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We currently assume that an exception is delivered to EL1, always. Once we emulate EL2, this no longer will be the case. To prepare for this, add a target_mode parameter. While we're at it, merge the computing of the target PC and PSTATE in a single function that updates both PC and CPSR after saving their previous values in the corresponding ELR/SPSR. This ensures that they are updated in the correct order (a pretty common source of bugs...). Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <maz@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.