cntfrq_el0精度问题 #14

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on Aug 23, 2023

咨询一下，cntfrq_el0的精度是不是达不到cycle的级别，想要达到cycle的级别还得用PMCCNTR_EL0
但是PMCCNTR_EL0需要root权限才行是吧？好像需要先在内核态使能才行

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