Messages in this thread |  | | From | Tong Tiangen <> | Subject | [PATCH -next v4 0/4]mm: page_table_check: add support on arm64 and riscv | Date | Mon, 18 Apr 2022 03:44:40 +0000 |
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Page table check performs extra verifications at the time when new pages become accessible from the userspace by getting their page table entries (PTEs PMDs etc.) added into the table. It is supported on X86[1].
This patchset made some simple changes and make it easier to support new architecture, then we support this feature on ARM64 and RISCV.
[1]https://lore.kernel.org/lkml/20211123214814.3756047-1-pasha.tatashin@soleen.com/
v3 -> v4: 1. Adapt to next-20220414
v2 -> v3: 1. Modify ptep_clear() in include/linux/pgtable.h, using IS_ENABLED according to the suggestions of Pasha.
v1 -> v2: 1. Fix arm64's pte/pmd/pud_user_accessible_page() according to the suggestions of Catalin. 2. Also fix riscv's pte_pmd_pud_user_accessible_page().
Kefeng Wang (2): mm: page_table_check: move pxx_user_accessible_page into x86 arm64: mm: add support for page table check
Tong Tiangen (2): mm: page_table_check: add hooks to public helpers riscv: mm: add support for page table check
arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 65 ++++++++++++++++++++++++--- arch/riscv/Kconfig | 1 + arch/riscv/include/asm/pgtable.h | 77 +++++++++++++++++++++++++++++--- arch/x86/include/asm/pgtable.h | 29 +++++++----- include/linux/pgtable.h | 26 +++++++---- mm/page_table_check.c | 25 ++++------- 7 files changed, 178 insertions(+), 46 deletions(-)
-- 2.25.1
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