Christophe Leroy fc4999864b powerpc/4xx: Fix setup_kuep() on SMP
On SMP, setup_kuep() is also called from start_secondary() since
commit 86f46f3432 ("powerpc/32s: Initialise KUAP and KUEP in C").

start_secondary() is not an __init function.

Remove the __init marker from setup_kuep() and bail out when
not caller on the first CPU as the work is already done.

Fixes: 10248dcba1 ("powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP)")
Fixes: 86f46f3432 ("powerpc/32s: Initialise KUAP and KUEP in C")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8ee05934288994a65743a987acb1558f12c0c8c1.1624969450.git.christophe.leroy@csgroup.eu
2021-06-30 22:21:02 +10:00
2021-06-30 22:21:02 +10:00
2021-05-07 00:26:34 -07:00
2021-05-14 19:41:32 -07:00
2021-05-16 15:27:44 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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