After liveupgrading to snv_97, I cannot boot xVM (non-xVM boots fine).

* I used the DVD iso (md5sum was ok) for upgrade -- simple lucreate -n snv_97 
&& mount -H hsfs `lofiadm -a /path/to/b97dvd.iso` /mnt/cd && luupgrade ... && 
&& luactivate -n snv_97 && init 6
* I am running SXCE on a pure ZFS root.
* Hardware: Sun x2200 M2, 2x Quad AMD 2218, 8G ram

The problem seems to be with the ramdisk (xen.gz?):
NOTICE: mount: not a UFS magic number (0x0)

panic[cpu0]/thread=<>: cannot mount root path: /ramdisk:a

<> genunix:rootconf+122 () 
<> genunix:vfs_mountroot+65 ()
<> genunix:main+dd () 
<> unix:_locore_start+80 ()

<> are offsets.

# md5sum /boot/xen.gz
f28e8e2c8379efa128d69b9668ce7a1a  /boot/xen.gz
# md5sum /boot/amd64/xen.gz
94eca164ea0c67695bab1346ac8fea64  /boot/amd64/xen.gz

# uname -a
SunOS srv1 5.11 snv_97 i86pc i386 i86pc

Snippet from /rpool/boot/grub/menu.lst:
title snv_97
findroot (BE_snv_97,0,a)
bootfs rpool/ROOT/snv_97
kernel$ /platform/i86pc/kernel/$ISADIR/unix -B $ZFS-BOOTFS
module$ /platform/i86pc/$ISADIR/boot_archive

title snv_97 Solaris xVM
findroot (BE_snv_97,0,a)
bootfs rpool/ROOT/snv_97
kernel$ /boot/$ISADIR/xen.gz
module$ /platform/i86xpv/kernel/$ISADIR/unix 
/platform/i86xpv/kernel/$ISADIR/unix
module$ /platform/i86pc/$ISADIR/boot_archive

# zfs list
rpool                      523G   162G    42K  /rpool
rpool/ROOT                12.4G   162G    18K  legacy
rpool/ROOT/snv_95         70.4M   162G  7.70G  /.alt.tmp.b-TJ.mnt/
rpool/ROOT/snv_97         12.3G   162G  7.61G  /
rpool/ROOT/snv_97 at snv_97  4.72G      -  7.70G  -
rpool/dump                4.00G   162G  4.00G  -
rpool/export              2.83G   162G    19K  /export
rpool/export/home         2.83G   162G  2.83G  /export/home
rpool/swap                   4G   166G  1.30M  -
rpool/xvm                   19K   162G    19K  /xvm
rpool/zones                 18K   500G    18K  /zones

Anybody else experience problems with the xen-images after upgrading?
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