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how to tell linux (on x86) to ignore 1M or memory

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From: Bart Trojanowski <bart@...>
To: <linux-kernel@...>
Subject: how to tell linux (on x86) to ignore 1M or memory
Date: Thursday, April 19, 2007 - 10:18 am

I need to preserve some state from the bios before entering protected
mode.  For now I want to copy it into some ram accessible by real-mode,
say the last megabyte visible in real-mode.

What's the easiest way to have linux ignore the megabyte starting at 15M?

Cheers,
-Bart
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Messages in current thread:
how to tell linux (on x86) to ignore 1M or memory, Bart Trojanowski, (Thu Apr 19, 10:18 am)
Re: how to tell linux (on x86) to ignore 1M or memory, Rene Herman, (Fri Apr 20, 3:01 pm)
Re: how to tell linux (on x86) to ignore 1M or memory, H. Peter Anvin, (Thu Jun 21, 9:46 pm)
Re: how to tell linux (on x86) to ignore 1M or memory, Rene Herman, (Fri Jun 22, 9:16 am)
Re: how to tell linux (on x86) to ignore 1M or memory, Paolo Ornati, (Thu Apr 19, 10:30 am)