I think you want a different word here. Generally DMA to/from the GPU is cache coherent (either via DMA sniffing for cache invalidation or software managing re

I think you want a different word here. Generally DMA to/from the GPU is cache coherent (either via DMA sniffing for cache invalidation or software managing regions for DMA, e.g. marking relevant PTEs as nocache). So accesses are _coherent_, but the cache is simply irrelevant (or even more costly, if it's using snooping).