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b861de2469
Initial version of guest backed objects in the host had some performance issues that made using surface-dma's instead of direct copies faster. Surface dma's force a migration to vram which at best is slow and at worst is impossible (e.g. on svga3 where there's not enough vram to migrate fb's to it). Slowly migrate away from surface dma's to direct copies by limiting their usage to systems with more than 32MB of vram. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com> Reviewed-by: Martin Krastev <krastevm@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220302152426.885214-9-zack@kde.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.