Hello Itsuro,

I have only briefly scanned your patch, and find it very
interesting.  I am not at all familiar with the hypervisor
code, but I do have a couple simple questions at this point:

1. Is it necessary to create a separate "xencrash"
   binary?  Would it be possible to create a single
   crash binary that can be used for both vmlinux
   and xen-syms sessions?

Sorry about this -- I missed the following two parts of
the Makefile and main.c patches!

+
+xencrash: crash
+       cp -f crash xencrash
 

+       if (STREQ(pc->program_name, "xencrash"))
+               pc->flags |= XEN_HYPER;

However, given the above, I wonder whether it would be possible
to postpone the setting of the XEN_HYPER flag from the
setup_environment() function until later on in main() when
the command line arguments are parsed?  Wouldn't it be possible
to recognize that the xen-syms object file is the hypervisor
binary, and to set the XEN_HYPER flag at that point?

Thanks,
  Dave

2. Can you make it work with a live hypervisor system
   in the same way the crash works with a live Linux
   kernel?

Thanks,
  Dave