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f80ea85669
There's an errata[1], for the Disable WQ command that it does not guaranteee that address translations are drained. If WQ configuration is updated, pending address translations can use an updated WQ configuration, resulting an invalid translation response that is cached in the device translation cache. Replace the Disable WQ command with a Drain WQ command followed by a Reset WQ command, this guarantees that all ATS translations are drained from the device before changing WQ configuration. [1] https://cdrdv2.intel.com/v1/dl/getcontent/843306 ("Intel DSA May Cause Invalid Translation Caching") Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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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.