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A gap was recently discovered where if an application did not invalidate all of the stream keys (intentionally or not), and the driver did a full PXP global teardown on the GT subsystem, we find that future session creation would fail on the security firmware's side of the equation. i915 is the entity that needs ensure the sessions' state across both iGT and security firmware are at a known clean point when performing a full global teardown. Architecturally speaking, i915 should inspect all active sessions and submit the invalidate-stream-key PXP command to the security firmware for each of them. However, for the upstream i915 driver we only support the arbitration session that can be created so that will be the only session we will cleanup. Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Juston Li <justonli@chromium.org> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230125082637.118970-5-alan.previn.teres.alexis@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 | ||
| .cocciconfig | ||
| .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 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.