linux-kernel - Re: [14/18] Configure stack size

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Message-ID: <20071003213631.7a047dde@laptopd505.fenrus.org>
Date:	Wed, 3 Oct 2007 21:36:31 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Christoph Lameter <clameter@....com>
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, ak@...e.de, travis@....com
Subject: Re: [14/18] Configure stack size

On Wed, 03 Oct 2007 20:59:49 -0700
Christoph Lameter <clameter@....com> wrote:

> Make the stack size configurable now that we can fallback to vmalloc
> if necessary. SGI NUMA configurations may need more stack because
> cpumasks and nodemasks are at times kept on the stack. With the
> coming 16k cpu support this is going to be 2k just for the mask. This
> patch allows to run with 16k or 32k kernel stacks on x86_74.

there is still code that does DMA from and to the stack....
how would this work with virtual allocated stack?
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