conf: Add support for parsing and formatting max memory and slot count

Add a XML element that will allow to specify maximum supportable memory
and the count of memory slots to use with memory hotplug.

To avoid possible confusion and misuse of the new element this patch
also explicitly forbids the use of the maxMemory setting in individual
drivers's post parse callbacks. This limitation will be lifted when the
support is implemented.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 27731f20bc..bdfc12e8e7 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -444,10 +444,14 @@ umlDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
 
 
 static int
-umlDomainDefPostParse(virDomainDefPtr def ATTRIBUTE_UNUSED,
+umlDomainDefPostParse(virDomainDefPtr def,
                       virCapsPtr caps ATTRIBUTE_UNUSED,
                       void *opaque ATTRIBUTE_UNUSED)
 {
+    /* memory hotplug tunables are not supported by this driver */
+    if (virDomainDefCheckUnsupportedMemoryHotplug(def) < 0)
+        return -1;
+
     return 0;
 }