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Message-ID: <20090929210207.247b94df@infradead.org>
Date: Tue, 29 Sep 2009 21:02:07 +0200
From: Arjan van de Ven <arjan@...radead.org>
To: "H. Peter Anvin" <hpa@...or.com>
Cc: Roland McGrath <roland@...hat.com>,
Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
Arnd Bergmann <arnd@...db.de>,
Containers <containers@...ts.linux-foundation.org>,
Nathan Lynch <nathanl@...tin.ibm.com>,
linux-kernel@...r.kernel.org,
"Eric W. Biederman" <ebiederm@...ssion.com>, mingo@...e.hu,
torvalds@...ux-foundation.org,
Alexey Dobriyan <adobriyan@...il.com>,
Pavel Emelyanov <xemul@...nvz.org>, linux-api@...r.kernel.org,
kosaki.motohiro@...fujitsu.com
Subject: Re: [RFC][v7][PATCH 8/9]: Define clone2() syscall
On Tue, 29 Sep 2009 11:44:52 -0700
"H. Peter Anvin" <hpa@...or.com> wrote:
> On 09/29/2009 11:40 AM, Roland McGrath wrote:
> > Why add a new syscall at all instead of just using a new CLONE_*
> > flag to indicate that the argument layout is different?
>
> What an absolutely atrociously bad idea.
>
> We already have a syscall layer which is painful to thunk in places,
> and this would make it much worse.
>
syscalls are cheap as well.
cheaper than decades of dealing with such multiplexer mess ;/
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
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