s390: deprecate the non-ccw machine in 2.5

The non-ccw machine for s390 (s390-virtio) is not very well maintained
and caused several issues in the past:
- aliases like virtio-blk did not work for s390
- virtio refactoring failed due to long standing bugs (e.g.see
commit cb927b8a "s390-virtio: Accommodate guests using virtqueues too early")
- some features like memory hotplug will cause trouble due to virtio storage
  being above guest memory
- the boot loader bios no longer seems to work. the source code of that
  loader is also no longer maintained

2.4 changed the default to the ccw machine, let's deprecate the old
machine for 2.5.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1446811645-25565-1-git-send-email-borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c
index cebebb1c0ad6a821501e19a9355acbb5d1522ea4..51dc0a8aafaca762c76fe2be1b16ba2e670e875c 100644 (file)
--- a/hw/s390x/s390-virtio.c
+++ b/hw/s390x/s390-virtio.c
@@ -268,6 +268,10 @@ static void s390_init(MachineState *machine)
     hwaddr virtio_region_len;
     hwaddr virtio_region_start;
 
+    error_printf("WARNING\n"
+                 "The s390-virtio machine (non-ccw) is deprecated.\n"
+                 "It will be removed in 2.6. Please use s390-ccw-virtio\n");
+
     if (machine->ram_slots) {
         error_report("Memory hotplug not supported by the selected machine.");
         exit(EXIT_FAILURE);
@@ -334,7 +338,7 @@ static void s390_machine_class_init(ObjectClass *oc, void *data)
     NMIClass *nc = NMI_CLASS(oc);
 
     mc->alias = "s390";
-    mc->desc = "VirtIO based S390 machine";
+    mc->desc = "VirtIO based S390 machine (deprecated)";
     mc->init = s390_init;
     mc->reset = s390_machine_reset;
     mc->block_default_type = IF_VIRTIO;