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From:   "Deucher, Alexander" <Alexander.Deucher@amd.com>
To:     Joerg Roedel <joro@8bytes.org>
CC:     "jroedel@suse.de" <jroedel@suse.de>,
        "Kuehling, Felix" <Felix.Kuehling@amd.com>,
        "iommu@lists.linux-foundation.org" <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" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is active
Thread-Topic: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is active
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Date:   Sun, 6 Sep 2020 16:08:58 +0000
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--_002_MN2PR12MB448843EC6D3D5B71613BEAAFF72B0MN2PR12MB4488namp_
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[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 ba=
sed
> 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 globa=
l
> checking function for that, so that shouldn't be hard to do.
>

Sure.  How about the attached patch?

Alex


--_002_MN2PR12MB448843EC6D3D5B71613BEAAFF72B0MN2PR12MB4488namp_
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