Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933140Ab2JSXg4 (ORCPT ); Fri, 19 Oct 2012 19:36:56 -0400 Received: from terminus.zytor.com ([198.137.202.10]:35577 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932206Ab2JSXg4 (ORCPT ); Fri, 19 Oct 2012 19:36:56 -0400 Message-ID: <5081E414.6080004@zytor.com> Date: Fri, 19 Oct 2012 16:36:52 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121009 Thunderbird/16.0 MIME-Version: 1.0 To: Yinghai Lu CC: Suresh Siddha , rrl125@gmail.com, fa.linux.kernel@googlegroups.com, "Berck E. Nash" , "linux-kernel@vger.kernel.org" Subject: Re: x2apic boot failure on recent sandy bridge system References: <1350687838.6017.10.camel@sbsiddha-desk.sc.intel.com> In-Reply-To: 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 Content-Length: 1415 Lines: 39 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. -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/