linux-kernel - Re: is avoiding compat ioctls possible?

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Message-Id: <20091027.204530.142024242.davem@davemloft.net>
Date:	Tue, 27 Oct 2009 20:45:30 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	airlied@...ux.ie
Cc:	airlied@...il.com, andi@...stfloor.org, arnd@...db.de,
	linux-kernel@...r.kernel.org, dri-devel@...ts.sourceforge.net
Subject: Re: is avoiding compat ioctls possible?

From: Dave Airlie <airlied@...ux.ie>
Date: Wed, 28 Oct 2009 03:43:07 +0000 (GMT)

> we already opencoded this (probably before it was macroisied or we just 
> pasted it), so the radeon one is buggy, I should just go and compat_* all 
> of these then and we should be all happy?

It should be, it's only working because:

1) A malicious userland hasn't put garbage in the upper bits for
   you yet.

2) Nobody has tested s390 yet :-)

Let's just not design non-portability into the code when we
have no strong reason to, ok? :-)
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