From: "H. Peter Anvin" <hpa@zytor.com>
To: Petr Tesarik <ptesarik@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>,
Jeremy Fitzhardinge <jeremy@goop.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: remove unneeded endless loop in BUG()
Date: Thu, 19 Feb 2009 10:40:43 -0800 [thread overview]
Message-ID: <499DA7AB.8080000@zytor.com> (raw)
In-Reply-To: <1235068713.15053.99.camel@nathan.suse.cz>
Petr Tesarik wrote:
> Since __builtin_trap() will always generate an illegal instruction, we
> can replace the explicit asm("ud2") with it.
>
> This way gcc will understand that the function never returns, plus it
> won't emit any extra instructions.
>
> Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
I like this. Will apply shortly.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2009-02-19 18:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-19 18:38 [PATCH] x86: remove unneeded endless loop in BUG() Petr Tesarik
2009-02-19 18:40 ` H. Peter Anvin [this message]
2009-02-19 18:59 ` Ingo Molnar
2009-02-19 19:53 ` H. Peter Anvin
2009-02-19 20:47 ` Jeremy Fitzhardinge
2009-02-19 20:48 ` H. Peter Anvin
2009-02-20 8:28 ` Petr Tesarik
2009-02-19 20:29 ` H. Peter Anvin
2009-02-19 20:32 ` Ingo Molnar
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