From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759740Ab2EIPXl (ORCPT ); Wed, 9 May 2012 11:23:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:14637 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756460Ab2EIPXk (ORCPT ); Wed, 9 May 2012 11:23:40 -0400 Message-ID: <4FAA8BCC.5000704@redhat.com> Date: Wed, 09 May 2012 17:22:52 +0200 From: Igor Mammedov User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: shuahkhan@gmail.com CC: linux-kernel@vger.kernel.org, rob@landley.net, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, luto@mit.edu, suresh.b.siddha@intel.com, avi@redhat.com, a.p.zijlstra@chello.nl, johnstul@us.ibm.com, arjan@linux.intel.com, linux-doc@vger.kernel.org Subject: Re: [PATCH 1/5] Fix soft-lookup in stop machine on secondary cpu bring up References: <1336559102-28103-1-git-send-email-imammedo@redhat.com> <1336559102-28103-2-git-send-email-imammedo@redhat.com> <1336575858.2498.7.camel@lorien2> In-Reply-To: <1336575858.2498.7.camel@lorien2> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/09/2012 05:04 PM, Shuah Khan wrote: > On Wed, 2012-05-09 at 12:24 +0200, Igor Mammedov wrote: >> When bringing up cpuX1, it could stall in start_secondary >> before setting cpu_callin_mask for more than 5 sec. That forces >> do_boot_cpu() to give up on waiting and go to error return path >> printing messages: >> pr_err("CPU%d: Stuck ??\n", cpuX1); > > I am seeing this with the linux-next May 7th build on my laptop HP > EliteBook 8440p during boot. Could this problem be not specific to virt > envs.? Anybody else seeing it? I could only guess that on bare metal SMI or other firmware issue may interfere with AP boot. Could you test if this patch-set fixes issue for you? And do you see the same problem during suspend/resume (assuming that it's booted without problem)? -- ----- Igor