NetBSD Wiki/projects/project/
Xen: direct map support (with large pages)
- Contact: port-xen
- Mentors: Cherry G. Mathew
- Duration estimate: 16 hours
Abstract: NetBSD/Xen currently doesn't support __HAVE_DIRECT_MAP
Deliverables:
- Direct Mapped functioning NetBSD/Xen, both dom0 and domU
- Demonstrable performance numbers
- Reduce TLB contention and clean up code for pvops/pvh
Implementation: This change involves testing for the Xen and CPU featureset, and tweaking the pmap code so that 1G superpages can be requested from the hypervisor and direct mapped the same way native code does.
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