On Thu 31-01-19 11:10:06, Jerome Glisse wrote: > > Andrew what is your plan for this ? I had a discussion with Peter Xu > and Andrea about change_pte() and kvm. Today the change_pte() kvm > optimization is effectively disabled because of invalidate_range > calls. With a minimal couple lines patch on top of this patchset > we can bring back the kvm change_pte optimization and we can also > optimize some other cases like for instance when write protecting > after fork (but i am not sure this is something qemu does often so > it might not help for real kvm workload). > > I will be posting a the extra patch as an RFC, but in the meantime > i wanted to know what was the status for this. > > Jan, Christian does your previous ACK still holds for this ? Yes, I still think the approach makes sense. Dan's concern about in tree users is valid but it seems you have those just not merged yet, right? Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
