[v3,1/2] nfit, mce: only handle uncorrectable machine checks

[Jeff Moyer <jmoyer@redhat.com>]

Borislav Petkov <bp@alien8.de> writes:

> Drop stable@
>
> On Wed, Feb 20, 2019 at 01:59:15PM -0500, Jeff Moyer wrote:
>> Sorry for necroposting.  I thought the point of the CEC was to make sure
>> that the other registered decoders only ever saw uncorrected errors.
>
> Ha, good point! You mean drivers/ras/cec.c, right?

Yes.

> If so, then I don't think we've ever talked about connecting CEC with
> NVDIMM and whether that would make sense. Lemme add Dan.

I don't think there's a difference between MCEs for NVDIMMs and normal
DRAM.  I'll let Dan confirm or deny that.

>> How do we end up getting called with a correctable error?
>
> Good question. We shouldn't.
>
> So we need to figure out here how exactly should those things interact
> and whether NFIT should get all errors reported or it should put all the
> correctable errors through the decay thing, see the comment at the top
> of drivers/ras/cec.c
>
> Thx for pointing that out Jeff.

Sure, thanks for the quick reply, Boris!  Also, thanks for your detailed
commit messages.  They really help with understanding the code changes.

Cheers,
Jeff