From: Greg Kurz <gkurz@linux.vnet.ibm.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>,
Thomas Huth <thuth@redhat.com>,
qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
Jason Wang <jasowang@redhat.com>
Subject: [Qemu-devel] [PATCH 1/6] linux-headers: sync vhost.h
Date: Wed, 17 Jun 2015 15:23:29 +0200 [thread overview]
Message-ID: <20150617132329.6560.8229.stgit@bahia.lab.toulouse-stg.fr.ibm.com> (raw)
In-Reply-To: <20150617132323.6560.29432.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
This patch brings the cross-endian vhost API to QEMU.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
---
| 14 ++++++++++++++
1 file changed, 14 insertions(+)
--git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c656f61cfc75..ead86db91a08 100644
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -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. */
next prev parent reply other threads:[~2015-06-17 13:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-17 13:23 [Qemu-devel] [PATCH 0/6] vhost: cross-endian support Greg Kurz
2015-06-17 13:23 ` Greg Kurz [this message]
2015-06-17 13:23 ` [Qemu-devel] [PATCH 2/6] virtio: introduce virtio_legacy_is_cross_endian() Greg Kurz
2015-06-17 13:23 ` [Qemu-devel] [PATCH 3/6] vhost: set vring endianness for legacy virtio Greg Kurz
2015-06-17 13:23 ` [Qemu-devel] [PATCH 4/6] tap: add VNET_LE/VNET_BE operations Greg Kurz
2015-06-17 13:23 ` [Qemu-devel] [PATCH 5/6] vhost-net: tell tap backend about the vnet endianness Greg Kurz
2015-06-19 9:16 ` Thomas Huth
2015-06-19 9:45 ` Greg Kurz
2015-06-17 13:23 ` [Qemu-devel] [PATCH 6/6] vhost_net: re-enable when cross endian Greg Kurz
2015-06-17 15:10 ` [Qemu-devel] [PATCH 0/6] vhost: cross-endian support Michael S. Tsirkin
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