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Full GPU reset causes GuC to be reset. This means that every time we're doing a reset, we need to talk to GuC and tell it about doorbells. Let's separate the communication part (create_doorbell) from our internal bookkeeping (reserve_doorbell) so that we can cleanly separate the initialization done at module load from reinitialization done at reset in the following patch. While I'm here, let's also add a proper (although slightly asymetric) cleanup that doesn't try to communicate with GuC after it's already gone, getting rid of "expected" warnings caused by GuC action failures on module unload. Note that I've also removed one of the tests (bitmap out of sync), since it doesn't make much sense anymore - bitmaps are now not expected to change during the lifetime of a client. Signed-off-by: Michał Winiarski <michal.winiarski@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Reviewed-by: Michel Thierry <michel.thierry@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20171213221352.7173-5-michal.winiarski@intel.com |
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README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.