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

[Alexei Starovoitov]

On Tue, Sep 16, 2014 at 2:49 PM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> From: Alexei Starovoitov <ast@xxxxxxxxxxxx>
> 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.

All these different variants are ok to me. There are pros and
cons to either approach. I'm not against strong typing.
I just thought it would be cleaner not to use 'union' and
was asking for opinion. That's all. Sure, I will keep 'union'
and only change pointers to __aligned_u64.
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