From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Steven Price" <steven.price@arm.com>, "Andy Lutomirski" <luto@kernel.org>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Arnd Bergmann" <arnd@arndb.de>, "Borislav Petkov" <bp@alien8.de>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Ingo Molnar" <mingo@redhat.com>, "James Morse" <james.morse@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Peter Zijlstra" <peterz@infradead.org>, "Thomas Gleixner" <tglx@linutronix.de>, "Will Deacon" <will.deacon@arm.com>, x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Mark Rutland" <Mark.Rutland@arm.com>, "Liang, Kan" <kan.liang@linux.intel.com> Subject: [PATCH v3 00/34] Convert x86 & arm64 to use generic page walk Date: Wed, 27 Feb 2019 17:05:34 +0000 [thread overview] Message-ID: <20190227170608.27963-1-steven.price@arm.com> (raw) Most architectures current have a debugfs file for dumping the kernel page tables. Currently each architecture has to implement custom functions for walking the page tables because the generic walk_page_range() function is unable to walk the page tables used by the kernel. This series extends the capabilities of walk_page_range() so that it can deal with the page tables of the kernel (which have no VMAs and can contain larger huge pages than exist for user space). x86 and arm64 are then converted to make use of walk_page_range() removing the custom page table walkers. To enable a generic page table walker to walk the unusual mappings of the kernel we need to implement a set of functions which let us know when the walker has reached the leaf entry. Since arm, powerpc, s390, sparc and x86 all have p?d_large macros lets standardise on that and implement those that are missing. Potentially future changes could unify the implementations of the debugfs walkers further, moving the common functionality into common code. This would require a common way of handling the effective permissions (currently implemented only for x86) along with a per-arch way of formatting the page table information for debugfs. One immediate benefit would be getting the KASAN speed up optimisation in arm64 (and other arches) which is currently only implemented for x86. Changes since v2: * Rather than attemping to provide generic macros, actually implement p?d_large() for each architecture. Changes since v1: * Added p4d_large() macro * Comments to explain p?d_large() macro semantics * Expanded comment for pte_hole() callback to explain mapping between depth and P?D * Handle folded page tables at all levels, so depth from pte_hole() ignores folding at any level (see real_depth() function in mm/pagewalk.c) Steven Price (34): alpha: mm: Add p?d_large() definitions arc: mm: Add p?d_large() definitions arm: mm: Add p?d_large() definitions arm64: mm: Add p?d_large() definitions c6x: mm: Add p?d_large() definitions csky: mm: Add p?d_large() definitions hexagon: mm: Add p?d_large() definitions ia64: mm: Add p?d_large() definitions m68k: mm: Add p?d_large() definitions microblaze: mm: Add p?d_large() definitions mips: mm: Add p?d_large() definitions nds32: mm: Add p?d_large() definitions nios2: mm: Add p?d_large() definitions openrisc: mm: Add p?d_large() definitions parisc: mm: Add p?d_large() definitions powerpc: mm: Add p?d_large() definitions riscv: mm: Add p?d_large() definitions s390: mm: Add p?d_large() definitions sh: mm: Add p?d_large() definitions sparc: mm: Add p?d_large() definitions um: mm: Add p?d_large() definitions unicore32: mm: Add p?d_large() definitions xtensa: mm: Add p?d_large() definitions mm: Add generic p?d_large() macros mm: pagewalk: Add p4d_entry() and pgd_entry() mm: pagewalk: Allow walking without vma mm: pagewalk: Add 'depth' parameter to pte_hole mm: pagewalk: Add test_p?d callbacks arm64: mm: Convert mm/dump.c to use walk_page_range() x86/mm: Point to struct seq_file from struct pg_state x86/mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct x86/mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct x86/mm: Convert ptdump_walk_pgd_level_core() to take an mm_struct x86: mm: Convert dump_pagetables to use walk_page_range arch/alpha/include/asm/pgtable.h | 2 + arch/arc/include/asm/pgtable.h | 1 + arch/arm/include/asm/pgtable-2level.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + arch/arm64/include/asm/pgtable.h | 2 + arch/arm64/mm/dump.c | 108 +++--- arch/c6x/include/asm/pgtable.h | 2 + arch/csky/include/asm/pgtable.h | 2 + arch/hexagon/include/asm/pgtable.h | 5 + arch/ia64/include/asm/pgtable.h | 3 + arch/m68k/include/asm/mcf_pgtable.h | 2 + arch/m68k/include/asm/motorola_pgtable.h | 2 + arch/m68k/include/asm/pgtable_no.h | 1 + arch/m68k/include/asm/sun3_pgtable.h | 2 + arch/microblaze/include/asm/pgtable.h | 2 + arch/mips/include/asm/pgtable-32.h | 5 + arch/mips/include/asm/pgtable-64.h | 15 + arch/mips/include/asm/pgtable-bits.h | 2 +- arch/nds32/include/asm/pgtable.h | 2 + arch/nios2/include/asm/pgtable.h | 5 + arch/openrisc/include/asm/pgtable.h | 1 + arch/parisc/include/asm/pgtable.h | 3 + arch/powerpc/include/asm/book3s/32/pgtable.h | 1 + arch/powerpc/include/asm/book3s/64/pgtable.h | 27 +- arch/powerpc/include/asm/nohash/32/pgtable.h | 1 + .../include/asm/nohash/64/pgtable-4k.h | 1 + arch/powerpc/kvm/book3s_64_mmu_radix.c | 12 +- arch/riscv/include/asm/pgtable-64.h | 6 + arch/riscv/include/asm/pgtable.h | 6 + arch/s390/include/asm/pgtable.h | 10 + arch/sh/include/asm/pgtable-3level.h | 1 + arch/sh/include/asm/pgtable_32.h | 1 + arch/sh/include/asm/pgtable_64.h | 1 + arch/sparc/include/asm/pgtable_32.h | 10 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/um/include/asm/pgtable-3level.h | 1 + arch/um/include/asm/pgtable.h | 1 + arch/unicore32/include/asm/pgtable.h | 1 + arch/x86/include/asm/pgtable.h | 26 +- arch/x86/mm/debug_pagetables.c | 8 +- arch/x86/mm/dump_pagetables.c | 342 +++++++++--------- arch/x86/platform/efi/efi_32.c | 2 +- arch/x86/platform/efi/efi_64.c | 4 +- arch/xtensa/include/asm/pgtable.h | 1 + fs/proc/task_mmu.c | 4 +- include/asm-generic/4level-fixup.h | 1 + include/asm-generic/5level-fixup.h | 1 + include/asm-generic/pgtable-nop4d-hack.h | 1 + include/asm-generic/pgtable-nop4d.h | 1 + include/asm-generic/pgtable-nopmd.h | 1 + include/asm-generic/pgtable-nopud.h | 1 + include/linux/mm.h | 26 +- mm/hmm.c | 2 +- mm/migrate.c | 1 + mm/mincore.c | 1 + mm/pagewalk.c | 107 ++++-- 56 files changed, 489 insertions(+), 291 deletions(-) -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Mark Rutland" <Mark.Rutland@arm.com>, x86@kernel.org, "Arnd Bergmann" <arnd@arndb.de>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Peter Zijlstra" <peterz@infradead.org>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Will Deacon" <will.deacon@arm.com>, linux-kernel@vger.kernel.org, "Steven Price" <steven.price@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Ingo Molnar" <mingo@redhat.com>, "Borislav Petkov" <bp@alien8.de>, "Andy Lutomirski" <luto@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>, "James Morse" <james.morse@arm.com>, "Thomas Gleixner" <tglx@linutronix.de>, linux-arm-kernel@lists.infradead.org, "Liang, Kan" <kan.liang@linux.intel.com> Subject: [PATCH v3 00/34] Convert x86 & arm64 to use generic page walk Date: Wed, 27 Feb 2019 17:05:34 +0000 [thread overview] Message-ID: <20190227170608.27963-1-steven.price@arm.com> (raw) Most architectures current have a debugfs file for dumping the kernel page tables. Currently each architecture has to implement custom functions for walking the page tables because the generic walk_page_range() function is unable to walk the page tables used by the kernel. This series extends the capabilities of walk_page_range() so that it can deal with the page tables of the kernel (which have no VMAs and can contain larger huge pages than exist for user space). x86 and arm64 are then converted to make use of walk_page_range() removing the custom page table walkers. To enable a generic page table walker to walk the unusual mappings of the kernel we need to implement a set of functions which let us know when the walker has reached the leaf entry. Since arm, powerpc, s390, sparc and x86 all have p?d_large macros lets standardise on that and implement those that are missing. Potentially future changes could unify the implementations of the debugfs walkers further, moving the common functionality into common code. This would require a common way of handling the effective permissions (currently implemented only for x86) along with a per-arch way of formatting the page table information for debugfs. One immediate benefit would be getting the KASAN speed up optimisation in arm64 (and other arches) which is currently only implemented for x86. Changes since v2: * Rather than attemping to provide generic macros, actually implement p?d_large() for each architecture. Changes since v1: * Added p4d_large() macro * Comments to explain p?d_large() macro semantics * Expanded comment for pte_hole() callback to explain mapping between depth and P?D * Handle folded page tables at all levels, so depth from pte_hole() ignores folding at any level (see real_depth() function in mm/pagewalk.c) Steven Price (34): alpha: mm: Add p?d_large() definitions arc: mm: Add p?d_large() definitions arm: mm: Add p?d_large() definitions arm64: mm: Add p?d_large() definitions c6x: mm: Add p?d_large() definitions csky: mm: Add p?d_large() definitions hexagon: mm: Add p?d_large() definitions ia64: mm: Add p?d_large() definitions m68k: mm: Add p?d_large() definitions microblaze: mm: Add p?d_large() definitions mips: mm: Add p?d_large() definitions nds32: mm: Add p?d_large() definitions nios2: mm: Add p?d_large() definitions openrisc: mm: Add p?d_large() definitions parisc: mm: Add p?d_large() definitions powerpc: mm: Add p?d_large() definitions riscv: mm: Add p?d_large() definitions s390: mm: Add p?d_large() definitions sh: mm: Add p?d_large() definitions sparc: mm: Add p?d_large() definitions um: mm: Add p?d_large() definitions unicore32: mm: Add p?d_large() definitions xtensa: mm: Add p?d_large() definitions mm: Add generic p?d_large() macros mm: pagewalk: Add p4d_entry() and pgd_entry() mm: pagewalk: Allow walking without vma mm: pagewalk: Add 'depth' parameter to pte_hole mm: pagewalk: Add test_p?d callbacks arm64: mm: Convert mm/dump.c to use walk_page_range() x86/mm: Point to struct seq_file from struct pg_state x86/mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct x86/mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct x86/mm: Convert ptdump_walk_pgd_level_core() to take an mm_struct x86: mm: Convert dump_pagetables to use walk_page_range arch/alpha/include/asm/pgtable.h | 2 + arch/arc/include/asm/pgtable.h | 1 + arch/arm/include/asm/pgtable-2level.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + arch/arm64/include/asm/pgtable.h | 2 + arch/arm64/mm/dump.c | 108 +++--- arch/c6x/include/asm/pgtable.h | 2 + arch/csky/include/asm/pgtable.h | 2 + arch/hexagon/include/asm/pgtable.h | 5 + arch/ia64/include/asm/pgtable.h | 3 + arch/m68k/include/asm/mcf_pgtable.h | 2 + arch/m68k/include/asm/motorola_pgtable.h | 2 + arch/m68k/include/asm/pgtable_no.h | 1 + arch/m68k/include/asm/sun3_pgtable.h | 2 + arch/microblaze/include/asm/pgtable.h | 2 + arch/mips/include/asm/pgtable-32.h | 5 + arch/mips/include/asm/pgtable-64.h | 15 + arch/mips/include/asm/pgtable-bits.h | 2 +- arch/nds32/include/asm/pgtable.h | 2 + arch/nios2/include/asm/pgtable.h | 5 + arch/openrisc/include/asm/pgtable.h | 1 + arch/parisc/include/asm/pgtable.h | 3 + arch/powerpc/include/asm/book3s/32/pgtable.h | 1 + arch/powerpc/include/asm/book3s/64/pgtable.h | 27 +- arch/powerpc/include/asm/nohash/32/pgtable.h | 1 + .../include/asm/nohash/64/pgtable-4k.h | 1 + arch/powerpc/kvm/book3s_64_mmu_radix.c | 12 +- arch/riscv/include/asm/pgtable-64.h | 6 + arch/riscv/include/asm/pgtable.h | 6 + arch/s390/include/asm/pgtable.h | 10 + arch/sh/include/asm/pgtable-3level.h | 1 + arch/sh/include/asm/pgtable_32.h | 1 + arch/sh/include/asm/pgtable_64.h | 1 + arch/sparc/include/asm/pgtable_32.h | 10 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/um/include/asm/pgtable-3level.h | 1 + arch/um/include/asm/pgtable.h | 1 + arch/unicore32/include/asm/pgtable.h | 1 + arch/x86/include/asm/pgtable.h | 26 +- arch/x86/mm/debug_pagetables.c | 8 +- arch/x86/mm/dump_pagetables.c | 342 +++++++++--------- arch/x86/platform/efi/efi_32.c | 2 +- arch/x86/platform/efi/efi_64.c | 4 +- arch/xtensa/include/asm/pgtable.h | 1 + fs/proc/task_mmu.c | 4 +- include/asm-generic/4level-fixup.h | 1 + include/asm-generic/5level-fixup.h | 1 + include/asm-generic/pgtable-nop4d-hack.h | 1 + include/asm-generic/pgtable-nop4d.h | 1 + include/asm-generic/pgtable-nopmd.h | 1 + include/asm-generic/pgtable-nopud.h | 1 + include/linux/mm.h | 26 +- mm/hmm.c | 2 +- mm/migrate.c | 1 + mm/mincore.c | 1 + mm/pagewalk.c | 107 ++++-- 56 files changed, 489 insertions(+), 291 deletions(-) -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2019-02-27 17:06 UTC|newest] Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-02-27 17:05 Steven Price [this message] 2019-02-27 17:05 ` [PATCH v3 00/34] Convert x86 & arm64 to use generic page walk Steven Price 2019-02-27 17:05 ` [PATCH v3 01/34] alpha: mm: Add p?d_large() definitions Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 02/34] arc: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 18:18 ` Vineet Gupta 2019-02-27 18:18 ` Vineet Gupta 2019-02-27 18:18 ` Vineet Gupta 2019-02-27 18:18 ` Vineet Gupta 2019-02-27 17:05 ` [PATCH v3 03/34] arm: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-03-01 21:47 ` Kirill A. Shutemov 2019-03-01 21:47 ` Kirill A. Shutemov 2019-03-04 11:56 ` Steven Price 2019-03-04 11:56 ` Steven Price 2019-03-04 13:10 ` Kirill A. Shutemov 2019-03-04 13:10 ` Kirill A. Shutemov 2019-02-27 17:05 ` [PATCH v3 04/34] arm64: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 05/34] c6x: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-03-01 21:48 ` Kirill A. Shutemov 2019-03-01 21:48 ` Kirill A. Shutemov 2019-03-04 12:01 ` Steven Price 2019-03-04 12:01 ` Steven Price 2019-03-04 13:11 ` Kirill A. Shutemov 2019-03-04 13:11 ` Kirill A. Shutemov 2019-02-27 17:05 ` [PATCH v3 06/34] csky: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-03-01 21:51 ` Kirill A. Shutemov 2019-03-01 21:51 ` Kirill A. Shutemov 2019-02-27 17:05 ` [PATCH v3 07/34] hexagon: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 08/34] ia64: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-03-01 21:57 ` Kirill A. Shutemov 2019-03-01 21:57 ` Kirill A. Shutemov 2019-03-01 21:57 ` Kirill A. Shutemov 2019-03-04 13:16 ` Steven Price 2019-03-04 13:16 ` Steven Price 2019-03-04 13:16 ` Steven Price 2019-03-04 19:06 ` Luck, Tony 2019-03-04 19:06 ` Luck, Tony 2019-03-04 19:06 ` Luck, Tony 2019-03-06 13:45 ` Steven Price 2019-03-06 13:45 ` Steven Price 2019-03-06 13:45 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 09/34] m68k: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 19:27 ` Geert Uytterhoeven 2019-02-27 19:27 ` Geert Uytterhoeven 2019-02-28 11:36 ` Mike Rapoport 2019-02-28 11:36 ` Mike Rapoport 2019-02-28 11:53 ` Geert Uytterhoeven 2019-02-28 11:53 ` Geert Uytterhoeven 2019-02-28 12:04 ` Steven Price 2019-02-28 12:04 ` Steven Price 2019-03-01 11:45 ` Mike Rapoport 2019-03-01 11:45 ` Mike Rapoport 2019-02-27 17:05 ` [PATCH v3 10/34] microblaze: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 11/34] mips: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-28 2:15 ` Paul Burton 2019-02-28 2:15 ` Paul Burton 2019-02-28 12:11 ` Steven Price 2019-02-28 12:11 ` Steven Price 2019-02-28 18:55 ` Paul Burton 2019-02-28 18:55 ` Paul Burton 2019-03-01 11:02 ` Steven Price 2019-03-01 11:02 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 12/34] nds32: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 13/34] nios2: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 14/34] openrisc: " Steven Price 2019-02-27 17:05 ` [OpenRISC] " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 15/34] parisc: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 18:54 ` Helge Deller 2019-02-27 18:54 ` Helge Deller 2019-03-01 22:12 ` Kirill A. Shutemov 2019-03-01 22:12 ` Kirill A. Shutemov 2019-03-05 21:45 ` Helge Deller 2019-03-05 21:45 ` Helge Deller 2019-02-27 17:05 ` [PATCH v3 16/34] powerpc: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 17/34] riscv: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 18/34] s390: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:40 ` Martin Schwidefsky 2019-02-27 17:40 ` Martin Schwidefsky 2019-02-28 11:43 ` Steven Price 2019-02-28 11:43 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 19/34] sh: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 20/34] sparc: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 18:38 ` David Miller 2019-02-27 18:38 ` David Miller 2019-02-27 18:38 ` David Miller 2019-02-28 11:49 ` Steven Price 2019-02-28 11:49 ` Steven Price 2019-02-28 11:49 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 21/34] um: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 22/34] unicore32: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 23/34] xtensa: " Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:29 ` Max Filippov 2019-02-27 17:29 ` Max Filippov 2019-02-27 17:05 ` [PATCH v3 24/34] mm: Add generic p?d_large() macros Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:05 ` [PATCH v3 25/34] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price 2019-02-27 17:05 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 26/34] mm: pagewalk: Allow walking without vma Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 27/34] mm: pagewalk: Add 'depth' parameter to pte_hole Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:38 ` Dave Hansen 2019-02-27 17:38 ` Dave Hansen 2019-02-28 11:28 ` Steven Price 2019-02-28 11:28 ` Steven Price 2019-02-28 19:00 ` Dave Hansen 2019-02-28 19:00 ` Dave Hansen 2019-03-01 11:24 ` Steven Price 2019-03-01 11:24 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 28/34] mm: pagewalk: Add test_p?d callbacks Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 29/34] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 30/34] x86/mm: Point to struct seq_file from struct pg_state Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 31/34] x86/mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 32/34] x86/mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 33/34] x86/mm: Convert ptdump_walk_pgd_level_core() " Steven Price 2019-02-27 17:06 ` Steven Price 2019-02-27 17:06 ` [PATCH v3 34/34] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price 2019-02-27 17:06 ` Steven Price
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