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5db127a534
Except for VP8 probability coefficients buffer, all other buffers are never accessed by CPU. That allows us to mark them with DMA_ATTR_NO_KERNEL_MAPPING flag. This helps with decoding big (like 4k) videos on 32-bit ARM platforms where default vmalloc size is relatively small - 240 MiB. Since auxiliary buffer are not yet efficiently allocated, this can be easily exceeded. Even if allocation is optimized, 4k videos will still often exceed this limit. Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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.