On Mon, May 23, 2022 at 04:02:22PM +1000, Alexey Kardashevskiy wrote: > Which means the guest RAM does not need to be all mapped in that base IOAS > suggested down this thread as that would mean all memory is pinned and > powervm won't be able to swap it out (yeah, it can do such thing now!). Not > sure if we really want to support this or stick to a simpler design. Huh? How can it swap? Calling GUP is not optional. Either you call GUP at the start and there is no swap, or you call GUP for each vIOMMU hypercall. Since everyone says PPC doesn't call GUP during the hypercall - how is it working? Jason
