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We expect every queue that uses PXP to be marked as doing so, to allow the driver to correctly manage the encryption status. The API for doing this from userspace is coming in the next patch, while this patch implement the management side of things. When a PXP queue is created, the driver will do the following: - Start the default PXP session if it is not already running; - assign an rpm ref to the queue to keep for its lifetime (this is required because PXP HWDRM sessions are killed by the HW suspend flow). Since PXP start and termination can race each other, this patch also introduces locking and a state machine to keep track of the pending operations. Note that since we'll need to take the lock from the suspend/resume paths as well, we can't do submissions while holding it, which means we need a slightly more complicated state machine to keep track of intermediate steps. v4: new patch in the series, split from the following interface patch to keep review manageable. Lock and status rework to not do submissions under lock. v5: Improve comments and error logs (John) Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: John Harrison <John.C.Harrison@Intel.com> Reviewed-by: John Harrison <John.C.Harrison@Intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250129174140.948829-8-daniele.ceraolospurio@intel.com |
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| certs | ||
| crypto | ||
| 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 | ||
| .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.