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Pavel Ondračka
ec26f6cdcc
commitf896e86273upstream. r100_copy_blit() copies BOs as 1024-pixel-wide ARGB8888 blits, so one GPU page becomes one blit row. Large copies are split into chunks of at most 8191 rows. The kernel register header names the packet coordinate dwords SRC_Y_X and DST_Y_X. In the BITBLT_MULTI description in R5xx_Acceleration_v1.5.pdf docs, these correspond to [SRC_X1 | SRC_Y1] and [DST_X1 | DST_Y1], which are signed 13-bit coordinates in the -8192..8191 range. The old code kept SRC/DST_PITCH_OFFSET at the BO base and used SRC_Y_X/DST_Y_X as the chunk address, so large BO moves could exceed that coordinate range. Compute per-chunk SRC/DST_PITCH_OFFSET bases and emit zero source and destination coordinates. r100_copy_blit() already packs SRC/DST_PITCH_OFFSET as pitch plus base offset, so large chunk addresses belong there rather than in the coordinate fields. This fixes Prison Architect corruption with 4096x4096 mipped textures after they are evicted to GTT under memory pressure on RV530. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/work_items/6716 Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit87be26aee7) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.