linux-kernel - Re: [RFC PATCH] x86: Unify include/asm-x86/linkage

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Date:	Tue, 04 Dec 2007 14:21:08 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] x86: Unify include/asm-x86/linkage_[32|64].h

On Tue, 2007-12-04 at 22:32 +0100, Ingo Molnar wrote:
> * Harvey Harrison <harvey.harrison@...il.com> wrote:
> 
> > I'm not sure if the definition of asmlinkage and prevent_tail_call can 
> > be omitted as well and let the linux/linkage.h version get picked up 
> > instead.
> 
> no, we cannot remove them - asmlinkage is needed for the syscall entry 
> (and other entry code) to work, the and the prevent_tail_call works 
> around a compiler bug. (which might or might not be fixed in latest gcc 
> - but we generally dont remove workarounds unless we are really sure 
> it's fine.)

OK, but if this patch is acceptable, then there is no more places in the
tree that define the FASTCALL macro, other than the empty default in
include/linux/linkage.h.  So I think a second step would be to start to
get rid of FASTCALL callers elsewhere in the tree...thoughts?

Cheers,

Harvey

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