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Date: Thu, 21 Mar 2013 12:47:07 +0530
From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
To: Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH] powerpc/uprobes: teach uprobes to ignore gdb breakpoints
Message-ID: <20130321071707.GB5271@in.ibm.com>
References: <20130320104033.GA19844@in.ibm.com>
 <20130320122639.GA29541@redhat.com> <20130320124301.GA30887@redhat.com>
 <20130320154245.GB8246@in.ibm.com> <20130320160728.GB20352@redhat.com>
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Cc: ppcdev <linuxppc-dev@lists.ozlabs.org>,
 Srikar Dronamraju <srikar@linux.vnet.ibm.com>, stable@vger.kernel.org
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On Wed, Mar 20, 2013 at 05:07:28PM +0100, Oleg Nesterov wrote:
> On 03/20, Ananth N Mavinakayanahalli wrote:
> >
> > On Wed, Mar 20, 2013 at 01:43:01PM +0100, Oleg Nesterov wrote:
> > > On 03/20, Oleg Nesterov wrote:
> > > >
> > > > But we did not install UPROBE_SWBP_INSN. Is it fine? I hope yes, just to
> > > > verify. If not, we need 2 definitions. is_uprobe_insn() should still check
> > > > insns == UPROBE_SWBP_INSN, and is_swbp_insn() should check is_trap().
> > > >
> > > > And I am just curious, could you explain how X and UPROBE_SWBP_INSN
> > > > differ?
> > >
> > > IOW, if I wasn't clear... Lets forget about gdb/etc for the moment.
> > > Suppose we apply the patch below. Will uprobes on powerpc work?
> > >
> > > If yes, then your patch should be fine. If not, we probably need more
> > > changes.
> >
> > Yes, it will work fine.
> 
> Even if this new insn is conditional?

Yes.