From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HWwYI-0000MC-0k for qemu-devel@nongnu.org; Thu, 29 Mar 2007 11:28:38 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HWwYG-0000Jy-Lj for qemu-devel@nongnu.org; Thu, 29 Mar 2007 11:28:37 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HWwYG-0000Jo-Hp for qemu-devel@nongnu.org; Thu, 29 Mar 2007 10:28:36 -0500 Received: from mail.codesourcery.com ([65.74.133.4]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HWwVf-0002ul-3i for qemu-devel@nongnu.org; Thu, 29 Mar 2007 11:25:55 -0400 From: Paul Brook Subject: Re: [Qemu-devel] QEMU Alpha target Date: Thu, 29 Mar 2007 16:25:51 +0100 References: <20070317143730.1befbf94@neuling> <200703291608.26347.paul@codesourcery.com> <20070329151209.GA6635@miranda.arrow> In-Reply-To: <20070329151209.GA6635@miranda.arrow> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703291625.51752.paul@codesourcery.com> 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 On Thursday 29 March 2007 16:12, Stuart Brady wrote: > On Thu, Mar 29, 2007 at 04:08:25PM +0100, Paul Brook wrote: > > > There do seem to be a few people who'd like Alpha emulation for QEMU. > > > Obviously, you'd want to get dynamic translation working first. :-) > > > > > > OTOH, I'm now wondering which archs can support full virtualisation. > > > > Depends how you define "full virtualization". If you call kqemu full > > virtualization then you can do that on pretty much any CPU. > > I meant "meeting Popek and Goldberg's virtualisation requirements". In that case, I suspect most of them don't. x86 certainly doesn't. Recent VT/SVM extensions bring it close, but there are still problems. PPC and SPARC also have hypervisor extensions, which suggests the conventional instruction sets don't allow full virtualization. Paul