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Ard Biesheuvel
11e5ea5242
Currently, we rely on the fact that exceptions can be trivially classified by applying a mask/value pair to the syndrome value reported via the ESR register, but this will no longer be true once we enable support for 5 level paging. So introduce a couple of helpers that encapsulate this mask/value pair matching, and wire them up in the code. No functional change intended, the actual handling of translation level -1 will be added in a subsequent patch. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Oliver Upton <oliver.upton@linux.dev> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> [maz: folded in changes suggested by Mark] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20231128140400.3132145-2-ardb@google.com
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.