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dd39212b5f
The balloon nodes, which are used to fill areas of GGTT inaccessible for a specific VF, were allocated and inserted into GGTT within one function. To be able to re-use that insertion code during VF migration recovery, we need to split it. This patch separates allocation (init/fini functs) from the insertion of balloons (balloon/deballoon functs). Locks are also moved to ensure calls from post-migration recovery worker will not cause a deadlock. v2: Moved declarations to proper header v3: Rephrased description, introduced "_locked" versions of some functs, more lockdep checks, some functions renamed, altered error handling, added missing kerneldocs. v4: Suffixed more functs with `_locked`, moved lockdep asserts, fixed finalization in error path, added asserts v5: Renamed another few functs, used xe_ggtt_node_allocated(), moved lockdep back again to avoid null dereference, added asserts, improved comments v6: Changed params of cleanup_ggtt() Signed-off-by: Tomasz Lis <tomasz.lis@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://lore.kernel.org/r/20250512114018.361843-2-tomasz.lis@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.