On 05/30/2011 11:52 AM, Ingo Molnar wrote:
* Avi Kivity<avi@xxxxxxxxxx> wrote: > > Another option would be to try to set the SMEP bit *before* we > > enable paging. In theory this should not confuse a Linux guest - > > and while i have not tested it i *think* we let it survive in the > > saved_cr4_features shadow variable. That would make guest > > suspend/resume work out of box as well. > > Is there any reason not to do it in a hidden way in kvm? Why must > we play tricks? So do you have a suggestion of how to do this cleaner? Add an ioctl that allows a VCPU to be configured in a way to set a cr4 feature without the guest actually seeing that bit? [Assuming both cr4 reads and writes are fully captured by KVM and thus guest behavior is controllable.]
Yes, this was what I suggested before. IIRC you liked it. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
