From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751398AbWGLVrM (ORCPT ); Wed, 12 Jul 2006 17:47:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751440AbWGLVrM (ORCPT ); Wed, 12 Jul 2006 17:47:12 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:29623 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1751398AbWGLVrL (ORCPT ); Wed, 12 Jul 2006 17:47:11 -0400 Subject: Re: [2.6 patch] let CONFIG_SECCOMP default to n From: Alan Cox To: andrea@cpushare.com Cc: ajwade@cpe001346162bf9-cm0011ae8cd564.cpe.net.cable.rogers.com, Lee Revell , "Randy.Dunlap" , Andrew Morton , bunk@stusta.de, linux-kernel@vger.kernel.org, mingo@elte.hu In-Reply-To: <20060712210545.GB24367@opteron.random> References: <20060629192121.GC19712@stusta.de> <200607102159.11994.ajwade@cpe001346162bf9-cm0011ae8cd564.cpe.net.cable.rogers.com> <20060711041600.GC7192@opteron.random> <200607111619.37607.ajwade@cpe001346162bf9-cm0011ae8cd564.cpe.net.cable.rogers.com> <20060712210545.GB24367@opteron.random> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Wed, 12 Jul 2006 23:02:56 +0100 Message-Id: <1152741776.22943.103.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ar Mer, 2006-07-12 am 23:05 +0200, ysgrifennodd andrea@cpushare.com: > Measuring time through the network currently is impractical, the rtt is > too huge for that (though perhaps 10 years from now we'll have to > rethink about this). Actually measuring time through the network is extremely doable given enough samples as is communication through delay perturbation. A good viterbi encoder/decoder will fish a signal out of very high noise. Yes you pay a lot in data rate at that point but it works. Anyway at the point you pass the bytecode through a processing filter you don't need SECCOMP because your filter can remove any syscall attempts. Alan