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Message-ID: <0b023809-8138-a44f-83e2-db54a7446954@huawei.com>
Date: Mon, 18 Apr 2022 14:12:09 +0800
From: Tong Tiangen <tongtiangen@...wei.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>,
"H. Peter Anvin" <hpa@...or.com>,
Pasha Tatashin <pasha.tatashin@...een.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>
CC: <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-riscv@...ts.infradead.org>,
Kefeng Wang <wangkefeng.wang@...wei.com>,
Guohanjun <guohanjun@...wei.com>
Subject: Re: [PATCH -next v4 0/4]mm: page_table_check: add support on arm64
and riscv
Hi Andrew, Catalin, Palmer:
This patch modifies the code related to the mm/x86/arm64/riscv, who can
help me merge it if no object, Maybe Andrew is more appropriate?
Thanks,
Tong.
在 2022/4/18 11:44, Tong Tiangen 写道:
> 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(-)
>
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