linux-kernel - Re: "EXT3-fs error" after resume from s2ram

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Message-ID: <4A574049.5090708@kernel.org>
Date:	Fri, 10 Jul 2009 22:21:13 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Robert Hancock <hancockrwd@...il.com>
CC:	Christof Warlich <christof@...lich.name>,
	Tejun Heo <htejun@...il.com>, linux-kernel@...r.kernel.org,
	ide <linux-ide@...r.kernel.org>
Subject: Re: "EXT3-fs error" after resume from s2ram

Hello,

Robert Hancock wrote:
> On Thu, Jul 9, 2009 at 12:17 PM, Christof Warlich<christof@...lich.name> wrote:
>> Just one clarification: From what I understood so far, it will be impossible
>> to ever utilize the full disk capacity as long as the BIOS applies the HPA
>> on boot, right?
> 
> I believe that's the case, yes.. if the BIOS is applying the HPA on
> each boot, then we can't change the max address again without a
> hardware reset..

This is one of the reasons why libata was switched to prefer hardreset
so that BIOS lock downs can be circumvented.  PATA drivers
unfortunately usually don't implement hardreset.  :-(

I'll forward the patch upstream.

Thanks.

-- 
tejun
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