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From: "H. Peter Anvin" <hpa@zytor.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Jason Baron <jbaron@akamai.com>
Subject: Re: [PATCH 4/4] x86/jump-label: Show where and what was wrong on errors
Date: Wed, 07 Aug 2013 11:45:29 -0700	[thread overview]
Message-ID: <520295C9.5080608@zytor.com> (raw)
In-Reply-To: <20130807184114.GK17920@pd.tnic>

On 08/07/2013 11:41 AM, Borislav Petkov wrote:
> On Wed, Aug 07, 2013 at 10:51:43AM -0700, H. Peter Anvin wrote:
>> A bigger issue is probably if panic-on-bug should be the default, with
>> !panic being an opt-in debugging option.
> 
> Yes, it might make sense although embedded wants to disable CONFIG_BUG
> on systems which cannot report errors:
> 

There is another thread going on to convert BUG to trap even on machines
where CONFIG_BUG is disabled, i.e. CONFIG_BUG would control the metadata
only.  With the configuration option off, you would get the address of
the failure only.

	-hpa



  reply	other threads:[~2013-08-07 18:46 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-07 16:49 [PATCH 0/4] [GIT PULL][3.12] x86/jump-label: Clean ups and safety checks Steven Rostedt
2013-08-07 16:49 ` [PATCH 1/4] x86/jump-label: Use best default nops for inital jump label calls Steven Rostedt
2013-08-07 16:49 ` [PATCH 2/4] x86/jump-label: Do not bother updating nops if they are correct Steven Rostedt
2013-08-07 16:49 ` [PATCH 3/4] x86/jump-label: Add safety checks to jump label conversions Steven Rostedt
2013-08-07 16:49 ` [PATCH 4/4] x86/jump-label: Show where and what was wrong on errors Steven Rostedt
2013-08-07 17:20   ` Borislav Petkov
2013-08-07 17:33     ` Steven Rostedt
2013-08-07 17:37       ` Borislav Petkov
2013-08-07 17:46         ` Steven Rostedt
2013-08-07 17:51           ` H. Peter Anvin
2013-08-07 18:41             ` Borislav Petkov
2013-08-07 18:45               ` H. Peter Anvin [this message]
2013-08-12 14:31     ` Peter Zijlstra
2013-08-12 14:32       ` H. Peter Anvin
2013-08-12 15:57         ` Ingo Molnar

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