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
Date: Tue, 22 Oct 2002 22:46:44 +0200 [thread overview]
Message-ID: <20021022224644.A25463@ucw.cz> (raw)
In-Reply-To: <E1845KV-0002ab-00@trillium-hollow.org>; from erich@uruk.org on Tue, Oct 22, 2002 at 01:08:43PM -0700
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
next prev parent reply other threads:[~2002-10-22 20:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-22 20:01 I386 cli David Grothe
2002-10-22 20:08 ` erich
2002-10-22 20:46 ` Vojtech Pavlik [this message]
2002-10-22 20:55 ` erich
2002-10-22 20:48 ` erich
2002-10-22 20:10 ` Vojtech Pavlik
2002-10-22 20:14 ` Arjan van de Ven
2002-10-22 20:19 ` Sam Ravnborg
2002-10-22 21:27 ` David Grothe
2002-10-22 20:29 ` Alan Cox
2002-10-23 12:02 ` Richard B. Johnson
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