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The double-buffered cursor image is currently stored in video memory by creating two BOs and pinning them to VRAM. The exact location is chosen by VRAM helpers. The pinned cursor BOs can conflict with framebuffer BOs and prevent the primary plane from displaying its framebuffer. As a first step to solving this problem, we reserve dedicated space at the high end of the video memory for the cursor images. As the amount of video memory now differs from the amount of available framebuffer memory, size tests are adapted accordingly. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190927091301.10574-7-tzimmermann@suse.de
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.