fef53be028
On some platforms the hw has dropped support for 4K GTT pages when dealing with LMEM, and due to the design of 64K GTT pages in the hw, we can only mark the *entire* page-table as operating in 64K GTT mode, since the enable bit is still on the pde, and not the pte. And since we we still need to allow 4K GTT pages for SMEM objects, we can't have a "normal" 4K page-table with scratch pointing to LMEM, since that's undefined from the hw pov. The simplest solution is to just move the 64K scratch page to SMEM on such platforms and call it a day, since that should work for all configurations. Signed-off-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211208141613.7251-4-ramalingam.c@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.