linux-kernel - Re: [PATCH 1/2] Revert "intel_idle: mark states tables with _

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Date:	Fri, 10 Jan 2014 10:23:36 +0100
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	" Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	" H. Peter Anvin" <hpa@...ux.intel.com>,
	Len Brown <len.brown@...el.com>, Len Brown <lenb@...nel.org>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] Revert
 "intel_idle: mark states tables with __initdata tag"

On Thursday, January 09, 2014 02:38:14 PM Rafael J. Wysocki wrote:
> Hi,
> 
> On Thursday, January 09, 2014 02:20:22 PM Bartlomiej Zolnierkiewicz wrote:
> > 
> > Hi,
> > 
> > On Thursday, January 09, 2014 03:30:26 PM Jiang Liu wrote:
> > > This reverts commit 9d046ccb98085f1d437585f84748c783a04ba240.
> > > 
> > > Commit 9d046ccb98085 marks all state tables with __initdata, but
> > > the state table may be accessed when doing CPU online, which then
> > > causing system crash as below:
> > 
> > Uh, sorry for that - it most likely got missed since I tested it
> > together with intel_idle_cpu_init() removal patches (they are in
> > Rafael's PM tree now).
> > 
> > Anyway, better than reverting it altogether would be to fix it by
> > backporting the following patch:
> > 
> > 	http://lkml.org/lkml/2013/12/20/372
> > 
> > Could you please try to solve the issue this way?
> 
> No, it's too late for that as far as 3.13 is concerned.
> 
> I have the patch above queued up for 3.14, though, so do you think that the
> commit being reverted here can be safely re-applied on top of it?

Yes, the reverted commit can be safely re-applied on top of this patch.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

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