linux-kernel - Re: [RFC Part2 v1 00/21] Enable hierarchy irqdomian on x86 platforms

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Date:	Thu, 25 Sep 2014 17:15:55 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Grant Likely <grant.likely@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<x86@...nel.org>, <linux-kernel@...r.kernel.org>,
	<linux-pci@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC Part2 v1 00/21] Enable hierarchy irqdomian on x86 platforms

(2014/09/25 4:25), Thomas Gleixner wrote:
> On Wed, 24 Sep 2014, Yasuaki Ishimatsu wrote:
>> I cannot imagine why the feature makes x86 irq architecture much more clear
>> and more easy to maintain in this description. Of course, I have read the
>> following threads:
>>
>> https://lkml.org/lkml/2014/9/11/101
>

> Here is the long version of the idea:
>
>       https://lkml.org/lkml/2014/8/26/707

This is very helpful for the understanding of this feature.

Thanks,
Yasuaki Ishimatsu

>
> Short version is:
>
> Separate the irq handling entities in a clear layered way instead of
> having vector/[io]apic specific knowledge/data in places like msi,
> remap etc.
>
> Thanks,
>
> 	tglx
>


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