Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934337AbaKMV2i (ORCPT ); Thu, 13 Nov 2014 16:28:38 -0500 Received: from service87.mimecast.com ([91.220.42.44]:41600 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934189AbaKMV2f convert rfc822-to-8bit (ORCPT ); Thu, 13 Nov 2014 16:28:35 -0500 Message-ID: <5465227E.6000309@arm.com> Date: Thu, 13 Nov 2014 21:28:30 +0000 From: Marc Zyngier User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130330 Thunderbird/17.0.5 MIME-Version: 1.0 To: Thomas Gleixner CC: Jiang Liu , Bjorn Helgaas , Ingo Molnar , "grant.likely@linaro.org" , Yijing Wang , Yingjoe Chen , Borislav Petkov , "H. Peter Anvin" , Matthias Brugger , Tony Luck , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [Patch V1 0/6] Refine generic/PCI MSI irqodmian interfaces References: <1415879029-20098-1-git-send-email-jiang.liu@linux.intel.com> <54651BE2.9080008@arm.com> In-Reply-To: X-Enigmail-Version: 1.4.6 X-OriginalArrivalTime: 13 Nov 2014 21:28:31.0351 (UTC) FILETIME=[C5A3B870:01CFFF88] X-MC-Unique: 114111321283300201 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 13/11/14 21:11, Thomas Gleixner wrote: > On Thu, 13 Nov 2014, Marc Zyngier wrote: >> With the new stacked irq domains, it becomes pretty tempting >> to allocate an MSI domain per PCI bus, which would remove >> the requirement of either relying on arch-specific code, or >> a default PCI MSI domain. > > Right. That's what I roughly had in mind. And that would solve the > multi-iommu issue on x86 nicely as well. We establish the association > at the time where the bus gets populated. So the whole lookup magic > simply goes away. Great. I've pushed the whole thing out with this patch, the couple of fixes I mentioned earlier, as well as the whole ITS code: git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/stacked-its-v2 Time to go home. M. -- Jazz is not dead. It just smells funny... -- 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/