[libvirt] Libvirt /proc/cpuinfo processing fails on Linux/Sparc

[Daniel P. Berrange]

On Mon, Feb 09, 2009 at 01:37:14PM +0000, Richard W.M. Jones wrote:
> Below is what /proc/cpuinfo looks like on an Ultrasparc T1 running
> Linux.
> 
> I haven't looked into it in detail yet, but the report from Dennis
> Gilmore is that this breaks every libvirt command.  Presumably we are
> parsing /proc/cpuinfo at libvirt startup ...

It shouldn't break libvirt startup AFAICT.  We use this info for the
virNodeInfo command obviously, but also when starting a new guest for
purpose of CPU pinning. The latter is probably better off with us using
numactl or a sysconf() macro determine max # of pCPUs available, since
we don't need the full socket,core, thread topology in that context.

> (Initially reported by Dennis Gilmore)

Don't suppose Dennis has a patch to add support for this ? He
mentioned he was going to work on one when this came up on IRC
a week or so back.

FWIW, we'll need to add logic to src/nodeinfo.c to make the
/proc/cpuinfo fields it looks for be architecture dependant
since this stuff varies across basically every architecture.
I expect ia64, ppc, s390, etc are all just as broken in this
regard.

Daniel
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