From: Brice Goglin <Brice.Goglin@inria.fr>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
Maciej Sosnowski <maciej.sosnowski@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: how to get a DMA channel near a process?
Date: Wed, 26 Aug 2009 07:32:15 +0200 [thread overview]
Message-ID: <4A94C8DF.4030406@inria.fr> (raw)
In-Reply-To: <4A94C5B6.3060907@gmail.com>
Robert Hancock wrote:
> On 08/25/2009 07:05 AM, Brice Goglin wrote:
>> Hello,
>>
>> I am playing with DMA engine on a Nehalem box with two X58 chipsets
>> (Supermicro X8DAH). My understanding is that there are 8 DMA channels on
>> each chipset, so 8 channels near each processor. Unfortunately, my BIOS
>
> Don't think that DMA channel is the term you are looking for, maybe
> PCI Express lanes? DMA channels are an ancient ISA thing.
Talking about DMA Engine devices/channels such as Intel I/OAT. See
include/linux/dmaengine.h
Brice
next prev parent reply other threads:[~2009-08-26 5:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-25 13:05 how to get a DMA channel near a process? Brice Goglin
2009-08-26 5:18 ` Robert Hancock
2009-08-26 5:32 ` Brice Goglin [this message]
2009-08-26 6:10 ` Dan Williams
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