From 50c7203cc101403cd78e5d322a5a39f855e54d77 Mon Sep 17 00:00:00 2001
From: Juergen Gross <jgross@suse.com>
Date: Mon, 8 Aug 2016 10:28:29 +0200
Subject: [PATCH] tools: add config parameter for maximum memory of xenstore
 domain

Add a parameter to xencommons configuration file for specifying the
maximum memory size of the xenstore domain.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 tools/hotplug/Linux/init.d/sysconfig.xencommons.in | 11 +++++++++++
 tools/hotplug/Linux/launch-xenstore.in             |  1 +
 2 files changed, 12 insertions(+)

diff --git a/tools/hotplug/Linux/init.d/sysconfig.xencommons.in b/tools/hotplug/Linux/init.d/sysconfig.xencommons.in
index cc8185c172..92569cd61b 100644
--- a/tools/hotplug/Linux/init.d/sysconfig.xencommons.in
+++ b/tools/hotplug/Linux/init.d/sysconfig.xencommons.in
@@ -69,6 +69,17 @@ XENSTORED_ARGS=
 # Only evaluated if XENSTORETYPE is "domain".
 #XENSTORE_DOMAIN_SIZE=8
 
+## Type: string
+## Default: not set, no autoballooning of xenstore domain
+#
+# Maximum xenstore domain memory size. Can be specified as:
+# - plain integer value for max size in MiB
+# - fraction of host memory, e.g. 1/100
+# - combination of both in form of <val>:<frac> (e.g. 8:1/100), resulting
+#   value will be the higher of both specifications
+# Only evaluated if XENSTORETYPE is "domain".
+#XENSTORE_MAX_DOMAIN_SIZE=
+
 ## Type: string
 ## Default: ""
 #
diff --git a/tools/hotplug/Linux/launch-xenstore.in b/tools/hotplug/Linux/launch-xenstore.in
index 46defd6f43..01193be349 100644
--- a/tools/hotplug/Linux/launch-xenstore.in
+++ b/tools/hotplug/Linux/launch-xenstore.in
@@ -75,6 +75,7 @@ test -f @CONFIG_DIR@/@CONFIG_LEAF_DIR@/xencommons && . @CONFIG_DIR@/@CONFIG_LEAF
 	XENSTORE_DOMAIN_ARGS="$XENSTORE_DOMAIN_ARGS --kernel $XENSTORE_DOMAIN_KERNEL"
 	[ -z "$XENSTORE_DOMAIN_SIZE" ] && XENSTORE_DOMAIN_SIZE=8
 	XENSTORE_DOMAIN_ARGS="$XENSTORE_DOMAIN_ARGS --memory $XENSTORE_DOMAIN_SIZE"
+	[ -z "$XENSTORE_MAX_DOMAIN_SIZE" ] || XENSTORE_DOMAIN_ARGS="$XENSTORE_DOMAIN_ARGS --maxmem $XENSTORE_MAX_DOMAIN_SIZE"
 
 	echo -n Starting $XENSTORE_DOMAIN_KERNEL...
 	${LIBEXEC_BIN}/init-xenstore-domain $XENSTORE_DOMAIN_ARGS || exit 1
-- 
2.30.2