From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: A simple question of CPU emulation in Xen Date: Fri, 13 May 2011 15:51:10 +0100 Message-ID: <20110513155110.56ca976c@lxorguk.ukuu.org.uk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: MaoXiaoyun Cc: xen devel List-Id: xen-devel@lists.xenproject.org On Fri, 13 May 2011 22:41:44 +0800 MaoXiaoyun wrote: > > Hi : > > I have a simple question on CPU emulation in Xen. > > Currently, inside guest, we can see that the CPU information incluing types and frequency is exactly > same as physical CPU. Is it possible for Xen(or qemu) to emulate a different type of CPU. That is inside > guest, we see a different CPU types? Qemu supports a huge range of CPU and platform emulations, www.qemu.org. Most of this falls outside of Xen as Qemu doesn't need or benefit from Xen or KVM when doing cross cpu emulation.