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f1e6f89506
Enable feature to allow memory reads to take a priority memory path. This will reduce latency on the read path, but may introduce read after write (RAW) hazards as read and writes will no longer be ordered. To avoid RAW hazards, SW can use the MI_MEM_FENCE command or any other MI command that generates non posted memory writes. This will ensure data is coherent in memory prior to execution of commands which read data from memory. RCS,BCS and CCS support this feature. No pattern identified in KMD that could lead to a hazard. v2: Modify commit message, enable priority mem read feature for media, modify version range, modify bspec detail (Matt Roper) v3: Rebase, fix cramped line-wrapping (jcavitt) v4: Rebase v5: Media does not support Priority Mem Read. Modify commit to reflect the same. v6: Rebase Bspec: 60298, 60237, 60187, 60188 Signed-off-by: Pallavi Mishra <pallavi.mishra@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Acked-by: José Roberto de Souza <jose.souza@intel.com> Acked-by: Carl Zhang <carl.zhang@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240731195622.1868401-1-pallavi.mishra@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 reStructuredText 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.