linux-kernel - Re: [PATCH 2/5] x86/uprobes: implement x86 specific arch_uprobe_*

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Message-ID: <20120809044356.GA3163@in.ibm.com>
Date:	Thu, 9 Aug 2012 10:13:56 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Roland McGrath <roland@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	stan_shebs@...tor.com
Subject: Re: [PATCH 2/5] x86/uprobes: implement x86 specific
	arch_uprobe_*_step

On Wed, Aug 08, 2012 at 04:53:45PM +0200, Oleg Nesterov wrote:
> On 08/08, Sebastian Andrzej Siewior wrote:

...

> >> ->insn[0] doesn't look right, we should skip the prefixes.

insn_init()
insn_get_opcode()
if (OPCODE1() == 0x9d)

is always the right way of doing it.

...

> And in any case it would be better to re-use auprobe->fixups.

Agreed.

Ananth

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