From: Arnd Bergmann <arnd@arndb.de>
To: KyongHo Cho <pullip.cho@samsung.com>
Cc: "Marek Szyprowski" <m.szyprowski@samsung.com>,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-media@vger.kernel.org,
"Tomasz Stanislawski" <t.stanislaws@samsung.com>,
k.debski@samsung.com, kgene.kim@samsung.com,
kyungmin.park@samsung.com,
"Sylwester Nawrocki" <s.nawrocki@samsung.com>,
"Andrzej Pietrasiewicz" <andrzej.p@samsung.com>,
대인기 <inki.dae@samsung.com>, 강민규 <mk7.kang@samsung.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/7] ARM: Samsung: update/rewrite Samsung SYSMMU (IOMMU) driver
Date: Mon, 14 Mar 2011 14:32:19 +0100 [thread overview]
Message-ID: <201103141432.19614.arnd@arndb.de> (raw)
In-Reply-To: <AANLkTimagS1vBXEYjXQDx=OGhTRm=n0yO4n+kHTAqBOz@mail.gmail.com>
On Monday 14 March 2011, KyongHo Cho wrote:
> I think we can consider another solution for the various requirements.
> I think one of the most possible solutions is VCMM.
> Or we can enhance include/linux/iommu.h with reference of VCMM.
I think extending or changing the existing interface would be much
preferred. It's always better to limit the number of interfaces
that do the same thing, and we already have more duplication than
we want with the two dma-mapping.h and iommu.h interfaces.
Note that any aspect of the existing interface can be changed if
necessary, as long as there is a way to migrate all the existing
users. Since the iommu API is not exported to user space, there
is no requirement to keep it stable.
Arnd
next prev parent reply other threads:[~2011-03-14 13:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-04 9:01 [PATCH/RFC 0/7] Samsung IOMMU videobuf2 allocator and s5p-fimc update Marek Szyprowski
2011-03-04 9:01 ` [PATCH 1/7] ARM: S5PV310: Add platform definitions for FIMC Marek Szyprowski
2011-03-12 0:27 ` Kukjin Kim
2011-03-04 9:01 ` [PATCH 2/7] ARM: S5PV310: power domains: fixes and code cleanup Marek Szyprowski
2011-03-04 9:01 ` [PATCH 3/7] ARM: Samsung: update/rewrite Samsung SYSMMU (IOMMU) driver Marek Szyprowski
2011-03-04 16:04 ` Marek Szyprowski
2011-03-10 14:52 ` Arnd Bergmann
2011-03-11 9:04 ` Marek Szyprowski
2011-03-11 11:50 ` Arnd Bergmann
2011-03-11 12:35 ` Marek Szyprowski
2011-03-11 14:07 ` Arnd Bergmann
2011-03-11 14:51 ` Marek Szyprowski
2011-03-11 15:15 ` Arnd Bergmann
2011-03-11 15:39 ` Marek Szyprowski
2011-03-11 16:00 ` Arnd Bergmann
2011-03-14 12:37 ` KyongHo Cho
2011-03-14 12:46 ` Russell King - ARM Linux
2011-03-15 1:45 ` InKi Dae
2011-03-15 8:35 ` Russell King - ARM Linux
2011-03-15 9:34 ` daeinki
2011-03-15 9:53 ` Russell King - ARM Linux
2011-03-14 13:32 ` Arnd Bergmann [this message]
2011-03-04 9:01 ` [PATCH 4/7] v4l: videobuf2: add Samsung SYSMMU (IOMMU) based allocator Marek Szyprowski
2011-03-04 9:01 ` [PATCH 5/7] s5p-fimc: add pm_runtime support Marek Szyprowski
2011-03-04 9:01 ` [PATCH 6/7] s5p-fimc: Add support for vb2-s5p-iommu allocator Marek Szyprowski
2011-03-04 9:01 ` [PATCH 7/7] ARM: S5PC210: enable FIMC on Universal_C210 Marek Szyprowski
2011-03-08 7:28 ` [PATCH/RFC 0/7] Samsung IOMMU videobuf2 allocator and s5p-fimc update Kukjin Kim
2011-03-08 9:34 ` Marek Szyprowski
2011-03-08 10:05 ` InKi Dae
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