From: Ingo Molnar <mingo@kernel.org>
To: hpa@zytor.com
Cc: Peter Zijlstra <peterz@infradead.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
bp@alien8.de, jpoimboe@redhat.com, richard.weinberger@gmail.com,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] x86: Implement __WARN using UD0
Date: Fri, 24 Feb 2017 10:15:37 +0100 [thread overview]
Message-ID: <20170224091537.GA18182@gmail.com> (raw)
In-Reply-To: <ACE4966E-DF3F-4699-BB2A-B72183353AB7@zytor.com>
* hpa@zytor.com <hpa@zytor.com> wrote:
> Incidentally, as an alternative to a #UD, int $9 could be an alternative
> (exception vector 9 was discontinued with the 486.)
With thousands of call sites a one byte opcode would be preferred, that's why INT3
is so nice.
Thanks,
Ingo
next prev parent reply other threads:[~2017-02-24 9:15 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-23 13:28 [PATCH] x86: Implement __WARN using UD0 Peter Zijlstra
2017-02-23 14:09 ` Peter Zijlstra
2017-02-23 14:59 ` Peter Zijlstra
2017-02-23 15:09 ` hpa
2017-02-23 15:23 ` Peter Zijlstra
2017-02-23 15:32 ` hpa
2017-02-23 16:03 ` Borislav Petkov
2017-02-23 14:12 ` Josh Poimboeuf
2017-02-23 14:17 ` Borislav Petkov
2017-02-23 14:36 ` Peter Zijlstra
2017-02-23 14:14 ` Arjan van de Ven
2017-02-23 14:57 ` Peter Zijlstra
2017-02-24 7:43 ` Ingo Molnar
2017-02-24 8:31 ` Peter Zijlstra
2017-02-24 9:06 ` hpa
2017-02-24 9:11 ` hpa
2017-02-24 9:15 ` Ingo Molnar [this message]
2017-02-24 9:46 ` Borislav Petkov
2017-02-24 9:52 ` H. Peter Anvin
[not found] ` <21ac6e53-2fcd-52e9-e72d-9faf7da14d1e@zytor.com>
2017-02-24 10:41 ` Peter Zijlstra
2017-02-25 10:38 ` Borislav Petkov
2017-02-25 17:55 ` hpa
2017-02-25 19:38 ` Borislav Petkov
2017-02-25 20:04 ` hpa
2017-02-25 20:29 ` Borislav Petkov
2017-02-24 11:16 ` [PATCH -v2] " Peter Zijlstra
2017-02-25 8:19 ` [RFC][PATCH] bug: Add _ONCE logic to report_bug() Peter Zijlstra
2017-02-25 9:18 ` Ingo Molnar
2017-02-25 9:44 ` Peter Zijlstra
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