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linux-headers: sync vhost.h

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This patch brings the cross-endian vhost API to QEMU.

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>
This commit is contained in:
Greg Kurz 2015-06-17 15:23:29 +02:00 committed by Michael S. Tsirkin
parent 6a084ea39a
commit 332f64073b
1 changed files with 14 additions and 0 deletions
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linux-headers/linux/vhost.h
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@ -103,6 +103,20 @@ struct vhost_memory {
/* Get accessor: reads index, writes value in num */
#define VHOST_GET_VRING_BASE _IOWR(VHOST_VIRTIO, 0x12, struct vhost_vring_state)
/* Set the vring byte order in num. Valid values are VHOST_VRING_LITTLE_ENDIAN
* or VHOST_VRING_BIG_ENDIAN (other values return -EINVAL).
* The byte order cannot be changed while the device is active: trying to do so
* returns -EBUSY.
* This is a legacy only API that is simply ignored when VIRTIO_F_VERSION_1 is
* set.
* Not all kernel configurations support this ioctl, but all configurations that
* support SET also support GET.
*/
#define VHOST_VRING_LITTLE_ENDIAN 0
#define VHOST_VRING_BIG_ENDIAN 1
#define VHOST_SET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x13, struct vhost_vring_state)
#define VHOST_GET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x14, struct vhost_vring_state)
/* The following ioctls use eventfd file descriptors to signal and poll
* for events. */