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XEN i386-PAE DomU under XEN x86-64 Dom0 doesnt work(panic: HYPERVISOR_mmu_update failed)

When trying to boot an i386 PAE kernel under a x86-64 Xen DomU i get this error (with a tr)

                     Loaded initial symtab at 0xc09a4a38, strtab at 0xc09d972c, # entries 12590
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 4.99.64 (INSTALL_XEN3PAE_DOMU) #0: Sun Jun 15 07:57:38 PDT 2008
total memory = 128 MB
avail memory = 115 MB
mainbus0 (root)
hypervisor0 at mainbus0: Xen version 3.2
vcpu0 at hypervisor0: AMD 686-class, 2475MHz, id 0x20fb1
vcpu0: 8 page colors
xenbus0 at hypervisor0: Xen Virtual Bus Interface
xencons0 at hypervisor0: Xen Virtual Console Driver
xencons0: using event channel 2
npx0 at hypervisor0: using exception 16
xenbus0: using event channel 1
xbd0 at xenbus0 id 768: Xen Virtual Block Device Interface
xennet0 at xenbus0 id 0: Xen Virtual Network Interface
xennet0: MAC address 00:16:3e:00:54:01
unknown type console at xenbus0 id 0 not configured
xbd0: 9789 MB, 512 bytes/sect x 20048000 sectors
raidattach: Asked for 8 units
Kernelized RAIDframe activated
Searching for RAID components...
RAIDframe: can't get label for dev md0 (22)
boot device: xbd0
root on md0a dumps on md0b
dump_misc_init: max_paddr = 0x8100000
mountroot: trying lfs...
mountroot: trying ffs...
root file system type: ffs
warning: no /dev/console
init: copying out flags `-s' 3
xpq_flush_queue: 3 entries
0x00000000338f4000: 0x0000000029044001
0x00000000338f4008: 0x0000000029053001
0x00000000338f4010: 0x000000002904a001
panic: HYPERVISOR_mmu_update failed

fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c038002c cs 9 eflags 246 cr2 0 ilevel 6
Stopped in pid 1.1 (init) at    netbsd:breakpoint+0x4:  popl    %ebp
db> tr
breakpoint(c042b55f,ca8c9b18,c0922700,c02f38c5,0,5,0,0,ca8c9b28,3) at netbsd:bre
panic(c042cefa,338f4010,0,2904a001,0,0,ca8c9bbc,c02f276c,ca8c9d18,0) at netbsd:p
xpq_flush_queue(0,c041938c,64,ca8c9bb0,0,1f,0,ffff0011,6,338f4018) at netbsd:xpq
0) at netbsd:xpq_queue_tlb_flush+0x19
tlbflush(338f4010,0,2904a001,0,ca079f04,c09a2c40,ca0702a0,ca8c9da0,1,0) at netbs
pmap_load(1,ca8c9d2c,c0100788,c02a62b2,ca8c9d18,bf7ffffd,3,0,ffffffff,ffffffff) a
t netbsd:pmap_load+0x340
do_pmap_load(c02a62b2,ca8c9d18,bf7ffffd,3,0,ffffffff,ffffffff,0,b0717,ffffffff) a
t netbsd:do_pmap_load+0x16
copyout(ca0702a0,0,c010006b,c0100063,c010006b,0,0,0,0,0) at netbsd:copyout+0x48

I'm using Xen 3.2, I run other 386 PAE kernels and they work fine. Anyone any ideas?



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