Add config KVM_INTEL_EXPORTED_EPT to let kvm_intel.ko support exporting EPT to KVM external components (e.g. Intel VT-d). This config will turn on HAVE_KVM_EXPORTED_TDP and HAVE_KVM_MMU_PRESENT_HIGH automatically. HAVE_KVM_MMU_PRESENT_HIGH will make bit 11 reserved as 0. Signed-off-by: Yan Zhao <yan.y.zhao@xxxxxxxxx> --- arch/x86/kvm/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 950c12868d304..7126344077ab5 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -99,6 +99,19 @@ config X86_SGX_KVM If unsure, say N. +config KVM_INTEL_EXPORTED_EPT + bool "export EPT to be used by other modules (e.g. iommufd)" + depends on KVM_INTEL + select HAVE_KVM_EXPORTED_TDP + select HAVE_KVM_MMU_PRESENT_HIGH if X86_64 + help + Intel EPT is architecturally guaranteed of compatible to stage 2 + page tables in Intel IOMMU. + + Enable this feature to allow Intel EPT to be exported and used + directly as stage 2 page tables in Intel IOMMU. + + config KVM_AMD tristate "KVM for AMD processors support" depends on KVM && (CPU_SUP_AMD || CPU_SUP_HYGON) -- 2.17.1
