linux-kernel - Re: [PATCH 4/4] x86/jump-label: Show where and what was wrong on errors

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Message-ID: <520295C9.5080608@zytor.com>
Date:	Wed, 07 Aug 2013 11:45:29 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>
CC:	Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Jason Baron <jbaron@...mai.com>
Subject: Re: [PATCH 4/4] x86/jump-label: Show where and what was wrong on
 errors

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


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