From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751336Ab0CAL5B (ORCPT ); Mon, 1 Mar 2010 06:57:01 -0500 Received: from queueout02-winn.ispmail.ntl.com ([81.103.221.56]:18099 "EHLO queueout02-winn.ispmail.ntl.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751192Ab0CAL5A (ORCPT ); Mon, 1 Mar 2010 06:57:00 -0500 X-Greylist: delayed 2054 seconds by postgrey-1.27 at vger.kernel.org; Mon, 01 Mar 2010 06:56:54 EST From: Ian Campbell To: Yinghai Lu Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu, linux-tip-commits@vger.kernel.org, "Eric W. Biederman" , Jeremy Fitzhardinge In-Reply-To: <4B881097.1050505@kernel.org> References: <20100207210250.GB8256@jenkins.home.ifup.org> <4B881097.1050505@kernel.org> Content-Type: text/plain; charset="UTF-8" Date: Mon, 01 Mar 2010 11:22:25 +0000 Message-ID: <1267442545.11737.20718.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 X-Mailer: Evolution 2.28.2 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 62.200.22.2 X-SA-Exim-Mail-From: ijc@hellion.org.uk Subject: Re: [tip:x86/irq] x86: apic: Fix mismerge, add arch_probe_nr_irqs() again X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on hopkins.hellion.org.uk) X-Cloudmark-Analysis: v=1.1 cv=ZtHxNT4mZm3rCuM0SmWmgWxeBwJsziC8EqOrwwVkrhA= c=1 sm=0 a=xE1qpWtd3IAA:10 a=zTfOVrVR-XCbWqQERIkA:9 a=e74zu2V4jDPjODFp6G-N2sa1ougA:4 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2010-02-26 at 10:19 -0800, Yinghai Lu wrote: > > > for x86, with radix tree based irq_to_desc(), > removing arch_probe_nr_irqs is intentional. so we get more irq that > could be used. This sounds interesting for the Xen dom0 use case where we can have essentially arbitrary numbers of interrupt sources. Is there a tree somewhere that I can be looking at? Ian -- Ian Campbell Current Noise: Rammstein - Morgenstern Money will say more in one moment than the most eloquent lover can in years.