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linux/drivers/xen
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David Vrabel 1cf6a6c829 xen/balloon: use hotplugged pages for foreign mappings etc. 
alloc_xenballooned_pages() is used to get ballooned pages to back
foreign mappings etc.  Instead of having to balloon out real pages,
use (if supported) hotplugged memory.

This makes more memory available to the guest and reduces
fragmentation in the p2m.

This is only enabled if the xen.balloon.hotplug_unpopulated sysctl is
set to 1.  This sysctl defaults to 0 in case the udev rules to
automatically online hotplugged memory do not exist.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
v3:
- Add xen.balloon.hotplug_unpopulated sysctl to enable use of hotplug
  for unpopulated pages.
2015-10-23 14:20:05 +01:00
..
events xen: MFN/GFN/BFN terminology changes for 4.3-rc0 2015-09-10 16:21:11 -07:00
xen-pciback xen-pciback: Add name prefix to global 'permissive' variable 2015-04-29 17:34:50 +01:00
xenbus xen/balloon: make alloc_xenballoon_pages() always allocate low pages 2015-10-23 14:20:05 +01:00
xenfs xen: xensyms support 2015-08-20 12:24:25 +01:00
acpi.c xen / ACPI: notify xen when reduced hardware sleep is available 2013-07-31 14:22:35 +02:00
balloon.c xen/balloon: use hotplugged pages for foreign mappings etc. 2015-10-23 14:20:05 +01:00
biomerge.c xen: Make clear that swiotlb and biomerge are dealing with DMA address 2015-09-08 17:10:52 +01:00
cpu_hotplug.c xen: Convert printks to pr_<level> 2013-06-28 11:19:58 -04:00
dbgp.c xen: Use dev_is_pci() to check whether it is pci device 2014-01-07 09:53:33 -05:00
efi.c efi: dmi: add support for SMBIOS 3.0 UEFI configuration table 2014-11-05 09:03:16 +01:00
evtchn.c xen/evtchn: support more than 4096 ports 2014-01-06 10:07:50 -05:00
fallback.c xen-pciback: notify hypervisor about devices intended to be assigned to guests 2013-03-22 10:20:55 -04:00
features.c
gntalloc.c Merge branch 'akpm' (patches from Andrew) 2015-09-10 18:19:42 -07:00
gntdev.c mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
grant-table.c xen/balloon: make alloc_xenballoon_pages() always allocate low pages 2015-10-23 14:20:05 +01:00
Kconfig xen/PMU: Sysfs interface for setting Xen PMU mode 2015-08-20 12:24:26 +01:00
Makefile Initial ACPI support for arm64: 2015-04-24 08:23:45 -07:00
manage.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
mcelog.c xen/mce: fix up xen_late_init_mcelog() error handling 2015-03-16 14:49:15 +00:00
pci.c xen/pci: Try harder to get PXM information for Xen 2015-04-15 10:57:28 +01:00
pcpu.c xen: pcpu: Use static attribute groups for sysfs entry 2015-03-16 14:49:13 +00:00
platform-pci.c drivers: xen: Mark function as static in platform-pci.c 2014-02-28 15:26:04 -05:00
preempt.c xen/preempt: use need_resched() instead of should_resched() 2015-08-20 12:24:14 +01:00
privcmd.c xen/balloon: make alloc_xenballoon_pages() always allocate low pages 2015-10-23 14:20:05 +01:00
privcmd.h
swiotlb-xen.c Merge branch 'akpm' (patches from Andrew) 2015-09-10 18:19:42 -07:00
sys-hypervisor.c xen/PMU: Sysfs interface for setting Xen PMU mode 2015-08-20 12:24:26 +01:00
tmem.c xen/tmem: Use xen_page_to_gfn rather than pfn_to_gfn 2015-09-08 18:03:52 +01:00
xen-acpi-cpuhotplug.c Xen / ACPI / processor: Remove unneeded NULL check 2015-05-13 23:28:15 +02:00
xen-acpi-memhotplug.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
xen-acpi-pad.c ACPI / PAD / xen: use acpi_evaluate_ost() to replace open-coded version 2014-02-21 00:27:47 +01:00
xen-acpi-processor.c ACPI / processor: Drop an unused argument of a cleanup routine 2015-07-22 22:11:16 +02:00
xen-balloon.c xen: balloon: Use static attribute groups for sysfs entries 2015-03-16 14:49:13 +00:00
xen-scsiback.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
xen-selfballoon.c drivers:xen-selfballoon:reset 'frontswap_inertia_counter' after frontswap_shrink 2014-02-28 15:26:12 -05:00
xen-stub.c xen/acpi: remove redundant acpi/acpi_drivers.h include 2013-03-11 13:53:02 -04:00
xlate_mmu.c xen/privcmd: Further s/MFN/GFN/ clean-up 2015-09-08 18:03:54 +01:00