__readq 96 arch/x86/include/asm/io.h build_mmio_read(__readq, "q", u64, "=r", ) __readq 100 arch/x86/include/asm/io.h #define readq_relaxed(a) __readq(a) __readq 103 arch/x86/include/asm/io.h #define __raw_readq __readq