linux-kernel - [PATCH 0/6] mm/mmap: Enable more platforms with ARCH_HAS_VM_GET_PAGE

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Message-Id: <20220603101411.488970-1-anshuman.khandual@arm.com>
Date:   Fri,  3 Jun 2022 15:44:05 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-mm@...ck.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Jonas Bonn <jonas@...thpole.se>,
        Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
        openrisc@...ts.librecores.org, linux-csky@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/6] mm/mmap: Enable more platforms with ARCH_HAS_VM_GET_PAGE_PROT

>From the last discussion [1], some more platforms (s390, mips, csky, nios2,
openrisc) were willing to enable ARCH_HAS_VM_GET_PAGE_PROT and also provide
custom vm_get_page_prot() via switch case statement implementation without
any objection. All those platform specific patches have already been acked.

This series makes protection_map[] array private on platforms which define
their own vm_get_page_prot() via ARCH_HAS_VM_GET_PAGE_PROT, and also drops
off their __PXXX/__SXXX macros. This also enables new platforms as in this
series, to drop off their __PXXX/__SXXX macros as generic protection_map[]
is no longer visible to them.

[1] https://lore.kernel.org/all/1646045273-9343-2-git-send-email-anshuman.khandual@arm.com/

This series applies on current mainline and also has been build tested on
multiple platforms.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Heiko Carstens <hca@...ux.ibm.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Dinh Nguyen <dinguyen@...nel.org>
Cc: Jonas Bonn <jonas@...thpole.se>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: x86@...nel.org
Cc: openrisc@...ts.librecores.org
Cc: linux-csky@...r.kernel.org
Cc: linux-mips@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: sparclinux@...r.kernel.org
Cc: linux-s390@...r.kernel.org
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org

Anshuman Khandual (6):
  mm/mmap: Restrict generic protection_map[] array visibility
  s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
  mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
  csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
  nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
  openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT

 arch/arm64/include/asm/pgtable-prot.h | 18 --------
 arch/arm64/mm/mmap.c                  | 21 ++++++++++
 arch/csky/Kconfig                     |  1 +
 arch/csky/include/asm/pgtable.h       | 18 --------
 arch/csky/mm/init.c                   | 32 ++++++++++++++
 arch/mips/Kconfig                     |  1 +
 arch/mips/include/asm/pgtable.h       | 22 ----------
 arch/mips/mm/cache.c                  | 60 ++++++++++++++++-----------
 arch/nios2/Kconfig                    |  1 +
 arch/nios2/include/asm/pgtable.h      | 24 -----------
 arch/nios2/mm/init.c                  | 47 +++++++++++++++++++++
 arch/openrisc/Kconfig                 |  1 +
 arch/openrisc/include/asm/pgtable.h   | 18 --------
 arch/openrisc/mm/init.c               | 41 ++++++++++++++++++
 arch/powerpc/include/asm/pgtable.h    |  2 +
 arch/powerpc/mm/book3s64/pgtable.c    | 20 +++++++++
 arch/s390/Kconfig                     |  1 +
 arch/s390/include/asm/pgtable.h       | 17 --------
 arch/s390/mm/mmap.c                   | 33 +++++++++++++++
 arch/sparc/include/asm/pgtable_32.h   |  2 +
 arch/sparc/include/asm/pgtable_64.h   | 19 ---------
 arch/sparc/mm/init_64.c               | 20 +++++++++
 arch/x86/include/asm/pgtable_types.h  | 19 ---------
 arch/x86/mm/pgprot.c                  | 19 +++++++++
 include/linux/mm.h                    |  2 +
 mm/mmap.c                             |  2 +-
 26 files changed, 280 insertions(+), 181 deletions(-)

-- 
2.25.1