On Fri, 12 Apr 2019 15:47:50 +0200 David Hildenbrand <david@xxxxxxxxxx> wrote: > On 05.04.19 01:16, Halil Pasic wrote: > > Enhanced virtualization protection technology may require the use of > > bounce buffers for I/O. While support for this was built into the virtio > > core, virtio-ccw wasn't changed accordingly. > > Can you elaborate some more about the general approach (Enhanced > virtualization protection technology, ultravisor, concept, issues, how > to squeeze it into QEMU/KVM/kernel) etc = > > For my taste, this cover letter misses some important context :) > I'm aware. Unfortunately we don't have a decision yet about which parts of the protected virtualization architecture are going to be PoP material. You can get some more context immediately by having a look at Martin's features branch and looking at the s390/protvirt and s390/uv patches. I will try to provide more background information for v1. But having a remotely complete and reliable documentation will take some time. What I can offer at the moment is answers to specific questions. Regards, Halil
