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Message-Id: <20170309142408.2868-1-kirill.shutemov@linux.intel.com>
Date: Thu, 9 Mar 2017 17:24:01 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Arnd Bergmann <arnd@...db.de>,
"H. Peter Anvin" <hpa@...or.com>
Cc: Andi Kleen <ak@...ux.intel.com>,
Dave Hansen <dave.hansen@...el.com>,
Andy Lutomirski <luto@...capital.net>,
Michal Hocko <mhocko@...e.com>, linux-arch@...r.kernel.org,
linux-mm@...ck.org, linux-kernel@...r.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCHv2 0/7] 5-level paging: prepare generic code
Here's relatively low-risk part of 5-level paging patchset.
Merging it now would make x86 5-level paging enabling in v4.12 easier.
Linus, please consider applying.
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.
v2:
- fix build on microblaze (Michal);
- comment for __ARCH_HAS_5LEVEL_HACK in kasan_populate_zero_shadow();
- acks from Michal;
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 <asm-generic/pgtable-nop4d.h>
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/microblaze/include/asm/page.h | 3 +-
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 | 44 ++++-
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 +++++---
64 files changed, 868 insertions(+), 147 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
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