On 6/14/21 8:47 AM, Roman Skakun wrote: > Hey, Boris! > Thanks for the review. > > I have an additional question about current implementation that disturbed me. > I think, that we can have cases when mapped memory can not be > physically contiguous. > In order to proceed this correctly need to apply some additional steps > to current implementation as well. > > In mmap() : > 1. Is the memory region physically contiguous? > 2. Remap multiple ranges if it is not. > > In get_sgtable() : > 1. Is the memory region physically contiguous? > 2. Create sgt that will be included multiple contiguous ranges if it is not. > > What do you think about it?
We make sure that we allocate contiguous memory in xen_swiotlb_alloc_coherent(). -boris _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
