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Re: [Xen-devel] [PATCH 13/28] libxl: idl: add domain_type field to libxl_dominfo struct


  • To: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
  • From: Rob Hoes <Rob.Hoes@xxxxxxxxxx>
  • Date: Tue, 23 Apr 2013 14:10:51 +0100
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
  • Delivery-date: Tue, 23 Apr 2013 13:12:03 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>
  • Thread-index: Ac42pn0vuYAdiSSyTtOUIXnjDLP8QQJfG+Dw
  • Thread-topic: [PATCH 13/28] libxl: idl: add domain_type field to libxl_dominfo struct

> On Mon, 2013-03-25 at 14:45 +0000, Rob Hoes wrote:
> > This allows a toolstack to find out whether a VM has booted as PV or
> > HVM.
> 
> OOI why do you need to know? I'm wondering if there might be a better
> higher level question to ask rather than PV vs HVM.

One reason is simply to report to the user what kind of VMs they have running. 
Xenopsd also uses this information internally in some places, e.g. when 
inserting a CD, it uses libxl_cdrom_insert for HVMs, and does a normal VBD 
hotplug for PV.

Cheers,
Rob
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