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Message-ID: <479F7049.3080904@bobjweil.com>
Date:	Tue, 29 Jan 2008 13:28:25 -0500
From:	rgheck <rgheck@...jweil.com>
To:	Mark Lord <liml@....ca>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Daniel Barkalow <barkalow@...ervon.org>,
	Gene Heskett <gene.heskett@...il.com>,
	Zan Lynx <zlynx@....org>,
	Calvin Walton <calvin.walton@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux ide Mailing list <linux-ide@...r.kernel.org>
Subject: Re: Problem with ata layer in 2.6.24

Mark Lord wrote:
> rgheck wrote:
>> Alan Cox wrote:
>>>> not one problem but lots---is sufficiently widespread that a Mini 
>>>> HOWTO, say, would be really welcome and, I'm guessing, widely used.
>>>>     
>>>
>>> We don't see very many libata problems at the distro level and they for
>>> the most part boil down to
>>>
>>> - sata_nv with >4GB of RAM, knowing being worked on, no old IDE driver
>>> anyway
>>>   
>> Is this >4GB or >=4GB? I've seen contradictory reports, and I've got 
>> 4GB.
> ..
>
> For all practical purposes, most memory over 3GB (or sometimes even 2GB)
> on a 32-bit x86 system is treated as >4GB by the motherboard.
>
> Because it's not the amount of *memory* that matters so much,
> but rather the amount of *used address space*.  Video cards,
> PCI devices, other motherboard resources etc.. can all subtract
> from the available address space, leaving much less than 4GB
> for your RAM.

Right. So it looks like I do have this issue, though I haven't seen any 
actual problems on 24. Is there a known workaround?

rh

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