On Fri, May 01, 2020 at 11:51:46AM -0700, Forrest Yuan Yu wrote: > This RFC is to add a hypercall UCALL so that guest can communicate with > the userspace hypervisor. A guest may want to do this in different > scenarios. For example, a guest can ask the userspace hypervisor to > harden security by setting restricted access permissions on guest SLAT > entries. > > Please note this hypercall provides the infrastructure for this type of > communication but does not enforce the protocol. A proposal for the > guest/userspace communication protocol will follow if this RFC is > accepted. It's hard to review certain aspects of the proposal without seeing the usage of it. Can you post the whole thing as an RFC?