From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: Per-cpu patches on top of PDA stuff... Date: Wed, 20 Sep 2006 08:54:28 -0400 Message-ID: <1158756868.9633.0.camel@mulgrave.il.steeleye.com> References: <1158635617.21726.8.camel@localhost.localdomain> <450FA6FB.9020100@goop.org> <1158710822.2480.14.camel@localhost.localdomain> <200609200900.17193.ak@muc.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <200609200900.17193.ak@muc.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.osdl.org Errors-To: virtualization-bounces@lists.osdl.org To: Andi Kleen Cc: Andrew Morton , virtualization@lists.osdl.org, Ingo Molnar List-Id: virtualization@lists.linuxfoundation.org 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. James