From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH] sata_nv: fix ADMA ATAPI issues with memory over 4GB (v3)
Date: Fri, 23 Nov 2007 10:22:21 -0500
Message-ID: <4746F02D.2060204@rtr.ca>
References: <47463534.9010100@shaw.ca>
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To: Robert Hancock <hancockr@shaw.ca>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, ide <linux-ide@vger.kernel.org>, Jeff Garzik <jeff@garzik.org>, Tejun Heo <htejun@gmail.com>

Robert Hancock wrote:
> This fixes some problems with ATAPI devices on nForce4 controllers in ADMA mode
> on systems with memory located above 4GB. We need to delay setting the 64-bit
> DMA mask until the PRD table and padding buffer are allocated so that they don't
> get allocated above 4GB and break legacy mode (which is needed for ATAPI
> devices).
...

Mmm.. I wonder how many other libata drivers have this exact same bug,
whether noticed yet or not ?

Cheers