Re: [PATCH v3] x86/mce: Do not treat cache hierarchy errors as memory errors

[Adrian Schlegel]

On Mon Oct 19, 2026 at 5:32 PM CEST, Yazen Ghannam wrote:
> The SDM also mentions "Extended Memory Errors". I guess these were left
> out before, but should they be included?

I don't think so, since from what I can tell from the Intel SDM (Memory
Controller and Extended Memory Errors), extended memory errors use the
same encoding as normal memory errors, but report errors in memory that
is used as a cache, similar to what cache hierarchy errors do.

I also found this thread, where Tony made the same point:
https://lore.kernel.org/all/SJ1PR11MB60831E048B544C83E845D907FC8DA@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Best,
Adrian