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| Filename | Latest commit message | Latest commit date |
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28a5933e8d
The pnv_npu2_init_context() and pnv_npu2_destroy_context() functions
are used to allocate/free contexts to allow address translation and
shootdown by the NPU on a particular GPU. Context initialisation is
implicitly safe as it is protected by the requirement mmap_sem be held
in write mode, however pnv_npu2_destroy_context() does not require
mmap_sem to be held and it is not safe to call with a concurrent
initialisation for a different GPU.
It was assumed the driver would ensure destruction was not called
concurrently with initialisation. However the driver may be simplified
by allowing concurrent initialisation and destruction for different
GPUs. As npu context creation/destruction is not a performance
critical path and the critical section is not large a single spinlock
is used for simplicity.
Fixes:
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| README | ||
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.