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[Xen-devel] implementing memory ballooning in WIndows


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Wed, 3 Jun 2009 20:56:57 +1000
  • Delivery-date: Wed, 03 Jun 2009 03:57:53 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcnkOgN/Aj0r4M/lTyWtewBB0ZxblQ==
  • Thread-topic: implementing memory ballooning in WIndows

Do the Citrix Windows PV drivers implement memory ballooning? I've been
looking at this a bit for GPLPV and the avenues I can see are:

1. Memory can be added via ACPI hot-add, but I assume that that isn't
implemented in the GPL qemu code (or is it?) and only works for Windows
Server Enterprise, not Vista, XP, or Server Standard.
2. I can give memory back via just allocating a physical page and giving
it back to Xen

Assuming that #1 is undesirable for the reasons stated above, does
anyone have any starting point? Is there a document describing how
dynamic memory works with HVM domains?

Thanks

James

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