linux-kernel - Re: How do you allocate huge pages.

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Message-ID: <20070619123803.GD22468@traven>
Date:	Tue, 19 Jun 2007 14:38:03 +0200
From:	Matthias Kaehlcke <matthias.kaehlcke@...il.com>
To:	Shaun Savage <savages@...ages.net>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: How do you allocate huge pages.

El Tue, Jun 19, 2007 at 05:07:30AM -0700 Shaun Savage ha dit:

> I am trying to allocate very large memory within the kernel. I want to
> start by allocating one huge (4M) page and using that as buffer space.

possibly vmalloc() is what you're looking for, if it isn't really a
*page* of 4M, what afaik is impossible with a standard kernel.

vmalloc() allocates virtually contiguous memory, as opposed to
kmalloc() which allocates physically contiguous memory.

-- 
Matthias Kaehlcke
Linux Application Developer
Barcelona

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