[AMD Official Use Only - Internal Distribution Only]

> -----Original Message-----
> From: Joerg Roedel <joro@8bytes.org>
> Sent: Friday, September 4, 2020 6:06 AM
> To: Deucher, Alexander <Alexander.Deucher@amd.com>
> Cc: jroedel@suse.de; Kuehling, Felix <Felix.Kuehling@amd.com>;
> iommu@lists.linux-foundation.org; Huang, Ray <Ray.Huang@amd.com>;
> Koenig, Christian <Christian.Koenig@amd.com>; Lendacky, Thomas
> <Thomas.Lendacky@amd.com>; Suthikulpanit, Suravee
> <Suravee.Suthikulpanit@amd.com>; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is
> active
>
> On Fri, Aug 28, 2020 at 03:47:07PM +0000, Deucher, Alexander wrote:
> > Ah, right,  So CZ and ST are not an issue.  Raven is paired with Zen based
> CPUs.
>
> Okay, so for the Raven case, can you add code to the amdgpu driver which
> makes it fail to initialize on Raven when SME is active? There is a global
> checking function for that, so that shouldn't be hard to do.
>

Sure.  How about the attached patch?

Alex