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Buffer based command transport can replace MMIO based mechanism. It may be used to perform host-2-guc and guc-to-host communication. Portions of this patch are based on work by: Michel Thierry <michel.thierry@intel.com> Robert Beckett <robert.beckett@intel.com> Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> v2: use gem_object_pin_map (Chris) don't use DEBUG_RATELIMITED (Chris) don't track action stats (Chris) simplify next fence (Chris) use READ_ONCE (Chris) move blob allocation to new function (Chris) v3: use static owner id (Daniele) v4: but keep channel initialization generic (Daniele) and introduce owner_sub_id (Daniele) Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170526111326.87280-3-michal.wajdeczko@intel.com
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.