pmd_index
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
static inline unsigned long pmd_index(unsigned long address)
#define pmd_index pmd_index
static u64 pmd_index(struct kvm_vm *vm, gva_t gva)