linux-kernel - Re: [PATCH] EFI x86: pass firmware call parameters on the stack

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Message-Id: <1170184582.21603.76.camel@funkylaptop>
Date:	Tue, 30 Jan 2007 20:16:22 +0100
From:	Frédéric Riss <frederic.riss@...il.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	Matt Domsch <Matt_Domsch@...l.com>, linux-kernel@...r.kernel.org,
	artiom.myaskouvskey@...el.com, bjorn.helgaas@...com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] EFI x86: pass firmware call parameters on the stack

Le mardi 30 janvier 2007 à 11:10 -0800, Andrew Morton a écrit :
> > This patch fixes the issue for x86, but the file is also used by IA64. I
> > would have used asmlinkage to force arguments on the stack, but it has a
> > special meaning on IA64, thus I used a raw regparm(0) GCC attribute.
> > This attribute is documented only for x86, I hope it has no side effect
> > on other archs.
> 
> hm, this sounds like a fairly serious problem.  Has this been runtime
> tested on ia64 and x86_64>

Not by me, the only EFI box I've access to is my Mac Mini.

Fred.

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