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b9274387bc
Don't move DMABuf attachments for PCIe P2P mappings to the SYSTEM domain when unmapping. This avoids triggering eviction fences unnecessarily. Instead do the move to SYSTEM and back to GTT when mapping these attachments to ensure the SG table gets updated after evictions. This may still trigger unnecessary evictions if user mode unmaps and remaps the same BO. However, this is unlikely in real applications. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Eric Huang <jinhuieric.huang@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 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.