[PATCH v4 0/8] iommu/rockchip: Fix bugs and enable on ARM64

Tomasz Figa tfiga at chromium.org
Tue Jun 21 05:42:16 PDT 2016

Hi Joerg,

On Tue, Jun 21, 2016 at 6:17 PM, Joerg Roedel <joro at 8bytes.org> wrote:
> On Tue, Jun 21, 2016 at 01:34:33PM +0900, Tomasz Figa wrote:
> > This series intends mostly to enable support for ARM64 architecture
> > in the rockchip-iommu driver. On the way to do so, some bugs are also
> > fixed.
> >
> > The most important changes here are:
> >  - making the Rockchip IOMMU driver use DMA API for managing cache
> >    coherency of page tables,
> >  - making the Rockchip DRM driver not use DMA API on behalf of a virtual
> >    device (behind a virtual IOMMU) to allocate and map buffers, but
> >    instead proper DRM helpers and IOMMU API directly.
> Are these two parts dependent on each other or can the IOMMU and the DRM
> part merged independently?

In simple words, DRM patches depend on IOMMU patches.

More precisely: The IOMMU patches alone are supposed to not break
anything. Same goes for the first DRM patch (7/8). Only second DRM
patch (8/8) depends on changes introduced by its predecessors.

Best regards,

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