[Pkg-xen-devel] Bug#810964: [Xen-devel] [BUG] EDAC infomation partially missing

[Jan Beulich]

>>> On 22.01.16 at 10:09, <pgadmin at pse-consulting.de> 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.

Jan