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by eqvinox 1116 days ago
MSR-poking Tool for Zen1 Ryzen CPUs to disable C6: https://github.com/r4m0n/ZenStates-Linux/blob/master/zenstat...

Not sure if this is applicable to EPYC CPUs, probably not. But I would expect that it's possible to disable C6 in some similar way on EPYC CPUs without rebooting the system. (If you are actually at risk of running into this issue, you likely don't want to reboot the system…)