Re: [Linux-ia64] TODO list

From: Don Dugger <n0ano_at_valinux.com>
Date: 2001-02-10 07:01:45
It also isn't as easy to do as you might think.  We were looking into this
at one time and you have to be really carefull about stack management
because you can wind up running in kernel mode with a user stack pointer.
This would cause serious problems when an interrupt comes in.

On Fri, Feb 09, 2001 at 11:42:09AM -0800, David Mosberger wrote:
> >>>>> On Fri, 09 Feb 2001 14:14:18 -0500, Jun Nakajima <jun@sco.com> said:
> 
>   Jun> Do we want to support epc-based system calls? I know some other
>   Jun> IA-64 OS uses that mechanism. I'm not sure how much perfermance
>   Jun> gain we can get by that in Linux, though.
> 
> That's certainly something I'm interested in investigating.  It's not
> nearly as obvious a win as it may seem at first, so it's something that
> needs to be looked at carefully.
> 
> In any case, this would be something for 2.5.x, so I don't think we
> should clutter the current TODO list with such things (there are LOTS
> of other performance related things we can do...).
> 
> 	--david
> 
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-- 
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
n0ano@valinux.com
Ph: 303/938-9838
Received on Fri Feb 09 12:02:21 2001

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