On 08.08.2012, at 05:31, Paul Mackerras <paulus@xxxxxxxxx> wrote: > On Tue, Aug 07, 2012 at 12:57:14PM +0200, Alexander Graf wrote: >> The e500 target has lived without mmu notifiers ever since it got >> introduced, but fails for the user space check on them with hugetlbfs. > > Ironically that user space check isn't necessary any more since David > Gibson's fix for the hugetlbfs bug went in (90481622, "hugepages: fix > use after free bug in "quota" handling"). So on sufficiently recent > kernels you can just remove the userspace check. Implementing > mmu-notifiers is a good thing for other reasons though. Yeah, it's probably best to just require mmu notifiers from every target. It would however be good to have a CAP nevertheless (or change the semantics of SYNC_MMU) so that we can run HV KVM on 970 without changes to QEMU. Alex -- 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
