__SXXX/__PXXX macros is an unnecessary abstraction layer in creating the generic protection_map[] array which is used for vm_get_page_prot(). This abstraction layer can be avoided, if the platforms just define the array protection_map[] for all possible vm_flags access permission combinations and also export vm_get_page_prot() implementation. This series drops __SXXX/__PXXX macros from across platforms in the tree. First it build protects generic protection_map[] array with '#ifdef __P000' and moves it inside platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Later this build protects same array with '#ifdef ARCH_HAS_VM_GET_PAGE_PROT' and moves inside remaining platforms while enabling ARCH_HAS_VM_GET_PAGE_PROT. This adds a new macro DECLARE_VM_GET_PAGE_PROT defining the current generic vm_get_page_prot(), in order for it to be reused on platforms that do not require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just be dropped, as all platforms now define and export vm_get_page_prot(), via looking up a private and static protection_map[] array. protection_map[] data type is the following for all platforms without deviation (except the powerpc one which is shared between 32 and 64 bit platforms), keeping it unchanged for now. static pgprot_t protection_map[16] __ro_after_init This series applies on v5.19-rc3 and has been build tested for multiple platforms. While here it has dropped off all previous tags from folks after the current restructuring. Series common CC list has been expanded to cover all impacted platforms for wider reach. - Anshuman Changes in V4: - Both protection_map[] and vm_get_page_prot() moves inside all platforms - Split patches to create modular changes for individual platforms - Add macro DECLARE_VM_GET_PAGE_PROT defining generic vm_get_page_prot() - Drop ARCH_HAS_VM_GET_PAGE_PROT Changes in V3: https://lore.kernel.org/all/20220616040924.1022607-1-anshuman.khandual@xxxxxxx/ - Fix build issues on powerpc and riscv Changes in V2: https://lore.kernel.org/all/20220613053354.553579-1-anshuman.khandual@xxxxxxx/ - Add 'const' identifier to protection_map[] on powerpc - Dropped #ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT check from sparc 32 - Dropped protection_map[] init from sparc 64 - Dropped all new platform changes subscribing ARCH_HAS_VM_GET_PAGE_PROT - Added a second patch which moves generic protection_map[] array into all remaining platforms (!ARCH_HAS_VM_GET_PAGE_PROT) Changes in V1: https://lore.kernel.org/all/20220603101411.488970-1-anshuman.khandual@xxxxxxx/ Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx> Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Cc: sparclinux@xxxxxxxxxxxxxxx Cc: x86@xxxxxxxxxx Cc: openrisc@xxxxxxxxxxxxxxxxxxxx Cc: linux-xtensa@xxxxxxxxxxxxxxxx Cc: linux-csky@xxxxxxxxxxxxxxx Cc: linux-hexagon@xxxxxxxxxxxxxxx Cc: linux-parisc@xxxxxxxxxxxxxxx Cc: linux-alpha@xxxxxxxxxxxxxxx Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx Cc: linux-csky@xxxxxxxxxxxxxxx Cc: linux-s390@xxxxxxxxxxxxxxx Cc: linux-ia64@xxxxxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxxx Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Cc: linux-um@xxxxxxxxxxxxxxxxxxx Cc: linux-sh@xxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Anshuman Khandual (26): mm/mmap: Build protect protection_map[] with __P000 mm/mmap: Define DECLARE_VM_GET_PAGE_PROT powerpc/mm: Move protection_map[] inside the platform sparc/mm: Move protection_map[] inside the platform arm64/mm: Move protection_map[] inside the platform x86/mm: Move protection_map[] inside the platform mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT extensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT arch/alpha/include/asm/pgtable.h | 17 ------- arch/alpha/mm/init.c | 22 +++++++++ arch/arc/include/asm/pgtable-bits-arcv2.h | 18 -------- arch/arc/mm/mmap.c | 20 +++++++++ arch/arm/include/asm/pgtable.h | 17 ------- arch/arm/lib/uaccess_with_memcpy.c | 2 +- arch/arm/mm/mmu.c | 20 +++++++++ arch/arm64/Kconfig | 1 - arch/arm64/include/asm/pgtable-prot.h | 18 -------- arch/arm64/mm/mmap.c | 21 +++++++++ arch/csky/include/asm/pgtable.h | 18 -------- arch/csky/mm/init.c | 20 +++++++++ arch/hexagon/include/asm/pgtable.h | 27 ----------- arch/hexagon/mm/init.c | 42 +++++++++++++++++ arch/ia64/include/asm/pgtable.h | 18 -------- arch/ia64/mm/init.c | 28 +++++++++++- arch/loongarch/include/asm/pgtable-bits.h | 19 -------- arch/loongarch/mm/cache.c | 46 +++++++++++++++++++ arch/m68k/include/asm/mcf_pgtable.h | 54 ---------------------- arch/m68k/include/asm/motorola_pgtable.h | 22 --------- arch/m68k/include/asm/sun3_pgtable.h | 17 ------- arch/m68k/mm/mcfmmu.c | 55 +++++++++++++++++++++++ arch/m68k/mm/motorola.c | 20 +++++++++ arch/m68k/mm/sun3mmu.c | 20 +++++++++ arch/microblaze/include/asm/pgtable.h | 17 ------- arch/microblaze/mm/init.c | 20 +++++++++ arch/mips/include/asm/pgtable.h | 22 --------- arch/mips/mm/cache.c | 3 ++ arch/nios2/include/asm/pgtable.h | 16 ------- arch/nios2/mm/init.c | 20 +++++++++ arch/openrisc/include/asm/pgtable.h | 18 -------- arch/openrisc/mm/init.c | 20 +++++++++ arch/parisc/include/asm/pgtable.h | 18 -------- arch/parisc/mm/init.c | 20 +++++++++ arch/powerpc/Kconfig | 1 - arch/powerpc/include/asm/pgtable.h | 20 +-------- arch/powerpc/mm/pgtable.c | 24 ++++++++++ arch/riscv/include/asm/pgtable.h | 20 --------- arch/riscv/mm/init.c | 20 +++++++++ arch/s390/include/asm/pgtable.h | 17 ------- arch/s390/mm/mmap.c | 20 +++++++++ arch/sh/include/asm/pgtable.h | 17 ------- arch/sh/mm/mmap.c | 20 +++++++++ arch/sparc/Kconfig | 1 - arch/sparc/include/asm/pgtable_32.h | 19 -------- arch/sparc/include/asm/pgtable_64.h | 19 -------- arch/sparc/mm/init_32.c | 20 +++++++++ arch/sparc/mm/init_64.c | 3 ++ arch/um/include/asm/pgtable.h | 17 ------- arch/um/kernel/mem.c | 20 +++++++++ arch/x86/Kconfig | 1 - arch/x86/include/asm/pgtable_types.h | 19 -------- arch/x86/mm/mem_encrypt_amd.c | 7 ++- arch/x86/mm/pgprot.c | 27 +++++++++++ arch/x86/um/mem_32.c | 2 +- arch/xtensa/include/asm/pgtable.h | 18 -------- arch/xtensa/mm/init.c | 20 +++++++++ include/linux/mm.h | 9 +++- mm/Kconfig | 3 -- mm/mmap.c | 27 ----------- 60 files changed, 584 insertions(+), 543 deletions(-) -- 2.25.1
