From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Cpupools and pdata_alloc
Date: Tue, 11 May 2010 19:41:37 +0100
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References: <AANLkTilmTmETcKO4aBLseQULUOUwTqP9QXOI3YPgq3YE@mail.gmail.com>
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To: George Dunlap <George.Dunlap@eu.citrix.com>, Juergen Gross <juergen.gross@ts.fujitsu.com>
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On 11/05/2010 18:25, "George Dunlap" <George.Dunlap@eu.citrix.com> wrote:

> Kier, out of curiosity, is there a reason init_idle_domain() (and thus
> schedule_init()) is called so early, before all of the cpus are up?
> Is it so that adding a cpu dynamically and at boot (which needs to do
> in it, add an idle vcpu, &c) all take the same codepath?

Well, once secondary CPUs are fully up they are of course running their
respective idle VCPUs, so we can't call schedule_init() very late. The right
thing to do is dynamically allocate state as CPUs are brought online -- and
potentially free that state when CPUs are taken offline. Which is pretty
much the direction the code points in already.

 -- Keir