On Tue, Sep 08, 2020 at 05:54:09PM +0200, Christoph Hellwig wrote: > Given that ARCH_NO_SG_CHAIN is only true for alpha, parisc and a few > arm subarchitectures I think just not supporting umem is probably > cleared. And eventually we'll need to drop ARCH_NO_SG_CHAIN entirely. It would be fine to make INFINIBAND_USER_MEM depend on !ARCH_NO_SG_CHAIN. alpha and parisc are not supported in rdma-core, and the non-multiplatform ARM sub-arches are probably also the kind that don't work with the userspace DMA model anyhow. Jason
