hence 84 arch/arc/include/asm/entry-arcv2.h ; _HARD saves r10 clobbered by _SOFT as scratch hence comes first hence 224 arch/arc/include/asm/entry-arcv2.h ; _SOFT clobbers r10 restored by _HARD hence the order hence 28 arch/arc/include/asm/tlb-mmu1.h ; hence extra instruction to clean