linux-kernel - is memmap=200m@...m,exactmap supposed to work

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Message-ID: <20081009090151.GD29957@atrey.karlin.mff.cuni.cz>
Date:	Thu, 9 Oct 2008 11:01:51 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	kernel list <linux-kernel@...r.kernel.org>
Subject: is memmap=200m@...m,exactmap supposed to work

Hi!

I'm trying to debug weirdly crashing machine.

Interesting part is "blue lightning" screen corruption that happens
just after you press "enter" in grub.

I'd like to tell the machine not to use low memory, and not to use
memory near graphics ram. Ideally, I'd like to

memmap=200m@...m,exactmap

...but that will not boot, with "BUG: Int 6: CR2 00000000". Is there
any "known good, but very safe, memory map I should pass?"

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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