6d46d09a0d
Instead of waiting until the interrupt reaches GuC, we can grab a forcewake while triggering the H2G interrupt. GEN11_GUC_HOST_INTERRUPT is inside sgunit and is not affected by forcewakes. However, there could be some delays when platform is entering/exiting some higher level platform sleep states and a H2G is triggered. A forcewake ensures those sleep states have been fully exited and further processing occurs as expected. The hysteresis timers for C6 and higher sleep states will ensure there is no unwanted race between the wake and processing of the interrupts by GuC. This will have an official WA soon so adding a FIXME in the comments. v2: Make the new ranges watertight to address BAT failures and update commit message (Matt R). Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com> Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240119193513.221730-1-vinay.belgaumkar@intel.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.