linux-kernel - reserving a region of highmem at boot time

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Message-Id: <B239D728-5354-42F7-90E6-DE19429D0FBF@kernel.crashing.org>
Date:	Tue, 8 Jan 2008 11:46:16 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	linux-mm@...ck.org
Subject: reserving a region of highmem at boot time

Is there a way to mark a page if its in highmem as reserved at boot  
time?

I'm on a ppc32 system and we are trying to ensure that the last page  
of memory isn't used by the kernel.

I see reserve_bootmem but that seems to only deal with low memory.

thanks

- k
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