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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: norbert.roos@cluster-labs.de (Norbert Roos)
Cc: linux-kernel@vger.kernel.org
Subject: Re: Probs with PCI bus master DMA to user space
Date: Tue, 20 Feb 2001 12:37:21 +0000 (GMT)	[thread overview]
Message-ID: <E14VC2m-0006Xe-00@the-village.bc.nu> (raw)
In-Reply-To: <3A924D8A.FBEAD695@cluster-labs.de> from "Norbert Roos" at Feb 20, 2001 11:57:14 AM

> I'm currently writing a driver which wants to transfer data between main
> memory and a PCI device. The data buffers are allocated by the program
> which uses the driver and therefore lie in the user space. Pointers to

Allocate the buffers in the kernel and mmap() them into user space

  reply	other threads:[~2001-02-20 12:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-02-20 10:57 Norbert Roos
2001-02-20 12:37 ` Alan Cox [this message]
2001-02-20 17:03 ` David Woodhouse
2001-02-20 13:31 Norbert Roos
2001-02-20 13:37 ` Jeff Garzik
2001-02-20 14:10   ` Norbert Roos
2001-02-20 14:49     ` Jeff Garzik
2001-02-20 16:50       ` Norbert Roos

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