kvm_phys_size
#define kvm_phys_mask(mmu) (kvm_phys_size(mmu) - _AC(1, ULL))
VM_BUG_ON(ipa >= kvm_phys_size(vcpu->arch.hw_mmu));
if ((new->base_gfn + new->npages) > (kvm_phys_size(&kvm->arch.mmu) >> PAGE_SHIFT))
kvm_stage2_wp_range(mmu, 0, kvm_phys_size(mmu));
kvm_stage2_unmap_range(mmu, 0, kvm_phys_size(mmu), may_block);
kvm_stage2_flush_range(mmu, 0, kvm_phys_size(mmu));
kvm_stage2_unmap_range(mmu, 0, kvm_phys_size(mmu), true);
(addr + size) > kvm_phys_size(&kvm->arch.mmu))