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Diffstat (limited to 'drivers/xen/Kconfig')
| -rw-r--r-- | drivers/xen/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 61212fc7f0c7..727f11eb46b2 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -13,12 +13,16 @@ config XEN_BALLOON config XEN_BALLOON_MEMORY_HOTPLUG bool "Memory hotplug support for Xen balloon driver" depends on XEN_BALLOON && MEMORY_HOTPLUG + default y help Memory hotplug support for Xen balloon driver allows expanding memory available for the system above limit declared at system startup. It is very useful on critical systems which require long run without rebooting. + It's also very useful for non PV domains to obtain unpopulated physical + memory ranges to use in order to map foreign memory or grants. + Memory could be hotplugged in following steps: 1) target domain: ensure that memory auto online policy is in |