xen: use get_user()/put_user() in gntdev and privcmd

gntdev_copy() updates per-segment status words with __get_user() and
__put_user().  privcmd writes back mmap batch errors and the resource
frame count with __put_user().  The pointers were validated earlier,
away from the accesses: by a copy_from_user() of the enclosing
structure, or by an access_ok() on the whole array before a callback
walks it.  Each access enables and disables user access on its own
anyway, so the separation saves nothing.

Use get_user() and put_user().

This is part of getting rid of __get_user() and __put_user() entirely.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

0 files changed, 0 insertions, 0 deletions