| Date | Fri, 18 Jan 2019 16:23:36 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH v8 09/26] arm64: Unmask PMR before going idle |
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On Tue, Jan 08, 2019 at 02:07:27PM +0000, Julien Thierry wrote: > CPU does not received signals for interrupts with a priority masked by > ICC_PMR_EL1. This means the CPU might not come back from a WFI > instruction. > > Make sure ICC_PMR_EL1 does not mask interrupts when doing a WFI. > > Since the logic of cpu_do_idle is becoming a bit more complex than just > two instructions, lets turn it from ASM to C.
I haven't checked all the call paths, so asking here: does the core code normally call arch_cpu_idle() with IRQs off?
-- Catalin
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