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cb80705549
Limit pre-skl plane stride to below 4k or 8k pixels (depending on the platform). We do this in order guarantee that TILEOFF/OFFSET.x does not get too big. Currently this is not a problem as we align SURF to 4k, and so TILEOFF/OFFSET only have to deal with a single tile's worth of pixels. But for async flips we're going to have to bump SURF alignment to 256k, and thus we can no longer guarantee TILEOFF/OFFSET.x will stay within acceptable bounds. We can avoid this by borrowing a trick from the skl+ code and limit the max plane stride to whatever value we can fit into TILEOFF/OFFSET.x. The slight downside is that we may end up doing GTT remapping in a few more cases where previously we did not have to. But since that will only happen with huge buffers I'm not really concerned about it. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210111163711.12913-3-ville.syrjala@linux.intel.com Reviewed-by: Karthik B S <karthik.b.s@intel.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.