On Monday 31 July 2006 11:36, Jeremy Fitzhardinge wrote: > Andi Kleen wrote: > > The other approach - check for ring != 0 - do generic paravirtualized > > startup or normal one and then probe later in C seems certainly > > cleaner. > > > > Xen supports trusted ring 0 paravirtualized kernels. What are they used for? Domain-0 isn't in ring-0 I thought. I can't even see how it would work because e.g. some stuff like MTRRs couldn't be virtualized this way. -Andi