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A queue must be in the submission backend's tracking state before the LRC is created to avoid a race condition where the LRC's GGTT addresses are not properly fixed up during VF post-migration recovery. Move the queue initialization—which adds the queue to the submission backend's tracking state—before LRC creation. Also wait on pending GGTT fixups before allocating LRCs to avoid racing with fixups. v2: - Wait on VF GGTT fixes before creating LRC (testing) v5: - Adjust comment in code (Tomasz) - Reduce race window v7: - Only wakeup waiters in recovery path (CI) - Wakeup waiters on abort - Use GT warn on (Michal) - Fix kernel doc for LRC ring size function (Tomasz) v8: - Guard against migration not supported or no memirq (CI) Signed-off-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Tomasz Lis <tomasz.lis@intel.com> Link: https://lore.kernel.org/r/20251008214532.3442967-28-matthew.brost@intel.com |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.