On Tue, Jul 19, 2022, Sean Christopherson wrote: > On Sat, May 21, 2022, Lai Jiangshan wrote: > Actually, I think the series is buggy. That patch, which precedes this one, does > > if (vcpu->arch.mmu->root_role.level != PT32E_ROOT_LEVEL) > return 0; > > i.e. does NOT allocate pae_root for a 64-bit host, which means that running KVM > against the on-demand patch would result in the WARN firing and bad things happening. Gah, I take that back, pae_root is allocated by mmu_alloc_special_roots().
