From: Ingo Molnar <mingo@elte.hu>
To: Adrian Bunk <bunk@stusta.de>
Cc: Jeff Dike <jdike@addtoit.com>, Adrian Bunk <bunk@kernel.org>,
Harvey Harrison <harvey.harrison@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH] x86: Unify include/asm-x86/linkage_[32|64].h
Date: Wed, 5 Dec 2007 11:18:45 +0100 [thread overview]
Message-ID: <20071205101845.GB22792@elte.hu> (raw)
In-Reply-To: <20071205093139.GJ15974@stusta.de>
* Adrian Bunk <bunk@stusta.de> wrote:
> On Tue, Dec 04, 2007 at 07:19:45PM -0500, Jeff Dike wrote:
> > On Wed, Dec 05, 2007 at 12:15:19AM +0100, Adrian Bunk wrote:
> > > UML can't switch to the regparm(3) convention on i386 since it links
> > > with userspace code, so if assembler code uses this calling convention
> > > we need the C prototype of it annotated accordingly.
> >
> > We're not talking about a global calling convention switch, right?
> > We're talking about selected functions only, in which case, the fact
> > that UML links against libc is irrelevant.
>
> The non-UML i386 switched to globally using the regparm(3) calling
> convention in 2.6.20.
maybe i'm a bit dense, but why cannot UML switch to -mregparm=3 too?
Ingo
next prev parent reply other threads:[~2007-12-05 10:19 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-04 20:53 [RFC PATCH] x86: Unify include/asm-x86/linkage_[32|64].h Harvey Harrison
2007-12-04 21:32 ` Ingo Molnar
2007-12-04 22:21 ` Harvey Harrison
2007-12-04 22:27 ` Ingo Molnar
2007-12-04 22:33 ` Harvey Harrison
2007-12-04 22:45 ` Adrian Bunk
2007-12-04 22:57 ` Harvey Harrison
2007-12-04 23:15 ` Adrian Bunk
2007-12-05 0:19 ` Jeff Dike
2007-12-05 9:31 ` Adrian Bunk
2007-12-05 10:18 ` Ingo Molnar [this message]
2007-12-05 12:17 ` Adrian Bunk
2007-12-05 0:17 ` Jeff Dike
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