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Fri, 28 Aug 2020 15:47:08 +0000 From: "Deucher, Alexander" To: "jroedel@suse.de" CC: "Kuehling, Felix" , Joerg Roedel , "iommu@lists.linux-foundation.org" , "Huang, Ray" , "Koenig, Christian" , "Lendacky, Thomas" , "Suthikulpanit, Suravee" , "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 Thread-Index: AQHWegTrKFaLvteaIU+zNTDEWFvNM6lKcXK8gAATzoCAAABa0IADCauAgAACVICAABPWsIAABqKAgAAEcBA= Date: Fri, 28 Aug 2020 15:47:07 +0000 Message-ID: References: <20200824105415.21000-1-joro@8bytes.org> <34db343f-cd23-09af-3bc5-29b9d385f85d@amd.com> <20200828134639.GW3354@suse.de> <60067932-dbf4-d67b-cf11-4dd2b016ed63@amd.com> <20200828152943.GY3354@suse.de> In-Reply-To: <20200828152943.GY3354@suse.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_0d814d60-469d-470c-8cb0-58434e2bf457_Enabled=true; MSIP_Label_0d814d60-469d-470c-8cb0-58434e2bf457_SetDate=2020-08-28T15:46:12Z; 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Joerg Roedel > ; iommu@lists.linux-foundation.org; Huang, Ray > ; Koenig, Christian ; > Lendacky, Thomas ; Suthikulpanit, Suravee > ; linux-kernel@vger.kernel.org > Subject: Re: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is > active >=20 > On Fri, Aug 28, 2020 at 03:11:32PM +0000, Deucher, Alexander wrote: > > There are hw bugs on Raven and probably Carrizo/Stoney where they need > > 1:1 mapping to avoid bugs in some corner cases with the displays. > > Other GPUs should be fine. The VIDs is 0x1002 and the DIDs are 0x15dd > > and 0x15d8 for raven variants and 0x9870, 0x9874, 0x9875, 0x9876, > > 0x9877 and 0x98e4 for carrizo and stoney. As long as we preserve the > > 1:1 mapping for those asics, we should be fine. >=20 > Okay, Stoney at least has no Zen-based CPU, so no support for memory > encryption anyway. How about Raven, is it paired with a Zen CPU? Ah, right, So CZ and ST are not an issue. Raven is paired with Zen based = CPUs. Thanks, Alex