On 04/02/2015 12:25, Christian Borntraeger wrote: > Whenever vhost or qemu or a finished aio request wrote content into a > virtio buffer, the HW has set the storage key for that physical page, > which makes it automatically dirty/referenced in the guest visible > storage key.
Ah, I knew the storage keys were per-physical page, but I wasn't sure if they were separate for the host and the guest. That's obvious now. Can we detect non-zero storage key in emulated zPCI requests, and fail the request somehow? Paolo
