summaryrefslogtreecommitdiff
path: root/mm/memory_hotplug.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 124e794867c5..519f9db063ff 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -96,10 +96,16 @@ void mem_hotplug_done(void)
cpus_read_unlock();
}
+u64 max_mem_size = U64_MAX;
+
/* add this memory to iomem resource */
static struct resource *register_memory_resource(u64 start, u64 size)
{
struct resource *res, *conflict;
+
+ if (start + size > max_mem_size)
+ return ERR_PTR(-E2BIG);
+
res = kzalloc(sizeof(struct resource), GFP_KERNEL);
if (!res)
return ERR_PTR(-ENOMEM);