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| author | Roger Pau Monne <roger.pau@citrix.com> | 2020-03-24 16:00:15 +0100 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2020-05-22 01:11:03 +0200 |
| commit | 2abb65a39bcca0629437bb83e583889f9e1ad696 (patch) | |
| tree | 8e01b1ca7edf4f5ba6ed959ee4784d5de95179f1 /drivers/xen/Kconfig | |
| parent | xen: expand BALLOON_MEMORY_HOTPLUG description (diff) | |
| download | linux-2abb65a39bcca0629437bb83e583889f9e1ad696.tar.xz linux-2abb65a39bcca0629437bb83e583889f9e1ad696.zip | |
xen: enable BALLOON_MEMORY_HOTPLUG by default
Without it a PVH dom0 is mostly useless, as it would balloon down huge
amounts of RAM in order get physical address space to map foreign
memory and grants, ultimately leading to an out of memory situation.
Such option is also needed for HVM or PVH driver domains, since they
also require mapping grants into physical memory regions.
Suggested-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20200324150015.50496-2-roger.pau@citrix.com
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen/Kconfig')
| -rw-r--r-- | drivers/xen/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index ce024e57274c..727f11eb46b2 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -13,6 +13,7 @@ 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. |