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xen: expand BALLOON_MEMORY_HOTPLUG description 

To mention it's also useful for PVH or HVM domains that require
mapping foreign memory or grants.

[boris: "non PV" instead of "translated" at Juergen's request]

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20200324150015.50496-1-roger.pau@citrix.com
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Roger Pau Monne 2020-03-24 16:00:14 +01:00 committed by Boris Ostrovsky
parent 5333875301
commit 0df683ff74
1 changed files with 3 additions and 0 deletions
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drivers/xen/Kconfig
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@ -19,6 +19,9 @@ config XEN_BALLOON_MEMORY_HOTPLUG
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