rdmsr
#define rdmsr(msr, low, high) \
#define rdmsr(msr, val1, val2) \
#undef rdmsr /* avoid accidental MSR usage on, e.g. x86-64 */
#define rdmsr(x, y, z) do { } while (0)
static int rdmsr(unsigned int cpu, unsigned int msr,
static inline uint64_t rdmsr(uint32_t msr)