Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965065AbVLHFiw (ORCPT ); Thu, 8 Dec 2005 00:38:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965080AbVLHFiv (ORCPT ); Thu, 8 Dec 2005 00:38:51 -0500 Received: from cantor.suse.de ([195.135.220.2]:44458 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S965065AbVLHFiu (ORCPT ); Thu, 8 Dec 2005 00:38:50 -0500 To: Dave Hansen Cc: "SERGE E. HALLYN [imap]" , Linux Kernel Mailing List , Hubertus Franke , Paul Jackson Subject: Re: [RFC] [PATCH 00/13] Introduce task_pid api References: <20051114212341.724084000@sergelap> <1133977623.24344.31.camel@localhost> <1133991650.30387.17.camel@localhost> <1133994685.30387.47.camel@localhost> From: Andi Kleen Date: 08 Dec 2005 03:09:11 -0700 In-Reply-To: <1133994685.30387.47.camel@localhost> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1084 Lines: 20 Dave Hansen writes: > > Can you think of any? qemu can afaik. I've also heard about simnow in qemu and Xen in qemu, although that's not true recursion. And VMware/qemu/ simnow/UML/... will all probably run fine in Xen native guests. I wouldn't be surprised if UML supported true recursion too. But then for what do you really need recursion? It might be nice theory, but in practice it's probably not too relevant. I guess it was useful long ago for debugging VM itself when mainframes were really expensive so you couldn't just buy a development machine and test your VM on raw iron. But that's not really true today anymore. Ok one weak reason to still use it might be if your test machine takes too long to reboot. But then Hypervisor hackers are a pretty narrow target group for features like this. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/