linux-kernel - [PATCH v3 0/2] move __HAVE_ARCH_PTE

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Date:   Wed, 11 Apr 2018 10:03:34 +0200
From:   Laurent Dufour <ldufour@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org,
        linux-doc@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        Jerome Glisse <jglisse@...hat.com>, mhocko@...nel.org,
        aneesh.kumar@...ux.vnet.ibm.com, akpm@...ux-foundation.org,
        mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        "David S . Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Vineet Gupta <vgupta@...opsys.com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <albert@...ive.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        David Rientjes <rientjes@...gle.com>,
        Robin Murphy <robin.murphy@....com>
Subject: [PATCH v3 0/2] move __HAVE_ARCH_PTE_SPECIAL in Kconfig

The per architecture __HAVE_ARCH_PTE_SPECIAL is defined statically in the
per architecture header files. This doesn't allow to make other
configuration dependent on it.

The first patch of this series is replacing __HAVE_ARCH_PTE_SPECIAL by
CONFIG_ARCH_HAS_PTE_SPECIAL defined into the Kconfig files,
setting it automatically when architectures was already setting it in
header file.

The second patch is removing the odd define HAVE_PTE_SPECIAL which is a
duplicate of CONFIG_ARCH_HAS_PTE_SPECIAL.

There is no functional change introduced by this series.

--
Changes since v2:
 * remove __HAVE_ARCH_PTE_SPECIAL in arch/riscv/include/asm/pgtable-bits.h
 * use IS_ENABLED() instead of #ifdef blocks in patch 2

Laurent Dufour (2):
  mm: introduce ARCH_HAS_PTE_SPECIAL
  mm: remove odd HAVE_PTE_SPECIAL

 .../features/vm/pte_special/arch-support.txt          |  2 +-
 arch/arc/Kconfig                                      |  1 +
 arch/arc/include/asm/pgtable.h                        |  2 --
 arch/arm/Kconfig                                      |  1 +
 arch/arm/include/asm/pgtable-3level.h                 |  1 -
 arch/arm64/Kconfig                                    |  1 +
 arch/arm64/include/asm/pgtable.h                      |  2 --
 arch/powerpc/Kconfig                                  |  1 +
 arch/powerpc/include/asm/book3s/64/pgtable.h          |  3 ---
 arch/powerpc/include/asm/pte-common.h                 |  3 ---
 arch/riscv/Kconfig                                    |  1 +
 arch/riscv/include/asm/pgtable-bits.h                 |  3 ---
 arch/s390/Kconfig                                     |  1 +
 arch/s390/include/asm/pgtable.h                       |  1 -
 arch/sh/Kconfig                                       |  1 +
 arch/sh/include/asm/pgtable.h                         |  2 --
 arch/sparc/Kconfig                                    |  1 +
 arch/sparc/include/asm/pgtable_64.h                   |  3 ---
 arch/x86/Kconfig                                      |  1 +
 arch/x86/include/asm/pgtable_types.h                  |  1 -
 include/linux/pfn_t.h                                 |  4 ++--
 mm/Kconfig                                            |  3 +++
 mm/gup.c                                              |  4 ++--
 mm/memory.c                                           | 19 ++++++++-----------
 24 files changed, 25 insertions(+), 37 deletions(-)

-- 
2.7.4