mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Anshuman Khandual
6a10e76a56
[ Upstream commitff4c5a0de1] Commit48478b9f79("arm64/mm: Enable batched TLB flush in unmap_hotplug_range") inadvertently introduced redundant TLB invalidation when clearing a block entry, resulting in unnecessary broadcast invalidation on CPUs without support for range-based invalidation. Re-introduce the old behaviour, along with some expanded comments to help people working in this area next time around. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reported-by: Ben Hutchings <ben@decadent.org.uk> Closes: https://lore.kernel.org/all/b0d5836032ce3135bfc473f6bff791306d086925.camel@decadent.org.uk/ Fixes:48478b9f79("arm64/mm: Enable batched TLB flush in unmap_hotplug_range()") Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> [will: Reword comments and commit message] Signed-off-by: Will Deacon <will@kernel.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.