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b2dba064c9
Define macro AMDGPU_MAX_SG_SEGMENT_SIZE 2GB, because struct scatterlist length is unsigned int, and some users of it cast to a signed int, so every segment of sg table is limited to size 2GB maximum. For contiguous VRAM allocation, don't limit the max buddy block size in order to get contiguous VRAM memory. To workaround the sg table segment size limit, allocate multiple segments if contiguous size is bigger than AMDGPU_MAX_SG_SEGMENT_SIZE. Signed-off-by: Philip Yang <Philip.Yang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.