From: Christoph Hellwig <hch@lst.de>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Tomasz Figa <tfiga@chromium.org>,
"open list:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@lst.de>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will.deacon@arm.com>,
Vineet Gupta <vgupta@synopsys.com>,
Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>,
Mitchel Humpherys <mitchelh@codeaurora.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [RFC PATCH 4/5] iommu/dma: Export non-static functions to use in modules
Date: Thu, 6 Jul 2017 16:10:45 +0200 [thread overview]
Message-ID: <20170706141045.GA577@lst.de> (raw)
In-Reply-To: <f66b6ebc-9977-8783-4e6a-10dcfcadf60d@arm.com>
On Thu, Jul 06, 2017 at 12:09:45PM +0100, Robin Murphy wrote:
> I suppose another option is to just make the IOMMU and DMA ops a
> self-contained non-modular driver mirroring the VT-d/AMD-Vi IOMMUs -
> AFAICS it shouldn't have to be all that tightly coupled to the IPU bus
> code, the latter more or less just needs to create the appropriate IOMMU
> device for the driver to find.
I still haven't seen the driver code, but this seems to be best
solution so far. Given that it's not a plug in device but part of
an SOC that seems perfectly acceptable to me.
next prev parent reply other threads:[~2017-07-06 14:10 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-05 7:12 [RFC PATCH 0/5] Fixes for loadable modules implementing DMA/IOMMU APIs Tomasz Figa
2017-07-05 7:12 ` [RFC PATCH 1/5] base: dma-mapping: Export commonly used symbols Tomasz Figa
2017-07-05 15:17 ` Christoph Hellwig
2017-07-05 15:22 ` Tomasz Figa
2017-07-05 17:20 ` Christoph Hellwig
2017-07-06 1:44 ` Tomasz Figa
2017-07-06 8:26 ` Arnd Bergmann
2017-07-06 8:34 ` Tomasz Figa
2017-07-06 8:36 ` Tomasz Figa
2017-07-06 12:23 ` Arnd Bergmann
2017-07-06 13:31 ` Tomasz Figa
2017-07-06 13:49 ` Tomasz Figa
2017-07-06 14:02 ` Arnd Bergmann
2017-07-06 14:06 ` Tomasz Figa
2017-07-06 14:27 ` Arnd Bergmann
2017-07-06 14:35 ` Tomasz Figa
2017-07-06 13:56 ` Arnd Bergmann
2017-07-05 7:12 ` [RFC PATCH 2/5] base: dma-mapping: Provide a function to look up remapped pages Tomasz Figa
2017-07-05 7:12 ` [RFC PATCH 3/5] iommu: Export non-static functions to use in modules Tomasz Figa
2017-07-05 7:12 ` [RFC PATCH 4/5] iommu/dma: " Tomasz Figa
2017-07-05 16:22 ` Robin Murphy
2017-07-06 2:25 ` Tomasz Figa
2017-07-06 11:09 ` Robin Murphy
2017-07-06 14:10 ` Christoph Hellwig [this message]
2017-07-06 14:17 ` Tomasz Figa
2017-07-06 14:24 ` Tomasz Figa
2017-07-06 14:35 ` Arnd Bergmann
2017-07-06 14:41 ` Tomasz Figa
2017-07-05 7:12 ` [RFC PATCH 5/5] iommu/dma: Add iommu_dma_cleanup() Tomasz Figa
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