Re: [PATCH 1/3] x86/MCE/AMD, EDAC/mce_amd: Add new SMCA bank types.

From: Yazen Ghannam
Date: Tue May 25 2021 - 16:03:52 EST

On Tue, May 25, 2021 at 08:02:44PM +0200, Borislav Petkov wrote:
> On Mon, May 24, 2021 at 04:41:25PM +0000, Chatradhi, Naveen Krishna wrote:
> > [naveenk:] There is a possibility for a heterogenous system with both
> > the SMCA_UMC and SMCA_UMC_V2 variant of controllers to exist.
> Wait, what? You can have systems with *both* UMCs in the same coherent
> fabric and thus the OS can see UMCs of both types on the same system?

Yep, that's right. The UMCs are the only case of this so far and in the
foreseeable future. Though we may be moving towards more cases like