Help¶

Any BDF with a bus ID smaller than or equal to this limit is mapped to the IOMMU domain of the first VM.

Defaults¶

0xf if PLATFORM_SBL
0xff if PLATFORM_UEFI

Kconfig definition¶

At arch/x86/Kconfig:302

Included via Kconfig:3

Menu path: (top menu)

config IOMMU_INIT_BUS_LIMIT
    hex
    prompt "Limit of PCI bus on IOMMU initialization"
    default 0xf if PLATFORM_SBL
    default 0xff if PLATFORM_UEFI
    help
      Any BDF with a bus ID smaller than or equal to this limit is mapped to
      the IOMMU domain of the first VM.

(Definitions include propagated dependencies, including from if’s and menus.)