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[Qemu-devel] [PATCH v2 2/3] linux-headers: sync vhost.h
From: |
Greg Kurz |
Subject: |
[Qemu-devel] [PATCH v2 2/3] linux-headers: sync vhost.h |
Date: |
Thu, 02 Apr 2015 16:04:07 +0200 |
User-agent: |
StGit/0.17-dirty |
This patch brings the cross-endian vhost API to QEMU.
Signed-off-by: Greg Kurz <address@hidden>
---
linux-headers/linux/vhost.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c656f61..e040bcb 100644
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -47,6 +47,11 @@ struct vhost_vring_addr {
__u64 log_guest_addr;
};
+struct vhost_vring_endian {
+ unsigned int index;
+ bool is_big_endian;
+};
+
struct vhost_memory_region {
__u64 guest_phys_addr;
__u64 memory_size; /* bytes */
@@ -103,6 +108,9 @@ 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 endianness for the ring (legacy virtio only) */
+#define VHOST_SET_VRING_ENDIAN_LEGACY _IOW(VHOST_VIRTIO, 0x13, struct
vhost_vring_endian)
+
/* The following ioctls use eventfd file descriptors to signal and poll
* for events. */
@@ -126,6 +134,8 @@ struct vhost_memory {
#define VHOST_F_LOG_ALL 26
/* vhost-net should add virtio_net_hdr for RX, and strip for TX packets. */
#define VHOST_NET_F_VIRTIO_NET_HDR 27
+/* the vring endianness can be explicitely set (legacy virtio only). */
+#define VHOST_F_SET_ENDIAN_LEGACY 28
/* VHOST_SCSI specific definitions */