Merge branch 'for_rmk_13' of git://git.mnementh.co.uk/linux-2.6-im

[linux-2.6] / arch / x86 / mm / init_64.c

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index a25cc6fa2207262131dcec567f3b43ce861d0f3f..129618ca0ea274a980ba414b30e604e67c3217fd 100644 (file)
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -86,43 +86,6 @@ early_param("gbpages", parse_direct_gbpages_on);
  * around without checking the pgd every time.
  */
 
-void show_mem(void)
-{
-       long i, total = 0, reserved = 0;
-       long shared = 0, cached = 0;
-       struct page *page;
-       pg_data_t *pgdat;
-
-       printk(KERN_INFO "Mem-info:\n");
-       show_free_areas();
-       for_each_online_pgdat(pgdat) {
-               for (i = 0; i < pgdat->node_spanned_pages; ++i) {
-                       /*
-                        * This loop can take a while with 256 GB and
-                        * 4k pages so defer the NMI watchdog:
-                        */
-                       if (unlikely(i % MAX_ORDER_NR_PAGES == 0))
-                               touch_nmi_watchdog();
-
-                       if (!pfn_valid(pgdat->node_start_pfn + i))
-                               continue;
-
-                       page = pfn_to_page(pgdat->node_start_pfn + i);
-                       total++;
-                       if (PageReserved(page))
-                               reserved++;
-                       else if (PageSwapCache(page))
-                               cached++;
-                       else if (page_count(page))
-                               shared += page_count(page) - 1;
-               }
-       }
-       printk(KERN_INFO "%lu pages of RAM\n",          total);
-       printk(KERN_INFO "%lu reserved pages\n",        reserved);
-       printk(KERN_INFO "%lu pages shared\n",          shared);
-       printk(KERN_INFO "%lu pages swap cached\n",     cached);
-}
-
 int after_bootmem;
 
 static __init void *spp_getpage(void)
@@ -517,118 +480,6 @@ static void __init init_gbpages(void)
                direct_gbpages = 0;
 }
 
-#ifdef CONFIG_MEMTEST
-
-static void __init memtest(unsigned long start_phys, unsigned long size,
-                                unsigned pattern)
-{
-       unsigned long i;
-       unsigned long *start;
-       unsigned long start_bad;
-       unsigned long last_bad;
-       unsigned long val;
-       unsigned long start_phys_aligned;
-       unsigned long count;
-       unsigned long incr;
-
-       switch (pattern) {
-       case 0:
-               val = 0UL;
-               break;
-       case 1:
-               val = -1UL;
-               break;
-       case 2:
-               val = 0x5555555555555555UL;
-               break;
-       case 3:
-               val = 0xaaaaaaaaaaaaaaaaUL;
-               break;
-       default:
-               return;
-       }
-
-       incr = sizeof(unsigned long);
-       start_phys_aligned = ALIGN(start_phys, incr);
-       count = (size - (start_phys_aligned - start_phys))/incr;
-       start = __va(start_phys_aligned);
-       start_bad = 0;
-       last_bad = 0;
-
-       for (i = 0; i < count; i++)
-               start[i] = val;
-       for (i = 0; i < count; i++, start++, start_phys_aligned += incr) {
-               if (*start != val) {
-                       if (start_phys_aligned == last_bad + incr) {
-                               last_bad += incr;
-                       } else {
-                               if (start_bad) {
-                                       printk(KERN_CONT "\n  %016lx bad mem addr %016lx - %016lx reserved",
-                                               val, start_bad, last_bad + incr);
-                                       reserve_early(start_bad, last_bad - start_bad, "BAD RAM");
-                               }
-                               start_bad = last_bad = start_phys_aligned;
-                       }
-               }
-       }
-       if (start_bad) {
-               printk(KERN_CONT "\n  %016lx bad mem addr %016lx - %016lx reserved",
-                       val, start_bad, last_bad + incr);
-               reserve_early(start_bad, last_bad - start_bad, "BAD RAM");
-       }
-
-}
-
-/* default is disabled */
-static int memtest_pattern __initdata;
-
-static int __init parse_memtest(char *arg)
-{
-       if (arg)
-               memtest_pattern = simple_strtoul(arg, NULL, 0);
-       return 0;
-}
-
-early_param("memtest", parse_memtest);
-
-static void __init early_memtest(unsigned long start, unsigned long end)
-{
-       u64 t_start, t_size;
-       unsigned pattern;
-
-       if (!memtest_pattern)
-               return;
-
-       printk(KERN_INFO "early_memtest: pattern num %d", memtest_pattern);
-       for (pattern = 0; pattern < memtest_pattern; pattern++) {
-               t_start = start;
-               t_size = 0;
-               while (t_start < end) {
-                       t_start = find_e820_area_size(t_start, &t_size, 1);
-
-                       /* done ? */
-                       if (t_start >= end)
-                               break;
-                       if (t_start + t_size > end)
-                               t_size = end - t_start;
-
-                       printk(KERN_CONT "\n  %016llx - %016llx pattern %d",
-                               (unsigned long long)t_start,
-                               (unsigned long long)t_start + t_size, pattern);
-
-                       memtest(t_start, t_size, pattern);
-
-                       t_start += t_size;
-               }
-       }
-       printk(KERN_CONT "\n");
-}
-#else
-static void __init early_memtest(unsigned long start, unsigned long end)
-{
-}
-#endif
-
 static unsigned long __init kernel_physical_mapping_init(unsigned long start,
                                                unsigned long end,
                                                unsigned long page_size_mask)
@@ -644,7 +495,7 @@ static unsigned long __init kernel_physical_mapping_init(unsigned long start,
                unsigned long pud_phys;
                pud_t *pud;
 
-               next = start + PGDIR_SIZE;
+               next = (start + PGDIR_SIZE) & PGDIR_MASK;
                if (next > end)
                        next = end;
 
@@ -991,6 +842,13 @@ EXPORT_SYMBOL_GPL(rodata_test_data);
 void mark_rodata_ro(void)
 {
        unsigned long start = PFN_ALIGN(_stext), end = PFN_ALIGN(__end_rodata);
+       unsigned long rodata_start =
+               ((unsigned long)__start_rodata + PAGE_SIZE - 1) & PAGE_MASK;
+
+#ifdef CONFIG_DYNAMIC_FTRACE
+       /* Dynamic tracing modifies the kernel text section */
+       start = rodata_start;
+#endif
 
        printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n",
               (end - start) >> 10);
@@ -1000,8 +858,7 @@ void mark_rodata_ro(void)
         * The rodata section (but not the kernel text!) should also be
         * not-executable.
         */
-       start = ((unsigned long)__start_rodata + PAGE_SIZE - 1) & PAGE_MASK;
-       set_memory_nx(start, (end - start) >> PAGE_SHIFT);
+       set_memory_nx(rodata_start, (end - rodata_start) >> PAGE_SHIFT);
 
        rodata_test();