Hi all,
are there any road blocks for using drivers/iommu/dma-iommu.c for more
than just arm64, e.g. also for the Intel/AMD iommus? I've been trying
to consolidate the giant amounts of duplicate code in the dma ops
implementations for a while, and iommus that provide an iommu_api
driver seems lik
On Wed, Sep 27, 2017 at 10:13:51AM -0700, Dan Williams wrote:
> As far as I can see "Offset can be greater than PAGE_SIZE" is the only
> safe assumption for core code.
It seems completely bogus to me, but if it is the current assumption
we'll have to document it. But this brings me back to that
o
On Wed, Sep 27, 2017 at 11:23:52AM +0100, Robin Murphy wrote:
> > I found that debug_dma_alloc_coherent() and debug_dma_free_coherent()
> > assume that dma_alloc_coherent() always returns a linear address.
> > However it's possible that dma_alloc_coherent() returns a non-linear
> > address. In this
