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0e3b70aa13
Document a flaw in KVM's ABI which lets userspace attempt to inject a "bad" hardware exception event, and thus induce VM-Fail on Intel CPUs. Fixing the flaw is a fool's errand, as AMD doesn't sanity check the validity of the error code, Intel CPUs that support CET relax the check for Protected Mode, userspace can change the mode after queueing an exception, KVM ignores the error code when emulating Real Mode exceptions, and so on and so forth. The VM-Fail itself doesn't harm KVM or the kernel beyond triggering a ratelimited pr_warn(), so just document the oddity. Link: https://lore.kernel.org/r/20240802200420.330769-1-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.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.