From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@muc.de>
Subject: Re: Per-cpu patches on top of PDA stuff...
Date: 20 Sep 2006 18:09:05 +0200
Message-ID: <20060920160905.GA47657@muc.de>
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Date: Wed, 20 Sep 2006 18:09:05 +0200
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To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Andrew Morton <akpm@osdl.org>, virtualization@lists.osdl.org, Ingo Molnar <mingo@elte.hu>
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On Wed, Sep 20, 2006 at 08:54:28AM -0400, James Bottomley wrote:
> On Wed, 2006-09-20 at 09:00 +0200, Andi Kleen wrote:
> > boot CPU =3D=3D 0 should be true. You just can't assume anything about =
its
> > APIC ID, but we decouple APIC ID and logical processor id anyways.
> =

> No, it is not.  Voyager has fixed and immutable CPU IDs dependent on CPU
> position in the system.  If CPU 0 is missing or logically deconfigured,
> the boot CPU is definitely non zero.

As APIC ID (hard_smp_processor_id()) possible, but surely not as linux logi=
cal
 processor id (smp_processor_id()). That always starts with 0 and goes up.

-Andi