On Tue, May 02, 2023 at 03:47:43PM +0200, David Hildenbrand wrote: > > Eventually we want to implement a mechanism where we can dynamically pin in response to RPCIT. > > Okay, so IIRC we'll fail starting the domain early, that's good. And if we > pin all guest memory (instead of small pieces dynamically), there is little > existing use for file-backed RAM in such zPCI configurations (because memory > cannot be reclaimed either way if it's all pinned), so likely there are no > real existing users. Right, this is VFIO, the physical HW can't tolerate not having pinned memory, so something somewhere is always pinning it. Which, again, makes it weird/wrong that this KVM code is pinning it again :\ Jason
