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fd84041d09
We currently have a race between bind engines which can result in corrupted page tables leading to faults. A simple example: bind A 0x0000-0x1000, engine A, has unsatisfied in-fence bind B 0x1000-0x2000, engine B, no in-fences exec A uses 0x1000-0x2000 Bind B will pass bind A and exec A will fault. This occurs as bind A programs the root of the page table in a bind job which is held up by an in-fence. Bind B in this case just programs a leaf entry of the structure. To fix use range-fence utility to track cross bind engine conflicts. In the above example bind A would insert an dependency into the range-fence tree with a key of 0x0-0x7fffffffff, bind B would find that dependency and its bind job would scheduled behind the unsatisfied in-fence and bind A's job. Reviewed-by: Maarten Lankhorst<maarten.lankhorst@linux.intel.com> Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@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.