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Subject: Re: S3 resume regression [1cf4f629d9d2 ("cpu/hotplug: Move online
 calls to hotplugged cpu")]
To: =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= <ville.syrjala@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>
References: <20160511101920.GZ4329@intel.com>
Cc: linux-arch@vger.kernel.org, Rik van Riel <riel@redhat.com>,
        Rafael Wysocki <rafael.j.wysocki@intel.com>,
        "Srivatsa S. Bhat" <srivatsa@mit.edu>,
        Peter Zijlstra <peterz@infradead.org>,
        Arjan van de Ven <arjan@linux.intel.com>,
        Rusty Russell <rusty@rustcorp.com.au>,
        Steven Rostedt <rostedt@goodmis.org>, Oleg Nesterov <oleg@redhat.com>,
        Tejun Heo <tj@kernel.org>, Andrew Morton <akpm@linux-foundation.org>,
        Paul McKenney <paulmck@linux.vnet.ibm.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Paul Turner <pjt@google.com>, linux-kernel@vger.kernel.org,
        rui.zhang@intel.com, len.brown@intel.com
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Message-ID: <57332171.8070403@linutronix.de>
Date: Wed, 11 May 2016 14:11:29 +0200
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On 05/11/2016 12:19 PM, Ville Syrjälä wrote:
> Hi,
Hi,

> I have a Lenovo Ideapad S10-3t machine here (Atom N450, 1 core, 2 HT)
> which fails to resume from S3 on 4.6-rc releases. I bisected it down to
> 
> commit 1cf4f629d9d246519a1e76c021806f2a51ddba4d
> Author: Thomas Gleixner <tglx@linutronix.de>
> Date:   Fri Feb 26 18:43:39 2016 +0000
> 
>     cpu/hotplug: Move online calls to hotplugged cpu
> 
> Unfortunately that won't revert cleanly, and neither does the merge
> commit, so I was unable to see if that is the only problematic commit
> in 4.6.
> 
> Any ideas?

do you have a backtrace or anything or is it just not working and you
end up with a blank screen?

Sebastian