From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.30) id 1B3iPN-0006S0-6i for qemu-devel@nongnu.org; Wed, 17 Mar 2004 16:17:01 -0500 Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.30) id 1B3iO3-0005QX-HR for qemu-devel@nongnu.org; Wed, 17 Mar 2004 16:16:11 -0500 Received: from [193.252.22.21] (helo=mwinf1004.wanadoo.fr) by monty-python.gnu.org with esmtp (Exim 4.30) id 1B3iMJ-0003yD-AX for qemu-devel@nongnu.org; Wed, 17 Mar 2004 16:13:51 -0500 Received: from bellard.org (ATuileries-112-1-3-137.w81-48.abo.wanadoo.fr [81.48.134.137]) by mwinf1004.wanadoo.fr (SMTP Server) with ESMTP id 61CE71800CBC for ; Wed, 17 Mar 2004 22:13:34 +0100 (CET) Message-ID: <4058BFD6.1030200@bellard.org> Date: Wed, 17 Mar 2004 22:15:02 +0100 From: Fabrice Bellard MIME-Version: 1.0 Subject: Re: [Qemu-devel] x86-64 port References: <200403181832.59188.nick@mccomputing.co.uk> In-Reply-To: <200403181832.59188.nick@mccomputing.co.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Nick Snellock wrote: > Is anyone working on an x86-64 port? Not me :-) An x86-64 host port would be very interesting because the 64 bit host MMU could be used to remap the whole emulated 4GB address space. I think that there is also a lot of potential for a "code-copy" mode converting x86-32 to x86-64 code (look at what I did for . Along with the 4GB space remapping, it would give close to native performances without requiring any potentially unsafe kernel module (unlike the popular virtualizers). Fabrice.