[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Fail to boot Dom0 on Xen Arm64 after "dma-mapping: bypass indirect calls for dma-direct"
On Thu, Jan 17, 2019 at 11:43:49AM +0000, Julien Grall wrote: > Looking at the change for arm64, you will always call dma-direct API. In > previous Linux version, xen-swiotlb will call dev->archdata.dev_dma_ops (a > copy of dev->dma_ops before setting Xen DMA ops) if not NULL. Does it mean > we expect dev->dma_ops to always be NULL and hence using dma-direct API? The way I understood the code from inspecting it and sking the maintainers a few askings is that for DOM0 we always use xen-swiotlb as the actual dma_map_ops, but then use the functions in page-coherent.h only to deal with cache maintainance, so it should be safe. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |