linux-kernel - Re: [PATCH] arch: tile: kernel: signal.c: Use explicitly type case "unsigned long *" for register copy

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Message-ID: <545590A6.2040407@gmail.com>
Date:	Sun, 02 Nov 2014 10:02:14 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	Al Viro <viro@...IV.linux.org.uk>
CC:	cmetcalf@...era.com, dwalter@...gle.com, richard@....at,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arch: tile: kernel: signal.c: Use explicitly type case
 "unsigned long *" for register copy

On 11/2/14 4:23, Al Viro wrote:
> On Sat, Nov 01, 2014 at 08:49:45PM +0800, Chen Gang wrote:
>> setup_sigcontext() wants to copy all kernel related registers to user
>> space. So let it copy explicitly instead of copying by exceeding member
>> array border. So let code more clearer and avoid warning.
> 
> Er...  Perhaps it would be better to avoid that shite completely and just
> use __copy_to_user() instead of bothering with loops?
> 

OK, thanks, I shall send patch v2 for it.

Also use __copy_from_user() instead of the code in restore_sigcontext().

Thanks
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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