From: "H. Peter Anvin" <hpa@zytor.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
David Miller <davem@davemloft.net>,
kaos@ocs.com.au, xyzzy@speakeasy.org, viro@ftp.linux.org.uk,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH][RFC] getting rid of stupid loop in BUG()
Date: Wed, 25 Jul 2007 10:03:15 -0700 [thread overview]
Message-ID: <46A78253.3070709@zytor.com> (raw)
In-Reply-To: <46A781A4.40103@goop.org>
Jeremy Fitzhardinge wrote:
> Linus Torvalds wrote:
>> .. and I'm pretty sure it's immaterial.
>>
>> We don't just do the "ud2" instruction - we also do the file and line
>> number information after it. Which means that __builtin_trap() is useless.
>>
>
> No, not any more. The file and line info is out of line, in a separate
> section, indexed by the ud2a's eip. The main problem with
> __builtin_trap is that there's no certain way to get the actual ud2a eip
> (ie, paste an asm label onto it).
>
Same difference, then...
-hpa
next prev parent reply other threads:[~2007-07-25 17:07 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-24 15:39 [PATCH][RFC] getting rid of stupid loop in BUG() Al Viro
2007-07-24 16:56 ` Jeremy Fitzhardinge
2007-07-24 17:03 ` H. Peter Anvin
2007-07-24 17:14 ` Al Viro
2007-07-24 17:28 ` H. Peter Anvin
2007-07-24 18:58 ` Jeremy Fitzhardinge
2007-07-24 19:01 ` H. Peter Anvin
2007-07-24 19:13 ` Jeremy Fitzhardinge
2007-07-24 20:04 ` Al Viro
2007-07-24 21:14 ` Jeremy Fitzhardinge
2007-07-25 2:31 ` Trent Piepho
2007-07-25 2:50 ` Keith Owens
2007-07-25 5:09 ` H. Peter Anvin
2007-07-25 6:24 ` Jeremy Fitzhardinge
2007-07-25 6:29 ` David Miller
2007-07-25 6:50 ` Heiko Carstens
2007-07-25 16:56 ` Linus Torvalds
2007-07-25 17:00 ` Jeremy Fitzhardinge
2007-07-25 17:03 ` H. Peter Anvin [this message]
2007-07-25 17:19 ` Linus Torvalds
2007-07-25 17:25 ` Al Viro
2007-07-25 17:36 ` Jeremy Fitzhardinge
2007-07-25 19:35 ` David Miller
2007-07-25 20:26 ` H. Peter Anvin
2007-07-25 19:28 ` David Miller
2007-07-25 17:19 ` Al Viro
2007-07-25 17:22 ` H. Peter Anvin
2007-07-25 17:26 ` Al Viro
2007-07-25 17:35 ` David Howells
2007-07-25 17:41 ` Jeremy Fitzhardinge
2007-07-25 20:29 ` Chuck Ebbert
2007-07-25 20:37 ` H. Peter Anvin
2007-07-25 22:01 ` David Miller
2007-07-25 18:24 ` Linus Torvalds
2007-07-25 17:36 ` Al Viro
2007-07-25 17:44 ` Jeremy Fitzhardinge
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