linux-kernel - Re: [PATCH v4 2/2] powerpc: Uprobes port to powerpc

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Message-ID: <20120822155521.GA3993@redhat.com>
Date:	Wed, 22 Aug 2012 17:55:21 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc:	ppcdev <linuxppc-dev@...ts.ozlabs.org>,
	lkml <linux-kernel@...r.kernel.org>, benh@...nel.crashing.org,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>, peterz@...radead.org,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, michael@...erman.id.au
Subject: Re: [PATCH v4 2/2] powerpc: Uprobes port to powerpc

On 08/22, Ananth N Mavinakayanahalli wrote:
>
> +int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long addr)
> +{
> +	unsigned int insn;
> +
> +	if (addr & 0x03)
> +		return -EINVAL;
> +
> +	memcpy(&insn, auprobe->insn, MAX_UINSN_BYTES);
> +	if (is_trap(insn))
> +		return -ENOTSUPP;

This addresses the only concern I had, thanks.

Once again, I am in no position to review the powerpc code, but
since I made some noise before: I think the patch is fine.

Oleg.

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