On 10/25/19 10:40 AM, David Hildenbrand wrote: > On 25.10.19 10:39, Janosch Frank wrote: >> On 10/25/19 10:31 AM, David Hildenbrand wrote: >>> On 24.10.19 13:40, Janosch Frank wrote: >>>> The convert to/from secure (or also "import/export") ultravisor calls >>>> are need for page management, i.e. paging, of secure execution VM. >>>> >>>> Export encrypts a secure guest's page and makes it accessible to the >>>> guest for paging. >>> >>> How does paging play along with pinning the pages (from >>> uv_convert_to_secure() -> kvm_s390_pv_pin_page()) in a follow up patch? >>> Can you paint me the bigger picture? >> >> That's a stale comment I should have removed before sending... >> The current patches do not support paging. > > Note that once you pin you really have to disable the balloon in the > QEMU (inhibit it). > Yes, and you need the iommu for virtio. We didn't yet fully discuss how to handle that.
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