Messages in this thread | | | From | David Vrabel <> | Subject | [PATCHv3 00/10] mm, xen/balloon: memory hotplug improvements | Date | Thu, 30 Jul 2015 18:03:02 +0100 |
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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 v3: - xen.balloon.hotplug_unpopulated sysctl to enable using hotplug to provide unpopulated (ballooned) pages. - Fix xen_alloc_p2m_entry() for auto-translated guests.
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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