linux-kernel - Re: [RESEND PATCH v2 1/4] irqchip: gic: Change irq type check when extension is present

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Message-ID: <alpine.DEB.2.10.1408271556350.3323@nanos>
Date:	Wed, 27 Aug 2014 16:03:22 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Marc Zyngier <marc.zyngier@....com>
cc:	Jan Lübbe <jlu@...gutronix.de>,
	Mark Rutland <Mark.Rutland@....com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	"Joe.C" <srv_yingjoe.chen@...iatek.com>,
	"yh.chen@...iatek.com" <yh.chen@...iatek.com>,
	Pawel Moll <Pawel.Moll@....com>,
	"nathan.chung@...iatek.com" <nathan.chung@...iatek.com>,
	"Joe.C" <yingjoe.chen@...iatek.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Jason Cooper <jason@...edaemon.net>,
	"yingjoe.chen@...il.com" <yingjoe.chen@...il.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	"eddie.huang@...iatek.com" <eddie.huang@...iatek.com>,
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	<linux-arm-kernel@...ts.infradead.org>,
	"srv_heupstream@...iatek.com" <srv_heupstream@...iatek.com>,
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	Randy Dunlap <rdunlap@...radead.org>,
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	Jonas Jensen <jonas.jensen@...il.com>,
	Kumar Gala <galak@...eaurora.org>,
	Olof Johansson <olof@...om.net>,
	Jiang Liu <jiang.liu@...ux.intel.com>
Subject: Re: [RESEND PATCH v2 1/4] irqchip: gic: Change irq type check when
 extension is present

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
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