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AMD Zen1 and Zen2 CPUs with SMT disabled are not vulnerable to SRSO. Instead of overloading the X86_FEATURE_SRSO_NO bit to indicate this, define a separate mitigation to make the code cleaner. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: H . Peter Anvin <hpa@zytor.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20250625155805.600376-2-david.kaplan@amd.com
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.