Anthony Liguori wrote: > Nakajima, Jun wrote: <snip> > > For KVM, it should be okay as well. But we can replace two CR4 accesses > > with just one hypercall. > > > > I was thinking the same thing :-) > > I was actually thinking about adding a hypercall to set/clear a bit in a > control register. The thought here is that it would be useful not just > for the global bit but also for CR0.TS although we would need another > paravirt_op hook for stts. Given the optimizations for CPU virtualization in the current H/W, I'm not sure if such hooks are useful. Do you have any performance data that justify such hooks? > > Regards, > > Anthony Liguori > Jun --- Intel Open Source Technology Center _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
