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Groups > linux.kernel > #1191753

[PATCHv2 00/10] mm, xen/balloon: memory hotplug improvements

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The series improves the use of hotplug memory in the Xen balloon
driver.

- Reliably find a non-conflicting location for the hotplugged memory
  (this fixes memory hotplug in a number of cases, particularly in
  dom0).

- Use hotplugged memory for alloc_xenballooned_pages() (keeping more
  memory available for the domain and reducing fragmentation of the
  p2m).

Changes in v2:
- New BP_WAIT state to signal the balloon process to wait for
  userspace to online the new memory.
- Preallocate P2M entries in alloc_xenballooned_pages() so they do not
  need allocated later (in a context where GFP_KERNEL allocations are
  not possible).

David
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[PATCHv2 00/10] mm, xen/balloon: memory hotplug improvements David Vrabel <david.vrabel@citrix.com> - 2015-07-24 13:50 +0200
  [PATCHv2 07/10] xen/balloon: make alloc_xenballoon_pages() always allocate low pages David Vrabel <david.vrabel@citrix.com> - 2015-07-24 13:50 +0200
  [PATCHv2 09/10] x86/xen: export xen_alloc_p2m_entry() David Vrabel <david.vrabel@citrix.com> - 2015-07-24 14:00 +0200
  [PATCHv2 04/10] xen/balloon: find non-conflicting regions to place hotplugged memory David Vrabel <david.vrabel@citrix.com> - 2015-07-24 14:00 +0200
  [PATCHv2 10/10] xen/balloon: pre-allocate p2m entries for ballooned pages David Vrabel <david.vrabel@citrix.com> - 2015-07-24 14:20 +0200
    Re: [Xen-devel] [PATCHv2 10/10] xen/balloon: pre-allocate p2m entries  for ballooned pages David Vrabel <david.vrabel@citrix.com> - 2015-07-27 11:40 +0200

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