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
