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212c439bdd
For supporting BBM Level 2 for userspace mappings, we want to ensure that the smmu also supports its own version of BBM Level 2. Luckily, the smmu spec (IHI 0070G 3.21.1.3) is stricter than the aarch64 spec (DDI 0487K.a D8.16.2), so already guarantees that no aborts are raised when BBM level 2 is claimed. Add the feature and testing for it under arm_smmu_sva_supported(). Signed-off-by: Mikołaj Lenczewski <miko.lenczewski@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Link: https://lore.kernel.org/r/20250625113435.26849-4-miko.lenczewski@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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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.