03ca4589fa
Disallow loading KVM SVM if 5-level paging is supported. In theory, NPT for L1 should simply work, but there unknowns with respect to how the guest's MAXPHYADDR will be handled by hardware. Nested NPT is more problematic, as running an L1 VMM that is using 2-level page tables requires stacking single-entry PDP and PML4 tables in KVM's NPT for L2, as there are no equivalent entries in L1's NPT to shadow. Barring hardware magic, for 5-level paging, KVM would need stack another layer to handle PML5. Opportunistically rename the lm_root pointer, which is used for the aforementioned stacking when shadowing 2-level L1 NPT, to pml4_root to call out that it's specifically for PML4. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210505204221.1934471-1-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| .. | ||
| mmu.c | ||
| mmu_audit.c | ||
| mmu_internal.h | ||
| mmutrace.h | ||
| page_track.c | ||
| paging_tmpl.h | ||
| spte.c | ||
| spte.h | ||
| tdp_iter.c | ||
| tdp_iter.h | ||
| tdp_mmu.c | ||
| tdp_mmu.h | ||