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493f30cd08
Logical Context is actually a big batch buffer consisting of multiple LRI commands + saved registers. It comprises Ring Context (the first 0x50 dwords) and Engine Context. The registers defined in Engine Context are command accessible, and safe to execute in VM Context. However, not all of them are currently tracked in existing register whitelist. Here we kick hardware to generate a dummy Engine Context and then scan the dummy Engine context to update whitelist dynamically. Based on updated list, later patches will audit future VM Engine Contexts to disallow undesired LRIs (if out of what hardware generates). Cc: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Wang Zhi <zhi.a.wang@intel.com> Signed-off-by: Yan Zhao <yan.y.zhao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20201223034430.16934-1-yan.y.zhao@intel.com Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> |
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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 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.