linux-kernel - Re: [Patch V1 0/6] Refine generic/PCI MSI irqodmian interfaces

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Message-ID: <5465227E.6000309@arm.com>
Date:	Thu, 13 Nov 2014 21:28:30 +0000
From:	Marc Zyngier <marc.zyngier@....com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Ingo Molnar <mingo@...hat.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	Yijing Wang <wangyijing@...wei.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Patch V1 0/6] Refine generic/PCI MSI irqodmian interfaces

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...

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