Re: [PATCH v8 04/15] iommupt: Add the AMD IOMMU v1 page table format

On 11/4/25 10:30 AM, Jason Gunthorpe wrote:

diff --git a/drivers/iommu/generic_pt/Kconfig b/drivers/iommu/generic_pt/Kconfig index a81dfdd72ca016..cbdad222923b26 100644 --- a/drivers/iommu/generic_pt/Kconfig +++ b/drivers/iommu/generic_pt/Kconfig @@ -30,4 +30,16 @@ config IOMMU_PT related to struct iommu_domain using GENERIC_PT. It provides a single implementation of the page table operations that can be shared by multiple drivers.

+if IOMMU_PT +config IOMMU_PT_AMDV1

• tristate "IOMMU page table for 64-bit AMD IOMMU v1"
• 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.
  

a full or

the full

•  Selected automatically by an IOMMU driver that uses this format.
  

+endif