Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934238AbaKMVL4 (ORCPT ); Thu, 13 Nov 2014 16:11:56 -0500 Received: from www.linutronix.de ([62.245.132.108]:49259 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934154AbaKMVLy (ORCPT ); Thu, 13 Nov 2014 16:11:54 -0500 Date: Thu, 13 Nov 2014 22:11:26 +0100 (CET) From: Thomas Gleixner To: Marc Zyngier 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 In-Reply-To: <54651BE2.9080008@arm.com> Message-ID: References: <1415879029-20098-1-git-send-email-jiang.liu@linux.intel.com> <54651BE2.9080008@arm.com> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Thanks, tglx -- 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/