Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752104AbaF0WOv (ORCPT ); Fri, 27 Jun 2014 18:14:51 -0400 Received: from mail.skyhub.de ([78.46.96.112]:57454 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750985AbaF0WOs (ORCPT ); Fri, 27 Jun 2014 18:14:48 -0400 Date: Sat, 28 Jun 2014 00:14:39 +0200 From: Borislav Petkov To: "Luck, Tony" Cc: Xie XiuQi , "Naveen N. Rao" , "Chen, Gong" , "joe@perches.com" , "m.chehab@samsung.com" , "arozansk@redhat.com" , "linux-acpi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Li Bin Subject: Re: [PATCH v3 4/9] ACPI, x86: Extended error log driver for x86 platform Message-ID: <20140627221439.GA21418@pd.tnic> References: <1382084624-10857-1-git-send-email-gong.chen@linux.intel.com> <1382084624-10857-5-git-send-email-gong.chen@linux.intel.com> <52612BA4.2060906@linux.vnet.ibm.com> <53AD0275.7020003@huawei.com> <20140627092227.GA23153@pd.tnic> <3908561D78D1C84285E8C5FCA982C28F3284BBB1@ORSMSX114.amr.corp.intel.com> <20140627211441.GA20305@nazgul.tnic> <3908561D78D1C84285E8C5FCA982C28F3284C082@ORSMSX114.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <3908561D78D1C84285E8C5FCA982C28F3284C082@ORSMSX114.amr.corp.intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 27, 2014 at 10:10:48PM +0000, Luck, Tony wrote: > I spoke too quickly. The only MCE for which we have recovery code are > those that hit in application code. So the processor that is trying to > do the printk() can't possibly be holding the locks. Other processors > might have held the lock at the time of the MCE - but they have all > returned from the handler at the time we try the printk - so they will > make progess and release the lock so that we can acquire it. That could explain why we're not seeing hangs left and right. :-) -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/