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Re: [Xen-devel] [Patch] use full-size cpumask for vcpu-pin

To: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [Patch] use full-size cpumask for vcpu-pin
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Fri, 13 Aug 2010 14:21:57 +0100
Cc: Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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On 13/08/2010 14:15, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

> On 13/08/2010 14:11, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>> The difficulty is, as I understand it, how to express the mask "all
>> CPUs present and future".  Since the number of pcpus may be very
>> large.  The tools presumably shouldn't pass a kilobyte of 0xff :-).
> Since Xen discards any CPUs which are not online at the time of the
> setvcpuaffinity hypercall, expressing "all CPUs present and future" is a bit
> pointless.

Hm, no, I'm talking rubbish. Argh. Okay, his patch is fine then. :-D

You can check it in to xen-unstable-tools.hg.

 -- Keir

>  -- Keir

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