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Program different ranges in each XCC with MEC_DOORBELL_RANGE_LOWER/HIGHER. Keeping the same range causes CPF in other XCCs also to be busy when an IB packet is submitted to KCQ. Only the XCC which processes the packet comes back to idle afterwards and this causes other CPs not be idle. This in turn affects clockgating behavior as RLC doesn't get idle interrupt. LOWER/HIGHER covers only KIQ/KCQs which are per XCC queues. Assigning different ranges doesn't seem to have any side effect as user queue ranges are outside of this range. User queue tests - PM4 through KFD and AQL through rocr - have the same results after this change. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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.