linux-kernel - Re: DMA Errors from SATA Controller with 4G Memory Remapping Enabled

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Message-ID: <1572001.X28n9jtBC3@darkstar>
Date:	Wed, 14 Nov 2012 09:58:33 +0100
From:	Dimitar Popov <dimitar.georgiev.popov@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: DMA Errors from SATA Controller with 4G Memory Remapping Enabled

On Tuesday 13 November 2012 22:34:21 Alan Cox wrote:
> On Tue, 13 Nov 2012 23:08:07 +0100
> 
> Dimitar Popov <dimitar.georgiev.popov@...il.com> wrote:
> > Hi all,
> > 
> > I have an old computer with motherboard ASUS SK8N with AMD Opteron 148 and
> > 4 GiB of DDR400. There is an onboard SATA Promise RAID controller working
> > in IDE mode (i.e. not as RAID controller) with 2 SATA disks. In order to
> > use all 4 GiB RAM I need to enable the "4G Memory Remapping" option from
> > the BIOS.
> > However, if I do that I receive the following errors:
> Pretty sure I know what that is as it's come up befor but the person
> reporting it vanished without testing fixes.
> 
> Can you run tests on a fix

Yes, I can run tests - it is easily reproducible: I just need to start writing 
on one of the disks. (sorry for the two messages)
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