diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 9d704d9..4356ceb 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -456,6 +456,13 @@
 {
 	int codesize, reservedpages, datasize, initsize;
 
+	/* Do sanity checks on page table constants */
+	BUILD_BUG_ON(PTE_ENTRY_SIZE != sizeof(pte_t));
+	BUILD_BUG_ON(PMD_ENTRY_SIZE != sizeof(pmd_t));
+	BUILD_BUG_ON(PGD_ENTRY_SIZE != sizeof(pgd_t));
+	BUILD_BUG_ON(PAGE_SHIFT + BITS_PER_PTE + BITS_PER_PMD + BITS_PER_PGD
+			> BITS_PER_LONG);
+
 	high_memory = __va((max_pfn << PAGE_SHIFT));
 
 #ifndef CONFIG_DISCONTIGMEM