SBP_L1_BITS 681 arch/powerpc/include/asm/book3s/64/mmu-hash.h #define SBP_L1_COUNT (1 << SBP_L1_BITS) SBP_L1_BITS 683 arch/powerpc/include/asm/book3s/64/mmu-hash.h #define SBP_L2_SHIFT (PAGE_SHIFT + SBP_L1_BITS)