I found this while testing the permission_fault patch with ept=0.
Paolo Bonzini (2):
KVM: MMU: fix ept=0/pte.u=0/pte.w=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0
combo
KVM: MMU: fix reserved bit check for
pte.u=0/pte.w=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0Documentation/virtual/kvm/mmu.txt | 3 ++- arch/x86/kvm/mmu.c | 4 +++- arch/x86/kvm/vmx.c | 25 +++++++++++++++---------- 3 files changed, 20 insertions(+), 12 deletions(-) -- 1.8.3.1

