linux-kernel - Re: [PATCH] OMAP: iommu flush page table entries from L1 and L2 cache

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Message-ID: <BANLkTim_30SbVhPLFOaq-KYwz5N6NGCe6A@mail.gmail.com>
Date:	Tue, 19 Apr 2011 21:35:56 +0900
From:	Kyungmin Park <kmpark@...radead.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Fernando Guzman Lugo <fernando.lugo@...com>,
	Tony Lindgren <tony@...mide.com>,
	Hiroshi DOYU <Hiroshi.DOYU@...ia.com>,
	linux-kernel@...r.kernel.org,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>,
	Ramesh Gupta <grgupta@...com>, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH] OMAP: iommu flush page table entries from L1 and L2 cache

On Tue, Apr 19, 2011 at 9:01 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Tuesday 19 April 2011, Kyungmin Park wrote:
>> On Mon, Apr 18, 2011 at 11:13 PM, Arnd Bergmann <arnd@...db.de> wrote:
>> > On Monday 18 April 2011, Kyungmin Park wrote:
>> >> On Mon, Apr 18, 2011 at 8:58 PM, Arnd Bergmann <arnd@...db.de> wrote:
>> >> >
>> >> > One missing piece is still a way for a platform to provide both
>> >> > the iommu and the dma-mapping API in a unified driver. Right now,
>> >> > you have to export both interface for a generic solution.
>> >>
>> >> Actually MSM and we (Michal, Marek) tried to merge the generic IOMMU
>> >> implementation into mm, but MM did't accept it.
>> >
>> > I'm confused. What do you mean with MM?
>> linux/mm, Memory Management.
>
> I'm still confused. What were you suggesting to merge in there?
> Do you have a link to a mailing list discussion?

First, Zach Pfeffer <zpfeffer@...eaurora.org> sent the patch
https://patchwork.kernel.org/patch/108736/

Second, Michal tried it.
http://lkml.org/lkml/2010/9/6/41

http://lwn.net/Articles/403643/
https://patchwork.kernel.org/patch/157451/

Thank you,
Kyungmin Park

>
>        Arnd
>
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