netdev - Re: [PATCH v12 net-next 03/11] bpf: add lookup/update/delete/iterate methods to BPF maps

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Message-Id: <20140916.174901.2174503796369572537.davem@davemloft.net>
Date:	Tue, 16 Sep 2014 17:49:01 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ast@...mgrid.com
Cc:	mingo@...nel.org, torvalds@...ux-foundation.org,
	luto@...capital.net, dborkman@...hat.com,
	hannes@...essinduktion.org, chema@...gle.com, edumazet@...gle.com,
	a.p.zijlstra@...llo.nl, pablo@...filter.org, hpa@...or.com,
	akpm@...ux-foundation.org, keescook@...omium.org,
	linux-api@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 net-next 03/11] bpf: add
 lookup/update/delete/iterate methods to BPF maps

From: Alexei Starovoitov <ast@...mgrid.com>
Date: Tue, 16 Sep 2014 14:23:27 -0700

> no compat layer and type checking will be done
> by syscall wrappers. Ok?

Why are you against using strong typing just for everything other
than the user pointer blobs?

I don't understand the resistence to my suggestion to just use
aligned_u64 instead of "void __user *" in the union members.
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