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PMU使用问题

heben

大家好，最近我在AArch32的Non-secure EL1下使用PMU的overflow功能，在溢出中断中读取PMOVSR和PMOVSSET的值时得到的值为0，这样的话我就不能确定是哪个事件计数器触发的中断。大家有碰到这样的情况吗？怎么解决的?（ps：可以确定的是对这两个寄存器的写入是有效的。）

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