linux-kernel - Re: [PATCH v3 2.6.39-rc1-tip 14/26] 14: x86: x86 specific probe handling

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Message-ID: <1303145700.32491.891.camel@twins>
Date:	Mon, 18 Apr 2011 18:55:00 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Linux-mm <linux-mm@...ck.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jonathan Corbet <corbet@....net>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Roland McGrath <roland@...k.frob.com>,
	SystemTap <systemtap@...rces.redhat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2.6.39-rc1-tip 14/26] 14: x86: x86 specific probe
 handling

On Fri, 2011-04-01 at 20:05 +0530, Srikar Dronamraju wrote:
> +/*
> + * @reg: reflects the saved state of the task
> + * @vaddr: the virtual address to jump to.
> + * Return 0 on success or a -ve number on error.
> + */
> +void set_ip(struct pt_regs *regs, unsigned long vaddr)
> +{
> +       regs->ip = vaddr;
> +} 

Since we have the cross-architecture function:
instruction_pointer(struct pt_regs*) to read the thing, this ought to be
called set_instruction_pointer(struct pt_regs*, unsigned long) or
somesuch.
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