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When using a separate VRAM region for kernel allocations, some kernel structures, such as context userspace data, should not reside in the VRAM region dedicated to the kernel. The VRAM kernel region is intended only for allocations necessary for driver operation. Allocations created via ioctl are long-lived and not easily evictable. If this region runs out of space, there may not be a fallback, which could cause failures. To prevent this, add a new BO flag that explicitly forces the BO to be allocated in the general-purpose VRAM region accessible to userspace, avoiding the kernel-only VRAM region. v2: - update commit message (Matthew) Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://lore.kernel.org/r/20251003162619.1984236-3-piotr.piorkowski@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 reStructuredText 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.