conf: Fix up balloon size after removing a memory device from def

To avoid having the ballooned memory size larger than the actual
physical memory size, truncate the ballooned size if it overflows.

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 334283d70fb0a19b0abda5c3a7e421b674543aa4..e3e0f637d50fb61a32acaff38fc880b7b4b15945 100644 (file)
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12988,6 +12988,11 @@ virDomainMemoryRemove(virDomainDefPtr def,
 {
     virDomainMemoryDefPtr ret = def->mems[idx];
     VIR_DELETE_ELEMENT(def->mems, idx, def->nmems);
+
+    /* fix up balloon size */
+    if (def->mem.cur_balloon > virDomainDefGetMemoryActual(def))
+        def->mem.cur_balloon = virDomainDefGetMemoryActual(def);
+
     return ret;
 }