SLES 12 PV domU

[Harry Waddell <waddell%caravaninfotech.com@localhost>]

I apologize if this has already been asked. Even more so if asked by me. 
I've been trying to get SLES 12 to boot as a PV domU ever since it 
was released. It works well enough as an HVM. ( although it does seem to 
hang more often than any of my PV domU's )

It does seem to work fine as a PV domU under linux. ( tested a while ago on a sles 12 dom0 )
  
The probe of the xenblk device seems to fail under 
Netbsd 7 ( branch latest ) + xentools 4.6.3. 

...
> [    5.467591] xen-vbd: registered block device major 202
> [    5.467623] blk_queue_max_segments: set to minimum 1
> [    5.467627] blkfront: xvda: flush diskcache: enabled
> [    5.469579] alg: No test for crc32 (crc32-pclmul)
> [   10.564068] xenbus_probe: Waiting for devices to initialise: xenbus_probe: 295s...
> [   10.564091] xenbus_probe: Waiting for devices to initialise: xenbus_probe: 295s...
> [   15.564069] xenbus_probe: 290s...xenbus_probe:
> 290s...xenbus_probe: 285s...
...
> [  300.564108] xenbus_probe: 5s...xenbus_probe: 0s...xenbus_probe:
> [  305.564101] xenbus_probe: Device not ready: device/vbd/51712
> [  305.564137] xenbus_probe: 0s...xenbus_probe:
> [  305.564195] ------------[ cut here ]------------
> [  305.564213] WARNING: CPU: 0 PID: 71 at ../kernel/module.c:3457
> load_module+0x135b/0x1c70() [  305.564227] Device driver xenblk
> initialization / probe took 300104 ms to complete, report this
> [  305.564232] Modules linked in: st sd_mod sr_mod af_packet sunrpc
> crct10dif_pclmul crc32_pclmul crc32c_intel xennet(+) xenblk cdrom
> ghash_clmulni_intel(X) cryptd scsi_dh_rdac scsi_dh_emc scsi_dh_alua
> scsi_dh scsi_mod [  305.564277] Supported: Yes [  305.564283] CPU: 0
> PID: 71 Comm: udevd Tainted: G              X 3.12.28-4-xen #1
> [  305.564288] Hardware name: Xen 4.6.3 PV guest [  305.564293]
> 0000000000000009 ffffffff804abee8 ffff8800b2149d58 ffffffff80031b17
...


I can keep running it as an HVM, but if I'm missing something [wouldn't be the first time], 
please let me know as I'd much rather use a PV domU instead. 

Here's the config file: 

kernel="/opt/export/sles-12/boot/x86_64/vmlinuz-xen"
ramdisk="/opt/export/sles-12/boot/x86_64/initrd-xen"
root=""
extra="ip=10.8.7.88::10.8.7.1:255.255.255.0:pbi-s12-test::none inst.repo=http://10.8.6.13/sles-12/";

memory=3072
vcpus=1
name="s12-test"

vif=['mac=00:16:3e:73:00:91:a4,bridge=bridge0']
disk=['phy:/dev/mapper/vg00-s12_test,xvda,w']

Thanks, 

Harry Waddell