linux-kernel - Re: [PATCH v3 0/4] exec: unify native/compat code

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Message-Id: <20110302.115411.183067873.davem@davemloft.net>
Date:	Wed, 02 Mar 2011 11:54:11 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	torvalds@...ux-foundation.org
Cc:	oleg@...hat.com, akpm@...ux-foundation.org,
	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, pageexec@...email.hu, solar@...nwall.com,
	eteo@...hat.com, spender@...ecurity.net, roland@...hat.com,
	miltonm@....com
Subject: Re: [PATCH v3 0/4] exec: unify native/compat code

From: Linus Torvalds <torvalds@...ux-foundation.org>
Date: Wed, 2 Mar 2011 11:48:03 -0800

> Well, the thing is, on architectures that _can_ pass by value, it
> avoids one indirection.
> 
> And if you do pass it on stack, then the code generated will be the
> same as if we passed a pointer. So sparc may not be able to take
> advantage of the optimization, but I don't think the code generation
> would be worse.

That's a good point, the situation here is different than the page table
one.
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