libxl: remove device model "none" support from disk related functions

CD-ROM backend selection was partially based on the device model, this
is no longer needed since the device model "none" is now removed, so
HVM guests always have a device model.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ported over splitting libxl.c into libxl_disk.c

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 1dfb85b9618c7d4c39000d063f19a67de4dbf5d1..526eb70bf412d270f62ad25bb1b475c280139eb2 100644 (file)
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2064,9 +2064,7 @@ int libxl__device_disk_setdefault(libxl__gc *gc, libxl_device_disk *disk,
 
     /* Force Qdisk backend for CDROM devices of guests with a device model. */
     if (disk->is_cdrom != 0 &&
-        libxl__domain_type(gc, domid) == LIBXL_DOMAIN_TYPE_HVM &&
-        libxl__device_model_version_running(gc, domid) !=
-        LIBXL_DEVICE_MODEL_VERSION_NONE) {
+        libxl__domain_type(gc, domid) == LIBXL_DOMAIN_TYPE_HVM) {
         if (!(disk->backend == LIBXL_DISK_BACKEND_QDISK ||
               disk->backend == LIBXL_DISK_BACKEND_UNKNOWN)) {
             LOG(ERROR, "Backend for CD devices on HVM guests must be Qdisk");
@@ -2675,12 +2673,6 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk,
         goto out;
     }
 
-    if (dm_ver == LIBXL_DEVICE_MODEL_VERSION_NONE) {
-        LOG(ERROR, "Guests without a device model cannot use cd-insert");
-        rc = ERROR_FAIL;
-        goto out;
-    }
-
     disks = libxl_device_disk_list(ctx, domid, &num);
     for (i = 0; i < num; i++) {
         if (disks[i].is_cdrom && !strcmp(disk->vdev, disks[i].vdev))