[Xen-devel] RE: pv_ops dom0 attempt

["Yu, Ke" <ke.yu@xxxxxxxxx>]

How many processors your platform have? We once observe an similar issue in a 
64 processors platform. The issue is gone after changing the CONFIG_NR_CPUS 
from 8 to 256.

Best Regards
Ke

-----Original Message-----
From: Jeremy Fitzhardinge [mailto:jeremy@xxxxxxxx] 
Sent: Saturday, September 19, 2009 8:27 AM
To: Christopher S. Aker
Cc: xen-devel >> xen devel; Pasi Kärkkäinen; Yu, Ke
Subject: Re: pv_ops dom0 attempt

On 09/18/09 13:03, Christopher S. Aker wrote:
> Decided to give pv_ops dom0 another go (from a few weeks ago).  Does
> pv_ops dom0 require an unstable hypervisor?  Here's what I get with a
> 64 bit 3.4.1 hypervisor and a dom0 kernel from a a recent clone of
> rebase/master:
>
> BUG: unable to handle kernel paging request at 82c64bbd
> IP: [<c14ad4cd>] acpi_processor_start+0x50d/0x762
> *pdpt = 00000009256e7007
> Oops: 0002 [#1] SMP
> last sysfs file:
> Modules linked in:

That's novel; I haven't seen that crash before.  Could you do a "list
*0xc14ad4cd" to work out what source line it hit.  What's your .config?

I wonder if this has to do with the external processor control stuff?

> Full boot log here: http://p.linode.com/2993
>  
> What is the recommended recipe for pv_ops dom0?

Pasi has been doing a good job keeping
http://wiki.xensource.com/xenwiki/XenParavirtOps up to date.

Thanks,
    J

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