Re: [PATCH v9 09/26] arm64: Unmask PMR before going idle

[Catalin Marinas]

On Mon, Jan 21, 2019 at 03:33:28PM +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.
> 
> Signed-off-by: Julien Thierry <julien.thierry@xxxxxxx>
> Suggested-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>