From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754593Ab0ASWG6 (ORCPT ); Tue, 19 Jan 2010 17:06:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753969Ab0ASWG4 (ORCPT ); Tue, 19 Jan 2010 17:06:56 -0500 Received: from hera.kernel.org ([140.211.167.34]:58076 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932099Ab0ASWG4 (ORCPT ); Tue, 19 Jan 2010 17:06:56 -0500 Message-ID: <4B562C64.7090303@kernel.org> Date: Tue, 19 Jan 2010 14:04:20 -0800 From: Yinghai Lu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-1.1.1 Thunderbird/3.0 MIME-Version: 1.0 To: Suresh Siddha CC: "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , "Eric W. Biederman" , LKML Subject: Re: [patch] x86, irq: don't block IRQ0_VECTOR..IRQ15_VECTOR's on all cpu's References: <1263932453.2814.52.camel@sbs-t61.sc.intel.com> <4B561D37.9040007@kernel.org> <1263936200.2814.55.camel@sbs-t61.sc.intel.com> In-Reply-To: <1263936200.2814.55.camel@sbs-t61.sc.intel.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/19/2010 01:23 PM, Suresh Siddha wrote: > On Tue, 2010-01-19 at 12:59 -0800, Yinghai Lu wrote: >> when PIC is used, if the user is setting /proc/irq/[0-15]/smp_affinity to cpu other than 0, >> we need to prevent that happen. > > If it is handled by i8259A_chip, then even today we won't be able to > change smp_affinity because of no "set_affinity" for that irq_chip. Then it is ok. Thanks Yinghai