Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753736Ab1EIO2n (ORCPT ); Mon, 9 May 2011 10:28:43 -0400 Received: from vpn.id2.novell.com ([195.33.99.129]:34496 "EHLO vpn.id2.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751881Ab1EIO2m convert rfc822-to-8bit (ORCPT ); Mon, 9 May 2011 10:28:42 -0400 Message-Id: <4DC81635020000780004072A@vpn.id2.novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.1 Date: Mon, 09 May 2011 15:28:37 +0100 From: "Jan Beulich" To: "Thomas Gleixner" , "Konrad Rzeszutek Wilk" Cc: "Ian Campbell" , "Kevin Tian" , "xen-devel@lists.xensource.com" , "mingo@redhat.com" , "linux-kernel@vger.kernel.org" , "hpa@zytor.com" Subject: Re: [PATCH v2 1/2] x86: skip migrating IRQF_PER_CPU irq in fixup_irqs References: <625BA99ED14B2D499DC4E29D8138F1505C8ED7F7E2@shsmsx502.ccr.corp.intel.com> <20110506135828.GC5500@dumpdata.com> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 840 Lines: 21 >>> On 09.05.11 at 14:39, Thomas Gleixner wrote: > On Fri, 6 May 2011, Konrad Rzeszutek Wilk wrote: >> On Fri, May 06, 2011 at 02:43:36PM +0800, Tian, Kevin wrote: >> > because Xen event chip silently fails the set_affinity ops, and >> > logically IRQF_PER_CPU should be recognized here. >> >> OK, so what if the set_affinity ops was implemented? > > An interrupt chip which has a set_affinity op should not mark > something per cpu, which implies that the irq CANNOT be moved. Why shouldn't it be possible o use the same "chip" for both per-CPU and "normal" IRQs? Jan -- 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/