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H A Dcec.cdiff d25c6948a6aad787d9fd64de6b5362c3f23cc8d0 Tue Aug 02 11:18:47 CDT 2022 Tony Luck <tony.luck@intel.com> RAS/CEC: Reduce offline page threshold for Intel systems

A large scale study of memory errors on Intel systems in data centers
showed that aggressively taking pages with corrected errors offline is
the best strategy of using corrected errors as a predictor of future
uncorrected errors.

Set the threshold to "2" on Intel systems. AMD guidance is that this is
not necessary for their systems.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Link: https://lore.kernel.org/r/20220607212015.175591-1-tony.luck@intel.com
Link: https://lore.kernel.org/r/YulOZ/Eso0bwUcC4@agluck-desk3.sc.intel.com