Merge commit 'upstream/master'

[linux-2.6] / arch / x86 / mm / init_32.c

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index aa5e37c9f4b462c79362f3d3c5ae561b52380e7f..d37f29376b0ce455ae3907051a58779f4b995a25 100644 (file)
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -50,6 +50,7 @@
 
 unsigned int __VMALLOC_RESERVE = 128 << 20;
 
+unsigned long max_low_pfn_mapped;
 unsigned long max_pfn_mapped;
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@@ -383,11 +384,6 @@ static void __init set_highmem_pages_init(void)
 # define set_highmem_pages_init()      do { } while (0)
 #endif /* CONFIG_HIGHMEM */
 
-pteval_t __PAGE_KERNEL = _PAGE_KERNEL;
-EXPORT_SYMBOL(__PAGE_KERNEL);
-
-pteval_t __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC;
-
 void __init native_pagetable_setup_start(pgd_t *base)
 {
        unsigned long pfn, va;
@@ -509,7 +505,7 @@ void zap_low_mappings(void)
 
 int nx_enabled;
 
-pteval_t __supported_pte_mask __read_mostly = ~_PAGE_NX;
+pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 #ifdef CONFIG_X86_PAE
@@ -660,12 +656,14 @@ void __init initmem_init(unsigned long start_pfn,
        if (max_pfn > max_low_pfn)
                highstart_pfn = max_low_pfn;
        memory_present(0, 0, highend_pfn);
+       e820_register_active_regions(0, 0, highend_pfn);
        printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
                pages_to_mb(highend_pfn - highstart_pfn));
        num_physpages = highend_pfn;
        high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;
 #else
        memory_present(0, 0, max_low_pfn);
+       e820_register_active_regions(0, 0, max_low_pfn);
        num_physpages = max_low_pfn;
        high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
 #endif
@@ -677,25 +675,21 @@ void __init initmem_init(unsigned long start_pfn,
 
        setup_bootmem_allocator();
 }
+#endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
-void __init zone_sizes_init(void)
+static void __init zone_sizes_init(void)
 {
        unsigned long max_zone_pfns[MAX_NR_ZONES];
        memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
        max_zone_pfns[ZONE_DMA] =
                virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
        max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
-       remove_all_active_ranges();
 #ifdef CONFIG_HIGHMEM
        max_zone_pfns[ZONE_HIGHMEM] = highend_pfn;
-       e820_register_active_regions(0, 0, highend_pfn);
-#else
-       e820_register_active_regions(0, 0, max_low_pfn);
 #endif
 
        free_area_init_nodes(max_zone_pfns);
 }
-#endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
 void __init setup_bootmem_allocator(void)
 {
@@ -798,8 +792,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
        /* Enable PGE if available */
        if (cpu_has_pge) {
                set_in_cr4(X86_CR4_PGE);
-               __PAGE_KERNEL |= _PAGE_GLOBAL;
-               __PAGE_KERNEL_EXEC |= _PAGE_GLOBAL;
+               __supported_pte_mask |= _PAGE_GLOBAL;
        }
 
        /*
@@ -851,6 +844,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
                reserve_early(table_start << PAGE_SHIFT,
                                 table_end << PAGE_SHIFT, "PGTABLE");
 
+       if (!after_init_bootmem)
+               early_memtest(start, end);
+
        return end >> PAGE_SHIFT;
 }
 
@@ -875,8 +871,6 @@ void __init paging_init(void)
         */
        sparse_init();
        zone_sizes_init();
-
-       paravirt_post_allocator_init();
 }
 
 /*
@@ -1042,6 +1036,8 @@ void mark_rodata_ro(void)
        unsigned long start = PFN_ALIGN(_text);
        unsigned long size = PFN_ALIGN(_etext) - start;
 
+#ifndef CONFIG_DYNAMIC_FTRACE
+       /* Dynamic tracing modifies the kernel text section */
        set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
        printk(KERN_INFO "Write protecting the kernel text: %luk\n",
                size >> 10);
@@ -1054,6 +1050,8 @@ void mark_rodata_ro(void)
        printk(KERN_INFO "Testing CPA: write protecting again\n");
        set_pages_ro(virt_to_page(start), size>>PAGE_SHIFT);
 #endif
+#endif /* CONFIG_DYNAMIC_FTRACE */
+
        start += size;
        size = (unsigned long)__end_rodata - start;
        set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);