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Subject[PATCH 0/9] [v2] x86, pkeys: two protection keys bug fixes
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Changes from v1:
* Added Fixes: and cc'd stable. No code changes.

--

This fixes two bugs, and adds selftests to make sure they stay fixed:

1. pkey 0 was not usable via mprotect_pkey() because it had never
been explicitly allocated.
2. mprotect(PROT_EXEC) memory could sometimes be left with the
implicit exec-only protection key assigned.

I already posted #1 previously. I'm including them both here because
I don't think it's been picked up in case folks want to pull these
all in a single bundle.

Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Michael Ellermen <mpe@ellerman.id.au>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>p
Cc: Shuah Khan <shuah@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>

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