Fix for 32-bit ARM kernels that are configured with CONFIG_SLAB

and contain percpu array_cache structures that were allocated with
vmalloc().  Without the patch, during session initialization there
will be error messages of the form: "crash: kmem_cache: <vaddr>:
invalid array_cache pointer: <vaddr>", and during runtime, the
"kmem -[sS]" commands will show kmem_cache lines that marked as
"[INVALID/CORRUPTED]".
(anderson@redhat.com)

arm.c

@@ -1539,6 +1539,7 @@ arm_dump_backtrace_entry(struct bt_info *bt, int level, ulong from, ulong sp)
 static ulong
 arm_vmalloc_start(void)
 {
+	machdep->machspec->vmalloc_start_addr = vt->high_memory;
 	return vt->high_memory;
 }