pmd_low           165 arch/x86/include/asm/pgtable-3level.h 		u32 pmd_low;
pmd_low           177 arch/x86/include/asm/pgtable-3level.h 	res.pmd_low = xchg(&orig->pmd_low, 0);
pmd_low           207 arch/x86/include/asm/pgtable-3level.h 		old.pmd_low = xchg(&ptr->pmd_low, new.pmd_low);