linux-kernel - Re: [PATCH] cpuidle: remove cpu_pm calls when entering a idle state

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAPKp9ubMekLZ_GsMjtVg04BqDuDtQ5cW1WH=jkQEsgyMvb2fCw@mail.gmail.com>
Date:   Fri, 21 Oct 2016 10:59:49 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Chenhui Zhao <chenhui.zhao@....com>
Cc:     Linux PM list <linux-pm@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        open list <linux-kernel@...r.kernel.org>, z.chenhui@...il.com,
        Sudeep Holla <sudeep.holla@....com>
Subject: Re: [PATCH] cpuidle: remove cpu_pm calls when entering a idle state

Hi Chenhui,

On Fri, Oct 21, 2016 at 10:32 AM, Chenhui Zhao <chenhui.zhao@....com> wrote:
> The functions, cpu_pm_enter and cpu_pm_exit, assume that CPU would
> be reset when entering and exiting a idle state. If that is not the
> case, they would cause issue.
>

So are you OK to break all the states that would be reset ?
This is not a proper solution. Can you provide more details on the issue
you are facing ? What platform ? which idle states ? and so on..

Regards,
Sudeep