linux-kernel - Re: [PATCH V3] ARM: imx: use outer

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Message-ID: <CAOMZO5An8ASQf74mUP07XucJQWsPRjZSB21VzCeHBqcbWJtRBQ@mail.gmail.com>
Date:   Wed, 3 Jan 2018 00:43:35 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Peng Fan <peng.fan@....com>
Cc:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "A.s. Dong" <aisheng.dong@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        Fabio Estevam <fabio.estevam@....com>,
        Sascha Hauer <kernel@...gutronix.de>,
        "van.freenix@...il.com" <van.freenix@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V3] ARM: imx: use outer_disable/resume for low power

Hi Peng,

On Tue, Jan 2, 2018 at 10:53 PM, Peng Fan <peng.fan@....com> wrote:

>
> A better solution maybe
>
> if (outer_cache.write_sec)
>         outer_disable();
>
> .....
>
> if (outer_cache.write_sec)
>         outer_resume();
>
> Then, nothing changed for secure linux. The outer_disable/outer_resume only effects
> When linunx running in non-secure world.
>
> Any comments?

Looks like a better solution, indeed.