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Ville Syrjälä
f1ee98cff3
The "io" address of an object is its dma address minus the region.start. Subtract the latter to make smem_start correct. The current code happens to work for genuine LMEM objects as LMEM region.start==0, but for LMEMBAR stolen objects region.start!=0. TODO: perhaps just set smem_start=0 always as our .fb_mmap() implementation no longer depends on it? Need to double check it's not needed for anything else... Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Tested-by: Paz Zcharya <pazz@chromium.org> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240202224340.30647-14-ville.syrjala@linux.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.