Hey Dave and list,

I am the guy who is try to open the 64 bit vmcore dump with 64 bit xen kernel and 32 bit dom0 kernel. 

Finally, I have received the dom0 kernel with symbols, and I tried to open the vmcore with crash (I patched with your "special patch"). 

But I have a new problem,  the crash utility exits with an error  "could not read linux_banner string" 

<readmem: c034c000, KVADDR, "accessible check", 4, (ROE|Q), ffff82e4>
    addr: c034c000  paddr: 34c000  cnt: 4
<readmem: c034c000, KVADDR, "readstring characters", 1499, (ROE|Q), ffff72d0>
    addr: c034c000  paddr: 34c000  cnt: 1499
WARNING: cannot read linux_banner string
linux_banner:

crash32: boot/System.map-2.6.27.42-0.1.1.xs5.6.0.44.111158xen and vmcore-2010-09-15-19-29-03 do not match!
 
Have you seen these error message before ? and Thanks for any help and suggestion.

yours
Kevin F LI 

ps.
I attached the log file generated with "-d 31" option.