[PATCH] Additions to .data.read_mostly section

[linux-2.6] / arch / i386 / mm / init.c

diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 8766c771bb45371ab1f67e94112616ba86521a9e..2ebaf75f732e92e8e901ea408e490718794b8821 100644 (file)
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -191,16 +191,17 @@ static inline int page_kills_ppro(unsigned long pagenr)
 
 extern int is_available_memory(efi_memory_desc_t *);
 
-static inline int page_is_ram(unsigned long pagenr)
+int page_is_ram(unsigned long pagenr)
 {
        int i;
        unsigned long addr, end;
 
        if (efi_enabled) {
                efi_memory_desc_t *md;
+               void *p;
 
-               for (i = 0; i < memmap.nr_map; i++) {
-                       md = &memmap.map[i];
+               for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
+                       md = p;
                        if (!is_available_memory(md))
                                continue;
                        addr = (md->phys_addr+PAGE_SIZE-1) >> PAGE_SHIFT;
@@ -276,7 +277,9 @@ void __init one_highpage_init(struct page *page, int pfn, int bad_ppro)
                SetPageReserved(page);
 }
 
-#ifndef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
+extern void set_highmem_pages_init(int);
+#else
 static void __init set_highmem_pages_init(int bad_ppro)
 {
        int pfn;
@@ -284,9 +287,7 @@ static void __init set_highmem_pages_init(int bad_ppro)
                one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro);
        totalram_pages += totalhigh_pages;
 }
-#else
-extern void set_highmem_pages_init(int);
-#endif /* !CONFIG_DISCONTIGMEM */
+#endif /* CONFIG_FLATMEM */
 
 #else
 #define kmap_init() do { } while (0)
@@ -295,12 +296,13 @@ extern void set_highmem_pages_init(int);
 #endif /* CONFIG_HIGHMEM */
 
 unsigned long long __PAGE_KERNEL = _PAGE_KERNEL;
+EXPORT_SYMBOL(__PAGE_KERNEL);
 unsigned long long __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC;
 
-#ifndef CONFIG_DISCONTIGMEM
-#define remap_numa_kva() do {} while (0)
-#else
+#ifdef CONFIG_NUMA
 extern void __init remap_numa_kva(void);
+#else
+#define remap_numa_kva() do {} while (0)
 #endif
 
 static void __init pagetable_init (void)
@@ -347,11 +349,11 @@ static void __init pagetable_init (void)
         * All user-space mappings are explicitly cleared after
         * SMP startup.
         */
-       pgd_base[0] = pgd_base[USER_PTRS_PER_PGD];
+       set_pgd(&pgd_base[0], pgd_base[USER_PTRS_PER_PGD]);
 #endif
 }
 
-#if defined(CONFIG_PM_DISK) || defined(CONFIG_SOFTWARE_SUSPEND)
+#ifdef CONFIG_SOFTWARE_SUSPEND
 /*
  * Swap suspend & friends need this for resume because things like the intel-agp
  * driver might have split up a kernel 4MB mapping.
@@ -391,7 +393,7 @@ void zap_low_mappings (void)
 }
 
 static int disable_nx __initdata = 0;
-u64 __supported_pte_mask = ~_PAGE_NX;
+u64 __supported_pte_mask __read_mostly = ~_PAGE_NX;
 
 /*
  * noexec = on|off
@@ -525,7 +527,7 @@ static void __init set_max_mapnr_init(void)
 #else
        num_physpages = max_low_pfn;
 #endif
-#ifndef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_FLATMEM
        max_mapnr = num_physpages;
 #endif
 }
@@ -539,7 +541,7 @@ void __init mem_init(void)
        int tmp;
        int bad_ppro;
 
-#ifndef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_FLATMEM
        if (!mem_map)
                BUG();
 #endif