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[ Upstream commit00de2c9f26] In clear_flush(), the original pte may be a present entry, so we should use ptep_clear() to let page_table_check track the pte clearing operation, otherwise it may cause false positive in subsequent set_pte_at(). Link: https://lkml.kernel.org/r/20230810093241.1181142-1-qi.zheng@linux.dev Fixes:42b2547137("arm64/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK") Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com> Acked-by: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.