On Mon, Apr 07, 2008 at 05:25:54PM +0800, Dong, Eddie wrote: > In current approach, we have cpu ops like eoi/set_tpr/get_tpr,/set_itm > /set_kr0/set_kr2.../set_kr7 etc. > I think there is another simple alternative is to simply export > setreg/getreg > for cpu ops. > > The benefit of this could be: > 1: Simple in pv_ops I/F > 2: hypervisor neutral. Today we only virtualize around 15 AR/CR > read/write, > But future it may extends since different Hypervisor may do in > different way.
Sounds reasonable. Although it would result in big switch, presumably we can eliminate runtime switch cost by specifically handling setreg/getreg which might complicate binay patch slightly. -- yamahata _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
