On 8/26/25 10:18 AM, Jason Gunthorpe wrote: > diff --git a/drivers/iommu/generic_pt/Kconfig b/drivers/iommu/generic_pt/Kconfig > index c35ddc7c827e92..1867e8d74b4be9 100644 > --- a/drivers/iommu/generic_pt/Kconfig > +++ b/drivers/iommu/generic_pt/Kconfig > @@ -29,4 +29,16 @@ config IOMMU_PT > IOMMU_PT provides an implementation of the page table operations > related struct iommu_domain using GENERIC_PT to abstract the page > table format. > + > +if IOMMU_PT > +config IOMMU_PT_AMDV1 > + tristate "IOMMU page table for 64 bit AMD IOMMU v1" 64-bit > + depends on !GENERIC_ATOMIC64 # for cmpxchg64 > + help > + iommu_domain implementation for the AMD v1 page table. AMDv1 is the > + "host" page table. It supports granular page sizes of almost every > + power of 2 and decodes an full 64 bit IOVA space. 64-bit > + > + Selected automatically by an IOMMU driver that uses this format. > +endif -- ~Randy
