kern/44360: Booting on a Tyan motherboard with dual Xeon, under Xen, crashes

[explorer%flame.org@localhost]

>Number:         44360
>Category:       kern
>Synopsis:       Booting on a Tyan motherboard with dual Xeon, under Xen, 
>crashes
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 09 09:50:00 +0000 2011
>Originator:     Michael Graff
>Release:        NetBSD 5
>Organization:
>Environment:
dual, dual core Xeon. Can't boot for exact uname output.
>Description:
When booting on this new (for me) machine, under Xen, I get a crash:

Stopped in pid 0.1 (system) at netbsd:breakbpoint+0x5: leave
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x242
xpq_flush_queue() at netbsd:xpq_flush_queue+0xaf
pmap_enter_ma() at netbsd:pmap_kenter_ma+0xbc
x86_mem_add_mapping() at netbsd:x86_mem_add_mapping+0x13a
acpi_md_osMapMemory() at netbsd:AcpiOsMapMemory+0x19
AcpiTbParseRootTable() at netbsd:AcpiTbParseRootTable+0x70
acpi_probe() at netbsd:acpi_probe+0x7d
...


>How-To-Repeat:

>Fix: