Date: Fri, 21 Aug 2015 16:54:25 +0100
From: Catalin Marinas <catalin.marinas@arm.com>
To: Leo Yan <leo.yan@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: enable generic idle loop
Message-ID: <20150821155425.GC16410@e104818-lin.cambridge.arm.com>
References: <1440128422-4170-1-git-send-email-leo.yan@linaro.org>
 <20150821090043.GA14072@e104818-lin.cambridge.arm.com>
 <20150821091446.GB4280@leoy-linaro>
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On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > command line options to override default idle loop behavior.
> > 
> > Just curious, what do you need this for?
> 
> With this config, usually we can add "nohlt" in command line to force
> the cpu will never be powered off; so can quickly narrow down if some
> issues are related with cpuidle or not.
> 
> And if CPU is powered off, then its debug logic also will be powered off.
> So we can simply use this method to let debugger always hot connect with
> the target CPU.

OK.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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