Add a qemu feature flag for unix socket migration.

Signed-off-by: NChris Lalancette <clalance@redhat.com>

src/qemu/qemu_conf.c

@@ -892,6 +892,8 @@ static unsigned int qemudComputeCmdFlags(const char *help,
     if (version >= 10000) {
         flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP;
         flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC;
+        if (version >= 12000)
+            flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_UNIX;
     } else if (kvm_version >= 79) {
         flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP;
         if (kvm_version >= 80)

src/qemu/qemu_conf.h

@@ -70,6 +70,7 @@ enum qemud_cmd_flags {
     QEMUD_CMD_FLAG_MEM_PATH      = (1 << 18), /* mmap'ped guest backing supported */
     QEMUD_CMD_FLAG_DRIVE_SERIAL  = (1 << 19), /* -driver serial=  available */
     QEMUD_CMD_FLAG_XEN_DOMID     = (1 << 20), /* -xen-domid (new style xen integration) */
+    QEMUD_CMD_FLAG_MIGRATE_QEMU_UNIX = (1 << 21), /* Does qemu support unix domain sockets for migration? */
 };
 
 /* Main driver state */