Re: [PATCH 6/8] KVM: PPC: E500: Implement MMU notifiers

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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.

Paul.
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