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SubjectRe: EDAC-AMD64: what is the ecc_msg good for ?
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On 11.01.2018 00:45, Borislav Petkov wrote:
> On Thu, Jan 11, 2018 at 12:31:08AM +0100, Gabriel C wrote:
>> Beacuse we see the following:
>>
>> [ 4.694948] EDAC amd64: Node 6: DRAM ECC disabled.
>> [ 4.694949] EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load.
>> Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
>> (Note that use of the override may cause unknown side effects.)
>>
>> The first one tells the Node is disabled
>
> The first one says *DRAM ECC* is disabled on that node - not the node
> itself. Looks like it confuses you too.

Yes ofc :) is what I meant :)

>
>> the second is a
>> KERN INFO message telling the *module* will not load.
>>
>> Telling then *module* will not load for 'this Node' should be clear for everone.
>
> So this is a purely informational message. There's a lot of messages
> like that in the kernel. I still don't understand what your problem is
> with this particular one.

Nothing agains messages but I get this one twice for each node is disabled
with a INFO I partially don't even need on that platform.

>
>> Don't get me wrong for me is clear what this means , I don't need the
>> second message at all but I have here folks didn't understand wth that means.
>
> "ECC disabled in the BIOS or no ECC capability, module will not load." -
> I think that sentence is explaining the situation pretty good:
>
> either ECC checking is disabled in the BIOS
>
> or
>
> ECC capability cannot be detected.
>
> What do you think it should say instead?

The message is fine if you add a Node prefix on it and let the
that ecc_enable_override stuff out.

something like this looks better and less confusing , don't you think ?

EDAC amd64: Node 4: DRAM ECC disabled.
EDAC amd64: Node 4: DDRM ECC disabled in the BIOS or no ECC capability, module will not load.
EDAC amd64: Node 5: DRAM ECC enabled.
EDAC amd64: F17h detected (node 5).
EDAC MC: UMC0 chip selects:
....



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