PUD_MASKED_BITS   998 arch/powerpc/include/asm/book3s/64/pgtable.h #define pud_page_vaddr(pud)	__va(pud_val(pud) & ~PUD_MASKED_BITS)
PUD_MASKED_BITS   164 arch/powerpc/include/asm/nohash/64/pgtable.h #define pud_page_vaddr(pud)	(pud_val(pud) & ~PUD_MASKED_BITS)