From: Adrian Bunk <bunk@kernel.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Jeff Dike <jdike@addtoit.com>,
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 13:17:23 +0100 [thread overview]
Message-ID: <20071205121723.GK15974@stusta.de> (raw)
In-Reply-To: <20071205101845.GB22792@elte.hu>
On Wed, Dec 05, 2007 at 11:18:45AM +0100, Ingo Molnar wrote:
>
> * 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?
The UML kernel is linked against libc...
> Ingo
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
next prev parent reply other threads:[~2007-12-05 12:17 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
2007-12-05 12:17 ` Adrian Bunk [this message]
2007-12-05 0:17 ` Jeff Dike
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20071205121723.GK15974@stusta.de \
--to=bunk@kernel.org \
--cc=harvey.harrison@gmail.com \
--cc=hpa@zytor.com \
--cc=jdike@addtoit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.