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d4550f58c7
VMA pinning to GGTT is now commited asynchronously in CHV / BXT+VDT
environments to avoid lock inversion among reservation_ww and cpu_hotplug
locks, the latter acquired from stop_machine(). Then,
vma->resource->page_sizes_gtt the test uses as shift count may still be
not populated (equal 0) after i915_vma_pin() returns. Wait for VMA bind
completion in those cases to avoid shift-out-of-bounds kernel warnings and
the test case failing with -EBADSLT.
v2: Explain why VMA pinning is commited asynchronously on CHV/BXT+VTD
(Krzysztof),
- use more precise wording in commit description.
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com>
Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com>
Acked-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://lore.kernel.org/r/20251023082925.351307-8-janusz.krzysztofik@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 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.