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Date:   Tue, 22 Jan 2019 15:23:41 +0000
From:   Catalin Marinas <>
To:     Julien Thierry <>
Subject: Re: [PATCH v9 09/26] arm64: Unmask PMR before going idle

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 <>
> Suggested-by: Daniel Thompson <>
> Cc: Catalin Marinas <>
> Cc: Will Deacon <>

Reviewed-by: Catalin Marinas <>

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