Abstract: This is the first step towards PVH mode. This is relevant only for DomU. Speeds up amd64 - PV on amd64 has sub-optimal TLB and syscall overhead due to privilege level sharing between kernel and userland.



Scope (Timelines):

This project involves intrusive kernel configuration changes, since NetBSD currently has separate native (GENERIC) and xen (XEN3_DOMU) kernels. A "hybrid" build is required to bring in the PV drivers and xen infrastructure support such as xenbus(4).

Once the hypercall page is up however, progress should be faster.


http://wiki.xenproject.org/wiki/XenParavirtOps and http://wiki.xenproject.org/wiki/PV_on_HVM