While running dbench inside an hvm domain I received the following on the 
console:
(XEN) Invalid CR3 value=10f780000domain_crash_sync called from vmx.c:1679
(XEN) Domain 5 (vcpu#1) crashed on cpu#4:
(XEN) ----[ Xen-3.0-unstable x86_64 debug=n Not tainted ]----
(XEN) CPU: 4
(XEN) RIP: 0010:[<ffffffff8017680c>]
(XEN) RFLAGS: 0000000000000293 CONTEXT: hvm
(XEN) rax: 000000010f780000 rbx: 0000000000000001 rcx: 0000000000000000
(XEN) rdx: ffff81010f780000 rsi: 0000000000000000 rdi: ffff81010fc6db5c
(XEN) rbp: ffffffff803f3000 rsp: ffff81010fc6fb48 r8: 0000000000000000
(XEN) r9: 0000000000000000 r10: 0000000000000000 r11: 0000000000000000
(XEN) r12: ffff81010fb39a80 r13: 0000000000000000 r14: ffff81010fc6d510
(XEN) r15: ffff81010fc66ac0 cr0: 000000008005003b cr4: 00000000000006e0
(XEN) cr3: 000000015f4c1000 cr2: 0000000000000000
(XEN) ds: 0018 es: 0018 fs: 0000 gs: 0000 ss: 0018 cs: 0010
The domain was running with 4 VCPUs and had previously completed the test on a 
single VCPU and 2 VCPU configurations. The domain was running a baremetal 
2.6.16.29 kernel. Output from 'xm info' is:
host : x460c
release : 2.6.16.29-xen0-up
version : #1 Tue Sep 19 16:20:47 CDT 2006
machine : x86_64
nr_cpus : 16
nr_nodes : 1
sockets_per_node : 4
cores_per_socket : 2
threads_per_core : 2
cpu_mhz : 3002
hw_caps : 
bfebfbff:20100800:00000000:00000180:000065bd:00000000:00000001
total_memory : 14335
free_memory : 13633
xen_major : 3
xen_minor : 0
xen_extra : -unstable
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p 
hvm-3.0-x86_64
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : Tue Sep 19 08:26:47 2006 +0100 11536:041be3f6b38e
cc_compiler : gcc version 4.1.0 (SUSE Linux)
cc_compile_by : root
cc_compile_domain : ltc.austin.ibm.com
cc_compile_date : Tue Sep 19 16:15:52 CDT 2006
xend_config_format : 2
-- 
Karl Rister
IBM Linux Performance Team
kmr@xxxxxxxxxx
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