37efea9ca2
Allow xe_device_get_gt() and for_each_gt() to operate as expected on platforms with standalone media. FIXME: We need to figure out a consistent ID scheme for GTs. This patch keeps the pre-existing behavior of 0/1 being the GT IDs for both PVC (multi-tile) and MTL (multi-GT), but depending on the direction we decide to go with uapi, we may change this in the future (e.g., to return 0/1 on PVC and 0/2 on MTL). Or if we decide we only need to expose tiles to userspace and not GTs, we may not even need ID numbers for the GTs anymore. v2: - Restructure a bit to make the assertions more clear. - Clarify in commit message that the goal here is to preserve existing behavior; UAPI-visible changes may be introduced in the future once we settle on what we really want. v3: - Store total GT count in xe_device for ease of lookup. (Brian) - s/(id__++)/(id__)++/ (Gustavo) Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Gustavo Sousa <gustavo.sousa@intel.com> Cc: Brian Welty <brian.welty@intel.com> Acked-by: Gustavo Sousa <gustavo.sousa@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Link: https://lore.kernel.org/r/20230601215244.678611-29-matthew.d.roper@intel.com Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@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.