[PATCH] ppc64: support 64k pages

[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / mm / init_64.c

diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index b0fc822ec29f5b660825315a260317bd1a4e9114..dfe7fa37b41a16835b629964d2b21faefe2d97b9 100644 (file)
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -188,12 +188,21 @@ static void zero_ctor(void *addr, kmem_cache_t *cache, unsigned long flags)
        memset(addr, 0, kmem_cache_size(cache));
 }
 
+#ifdef CONFIG_PPC_64K_PAGES
+static const int pgtable_cache_size[2] = {
+       PTE_TABLE_SIZE, PGD_TABLE_SIZE
+};
+static const char *pgtable_cache_name[ARRAY_SIZE(pgtable_cache_size)] = {
+       "pte_pmd_cache", "pgd_cache",
+};
+#else
 static const int pgtable_cache_size[2] = {
        PTE_TABLE_SIZE, PMD_TABLE_SIZE
 };
 static const char *pgtable_cache_name[ARRAY_SIZE(pgtable_cache_size)] = {
        "pgd_pte_cache", "pud_pmd_cache",
 };
+#endif /* CONFIG_PPC_64K_PAGES */
 
 kmem_cache_t *pgtable_cache[ARRAY_SIZE(pgtable_cache_size)];
 
@@ -201,19 +210,14 @@ void pgtable_cache_init(void)
 {
        int i;
 
-       BUILD_BUG_ON(PTE_TABLE_SIZE != pgtable_cache_size[PTE_CACHE_NUM]);
-       BUILD_BUG_ON(PMD_TABLE_SIZE != pgtable_cache_size[PMD_CACHE_NUM]);
-       BUILD_BUG_ON(PUD_TABLE_SIZE != pgtable_cache_size[PUD_CACHE_NUM]);
-       BUILD_BUG_ON(PGD_TABLE_SIZE != pgtable_cache_size[PGD_CACHE_NUM]);
-
        for (i = 0; i < ARRAY_SIZE(pgtable_cache_size); i++) {
                int size = pgtable_cache_size[i];
                const char *name = pgtable_cache_name[i];
 
                pgtable_cache[i] = kmem_cache_create(name,
                                                     size, size,
-                                                    SLAB_HWCACHE_ALIGN
-                                                    | SLAB_MUST_HWCACHE_ALIGN,
+                                                    SLAB_HWCACHE_ALIGN |
+                                                    SLAB_MUST_HWCACHE_ALIGN,
                                                     zero_ctor,
                                                     NULL);
                if (! pgtable_cache[i])