Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933135Ab2JTAlw (ORCPT ); Fri, 19 Oct 2012 20:41:52 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:36495 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754601Ab2JTAlv (ORCPT ); Fri, 19 Oct 2012 20:41:51 -0400 MIME-Version: 1.0 In-Reply-To: <1350691333.6017.23.camel@sbsiddha-desk.sc.intel.com> References: <1350687838.6017.10.camel@sbsiddha-desk.sc.intel.com> <5081E414.6080004@zytor.com> <1350691333.6017.23.camel@sbsiddha-desk.sc.intel.com> Date: Fri, 19 Oct 2012 17:41:49 -0700 X-Google-Sender-Auth: Tmr3ab7pjXT8EQyReDUY-C4MJOY Message-ID: Subject: Re: x2apic boot failure on recent sandy bridge system From: Yinghai Lu To: Suresh Siddha Cc: "H. Peter Anvin" , rrl125@gmail.com, fa.linux.kernel@googlegroups.com, "Berck E. Nash" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2154 Lines: 57 On Fri, Oct 19, 2012 at 5:02 PM, Suresh Siddha wrote: > On Fri, 2012-10-19 at 16:36 -0700, H. Peter Anvin wrote: >> On 10/19/2012 04:32 PM, Yinghai Lu wrote: >> > On Fri, Oct 19, 2012 at 4:03 PM, Suresh Siddha >> > wrote: >> >> On Fri, 2012-10-19 at 13:42 -0700, rrl125@gmail.com wrote: >> >>> Any update? The messages just seem to have stopped months ago. A >> >>> fallback would be nice, I have been booting the kernel with noa2xpic >> >>> for since kernel 3.2, and currently I am working with 3.6.2. >> >>> >> >>> If needed I can try to attempt modifying the patch to include >> >>> fallback, but I am probably not the best person to do it. >> >>> >> >> >> >> Are you referring to this commit that made into the mainline tree >> >> already? >> >> >> >> commit fb209bd891645bb87b9618b724f0b4928e0df3de >> >> Author: Yinghai Lu >> >> Date: Wed Dec 21 17:45:17 2011 -0800 >> >> >> >> x86, x2apic: Fallback to xapic when BIOS doesn't setup interrupt-remapping >> > >> > I think his system has DMAR table and cpu support x2apic, So kernel >> > will switch to x2apic, >> > >> > but somehow BIOS SMI handler has problem with x2apic. should be thinkpad W520? >> > >> >> Right, StinkPad W520 needs a quirk. > > yes. Yinghai, if you remember you had a T420 that didn't show the > problem. And someone in the bugzilla with T420 had the problem. And > their dmidecode is > https://launchpadlibrarian.net/109393850/dmidecode.txt > > What is the difference with your system? Bios I think is the same. 1.37 was working too, i updated it to 1.39 and it is still working. > > Can you see what we should check for in the dmi tables to black list > these systems? Can you post your T420's dmidecode to see the difference. > > https://bugzilla.kernel.org/show_bug.cgi?id=43054 post dmesg and dmidecode to that bug report. Thanks Yinghai -- 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/