Re: [Xen-devel] [BUG] EDAC infomation partially missing

[Andreas Pflug <pgadmin@xxxxxxxxxxxxxxxxx>]

Am 22.01.16 um 11:40 schrieb Jan Beulich:
>>>> On 22.01.16 at 10:09, <pgadmin@xxxxxxxxxxxxxxxxx> wrote:
>> When booting with Xen 4.4.1:
>>
>> AMD64 EDAC driver v3.4.0
>> EDAC amd64: DRAM ECC enabled.
>> EDAC amd64: NB MCE bank disabled, set MSR 0x0000017b[4] on node 0 to enable.
> I wonder how valid his message is. We actually write this MSR with
> all ones during boot.
>
> However, considering involved functions like
> nb_mce_bank_enabled_on_node() or node_to_amd_nb() taking
> node IDs as inputs, and considering that PV guests (including
> Dom0) don't have a topology matching that of the host, I doubt
> very much that this driver is even remotely prepared to run
> under Xen. It working on Xen 4.1.x would then be by pure
> accident.
The dmesg is identical with or without Xen4.1, so I'd guess it does work
if flags are detected correctly.

Regards
Andreas

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