linux-kernel - Re: [v3.11][3.12][Regression] ACPI / processor: Use common hotplug infrastructure

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Message-ID: <7794021.qcx8jVI5m1@vostro.rjw.lan>
Date:	Sat, 16 Nov 2013 00:00:50 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Joseph Salisbury <joseph.salisbury@...onical.com>
Cc:	rafael.j.wysocki@...el.com, lenb@...nel.org,
	linux-acpi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [v3.11][3.12][Regression]  ACPI / processor: Use common hotplug infrastructure

On Friday, November 15, 2013 11:55:10 PM Rafael J. Wysocki wrote:
> On Friday, November 15, 2013 12:44:11 PM Joseph Salisbury wrote:
> > Hi Rafael,
> > 
> > A kernel bug affecting several users was opened against Ubuntu[0]. 
> > After a bisect, it was found the following commit introduced the regression:
> > 
> > commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
> > Author: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > Date: Fri May 3 00:26:22 2013 +0200
> > 
> >     ACPI / processor: Use common hotplug infrastructure
> > 
> > The regression was introduced as of v3.11-rc1.
> > 
> > This commit doesn't revert cleanly in 3.12, and requires the revert of
> > other commits as well.  I wanted to get your feedback since you are the
> > author.
> 
> Well, that commit has nothing to do with PCMCIA, so I'm not sure how the
> breakage is related to it.
> 
> Moreover, comment #8 reports 3.11.0-11.17 as working and the change you're
> asking about should be in that kernel as well.

Ah, so that was bogus.

Well, I'm still not sure how the commit in question may affect PCMCIA.  I have
a test machine with PCMCIA and it boots correctly with 3.11+.

Thanks!

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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