RE: [PATCH 2/2] x86/mce: Add mce=panic_on_ce_count to panic on a corrected error flood

From: Luck, Tony

Date: Tue Aug 25 2026 - 12:26:41 EST


> Why isn't the strategy here page offlining and shutting up the source of the
> error instead of doing silly counting and not doing anything to contain the
> errors in the first place?

While Breno wasn't specific about the source of the errors in these messages, I'm
guessing that they might be coming from cache errors rather than DDR memory.

There isn't a good way for software[1] to suppress these errors. Taking memory
pages offline when the problem is the cache will just deplete available memory
without solving the problem.

-Tony

[1] I'll be posting something later today that adds a driver to help with a hardware
solution to correctable cache errors.