Messages in this thread | | | Date | Mon, 6 Mar 2023 20:23:36 -0500 | From | Peter Xu <> | Subject | Re: [PATCH v3 5/5] mm: userfaultfd: add UFFDIO_CONTINUE_MODE_WP to install WP PTEs |
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On Mon, Mar 06, 2023 at 02:50:24PM -0800, Axel Rasmussen wrote: > UFFDIO_COPY already has UFFDIO_COPY_MODE_WP, so when installing a new > PTE to resolve a missing fault, one can install a write-protected one. > This is useful when using UFFDIO_REGISTER_MODE_{MISSING,WP} in > combination. > > So, add an analogous UFFDIO_CONTINUE_MODE_WP, which does the same thing > but for *minor* faults. > > Update the selftest to do some very basic exercising of the new flag. > > Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Some mentioning on the use case would be nice. :) No objection having it.
Acked-by: Peter Xu <peterx@redhat.com>
Thanks,
-- Peter Xu
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