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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2015-06-04 12:34:11 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-06-10 18:15:04 +0200 |
| commit | 3c185597c86b8cd0a07c46e7a5bd5aac28bb7200 (patch) | |
| tree | 5a72cf952a60188058c1e195da2a13fd67e31553 /hw/virtio/virtio.c | |
| parent | 24bfa207efb9b9d591552eefc1f414ff33ef0eac (diff) | |
| download | focaccia-qemu-3c185597c86b8cd0a07c46e7a5bd5aac28bb7200.tar.gz focaccia-qemu-3c185597c86b8cd0a07c46e7a5bd5aac28bb7200.zip | |
virtio: endianness checks for virtio 1.0 devices
Add code that checks for the VERSION_1 feature bit in order to make decisions about the device's endianness. This allows us to support transitional devices. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio/virtio.c')
| -rw-r--r-- | hw/virtio/virtio.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 8ac6156861..d37d27b4ea 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -903,7 +903,11 @@ static bool virtio_device_endian_needed(void *opaque) VirtIODevice *vdev = opaque; assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN); - return vdev->device_endian != virtio_default_endian(); + if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + return vdev->device_endian != virtio_default_endian(); + } + /* Devices conforming to VIRTIO 1.0 or later are always LE. */ + return vdev->device_endian != VIRTIO_DEVICE_ENDIAN_LITTLE; } static bool virtio_64bit_features_needed(void *opaque) |