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[ Upstream commit8d474deaba] When non-secure priorities are used, compared to the raw priority set, the value read back from RPR is also right-shifted by one and the highest bit set. Add a macro to do the modifications to the raw priority when doing the comparison against the RPR value. This corrects the pseudo-NMI behavior when non-secure priorities in the GIC are used. Tested on 5.10 with the "IPI as pseudo-NMI" series [1] applied on MT8195. [1] https://lore.kernel.org/linux-arm-kernel/1604317487-14543-1-git-send-email-sumit.garg@linaro.org/ Fixes:3367805909("irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0") Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> [maz: Added comment contributed by Alex] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210811171505.1502090-1-wenst@chromium.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.