Messages in this thread | | | Date | Mon, 13 Jun 2022 14:55:40 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v3 2/6] userfaultfd: add /dev/userfaultfd for fine grained access control |
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On Wed, 1 Jun 2022 14:09:47 -0700 Axel Rasmussen <axelrasmussen@google.com> wrote:
> To achieve this, add a /dev/userfaultfd misc device. This device > provides an alternative to the userfaultfd(2) syscall for the creation > of new userfaultfds. The idea is, any userfaultfds created this way will > be able to handle kernel faults, without the caller having any special > capabilities. Access to this mechanism is instead restricted using e.g. > standard filesystem permissions.
The use of a /dev node isn't pretty. Why can't this be done by tweaking sys_userfaultfd() or by adding a sys_userfaultfd2()?
Peter, will you be completing review of this patchset?
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