From: Jeff Garzik <jgarzik@pobox.com>
To: Jens Axboe <axboe@suse.de>
Cc: Gary Poppitz <poppitzg@iomega.com>, linux-ide@vger.kernel.org
Subject: Re: Issues with SIS 964 chipset on SATA
Date: Thu, 17 Feb 2005 13:38:35 -0500 [thread overview]
Message-ID: <4214E4AB.2010507@pobox.com> (raw)
In-Reply-To: <20050217083825.GA8695@suse.de>
Jens Axboe wrote:
> On Thu, Feb 17 2005, Jeff Garzik wrote:
>>It looks like I will need to do a workaround for all SATA ATAPI devices:
>> if the transfer is not a multiple of 4 bytes, pad it with an DMA 1-3
>>byte DMA segment.
>
>
> Yeah we definitely need something like that. The optimal solution is to
> make sure that all requests are fed through the bounce logic like fs
> requests.
Could you elaborate? I'm not sure I follow.
I hope you're not suggesting leaking 1-3 bytes of random memory, past
the end of the request, into the DMA stream?
Jeff
next prev parent reply other threads:[~2005-02-17 18:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-07 19:02 Issues with SIS 964 chipset on SATA Gary Poppitz
2005-02-07 21:44 ` Jeff Garzik
2005-02-17 8:26 ` Jeff Garzik
2005-02-17 8:38 ` Jens Axboe
2005-02-17 13:26 ` Mark Lord
2005-02-17 18:36 ` Jeff Garzik
2005-02-17 18:38 ` Jeff Garzik [this message]
2005-02-17 8:37 ` ATAPI issues (was Re: Issues with SIS 964 chipset on SATA) Jeff Garzik
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