Sandipan Das 266d8f7586 powerpc/pkeys: Remove unused code
This removes arch_supports_pkeys(), arch_usable_pkeys() and
thread_pkey_regs_*() which are remnants from the following:

commit 06bb53b338 ("powerpc: store and restore the pkey state across context switches")
commit 2cd4bd192e ("powerpc/pkeys: Fix handling of pkey state across fork()")
commit cf43d3b264 ("powerpc: Enable pkey subsystem")

arch_supports_pkeys() and arch_usable_pkeys() were unused
since their introduction while thread_pkey_regs_*() became
unused after the introduction of the following:

commit d5fa30e699 ("powerpc/book3s64/pkeys: Reset userspace AMR correctly on exec")
commit 48a8ab4eeb ("powerpc/book3s64/pkeys: Don't update SPRN_AMR when in kernel mode")

Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Reviewed-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210202150050.75335-1-sandipan@linux.ibm.com
2021-02-09 01:09:44 +11:00
2021-02-09 01:09:44 +11:00
2021-01-03 15:55:30 -08:00

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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