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linux/drivers/xen
David Vrabel aa24411b67 xen/balloon: account for pages released during memory setup
In xen_memory_setup() pages that occur in gaps in the memory map are
released back to Xen.  This reduces the domain's current page count in
the hypervisor.  The Xen balloon driver does not correctly decrease
its initial current_pages count to reflect this.  If 'delta' pages are
released and the target is adjusted the resulting reservation is
always 'delta' less than the requested target.

This affects dom0 if the initial allocation of pages overlaps the PCI
memory region but won't affect most domU guests that have been setup
with pseudo-physical memory maps that don't have gaps.

Fix this by accouting for the released pages when starting the balloon
driver.

If the domain's targets are managed by xapi, the domain may eventually
run out of memory and die because xapi currently gets its target
calculations wrong and whenever it is restarted it always reduces the
target by 'delta'.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-09-29 11:12:09 -04:00
..
xen-pciback xen/pciback: remove duplicated #include 2011-08-03 14:34:52 -04:00
xenbus xen: Add module alias to autoload backend drivers 2011-06-30 12:15:33 -04:00
xenfs
balloon.c xen/balloon: account for pages released during memory setup 2011-09-29 11:12:09 -04:00
biomerge.c
cpu_hotplug.c
events.c xen/irq: Alter the locking to use a mutex instead of a spinlock. 2011-09-15 04:32:02 -04:00
evtchn.c treewide: remove extra semicolons 2011-04-10 17:01:05 +02:00
features.c
gntalloc.c
gntdev.c Merge branches 'stable/backend.base.v3' and 'stable/gntalloc.v7' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2011-05-19 16:14:25 -07:00
grant-table.c xen/grant: Fix compile warning. 2011-08-03 14:34:53 -04:00
Kconfig xen/self-balloon: Add dependency on tmem. 2011-08-03 14:34:57 -04:00
Makefile Merge branch 'stable/xen-pciback-0.6.3' into stable/drivers 2011-07-20 15:33:51 -04:00
manage.c PM: Remove sysdev suspend, resume and shutdown operations 2011-05-11 21:37:15 +02:00
pci.c
platform-pci.c
swiotlb-xen.c Merge branch 'stable/xen-swiotlb.bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6 2011-06-09 12:52:44 -07:00
sys-hypervisor.c drivers/xen/sys-hypervisor: Cleanup code/data sections definitions 2011-05-19 11:30:41 -04:00
tmem.c xen: prepare tmem shim to handle frontswap 2011-06-17 15:06:20 -06:00
xen-balloon.c xen: tmem: self-ballooning and frontswap-selfshrinking 2011-07-08 12:26:21 -06:00
xen-selfballoon.c xen: xen-selfballoon.c needs more header files 2011-08-10 15:21:46 -04:00
xencomm.c