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

[Yazen Ghannam]

On Mon, Oct 19, 2026 at 08:34:06PM +0200, Adrian Schlegel wrote:
> 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/
> 

Ah okay, makes sense.

Reviewed-by: Yazen Ghannam <yazen.ghannam@xxxxxxx>

Thanks,
Yazen