linux-kernel - Re: [PATCH 2/2] uprobes/powerpc: Make use of generic routines to enable single step

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Message-ID: <20121126170135.GA8668@redhat.com>
Date:	Mon, 26 Nov 2012 18:01:35 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	"Suzuki K. Poulose" <suzuki@...ibm.com>
Cc:	bigeasy@...utronix.de, ananth@...ibm.com,
	srikar@...ux.vnet.ibm.com, peterz@...radead.org,
	benh@...nel.crashing.org, mingo@...e.hu, anton@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] uprobes/powerpc: Make use of generic routines to
	enable single step

On 11/26, Suzuki K. Poulose wrote:
>
> @@ -121,8 +125,11 @@ int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
>  	 * to be executed.
>  	 */
>  	regs->nip = utask->vaddr + MAX_UINSN_BYTES;
> +	regs->msr = utask->autask.saved_msr;
> +#ifdef CONFIG_PPC_ADV_DEBUG_REGS
> +	mtspr(SPRN_DBCR0, utask->autask.saved_dbcr);
> +#endif
>  
> -	user_disable_single_step(current);

Don't we need the same change in arch_uprobe_abort_xol() ?

Oleg.

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