Date: Fri, 28 Oct 2016 00:22:28 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: =?ISO-8859-15?Q?Ville_Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
cc: Len Brown <len.brown@intel.com>, feng.tang@intel.com,
        Steven Rostedt <rostedt@goodmis.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Rik van Riel <riel@redhat.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>, 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>, "Zhang, Rui" <rui.zhang@intel.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arch@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: [PATCH] intel_idle: Don't use on Lenovo Ideapad S10-3t
In-Reply-To: <1477591814-10985-1-git-send-email-ville.syrjala@linux.intel.com>
Message-ID: <alpine.DEB.2.20.1610280021410.4913@nanos>
References: <1446499360-31984-1-git-send-email-ville.syrjala@linux.intel.com> <1477591814-10985-1-git-send-email-ville.syrjala@linux.intel.com>
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On Thu, 27 Oct 2016, ville.syrjala@linux.intel.com wrote:

> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Lenovo Ideapad S10-3t hangs coming out of S3 with intel_idle.
> The two workaround that seem to help are "intel_idle.max_cstate=0"
> or "nohz=off highres=off".
> 
> At a first glance quirk_tigerpoint_bm_sts() seemed promising, but
> even when moved to early_resume it didn't do anything.
> 
> I have no idea what's wrong here, so let's just disable intel_idle
> for these machines using a DMI match.
> 
> I sent this patch originally about one year ago, at which time I was
> asked to file a bug, which I did [1], which was mostly a waste of time
> since no one actually did anything to fix the problem. In the
> meantime even acpi-idle got broken and then fixed again [2], so at
> least there's still a working alternative. As intel_idle has never
> worked on this machine, and it looks like no one has any real
> intention to fix it, I'm going to suggest *again* that we simply
> disable intel_idle on this machine and get on with life.

Please put that patch on hold. We have some new data on this.

Thanks,

	tglx
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