| To: | Steve Sapovits <steves06@xxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] PV Drivers for Windows |
| From: | Freddie Cash <fjwcash@xxxxxxxxx> |
| Date: | 2011年2月22日 21:17:20 -0800 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2011年2月22日 21:18:39 -0800 |
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On Tue, Feb 22, 2011 at 7:55 PM, Steve Sapovits <steves06@xxxxxxxxxxx> wrote: > On 2/22/2011 10:39 PM, Ciro Iriarte wrote: >> Hi, I've been using Xen for quite a while, but always with Linux >> ParaVirtual domUs. Recently somebody asked me about Windows support as >> domU on Xen, and I always had this doubt, are all the PV drivers de >> same?, I know there are at least three, the ones from Citrix, the VMDP >> from Novell and GPLPV drivers >> >> Are all of them compatible with Xen 4?, all of them provide the same >> functions/performance?, what's the general rule of thumb on this >> subject? > > To my knowledge, Windows guests only run in HVM mode, not as > paravirtualized guests. I have a Xen 4 environment (openSUSE > dom0) where I run a combination of Linux and Windows guests. > No issues with the Windows guests so far. Yes, Windows (and other non-Xen-aware OSes) must run in a hardware-assisted VM. However, once the OS is installed, you can add paravirt drivers for disk controller and network interfaces. These paravirt drivers will (at least in theory, YMMV) vastly out-perform the emulated drivers. Thus, you can get the best of both worlds: use any OS via HVM, but gain the benefits of paravirt I/O. -- Freddie Cash fjwcash@xxxxxxxxx _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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