Added a comment about why we are copying the passed in kernel args.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7274 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/core/main.c

@@ -58,6 +58,7 @@ _start(kernel_args *oldka, int cpu_num)
 	kernel_startup = true;
 
 	memcpy(&ka, oldka, sizeof(kernel_args));
+		// the passed in kernel args are in a non-allocated range of memory
 
 	smp_set_num_cpus(ka.num_cpus);