X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Finclude%2Fasm%2Fhighmem.h;h=545028f8648801ebf321fbcbdfdd987718434d40;hb=652e8f8d579d61745094e36b4ff085026a332e73;hp=91c589520c0aa65256f954c0fce003e37a527b5d;hpb=7b3b6e42032e94a6132a85642e95106f5346650e;p=deliverable%2Flinux.git

diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h
index 91c589520c0a..545028f86488 100644
--- a/arch/powerpc/include/asm/highmem.h
+++ b/arch/powerpc/include/asm/highmem.h
@@ -38,9 +38,24 @@ extern pte_t *pkmap_page_table;
  * easily, subsequent pte tables have to be allocated in one physical
  * chunk of RAM.
  */
-#define LAST_PKMAP 	(1 << PTE_SHIFT)
-#define LAST_PKMAP_MASK (LAST_PKMAP-1)
+/*
+ * We use one full pte table with 4K pages. And with 16K/64K/256K pages pte
+ * table covers enough memory (32MB/512MB/2GB resp.), so that both FIXMAP
+ * and PKMAP can be placed in a single pte table. We use 512 pages for PKMAP
+ * in case of 16K/64K/256K page sizes.
+ */
+#ifdef CONFIG_PPC_4K_PAGES
+#define PKMAP_ORDER	PTE_SHIFT
+#else
+#define PKMAP_ORDER	9
+#endif
+#define LAST_PKMAP	(1 << PKMAP_ORDER)
+#ifndef CONFIG_PPC_4K_PAGES
+#define PKMAP_BASE	(FIXADDR_START - PAGE_SIZE*(LAST_PKMAP + 1))
+#else
 #define PKMAP_BASE	((FIXADDR_START - PAGE_SIZE*(LAST_PKMAP + 1)) & PMD_MASK)
+#endif
+#define LAST_PKMAP_MASK	(LAST_PKMAP-1)
 #define PKMAP_NR(virt)  ((virt-PKMAP_BASE) >> PAGE_SHIFT)
 #define PKMAP_ADDR(nr)  (PKMAP_BASE + ((nr) << PAGE_SHIFT))
 
@@ -84,8 +99,8 @@ static inline void *kmap_atomic_prot(struct page *page, enum km_type type, pgpro
 #ifdef CONFIG_DEBUG_HIGHMEM
 	BUG_ON(!pte_none(*(kmap_pte-idx)));
 #endif
-	__set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot));
-	flush_tlb_page(NULL, vaddr);
+	__set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot), 1);
+	local_flush_tlb_page(NULL, vaddr);
 
 	return (void*) vaddr;
 }
@@ -113,7 +128,7 @@ static inline void kunmap_atomic(void *kvaddr, enum km_type type)
 	 * this pte without first remap it
 	 */
 	pte_clear(&init_mm, vaddr, kmap_pte-idx);
-	flush_tlb_page(NULL, vaddr);
+	local_flush_tlb_page(NULL, vaddr);
 #endif
 	pagefault_enable();
 }