qemu/hw/virtio
Greg Kurz 46f70ff148 vhost: simplify vhost_needs_vring_endian()
After the call to virtio_vdev_has_feature(), we only care for legacy
devices, so we don't need the extra check in virtio_is_big_endian().

Also the device_endian field is always set (VIRTIO_DEVICE_ENDIAN_UNKNOWN
may only happen on a virtio_load() path that cannot lead here), so we
don't need the assert() either.

This open codes the device_endian checking in vhost_needs_vring_endian().
It also adds a comment to explain the logic, as recent reviews showed the
cross-endian tweaks aren't that obvious.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-02-16 12:05:18 +02:00
..
dataplane vring: slim down allocation of VirtQueueElements 2016-02-06 20:44:08 +02:00
Makefile.objs dataplane: endianness-aware accesses 2015-02-16 15:07:16 +00:00
vhost-backend.c virtio: Clean up includes 2016-01-29 15:07:23 +00:00
vhost-user.c virtio: Clean up includes 2016-01-29 15:07:23 +00:00
vhost.c vhost: simplify vhost_needs_vring_endian() 2016-02-16 12:05:18 +02:00
virtio-balloon.c qapi: Drop unused 'kind' for struct/enum visit 2016-02-08 17:29:57 +01:00
virtio-bus.c virtio: Clean up includes 2016-01-29 15:07:23 +00:00
virtio-mmio.c virtio: Clean up includes 2016-01-29 15:07:23 +00:00
virtio-pci.c virtio: Clean up includes 2016-01-29 15:07:23 +00:00
virtio-pci.h 9pfs: introduce V9fsVirtioState 2016-01-12 11:04:14 +05:30
virtio-rng.c virtio: move allocation to virtqueue_pop/vring_pop 2016-02-06 20:39:07 +02:00
virtio.c virtio: combine write of an entry into used ring 2016-02-06 20:44:08 +02:00