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A mirror of the official Linux kernel repository just in case
177b621bf0
There is a use case during early boot with an secure key encrypted root file system where the paes cipher may try to derive a protected key from secure key while the AP bus is still in the process of scanning the bus and building up the zcrypt device drivers. As the detection of CEX cards also triggers the modprobe of the pkey handler modules, these modules may come into existence too late. Yet another use case happening during early boot is for use of an protected key encrypted swap file(system). There is an ephemeral protected key read via sysfs to set up the swap file. But this only works when the pkey_pckmo module is already in - which may happen at a later time as the load is triggered via CPU feature. This patch introduces a new function pkey_handler_request_modules() and invokes it which unconditional tries to load in the pkey handler modules. This function is called for the in-kernel API to derive a protected key from whatever and in the sysfs API when the first attempt to simple invoke the handler function failed. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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| arch | ||
| block | ||
| 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 | ||
| .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.