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Date: Sun, 11 Nov 2007 22:43:22 +0200
From: Alexander Motin <mav@FreeBSD.org>
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To: Marcel Moolenaar <xcllnt@mac.com>
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Cc: Kostik Belousov <kostikbel@gmail.com>,
	Julian Elischer <julian@elischer.org>, freebsd-arch@freebsd.org
Subject: Re: Kernel thread stack usage
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Marcel Moolenaar wrote:
> This is not theoretical at all: On ia64 there are 2 stacks. One
> growing down and one growing up. The downward stack is used for
> stack-based variables and the pward growing stack is used by
> the processor for stacked registers.

Hmm, interesting. And which one is pointed by td_kstack there? Or they 
are using same segment but from opposite sides?

> The code suggested will not be meaningful on ia64.

Why? If variable stack growing down and it's segment is pointed by 
td_kstack then where is the problem? Or you mean that system will die 
earlier when those two stacks in same segment will reach each other?

-- 
Alexander Motin