> >> If we want to actually host enforce (disallow) access to inflated > >> pages, having > > > > Is that a new feature? > > Still in the design phase. Andrea Arcangeli briefly mentioned in in his reply > to > v5 of your patch series > > "We also plan to use userfaultfd to make the balloon driver host enforced > (will work fine on hugetlbfs 2M and tmpfs too) but that's going to be > invisible > to the ABI so it's not strictly relevant for this discussion." >
Looking forward to see more details. Is there any thread about the design? Thanks! Liang > > > >> such a bitmap in QEMU is required. Getting them from the guest > >> doesn't make sense in that context anymore. > > > > Even a bitmap is required, we should avoid to send it in the stop & copy > stage. > > yes, I agree. > > Thanks!
