On Mon, Dec 04, 2023 at 02:34:10PM -0400, Jason Gunthorpe wrote: > On Sat, Dec 02, 2023 at 05:22:16PM +0800, Yan Zhao wrote: > > +config IOMMUFD_KVM_HWPT > > + bool "Supports KVM managed HW page tables" > > + default n > > + help > > + Selecting this option will allow IOMMUFD to create IOMMU stage 2 > > + page tables whose paging structure and mappings are managed by > > + KVM MMU. IOMMUFD serves as proxy between KVM and IOMMU driver to > > + allow IOMMU driver to get paging structure meta data and cache > > + invalidate notifications from KVM. > > I'm not sure we need a user selectable kconfig for this.. > > Just turn it on if we have kvm turned on an iommu driver implements it > Got it, thanks!
