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4fa7d880ae
The SRSO bug can theoretically be used to conduct user->user or guest->guest attacks and requires a mitigation (namely IBPB instead of SBPB on context switch) for these. So mark SRSO as being applicable to the user->user and guest->guest attack vectors. Additionally, SRSO supports multiple mitigations which mitigate different potential attack vectors. Some CPUs are also immune to SRSO from certain attack vectors (like user->kernel). Use the specific attack vectors requiring mitigation to select the best SRSO mitigation to avoid unnecessary performance hits. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250721160310.1804203-1-david.kaplan@amd.com |
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| 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.