On Mon, Aug 12, 2019 at 11:46:06AM +0100, Andrew Murray wrote:

On Thu, Aug 08, 2019 at 06:04:24PM +0100, Will Deacon wrote:

quoted

On Wed, Aug 07, 2019 at 04:53:20PM +0100, Catalin Marinas wrote:

quoted

+
+- mmap() addr parameter.
+
+- mremap() new_address parameter.
+
+- prctl(PR_SET_MM, ``*``, ...) other than arg2 PR_SET_MM_MAP and
+  PR_SET_MM_MAP_SIZE.
+
+- prctl(PR_SET_MM, PR_SET_MM_MAP{,_SIZE}, ...) struct prctl_mm_map fields.

How did you generate this list and who will keep it up to date? How do you
know you haven't missed anything?

What about shared memory system calls: shmat, shmdt? The latest "arm64: untag
user pointers passed to the kernel" series doesn't untag these, thus we should
indicate here that these too are no supported.

Yes. We dropped them from a previous version of the series but they've
never been documented. I'll add something (unless someone has a real
use-case for using tags with shmat/shmdt).

-- 
Catalin