From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Subject: Re: [Bug #11224] Only three cores found on quad-core machine. Date: Wed, 8 Oct 2008 02:18:18 +1100 Message-ID: <200810080218.18898.nickpiggin@yahoo.com.au> References: <0pOgGB.A.uLG.E475IB@wind> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: "Rafael J. Wysocki" Cc: Linux Kernel Mailing List , Kernel Testers List , Dave Jones On Sunday 05 October 2008 04:32, Rafael J. Wysocki wrote: > This message has been generated automatically as a part of a report > of recent regressions. > > The following bug entry is on the current list of known regressions > from 2.6.26. Please verify if it still should be listed and let me know > (either way). > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11224 > Subject : Only three cores found on quad-core machine. > Submitter : Dave Jones > Date : 2008-08-01 18:15 (65 days old) > References : http://marc.info/?l=linux-kernel&m=121761475224719&w=4 Dave, is your CPU2 getting stuck in calibrate_delay? Can you still reproduce the bug? What if you boot the kernel with lpj= in order to skip the calibrate_delay code? If that helps, can you try adding some printks to narrow down where it is getting stuck?