linux-kernel - Re: [PATCH rc8-mm1] hotfix libata-scsi corruption

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Message-ID: <Pine.LNX.4.64.0801222238140.30816@blonde.site>
Date:	Tue, 22 Jan 2008 22:41:11 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jeff@...zik.org>,
	Alan Stern <stern@...land.harvard.edu>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH rc8-mm1] hotfix libata-scsi corruption

On Tue, 22 Jan 2008, Alan Cox wrote:
> > However, I'd like to see if we can track the problem through the SG_IO
> > direct path ... how many adjacent page bytes are corrupt?  Just a few or
> > a large number (I'm wondering if it's an off by one or off by alignment
> > type bug)?

We moved away from that concern ....

> Which ATA controller is involved - in theory ATA DMA is byte aligned safe
> (or dword anyway) in practice I don't know if we've ever tested the non
> 512 byte aligned case historically for ATA just ATAPI ?

.... but if it's still relevant, this was with ata_piix.

Hugh
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