From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934868AbaH0OEg (ORCPT ); Wed, 27 Aug 2014 10:04:36 -0400 Received: from www.linutronix.de ([62.245.132.108]:33359 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933802AbaH0OEd (ORCPT ); Wed, 27 Aug 2014 10:04:33 -0400 Date: Wed, 27 Aug 2014 16:03:22 +0200 (CEST) From: Thomas Gleixner To: Marc Zyngier cc: =?ISO-8859-15?Q?Jan_L=FCbbe?= , Mark Rutland , "linux-doc@vger.kernel.org" , Russell King , Arnd Bergmann , "Joe.C" , "yh.chen@mediatek.com" , Pawel Moll , "nathan.chung@mediatek.com" , "Joe.C" , "devicetree@vger.kernel.org" , Jason Cooper , "yingjoe.chen@gmail.com" , Ian Campbell , Rob Herring , Matthias Brugger , "eddie.huang@mediatek.com" , "linux-arm-kernel@lists.infradead.org" , "srv_heupstream@mediatek.com" , "hc.yen@mediatek.com" , Randy Dunlap , "linux-kernel@vger.kernel.org" , Jonas Jensen , Kumar Gala , Olof Johansson , Jiang Liu Subject: Re: [RESEND PATCH v2 1/4] irqchip: gic: Change irq type check when extension is present In-Reply-To: <87ppfmoxxz.fsf@approximate.cambridge.arm.com> Message-ID: References: <1407895884-18131-1-git-send-email-srv_yingjoe.chen@mediatek.com> <1407895884-18131-2-git-send-email-srv_yingjoe.chen@mediatek.com> <53F724F5.3040004@arm.com> <1409133344.25382.37.camel@coredoba.hi.pengutronix.de> <53FDB4B3.6000400@arm.com> <87ppfmoxxz.fsf@approximate.cambridge.arm.com> User-Agent: Alpine 2.10 (DEB 1266 2009-07-14) 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 Wed, 27 Aug 2014, Marc Zyngier wrote: > I very much like that kind of approach. Stacking domains seems to solve > a number of issues at once: > > - NVIDIA's gic extension > - TI's crossbar > - ARM's GICv2m > - Mediatek's glorified line inverter > - ... and probably the next madness that's going to land tomorrow Its probably already there you just don't know about it yet :) > I haven't completly groked the way we're going to allocate domains and > irq_data structures, but this is definitely something worth All we have for now is a rough idea and some pseudo code in my lengthy reply to Jiang, but it shouldn't be hard to implement something useful. Thanks, tglx