Re: DMA to user space

From: Richard B. Johnson (root@chaos.analogic.com)
Date: Sun Mar 19 2000 - 01:37:05 EST


On Fri, 17 Mar 2000, Stephen C. Tweedie wrote:

> Hi,
>
> On Thu, 16 Mar 2000 08:22:38 -0500 (EST), "Richard B. Johnson"
> <root@chaos.analogic.com> said:
>
> The question was not about doing it from user mode. It was about
> accessing user space from a kernel-mode driver.

I'm sorry. The question was not clear. How did you determine that
"DMA to user-space" meant from a driver? Further, how did you
determine that it was not an ISA device?

I thought that he said that he wanted to DMA multiple devices directly
to user-space. This doesn't seem like a "driver" to me, especially
since he explained how much "better" it would be than the "usual" way.

Cheers,
Dick Johnson

Penguin : Linux version 2.3.41 on an i686 machine (800.63 BogoMips).

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