x86/fred: Add a fred= cmdline param

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Let command line option "fred" accept multiple options to make it
easier to tweak its behavior.

Currently, two options 'on' and 'off' are allowed, and the default
behavior is to disable FRED. To enable FRED, append "fred=on" to the
kernel command line.

  [ bp: Use cpu_feature_enabled(), touch ups. ]

Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Shan Kang <shan.kang@intel.com>
Link: https://lore.kernel.org/r/20231205105030.8698-9-xin3.li@intel.com

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Xin Li 2023-12-05 02:49:57 -08:00 • committed by Borislav Petkov (AMD)

parent e554a8ca49

commit 3810da1271

2 changed files with 32 additions and 0 deletions

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6

Documentation/admin-guide/kernel-parameters.txt

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26

arch/x86/kernel/traps.c

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