sh: default to extended TLB support.
All SH-X2 and SH-X3 parts support an extended TLB mode, which has been
left as experimental since support was originally merged. Now that it's
had some time to stabilize and get some exposure to various platforms,
we can drop it as an option and default enable it across the board.
This is also good future proofing for newer parts that will drop support
for the legacy TLB mode completely.
This will also force 3-level page tables for all newer parts, which is
necessary both for the varying page sizes and larger memories.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/pgtable.c b/arch/sh/mm/pgtable.c
index e1bc548..6f21fb1 100644
--- a/arch/sh/mm/pgtable.c
+++ b/arch/sh/mm/pgtable.c
@@ -3,8 +3,7 @@
#define PGALLOC_GFP GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO
static struct kmem_cache *pgd_cachep;
-
-#ifdef CONFIG_PGTABLE_LEVELS_3
+#if PAGETABLE_LEVELS > 2
static struct kmem_cache *pmd_cachep;
#endif
@@ -22,7 +21,7 @@
pgd_cachep = kmem_cache_create("pgd_cache",
PTRS_PER_PGD * (1<<PTE_MAGNITUDE),
PAGE_SIZE, SLAB_PANIC, pgd_ctor);
-#ifdef CONFIG_PGTABLE_LEVELS_3
+#if PAGETABLE_LEVELS > 2
pmd_cachep = kmem_cache_create("pmd_cache",
PTRS_PER_PMD * (1<<PTE_MAGNITUDE),
PAGE_SIZE, SLAB_PANIC, NULL);
@@ -39,7 +38,7 @@
kmem_cache_free(pgd_cachep, pgd);
}
-#ifdef CONFIG_PGTABLE_LEVELS_3
+#if PAGETABLE_LEVELS > 2
void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
set_pud(pud, __pud((unsigned long)pmd));
@@ -54,4 +53,4 @@
{
kmem_cache_free(pmd_cachep, pmd);
}
-#endif /* CONFIG_PGTABLE_LEVELS_3 */
+#endif /* PAGETABLE_LEVELS > 2 */