path: root/arch/parisc/mm/init.c
diff options
Diffstat (limited to 'arch/parisc/mm/init.c')
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 82f364e209f..3ac462de53a 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -33,6 +33,18 @@
extern int data_start;
+#if PT_NLEVELS == 3
+/* NOTE: This layout exactly conforms to the hybrid L2/L3 page table layout
+ * with the first pmd adjacent to the pgd and below it. gcc doesn't actually
+ * guarantee that global objects will be laid out in memory in the same order
+ * as the order of declaration, so put these in different sections and use
+ * the linker script to order them. */
+pmd_t pmd0[PTRS_PER_PMD] __attribute__ ((__section__ (".data..vm0.pmd"), aligned(PAGE_SIZE)));
+pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((__section__ (".data..vm0.pgd"), aligned(PAGE_SIZE)));
+pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((__section__ (".data..vm0.pte"), aligned(PAGE_SIZE)));
struct node_map_data node_data[MAX_NUMNODES] __read_mostly;
unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;