Hi Will,
On 2014-08-29 17:54, Will Deacon wrote:
This patch series is an RFC to implement IOMMU master configuration into
of_dma_configure. I haven't yet ported any IOMMU drivers to it, so it
remains untested, but I wanted to get some early feedback to ensure that
this doesn't end up going in
On Tue, Sep 02, 2014 at 07:26:01AM +0100, Marek Szyprowski wrote:
Hi Will,
Hi Marek,
On 2014-08-29 17:54, Will Deacon wrote:
This patch series is an RFC to implement IOMMU master configuration into
of_dma_configure. I haven't yet ported any IOMMU drivers to it, so it
remains untested,
Hi Will,
On 2014-09-02 10:31, Will Deacon wrote:
On Tue, Sep 02, 2014 at 07:26:01AM +0100, Marek Szyprowski wrote:
On 2014-08-29 17:54, Will Deacon wrote:
This patch series is an RFC to implement IOMMU master configuration into
of_dma_configure. I haven't yet ported any IOMMU drivers to it,
On Tuesday 02 September 2014 10:48:02 Marek Szyprowski wrote:
-- I have concerns that allocating one domain per master might be
too much, but it's hard to tell without an IOMMU driver ported over.
One domain per master is IMHO a sane default configuration. The only default
alternative
Hi Arnd,
On 2014-09-02 10:56, Arnd Bergmann wrote:
On Tuesday 02 September 2014 10:48:02 Marek Szyprowski wrote:
-- I have concerns that allocating one domain per master might be
too much, but it's hard to tell without an IOMMU driver ported over.
One domain per master is IMHO a sane
On Tuesday 02 September 2014 12:42:13 Marek Szyprowski wrote:
Hi Arnd,
On 2014-09-02 10:56, Arnd Bergmann wrote:
On Tuesday 02 September 2014 10:48:02 Marek Szyprowski wrote:
-- I have concerns that allocating one domain per master might be
too much, but it's hard to tell without an
Hi Will,
On 2014-09-02 12:57, Will Deacon wrote:
On Tue, Sep 02, 2014 at 11:42:13AM +0100, Marek Szyprowski wrote:
On 2014-09-02 10:56, Arnd Bergmann wrote:
On Tuesday 02 September 2014 10:48:02 Marek Szyprowski wrote:
-- I have concerns that allocating one domain per master might be
too
Hi Arnd,
On 2014-09-02 14:22, Arnd Bergmann wrote:
On Tuesday 02 September 2014 12:42:13 Marek Szyprowski wrote:
On 2014-09-02 10:56, Arnd Bergmann wrote:
On Tuesday 02 September 2014 10:48:02 Marek Szyprowski wrote:
-- I have concerns that allocating one domain per master might be
too
On Tuesday 02 September 2014 14:24:18 Marek Szyprowski wrote:
For isolation purposes, it can only help to have more domains, but
I would guess that there is some space overhead in maintaining lots
of page tables.
I'm okay with both approaches (separate domain for each device vs. single
On Tuesday 02 September 2014 14:30:36 Marek Szyprowski wrote:
However we also need to figure out how to let drivers to make their own
configuration, like it is required by Exynos DRM subsystem, which consist
of several devices, each having its own IOMMU controller, but for
convenience
On 2014-09-02 14:46, Arnd Bergmann wrote:
On Tuesday 02 September 2014 14:30:36 Marek Szyprowski wrote:
However we also need to figure out how to let drivers to make their own
configuration, like it is required by Exynos DRM subsystem, which consist
of several devices, each having its own
On Tuesday 02 September 2014 14:43:18 Arnd Bergmann wrote:
On Tuesday 02 September 2014 14:24:18 Marek Szyprowski wrote:
For isolation purposes, it can only help to have more domains, but
I would guess that there is some space overhead in maintaining lots
of page tables.
I'm okay
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