Matthew Wilcox wrote: > On Mon, Jan 23, 2023 at 11:36:51AM -0800, Dan Williams wrote: > > Jason Gunthorpe via Lsf-pc wrote: > > > I would like to have a session at LSF to talk about Matthew's > > > physr discussion starter: > > > > > > https://lore.kernel.org/linux-mm/YdyKWeU0HTv8m7wD@xxxxxxxxxxxxxxxxxxxx/ > > > > > > I have become interested in this with some immediacy because of > > > IOMMUFD and this other discussion with Christoph: > > > > > > https://lore.kernel.org/kvm/4-v2-472615b3877e+28f7-vfio_dma_buf_jgg@xxxxxxxxxx/ > > > > I think this is a worthwhile discussion. My main hangup with 'struct > > page' elimination in general is that if anything needs to be allocated > > You're the first one to bring up struct page elimination. Neither Jason > nor I have that as our motivation. Oh, ok, then maybe I misread the concern in the vfio discussion. I thought the summary there is debating the ongoing requirement for 'struct page' for P2PDMA?