On Mon, Aug 15, 2022 at 04:01:01PM -0700, David Matlack wrote: > Patch 1 deletes the module parameter tdp_mmu and forces KVM to always > use the TDP MMU when TDP hardware support is enabled. The rest of the > patches are related cleanups that follow (although the kvm_faultin_pfn() > cleanups at the end are only tangentially related at best). > > The TDP MMU was introduced in 5.10 and has been enabled by default since > 5.15. At this point there are no known functionality gaps between the > TDP MMU and the shadow MMU, and the TDP MMU uses less memory and scales > better with the number of vCPUs. In other words, there is no good reason > to disable the TDP MMU. Then how are you going to test the shadow mmu code -- which I assume is still relevant for the platforms that don't have this hardware support you speak of?
