----- "Feng LI" <funglee(a)gmail.com&gt; wrote: OK, so we're back to the same starting point, that being that it's evident that crash does not support 32-bit dom0 vmcores generated by a 64-bit hypervisor. The page referenced by the p2m_mfn pointer contains a set of mfn values that is needed to recreate the kernel's phys_to_machine_mapping[] array, which is needed to translate the kernel's pseudo-physical pfns to real machine physical addresses (mfns). Clearly something is out-of-sync given the contents of the page at bf969000, but I have no idea what that could be. In any case, without that essential key, I've pretty much run out of things to suggest. Again, I invite the other Xen users/developers on this list to make any suggestions, or develop support for this configuration. I actually don't think it would require a major update, but it's not clear to me what the problem is. Dave