Re: [PATCH v4 12/15] iommupt: Add the x86 64 bit page table format

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 57dc81060f9f0d..8665a1d4299b7a 100644 --- a/drivers/iommu/generic_pt/Kconfig +++ b/drivers/iommu/generic_pt/Kconfig @@ -41,10 +41,21 @@ config IOMMU_PT_AMDV1 Selected automatically by an IOMMU driver that uses this format. +config IOMMU_PT_X86_64

•   tristate "IOMMU page table for x86 64 bit, 4/5 levels"
  

64-bit, and use tab to indent, not spaces.

• depends on !GENERIC_ATOMIC64 # for cmpxchg64
• help

•  iommu_domain implementation for the x86 64 bit 4/5 level page table.
  

64-bit

•  It supports 4K/2M/1G page sizes and can decode a sign extended
  

sign-extended

•  portion of the 64 bit IOVA space.
  

64-bit

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