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From:   "Rafael J. Wysocki" <rafael@kernel.org>
Date:   Wed, 29 Sep 2021 16:45:00 +0200
Message-ID: <CAJZ5v0jnFEx5OGyUEFzc72FBW_aVWs=dZDmyt4-0HmArhdEuog@mail.gmail.com>
Subject: Re: [PATCHv1] ACPI: processor idle: Allow playing dead in C3 state
To:     Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc:     "Lazar, Lijo" <lijo.lazar@amd.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>,
        ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Mario Limonciello <mario.limonciello@amd.com>,
        "Gong, Richard" <richard.gong@amd.com>
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On Wed, Sep 29, 2021 at 4:09 PM Boris Ostrovsky
<boris.ostrovsky@oracle.com> wrote:
>
>
> On 9/29/21 1:37 AM, Lazar, Lijo wrote:
> >
> >
> >
> > Apologies to barge in. This is regarding the patch you added years back - https://www.spinics.net/lists/linux-pm/msg27003.html
> >
> > Do you recall why C3 was not considered for offline/play dead scenarios in the original patch?
>
>
> Not really. Perhaps processors from that time (at least AMD ones) did not support C3?

OK, thanks!

I guess the only way to find out is to try it and see then.