On Wed, Jul 08, 2020 at 12:35:34PM +0200, Nicolas Saenz Julienne wrote: > > Which allows me to switch between ACPI/DT on the machine. In DT mode it > > works fine now, > > Nice, would that count as a Tested-by from you? > > > but with ACPI I continue to have failures unless I > > disable CMA via cma=0 on the kernel command line. > > Yes, I see why, in atomic_pool_expand() memory is allocated from CMA without > checking its correctness. That calls for a separate fix. I'll try to think of > something.
I think we need a dma_coherent_ok for the allocations from the pool and then fall back to the next better one to get started. And yes, CMA is a bit of a mess, that generally needs better checks. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
