linux-kernel - Re: [PATCH 0/1] (Was: cleanup DO_ERROR*() to prepare for uprobes fixes)

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Message-ID: <5371235F.3040600@linaro.org>
Date:	Mon, 12 May 2014 15:39:11 -0400
From:	David Long <dave.long@...aro.org>
To:	Oleg Nesterov <oleg@...hat.com>
CC:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Subject: Re: [PATCH 0/1] (Was: cleanup DO_ERROR*() to prepare for uprobes
 fixes)

On 05/12/14 13:08, Oleg Nesterov wrote:
> On 05/08, Oleg Nesterov wrote:
>>
>> But let me send the initial changes first for review. If they pass the review
>> and if nobody objects, I'd like to route them along with the pending uprobes
>> fixes.
>
> OK, nobody cares ;)
>
> So I am going to ask Ingo to pull these changes plus the following minor fix.
>
> To remind, I think that traps.c needs more cleanups: do_general_protection()
> and math_error() should be converted into DO_ERROR(), DIE_GPF should die, and
> the users of show_unhandled_signals() should be unified/cleanuped.
>
> Ananth, David, this is x86 specific, but at first glance powerpc/arm might
> want to use uprobe_get_trap_addr() too.
>
> Oleg.
>

Thanks for the heads-up.  I currently have a preliminary patch to use 
the PC LSB to identify Thumb-mode instructions on ARM but I don't think 
this adds any new hinderances to that in the intended use case.

-dl

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