+#ifdef CONFIG_PPC_MM_SLICES
+static bool should_hash_preload(struct mm_struct *mm, unsigned long ea)
+{
+ int psize = get_slice_psize(mm, ea);
+
+ /* We only prefault standard pages for now */
+ if (unlikely(psize != mm->context.user_psize))
+ return false;
+
+ /*
+ * Don't prefault if subpage protection is enabled for the EA.
+ */
+ if (unlikely((psize == MMU_PAGE_4K) && subpage_protection(mm, ea)))
+ return false;
+
+ return true;
+}
+#else
+static bool should_hash_preload(struct mm_struct *mm, unsigned long ea)
+{
+ return true;
+}
+#endif
+