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Re: [Xen-devel] How to detect HAP from DomU?
| To: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, Juergen Gross <juergen.gross@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] How to detect HAP from DomU? |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Wed, 10 Nov 2010 08:50:22 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 10 Nov 2010 00:52:03 -0800 |
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| Thread-topic: | [Xen-devel] How to detect HAP from DomU? |
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On 10/11/2010 08:44, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote: >>> You could do a few remaps and copies and see how long it takes? Has the >>> advantage that you aren't tied up to one policy based on one system's >>> timings for those particuler ops. I don't think basing policy on static >>> assumptions about hidden implementation features is a good idea. >> >> Okay, that's a good idea. >> I'm going this way. > > Will this works for Live Migration? After LM, your previous check will be > invalid. (Can we migrate between system w/wo HAP?) > Or you can check after each LM. Yeah, you'd have to do that regardless of how you make the copy/remap decision. Well, unless your migration pool is homogeneous, which it ought to be in many cases. Anyhow, if the guest has PV drivers then you get a migration callback and you can hook off that easy enough. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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