| Date | Wed, 19 Oct 2022 12:34:15 +0530 | Subject | Re: [PATCHv10 10/15] x86/mm, iommu/sva: Make LAM and SVM mutually exclusive | From | Vasant Hegde <> |
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Hi Kirill,
On 10/18/2022 5:03 PM, Kirill A. Shutemov wrote: > IOMMU and SVM-capable devices know nothing about LAM and only expect > canonical addresses. Attempt to pass down tagged pointer will lead to > address translation failure. > > By default do not allow to enable both LAM and use SVM in the same > process. > > The new ARCH_FORCE_TAGGED_SVM arch_prctl() overrides the limitation.
Better s/SVM/SVA/ ? So that its consistent with IOMMU usage.
-Vasant
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