IOSAPIC_MASK_SHIFT 49 arch/ia64/include/asm/iosapic.h #define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT) IOSAPIC_MASK_SHIFT 243 arch/ia64/kernel/iosapic.c ((mask ? 1 : 0) << IOSAPIC_MASK_SHIFT) |