netdev - Re: [RFC] xfrm: x86_64 CONFIG

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Message-ID: <20100205211328.GC23792@Chamillionaire.breakpoint.cc>
Date:	Fri, 5 Feb 2010 22:13:28 +0100
From:	Florian Westphal <fw@...len.de>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [RFC] xfrm: x86_64 CONFIG_COMPAT support

David Miller <davem@...emloft.net> wrote:
> From: Florian Westphal <fw@...len.de>
> Date: Fri, 5 Feb 2010 20:54:09 +0100
> 
> > However, I believe I can use is_compat_task() on
> > the userspace -> kernel side to figure out how to interpret
> > the incoming data.
> > 
> > Is that correct or did I misunderstand?
> 
> Again, you can't use is_compat_task().

Okay, understood. Thanks for clarifying.

> Just like netlink_recvmsg() you should use MSG_CMSG_COMPAT.
> 
> If it isn't be set correctly, you need to find out why.

Will do, thanks.
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