KVM_HPAGE_GFN_SHIFT 73 arch/x86/include/asm/kvm_host.h #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x)) KVM_HPAGE_GFN_SHIFT 81 arch/x86/include/asm/kvm_host.h return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - KVM_HPAGE_GFN_SHIFT 82 arch/x86/include/asm/kvm_host.h (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));