Subject: Re: Single file system (buf) read size
To: Chuck Silvers <chuq@chuq.com>
From: Ignatios Souvatzis <ignatios@cs.uni-bonn.de>
List: tech-kern
Date: 03/13/2001 10:24:52
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On Mon, Mar 12, 2001 at 10:19:38PM -0800, Chuck Silvers wrote:
> there's the MAXPHYS constant that you should bump up to the maximum i/o size
> you want to use.  I wouldn't be surprised if you ran into trouble though,
> since I imagine hardly anyone tests drivers with an increased MAXPHYS.

It's worse.

The amiga/dev/asiop driver (and its descendants) have a static area of
dma regions allocated in the address space written by the driver and
read by the downloaded script code... it's scaled as MAXPHYS / MMUpagesize.

Regards,
	-is

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