On Tue, Jun 7, 2011 at 12:58 PM, Roedel, Joerg wrote:
> Btw, mind to split out your changes which move the iommu-api into
> drivers/iommu? I can merge them meanwhile into my iommu tree and start
> working on a proposal for the generic large page-size support.
Sure, that will be great. Thanks!
--
On Tue, Jun 07, 2011 at 05:22:11AM -0400, Ohad Ben-Cohen wrote:
> On Tue, Jun 7, 2011 at 10:52 AM, Roedel, Joerg wrote:
> > Yup. Btw, is there any IOMMU hardware which supports non-natural
> > alignment? In this case we need to expose these requirements somehow.
>
> Not sure there are. Let's star
On Tue, Jun 7, 2011 at 10:52 AM, Roedel, Joerg wrote:
> Yup. Btw, is there any IOMMU hardware which supports non-natural
> alignment? In this case we need to expose these requirements somehow.
Not sure there are. Let's start with natural alignment, and extend it
only if someone with additional re
On Mon, Jun 06, 2011 at 04:09:33PM -0400, Ohad Ben-Cohen wrote:
> On Mon, Jun 6, 2011 at 10:20 PM, Roedel, Joerg wrote:
> > Well, it certainly makes sense to have a single implementation for this.
> > But I want to hide this complexity to the user of the IOMMU-API. The
> > best choice is to put th
On Mon, Jun 6, 2011 at 10:20 PM, Roedel, Joerg wrote:
> Well, it certainly makes sense to have a single implementation for this.
> But I want to hide this complexity to the user of the IOMMU-API. The
> best choice is to put this into the layer between the IOMMU-API and the
> backend implementation
On Mon, Jun 06, 2011 at 12:36:13PM -0400, Ohad Ben-Cohen wrote:
> On Mon, Jun 6, 2011 at 6:35 PM, Roedel, Joerg wrote:
> > On Mon, Jun 06, 2011 at 11:15:30AM -0400, Ohad Ben-Cohen wrote:
> >
> >> This is insufficient; users need somehow to tell what page sizes are
> >> supported by the underlying
On Mon, Jun 6, 2011 at 6:35 PM, Roedel, Joerg wrote:
> On Mon, Jun 06, 2011 at 11:15:30AM -0400, Ohad Ben-Cohen wrote:
>
>> This is insufficient; users need somehow to tell what page sizes are
>> supported by the underlying hardware (we can't assume host page-sizes,
>> and we want to use bigger pa
On Mon, Jun 06, 2011 at 11:15:30AM -0400, Ohad Ben-Cohen wrote:
> This is insufficient; users need somehow to tell what page sizes are
> supported by the underlying hardware (we can't assume host page-sizes,
> and we want to use bigger pages whenever possible, to relax the TLB
> pressure).
/
What
On Mon, Jun 6, 2011 at 12:10 PM, Arnd Bergmann wrote:
>> I'd still prefer us to take small steps here, and not gate the omap
>> iommu cleanups with Marek's generic dma_map_ops work though. Let's go
>> forward and migrate omap's iommu to the generic iommu API, so new code
>> will be able to use it
Hi Joerg,
On Mon, Jun 6, 2011 at 1:09 PM, Roedel, Joerg wrote:
> The IOMMU-API already supports multiple page-sizes. See the
> 'order'-parameter of the map/unmap functions.
This is insufficient; users need somehow to tell what page sizes are
supported by the underlying hardware (we can't assume
Hi,
On Thu, Jun 02, 2011 at 06:27:37PM -0400, Ohad Ben-Cohen wrote:
> First stab at iommu consolidation:
>
> - Migrate OMAP's iommu driver to the generic iommu API. With this in hand,
> users can now start using the generic iommu layer instead of calling
> omap-specific iommu API.
>
> New
On Sunday 05 June 2011, Ohad Ben-Cohen wrote:
> > As far as I can tell, once we have that in
> > place, we you can migrate omap3isp from iovmm to dma-mapping and
> > remove iovmm.
>
> Sounds like a plan.
>
> I'd still prefer us to take small steps here, and not gate the omap
> iommu cleanups with
Hi Kyungmin,
On Fri, Jun 3, 2011 at 2:57 AM, Kyungmin Park wrote:
> Please see the RFC patch, ARM: DMA-mapping & IOMMU integration
> http://www.spinics.net/lists/linux-mm/msg19856.html
Marek's work somehow escaped me, thanks for the pointers !
Ohad.
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Hi Arnd,
On Fri, Jun 3, 2011 at 6:53 PM, Arnd Bergmann wrote:
> I think the future of iovmm is looking not so good. Marek Szyprowski
> is working on a generic version of the dma-mapping API (dma_map_ops)
> based on the iommu API.
Nice! I missed Marek's work somehow.
> As far as I can tell, once
On Friday 03 June 2011, Ohad Ben-Cohen wrote:
> First stab at iommu consolidation:
Hi Ohad,
Great to see your progress here!
> - Migrate OMAP's iommu driver to the generic iommu API. With this in hand,
> users can now start using the generic iommu layer instead of calling
> omap-specific io
Hi,
Good approach.
CC'ed the Samsung IOMMU developer. Marek.
BTW, Russell wants to use the DMA based IOMMU?
Please see the RFC patch, ARM: DMA-mapping & IOMMU integration
http://www.spinics.net/lists/linux-mm/msg19856.html
Thank you,
Kyungmin Park
On Fri, Jun 3, 2011 at 7:27 AM, Ohad Ben-Cohen
First stab at iommu consolidation:
- Migrate OMAP's iommu driver to the generic iommu API. With this in hand,
users can now start using the generic iommu layer instead of calling
omap-specific iommu API.
New code that requires functionality missing from the generic iommu api,
will add tha
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