On Wed, Sep 12, 2018 at 04:24:11PM +0100, Robin Murphy wrote:
> Robin Murphy (3):
> iommu: Add fast hook for getting DMA domains
> iommu/dma: Use fast DMA domain lookup
> arm64/dma-mapping: Mildly optimise non-coherent IOMMU ops
Applied, thanks Robin.
On 17/09/2018 12:20, John Garry wrote:
On 14/09/2018 13:48, Will Deacon wrote:
Hi Robin,
Hi Robin,
I just spoke with Dongdong and we will test this version also so that we
may provide a "Tested-by" tag.
I tested this, so for series:
Tested-by: John Garry
Thanks,
John
Thanks,
John
>Not sure how fast Tom needs the common dma-iommu code for the x86 AMD iommu
>conversion.
I am currently busy working on something else and won't be able to
do/test the x86 AMD iommu conversion anytime soon. So I don't need the
common dma-iommu code anytime soon.
On 17 September 2018 at 14:33,
On Fri, Sep 14, 2018 at 01:48:59PM +0100, Will Deacon wrote:
> > As far as merging goes, I don't mind at all whether this goes via IOMMU,
> > or via dma-mapping provided Joerg's happy to ack it.
>
> I think it makes most sense for Joerg to take this series via his tree.
FYI, I have WIP patches
On 14/09/2018 13:48, Will Deacon wrote:
Hi Robin,
Hi Robin,
I just spoke with Dongdong and we will test this version also so that we
may provide a "Tested-by" tag.
Thanks,
John
On Wed, Sep 12, 2018 at 04:24:11PM +0100, Robin Murphy wrote:
John raised the issue[1] that we have some
Hi Robin,
On Wed, Sep 12, 2018 at 04:24:11PM +0100, Robin Murphy wrote:
> John raised the issue[1] that we have some unnecessary refcount contention
> in the DMA ops path which shows scalability problems now that we have more
> real high-performance hardware using iommu-dma. The x86 IOMMU drivers
John raised the issue[1] that we have some unnecessary refcount contention
in the DMA ops path which shows scalability problems now that we have more
real high-performance hardware using iommu-dma. The x86 IOMMU drivers are
sidestepping this by stashing domain references in archdata, but since
