From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261334AbVFCQM3 (ORCPT ); Fri, 3 Jun 2005 12:12:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261352AbVFCQM3 (ORCPT ); Fri, 3 Jun 2005 12:12:29 -0400 Received: from colin.muc.de ([193.149.48.1]:33797 "EHLO mail.muc.de") by vger.kernel.org with ESMTP id S261334AbVFCQM0 (ORCPT ); Fri, 3 Jun 2005 12:12:26 -0400 Date: 3 Jun 2005 18:12:25 +0200 Date: Fri, 3 Jun 2005 18:12:25 +0200 From: Andi Kleen To: YhLu Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.12-rc5 is broken in nvidia Ck804 Opteron MB/with dual cor e dual way Message-ID: <20050603161225.GI1683@muc.de> References: <3174569B9743D511922F00A0C94314230A40399E@TYANWEB> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3174569B9743D511922F00A0C94314230A40399E@TYANWEB> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 02, 2005 at 02:33:06PM -0700, YhLu wrote: > So siblings should be in one core...? that make sense.... Yes. The whole terminology is confusing for historical reasons. If we started again with the naming game there would be probably different names. To make it even more confusing while it is different internally in the kernel, CPUID and /proc/cpuinfo fake them to the same to the world to be compatible with old software who e.g. reads this for licensing purposes. BTW I doubt these are related to the hang you are chasing because if you grep the kernel cpu_core_map is never used in the kernel at all except for cpuinfo. This means it is unlikely to cause any hangs. -Andi