ppc: apply fix for hard lockup#652

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ojeda merged 2 commits intoRust-for-Linux:rustfrom

ojeda:ppc-apply-fix

Jan 27, 2022

Commits on Jan 27, 2022

Revert "Revert "powerpc/64s/interrupt: Don't enable MSR[EE] in irq handlers unless perf is in use""
ojeda
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powerpc/64s/interrupt: Fix decrementer storm

npiggin
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ojeda
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