On Thursday 24 November 2016 07:10 PM, Suzuki K Poulose wrote: > + d) CPU Identification : > + MIDR_EL1 is exposed to help identify the processor. On a > + heterogeneous system, this could be racy (just like getcpu()). The > + process could be migrated to another CPU by the time it uses the > + register value, unless the CPU affinity is set. Hence, there is no > + guarantee that the value reflects the processor that it is > + currently executing on. The REVIDR is not exposed due to this > + constraint, as REVIDR makes sense only in conjunction with the > + MIDR. Alternately, MIDR_EL1 and REVIDR_EL1 are exposed via sysfs > + at: > + > + /sys/devices/system/cpu/cpu$ID/regs/identification/ > + \- midr > + \- revidr > +
This doesn't seem to be implemented in this patchset. Siddhesh
