From: Roger Pau Monne Date: Tue, 24 Mar 2020 15:00:14 +0000 (+0100) Subject: xen: expand BALLOON_MEMORY_HOTPLUG description X-Git-Tag: v5.8-rc1~32^2~5 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0df683ff7456eb6401c9035c054b7a58c93dd215;p=thirdparty%2Fkernel%2Flinux.git 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 Link: https://lore.kernel.org/r/20200324150015.50496-1-roger.pau@citrix.com Reviewed-by: Juergen Gross Signed-off-by: Boris Ostrovsky --- diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 61212fc7f0c70..ce024e57274c9 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -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