Philip Yang 75dda67c72 drm/amdkfd: Flush TLB after unmapping for GFX v9.4.3
kfd_flush_tlb_after_unmap should return true for GFX v9.4.3, to do TLB
heavyweight flush after unmapping from GPU to guarantee that the GPU
will not access pages after they have been unmapped. This also helps
improve the mapping to GPU performance.

Without this, KFD accidently flush TLB after mapping to GPU because the
vm update sequence number is increased by previous unmapping.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-06-09 09:55:47 -04:00
2022-09-28 09:02:20 +02:00
2023-03-26 14:40:20 -07:00

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.
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