~(QVIRTIO_F_BAD_FEATURE | (1ull << VIRTIO_RING_F_EVENT_IDX)); + qvirtio_set_features(interface->vdev, features); + interface->vq = qvirtqueue_setup(interface->vdev, alloc, 0); qvirtio_set_driver_ok(interface->vdev); } |