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5c0541e11c
In commiteacd0e950d("ARC: [mm] Lazy D-cache flush (non aliasing VIPT)"), arc adds the need to flush dcache to make icache see the code page change. This also requires special handling for clear_user_(high)page(). Introduce cpu_icache_is_aliasing() to make MM code query special clear_user_(high)page() easier. This will be used by the following commit. Link: https://lkml.kernel.org/r/20241209182326.2955963-1-ziy@nvidia.com Fixes:5708d96da2("mm: avoid zeroing user movable page twice with init_on_alloc=1") Signed-off-by: Zi Yan <ziy@nvidia.com> Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Alexander Potapenko <glider@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Vineet Gupta <vgupta@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.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 reStructuredText 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.