Jeremy Fitzhardinge wrote:
>>> Were there any other errors/warnings printed here?
>>
>> Nope.  Just some whitespace.
> 
> Are you sure?  Could you send a full xm dmesg log output?  The crash is 
> from a BUG() caused by a failing hypercall.  Since you have compiled Xen 
> with debug enabled, it should have printed something about why it was 
> failing the hypercall.

Unfortunately, I included the entire dmesg output from that xm create 
run.  Here's more of the transcript in case it's useful:

http://www.theshore.net/~caker/xen/pvops-bug1/log.txt

Although, looking at it again, I did miss this line:

(XEN) mm.c:645:d341 Non-privileged (341) attempt to map I/O space 000d2e50

> For reference:
> 
> $ gdb 2.6.26-rc8-linode11 GNU gdb Fedora (6.8-10.fc9)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later 
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i386-redhat-linux-gnu"...
> (no debugging symbols found)
> (gdb) x/i 0x00000000c0103b55                        <- note: need to add 
> 0x to start
> 0xc0103b55 <make_lowmem_page_readonly+85>:    ud2a   (gdb) disassemble 
> make_lowmem_page_readonly
> Dump of assembler code for function make_lowmem_page_readonly:
> 0xc0103b00 <make_lowmem_page_readonly+0>:    push   %ebp
> 0xc0103b01 <make_lowmem_page_readonly+1>:    mov    %eax,%ebp
> 0xc0103b03 <make_lowmem_page_readonly+3>:    push   %edi

Cool, thanks :)

-Chris

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