Re: [PATCH 3/3] iommu/io-pgtable-arm: Allow coherent walks for Mali

2019-09-12 Thread Steven Price
On 11/09/2019 15:42, Robin Murphy wrote: > Midgard GPUs have ACE-Lite master interfaces which allows systems to > integrate them in an I/O-coherent manner. It seems that from the GPU's > viewpoint, the rest of the system is its outer shareable domain, and it > will only emit snoop signals for

[PATCH 3/3] iommu/io-pgtable-arm: Allow coherent walks for Mali

2019-09-11 Thread Robin Murphy
Midgard GPUs have ACE-Lite master interfaces which allows systems to integrate them in an I/O-coherent manner. It seems that from the GPU's viewpoint, the rest of the system is its outer shareable domain, and it will only emit snoop signals for outer shareable accesses. As such, setting the