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cfffcf9799
Set the CR4.MCE bit as the last step during init. This brings the MCA init order closer to what is described in the x86 docs. x86 docs: AMD Intel MCG_CTL MCA_CONFIG MCG_EXT_CTL MCi_CTL MCi_CTL MCG_CTL CR4.MCE CR4.MCE Current Linux: AMD Intel CR4.MCE CR4.MCE MCG_CTL MCG_CTL MCA_CONFIG MCG_EXT_CTL MCi_CTL MCi_CTL Updated Linux: AMD Intel MCG_CTL MCG_CTL MCA_CONFIG MCG_EXT_CTL MCi_CTL MCi_CTL CR4.MCE CR4.MCE The new init flow will match Intel's docs, but there will still be a mismatch for AMD regarding MCG_CTL. However, there is no known issue with this ordering, so leave it for now. Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Nikolay Borisov <nik.borisov@suse.com> Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com |
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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.