From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kirill A. Shutemov" Subject: [PATCH 0/7] 5-level paging: prepare generic code Date: Mon, 6 Mar 2017 23:45:07 +0300 Message-ID: <20170306204514.1852-1-kirill.shutemov@linux.intel.com> Return-path: Sender: owner-linux-mm@kvack.org To: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Arnd Bergmann , "H. Peter Anvin" Cc: Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" List-Id: linux-arch.vger.kernel.org As per Linus' suggestion, I'm splitting generic part of 5-level paging enabling into separate patchset. I believe it's relatively low-risk and can be applied to v4.11. Merging it now would make x86 5-level paging enabling in v4.12 easier. The first patch is actually x86-specific: detect 5-level paging support. It boils down to single define. The rest of patchset converts Linux MMU abstraction from 4- to 5-level paging. Enabling of new abstraction in most cases requires adding single line of code in arch-specific code. The rest is taken care by asm-generic/. Changes to mm/ code are mostly mechanical: add support for new page table level -- p4d_t -- where we deal with pud_t now. Kirill A. Shutemov (7): x86/cpufeature: Add 5-level paging detection asm-generic: introduce 5level-fixup.h asm-generic: introduce __ARCH_USE_5LEVEL_HACK arch, mm: convert all architectures to use 5level-fixup.h asm-generic: introduce mm: convert generic code to 5-level paging mm: introduce __p4d_alloc() arch/arc/include/asm/hugepage.h | 1 + arch/arc/include/asm/pgtable.h | 1 + arch/arm/include/asm/pgtable.h | 1 + arch/arm64/include/asm/pgtable-types.h | 4 + arch/avr32/include/asm/pgtable-2level.h | 1 + arch/cris/include/asm/pgtable.h | 1 + arch/frv/include/asm/pgtable.h | 1 + arch/h8300/include/asm/pgtable.h | 1 + arch/hexagon/include/asm/pgtable.h | 1 + arch/ia64/include/asm/pgtable.h | 2 + arch/metag/include/asm/pgtable.h | 1 + arch/mips/include/asm/pgtable-32.h | 1 + arch/mips/include/asm/pgtable-64.h | 1 + arch/mn10300/include/asm/page.h | 1 + arch/nios2/include/asm/pgtable.h | 1 + arch/openrisc/include/asm/pgtable.h | 1 + arch/powerpc/include/asm/book3s/32/pgtable.h | 1 + arch/powerpc/include/asm/book3s/64/pgtable.h | 3 + arch/powerpc/include/asm/nohash/32/pgtable.h | 1 + arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 3 + arch/powerpc/include/asm/nohash/64/pgtable-64k.h | 1 + arch/s390/include/asm/pgtable.h | 1 + arch/score/include/asm/pgtable.h | 1 + arch/sh/include/asm/pgtable-2level.h | 1 + arch/sh/include/asm/pgtable-3level.h | 1 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/tile/include/asm/pgtable_32.h | 1 + arch/tile/include/asm/pgtable_64.h | 1 + arch/um/include/asm/pgtable-2level.h | 1 + arch/um/include/asm/pgtable-3level.h | 1 + arch/unicore32/include/asm/pgtable.h | 1 + arch/x86/include/asm/cpufeatures.h | 3 +- arch/x86/include/asm/pgtable_types.h | 4 + arch/xtensa/include/asm/pgtable.h | 1 + drivers/misc/sgi-gru/grufault.c | 9 +- fs/userfaultfd.c | 6 +- include/asm-generic/4level-fixup.h | 3 +- include/asm-generic/5level-fixup.h | 41 ++++ include/asm-generic/pgtable-nop4d-hack.h | 62 ++++++ include/asm-generic/pgtable-nop4d.h | 56 ++++++ include/asm-generic/pgtable-nopud.h | 48 ++--- include/asm-generic/pgtable.h | 48 ++++- include/asm-generic/tlb.h | 14 +- include/linux/hugetlb.h | 5 +- include/linux/kasan.h | 1 + include/linux/mm.h | 34 +++- lib/ioremap.c | 39 +++- mm/gup.c | 46 ++++- mm/huge_memory.c | 7 +- mm/hugetlb.c | 29 +-- mm/kasan/kasan_init.c | 35 +++- mm/memory.c | 230 +++++++++++++++++++---- mm/mlock.c | 1 + mm/mprotect.c | 26 ++- mm/mremap.c | 13 +- mm/page_vma_mapped.c | 6 +- mm/pagewalk.c | 32 +++- mm/pgtable-generic.c | 6 + mm/rmap.c | 7 +- mm/sparse-vmemmap.c | 22 ++- mm/swapfile.c | 26 ++- mm/userfaultfd.c | 23 ++- mm/vmalloc.c | 81 +++++--- 63 files changed, 857 insertions(+), 146 deletions(-) create mode 100644 include/asm-generic/5level-fixup.h create mode 100644 include/asm-generic/pgtable-nop4d-hack.h create mode 100644 include/asm-generic/pgtable-nop4d.h -- 2.11.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com ([134.134.136.65]:50862 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932487AbdCFUpi (ORCPT ); Mon, 6 Mar 2017 15:45:38 -0500 From: "Kirill A. Shutemov" Subject: [PATCH 0/7] 5-level paging: prepare generic code Date: Mon, 6 Mar 2017 23:45:07 +0300 Message-ID: <20170306204514.1852-1-kirill.shutemov@linux.intel.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Arnd Bergmann , "H. Peter Anvin" Cc: Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Message-ID: <20170306204507.C3SMYQKXBxI2Vp8S1UJKWS8zMCyVMvD0sjkm-onJkDk@z> As per Linus' suggestion, I'm splitting generic part of 5-level paging enabling into separate patchset. I believe it's relatively low-risk and can be applied to v4.11. Merging it now would make x86 5-level paging enabling in v4.12 easier. The first patch is actually x86-specific: detect 5-level paging support. It boils down to single define. The rest of patchset converts Linux MMU abstraction from 4- to 5-level paging. Enabling of new abstraction in most cases requires adding single line of code in arch-specific code. The rest is taken care by asm-generic/. Changes to mm/ code are mostly mechanical: add support for new page table level -- p4d_t -- where we deal with pud_t now. Kirill A. Shutemov (7): x86/cpufeature: Add 5-level paging detection asm-generic: introduce 5level-fixup.h asm-generic: introduce __ARCH_USE_5LEVEL_HACK arch, mm: convert all architectures to use 5level-fixup.h asm-generic: introduce mm: convert generic code to 5-level paging mm: introduce __p4d_alloc() arch/arc/include/asm/hugepage.h | 1 + arch/arc/include/asm/pgtable.h | 1 + arch/arm/include/asm/pgtable.h | 1 + arch/arm64/include/asm/pgtable-types.h | 4 + arch/avr32/include/asm/pgtable-2level.h | 1 + arch/cris/include/asm/pgtable.h | 1 + arch/frv/include/asm/pgtable.h | 1 + arch/h8300/include/asm/pgtable.h | 1 + arch/hexagon/include/asm/pgtable.h | 1 + arch/ia64/include/asm/pgtable.h | 2 + arch/metag/include/asm/pgtable.h | 1 + arch/mips/include/asm/pgtable-32.h | 1 + arch/mips/include/asm/pgtable-64.h | 1 + arch/mn10300/include/asm/page.h | 1 + arch/nios2/include/asm/pgtable.h | 1 + arch/openrisc/include/asm/pgtable.h | 1 + arch/powerpc/include/asm/book3s/32/pgtable.h | 1 + arch/powerpc/include/asm/book3s/64/pgtable.h | 3 + arch/powerpc/include/asm/nohash/32/pgtable.h | 1 + arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 3 + arch/powerpc/include/asm/nohash/64/pgtable-64k.h | 1 + arch/s390/include/asm/pgtable.h | 1 + arch/score/include/asm/pgtable.h | 1 + arch/sh/include/asm/pgtable-2level.h | 1 + arch/sh/include/asm/pgtable-3level.h | 1 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/tile/include/asm/pgtable_32.h | 1 + arch/tile/include/asm/pgtable_64.h | 1 + arch/um/include/asm/pgtable-2level.h | 1 + arch/um/include/asm/pgtable-3level.h | 1 + arch/unicore32/include/asm/pgtable.h | 1 + arch/x86/include/asm/cpufeatures.h | 3 +- arch/x86/include/asm/pgtable_types.h | 4 + arch/xtensa/include/asm/pgtable.h | 1 + drivers/misc/sgi-gru/grufault.c | 9 +- fs/userfaultfd.c | 6 +- include/asm-generic/4level-fixup.h | 3 +- include/asm-generic/5level-fixup.h | 41 ++++ include/asm-generic/pgtable-nop4d-hack.h | 62 ++++++ include/asm-generic/pgtable-nop4d.h | 56 ++++++ include/asm-generic/pgtable-nopud.h | 48 ++--- include/asm-generic/pgtable.h | 48 ++++- include/asm-generic/tlb.h | 14 +- include/linux/hugetlb.h | 5 +- include/linux/kasan.h | 1 + include/linux/mm.h | 34 +++- lib/ioremap.c | 39 +++- mm/gup.c | 46 ++++- mm/huge_memory.c | 7 +- mm/hugetlb.c | 29 +-- mm/kasan/kasan_init.c | 35 +++- mm/memory.c | 230 +++++++++++++++++++---- mm/mlock.c | 1 + mm/mprotect.c | 26 ++- mm/mremap.c | 13 +- mm/page_vma_mapped.c | 6 +- mm/pagewalk.c | 32 +++- mm/pgtable-generic.c | 6 + mm/rmap.c | 7 +- mm/sparse-vmemmap.c | 22 ++- mm/swapfile.c | 26 ++- mm/userfaultfd.c | 23 ++- mm/vmalloc.c | 81 +++++--- 63 files changed, 857 insertions(+), 146 deletions(-) create mode 100644 include/asm-generic/5level-fixup.h create mode 100644 include/asm-generic/pgtable-nop4d-hack.h create mode 100644 include/asm-generic/pgtable-nop4d.h -- 2.11.0