We are running seL4 microkernel on 4 cores Zynq UltraScale+ (zcu102 board). The implementation includes multiple processes, hypervisor and virtual machine running on dedicated core. After several hours running (it could be 2 or even 8 hours) the whole microkernel locks up. After some investigation I have found that no interrupts generated anymore - at least there is no interrupts coming to ISR. Inside ISR I have monitored PL2 Physical Timer Control register, which feeds a scheduler and didn't find any problems - it stays enabled and not masked.
I will appreciate any idea/direction for approaching this problem.
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