Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath

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To: Andy Lutomirski <luto@xxxxxxxxxxxxxx>, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Subject: Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Wed, 11 Jun 2014 15:18:02 -0700
Cc: "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Will Drewry <wad@xxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, X86 ML <x86@xxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, linux-mips@xxxxxxxxxxxxxx, linux-arch <linux-arch@xxxxxxxxxxxxxxx>, LSM List <linux-security-module@xxxxxxxxxxxxxxx>
In-reply-to: <CALCETrXoqqKC=T5Wvj+CDYQFte1s_=npDvQ2UYW0j=AanEgR1g@mail.gmail.com>
Original-recipient: rfc822;linux-mips@xxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

On 06/11/2014 02:56 PM, Andy Lutomirski wrote:
> 
> 13ns is with the simplest nonempty filter.  I hope that empty filters
> don't work.
> 

Why wouldn't they?

	-hpa

Follow-Ups:
- Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath
  - From: Andy Lutomirski

References:
- [RFC 0/5] Two-phase seccomp and an x86_64 fast path
  - From: Andy Lutomirski
- [RFC 5/5] x86,seccomp: Add a seccomp fastpath
  - From: Andy Lutomirski
- Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath
  - From: Alexei Starovoitov
- Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath
  - From: Andy Lutomirski

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