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Re: [Xen-users] pv_ops domU crashes on pv_ops dom0 (directly at boot)

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] pv_ops domU crashes on pv_ops dom0 (directly at boot)
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Tue, 19 Jan 2010 14:15:42 -0800
Cc: Markus Schuster <ml@xxxxxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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On 01/19/2010 09:43 AM, Pasi Kärkkäinen wrote:
GNU gdb 6.8-debian
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 "x86_64-linux-gnu"...
(gdb) x/i 0xffffffff8100930a
0xffffffff8100930a<hypercall_page+778>:   add    %al,(%rax)
(gdb) list *0xffffffff8100930a
No source file for address 0xffffffff8100930a.
Try running gdb in the kernel source directory to get the lines from the source 

Its the hypercall_page; there is no source, and no code either; the hypercall stubs are plugged in there at domain-build time. The hypercall is 24 (778/32), which is vcpu_op; not sure what's going on in this path.

But this is completely different from Markus's original bug report. How many vcpus are there? It may be getting the wrong cpu context (booting with a single vcpu would be simplest).


-- Pasi

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