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1cec203498
Add a common helper, kvm_do_msr_access(), to invoke the "leaf" APIs that
are type and access specific, and more importantly to handle errors that
are returned from the leaf APIs. I.e. turn kvm_msr_ignored_check() from a
a helper that is called on an error, into a trampoline that detects errors
*and* applies relevant side effects, e.g. logging unimplemented accesses.
Because the leaf APIs are used for guest accesses, userspace accesses, and
KVM accesses, and because KVM supports restricting access to MSRs from
userspace via filters, the error handling is subtly non-trivial. E.g. KVM
has had at least one bug escape due to making each "outer" function handle
errors. See commit
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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.