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Date: Tue, 22 Oct 2002 22:46:44 +0200
From: Vojtech Pavlik <vojtech@suse.cz>
To: erich@uruk.org
Cc: David Grothe <dave@gcom.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: I386 cli
Message-ID: <20021022224644.A25463@ucw.cz>
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In-Reply-To: <E1845KV-0002ab-00@trillium-hollow.org>; from erich@uruk.org on Tue, Oct 22, 2002 at 01:08:43PM -0700
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On Tue, Oct 22, 2002 at 01:08:43PM -0700, erich@uruk.org wrote:

> David Grothe <dave@gcom.com> wrote:
> 
> > In 2.5.41every architecture except Intel 386 has a "#define cli 
> > <something>" in its asm-arch/system.h file.  Is there supposed to be such a 
> > define in asm-i386/system.h?  If not, where does the "official" definition 
> > of cli() live for Intel?  Or what is the include file that one needs to 
> > pick it up?  I can't find it.
> 
> I'm sure there is no definition because "cli" is the native assembler
> instruction on x86.

Wrong reason. Furthermore, cli(), meaning 'global interrupt disable,
across all processors', is not doable with a single instruction anyway.
It's not defined, because it should not be used - usually the usage of
cli() means a bug.

-- 
Vojtech Pavlik
SuSE Labs
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