HPTEG_HASH_BITS_PTE   72 arch/powerpc/include/asm/kvm_host.h #define HPTEG_HASH_NUM_PTE		(1 << HPTEG_HASH_BITS_PTE)
HPTEG_HASH_BITS_PTE   28 arch/powerpc/kvm/book3s_mmu_hpte.c 	return hash_64(eaddr >> PTE_SIZE, HPTEG_HASH_BITS_PTE);