Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754316Ab1EKPj5 (ORCPT ); Wed, 11 May 2011 11:39:57 -0400 Received: from casper.infradead.org ([85.118.1.10]:33574 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754225Ab1EKPjo (ORCPT ); Wed, 11 May 2011 11:39:44 -0400 Subject: Re: [PATCH v2] x86, vt-d: enable x2apic opt out From: David Woodhouse To: Youquan Song Cc: "Song, Youquan" , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" , "mingo@elte.hu" , "tglx@linutronix.de" , "hpa@zytor.com" , "hpa@linux.intel.com" , "Kay, Allen M" , "Siddha, Suresh B" , "Liu, Kent" , "Sankaran, Rajesh" , "Mallick, Asit K" Date: Wed, 11 May 2011 16:39:38 +0100 In-Reply-To: <20110512033923.GA19708@linux-youquan.bj.intel.com> References: <1302764783-24491-1-git-send-email-youquan.song@intel.com> <1305126431.30435.163.camel@i7.infradead.org> <20110512033923.GA19708@linux-youquan.bj.intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.0.1 (3.0.1-1.fc15) Content-Transfer-Encoding: 7bit Message-ID: <1305128379.30435.171.camel@i7.infradead.org> Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 971 Lines: 24 On Thu, 2011-05-12 at 04:39 +0100, Youquan Song wrote: > The VT-d 1.3 version specification add this new feature because OEM > request it. If OEM platform has issues to support x2apic or BIOS is > buggy to support x2apic, there is alternative way to opt out x2apic. Why not just *fix* the BIOS? Why must we hard-code workarounds into the "hardware" specification to allow them to get away without doing their job competently? This is madness. Can't we just line up the substandard BIOS engineers against the wall, and shoot them? We should get Coreboot working on our new hardware as a matter of course, to catch up with our main competitor and ensure that our customers are not held hostage by these morons. -- dwmw2 -- 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/