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[Xen-devel] GPLPV memory ballooning and x32

  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Sun, 23 May 2010 19:11:02 +1000
  • Delivery-date: Sun, 23 May 2010 02:11:57 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acr6V92rFAkNlE8LRFKIrcdQAdP+oA==
  • Thread-topic: GPLPV memory ballooning and x32

Are there any known reasons why ballooning might not work under Xen
3.1.x for a 32 bit Windows DomU?

I've implemented ballooning in GPLPV and it works under Windows 2008 x32
in my testing, but one user is reporting problems. I don't know much
about the details yet but if it just doesn't work under 3.1.x then
upgrading is the only outcome.

I'm using XENMEM_decrease_reservation to give pages back to xen, and
XENMEM_populate_physmap to fill the 'holes' back in with real memory
when the domU wants to balloon up again.



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