linux-kernel - RE: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by inconsistent e820 map

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Message-ID: <36DF59CE26D8EE47B0655C516E9CE64026584C96@SHSMSX101.ccr.corp.intel.com>
Date:	Thu, 17 Sep 2015 18:21:00 +0000
From:	"Chen, Yu C" <yu.c.chen@...el.com>
To:	Pavel Machek <pavel@....cz>
CC:	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"Brown, Len" <len.brown@...el.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Zhang, Rui" <rui.zhang@...el.com>,
	"jlee@...e.com" <jlee@...e.com>,
	"joeyli.kernel@...il.com" <joeyli.kernel@...il.com>,
	"yinghai@...nel.org" <yinghai@...nel.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: RE: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
 inconsistent e820 map

Hi ,Pavel
> -----Original Message-----
> From: Pavel Machek [mailto:pavel@....cz]
> Sent: Thursday, September 17, 2015 2:08 PM
> To: Chen, Yu C
> Cc: rjw@...ysocki.net; Brown, Len; linux-pm@...r.kernel.org; linux-
> kernel@...r.kernel.org; Zhang, Rui; jlee@...e.com;
> joeyli.kernel@...il.com; yinghai@...nel.org
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
> 
> >    With v3 patch applied, I did 30 cycles on my problematic platform,
> >    no panic triggered anymore(50% reproducible before patched, by
> >    plugging/unplugging memory peripheral during hibernation), and it
> >    just warns of invalid pages.
> 
> NAK. Turning panic into data corruption is a bad idea.
> 
Once an invalid page is found , the whole restoring process would be terminated
(before restoring the data pages)
I 'm not sure what does "data corruption" mean here?  
Thanks.

Best Regards,
Yu
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