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s390x: fix virtio feature bitmap 

The feature bitmap in the s390 virtio machine is little endian. To
address for that, we need to bswap the values after reading them out.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Alexander Graf 2011-04-04 16:32:10 +02:00 committed by Aurelien Jarno
parent 7b3da90304
commit 8f16753fd6
1 changed files with 2 additions and 2 deletions
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4
hw/s390-virtio-bus.c
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@ -223,7 +223,7 @@ void s390_virtio_device_sync(VirtIOS390Device *dev)
cur_offs += num_vq * VIRTIO_VQCONFIG_LEN; cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
/* Sync feature bitmap */ /* Sync feature bitmap */
stl_phys(cur_offs, dev->host_features); stl_phys(cur_offs, bswap32(dev->host_features));
dev->feat_offs = cur_offs + dev->feat_len; dev->feat_offs = cur_offs + dev->feat_len;
cur_offs += dev->feat_len * 2; cur_offs += dev->feat_len * 2;
@ -246,7 +246,7 @@ void s390_virtio_device_update_status(VirtIOS390Device *dev)
/* Update guest supported feature bitmap */ /* Update guest supported feature bitmap */
features = ldl_phys(dev->feat_offs); features = bswap32(ldl_phys(dev->feat_offs));
if (vdev->set_features) { if (vdev->set_features) {
vdev->set_features(vdev, features); vdev->set_features(vdev, features);
} }