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

To: Andy Lutomirski <luto@amacapital.net>, Alexei Starovoitov <alexei.starovoitov@gmail.com>
Subject: Re: [RFC 5/5] x86,seccomp: Add a seccomp fastpath
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Wed, 11 Jun 2014 15:18:02 -0700
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Kees Cook <keescook@chromium.org>, Will Drewry <wad@chromium.org>, Oleg Nesterov <oleg@redhat.com>, X86 ML <x86@kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, linux-mips@linux-mips.org, linux-arch <linux-arch@vger.kernel.org>, LSM List <linux-security-module@vger.kernel.org>
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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



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