linux-kernel - RE: [PATCH 00/16] raid acceleration and asynchronous offload api for 2.6.22

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Message-ID: <Pine.LNX.4.64.0705021218380.25382@p34.internal.lan>
Date:	Wed, 2 May 2007 12:19:14 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	"Williams, Dan J" <dan.j.williams@...el.com>
cc:	Nick Piggin <nickpiggin@...oo.com.au>, neilb@...e.de,
	akpm@...ux-foundation.org,
	"Leech, Christopher" <christopher.leech@...el.com>,
	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org
Subject: RE: [PATCH 00/16] raid acceleration and asynchronous offload api
 for 2.6.22



On Wed, 2 May 2007, Williams, Dan J wrote:

>> From: Justin Piszcz [mailto:jpiszcz@...idpixels.com]
>> I have not been following this closely, must you have an
>> CONFIG_INTEL_IOP_ADMA piece of hardware and/or chipset to use this
>> feature or can regular desktop users take hold of it as well?
>>
> Currently this feature is available on the iop series of processors,
> e.g. http://www.intel.com/design/iio/iop348.htm
>
> And there is a driver in the works to support the 440spe platform
> (http://marc.info/?l=linux-raid&m=117400143317440&w=2)
>
> Desktops currently take advantage of architecture specific SIMD
> instructions to accelerate xor calculations.
>
>> Justin.
>
> Dan
>

Ahh-- these are the family of chips in the Areca controllers (or close to 
them)-- so md/software raid will utilize the HW functions of the chip? 
If so, that is pretty slick :)

Justin.
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