On Tue, Feb 18, 2025 at 08:04:47PM -0800, David Rientjes wrote: > - the future of guestmemfs and what it becomes, including alignment so > prototyping can be done IMHO we need a generic FDBOX sort of filesystem and the ability to put guestmemfd, memfd and hugetlbfs (fd) into it. This would completely replace the need for a special memory-only filesystem. Most of it should be doable with the folio preservation bitmap scheme I showed in the v5 thread and is not particularly special. Ie for a memfd you take all the folios under it, preserve them in the bitmap, store the folio phys_addr_t's in a linked list of 4k chunks and put the top of the linked list in the FDBOX for that memfd. > - establishing an FSM for all of the various states that are agreed upon > with common language (when memory mappings can happen, what is > disallowed at certain stages) I think this is very important, along with explanations where people expect work to be performed. Jason
