Re: [rtl] Bigphysarea

[Wolfgang Denk <wd@denx.de>]

In message <JHEDINBALLCIHDOEAOMCOEJMCAAA.troy.davis@airbornedatasystems.com> you wrote:
>
> 	This is off topic I know, but I need to create a large chunk of contiguous
> physical ram.  I know that bigphysarea is a patch that can be applied to the
> kernel to do this.  The only patch I have seen is for 2.2.13.  Does anyone

I've also seen bigphysarea patches for later kernels, including 2.3.xx.

> know if there is a patch for 2.2.14? I'm fairly  certain  that  the
2.2.13  > patch will work with 2.2.14 but it would be nice to know if
there is a

IIRC the 2/.2.13 patch will apply celanly (and run without problems) under 2.2.14.

> 	I've also heard another way is to use the memory function of lilo to tell
> linux it has less memory than is present.  Then you create a device to
> access the unseen area of memory.  Has anyone tried to do this, or ever
> heard of it being done?

Yes, we've used that, too. [I always use it as part of our regression
tests to see how much memory Linux really needs to run.]

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
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