[PATCH] selftests/mm: Define PKEY_UNRESTRICTED for pkey_sighandler_tests

[Catalin Marinas]

On Thu, Nov 07, 2024 at 09:50:20AM -0700, Shuah Khan wrote:
> On 11/7/24 06:16, Kevin Brodsky wrote:
> > Commit 6e182dc9f268 ("selftests/mm: Use generic pkey register
> > manipulation") makes use of PKEY_UNRESTRICTED in
> > pkey_sighandler_tests. The macro has been proposed for addition to
> > uapi headers [1], but the patch hasn't landed yet.
> > 
> > Define PKEY_UNRESTRICTED in pkey-helpers.h for the time being to fix
> > the build.
> 
> What does mean to say "time being" - can this be removed in the
> future. If so please add a FIXME so this define can be removed
> later.

There's a dependency on this series:

https://lore.kernel.org/r/20241028090715.509527-2-yury.khrustalev@arm.com/

Which I did not notice. Typically the uapi patches are picked by Arnd
but first that series needs to be reposted with the comments addressed.

I think for now we either merge this fix from Kevin (happy to add a
FIXME comment when applying), change the kselftest to use 0 instead of
PKEY_UNRESTRICTED or revert the top two patches here:

https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/pkey-signal

I'm fine with all options really, it's not essential that we get the
kselftest patches above merged in 6.13.

-- 
Catalin