1 files changed, 3 insertions, 58 deletions

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 749559ed80f5..949708d7a481 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -49,12 +49,9 @@
 #include <asm/paravirt.h>
 #include <asm/setup.h>
 #include <asm/cacheflush.h>
+#include <asm/page_types.h>
 #include <asm/init.h>
 
-unsigned long max_low_pfn_mapped;
-unsigned long max_pfn_mapped;
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 unsigned long highstart_pfn, highend_pfn;
 
 static noinline int do_test_wp_bit(void);
@@ -587,61 +584,9 @@ void zap_low_mappings(void)
         flush_tlb_all();
 }
 
-int nx_enabled;
-
 pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
-#ifdef CONFIG_X86_PAE
-
-static int disable_nx __initdata;
-
-/*
- * noexec = on|off
- *
- * Control non executable mappings.
- *
- * on      Enable
- * off     Disable
- */
-static int __init noexec_setup(char *str)
-{
-        if (!str || !strcmp(str, "on")) {
-                if (cpu_has_nx) {
-                        __supported_pte_mask |= _PAGE_NX;
-                        disable_nx = 0;
-                }
-        } else {
-                if (!strcmp(str, "off")) {
-                        disable_nx = 1;
-                        __supported_pte_mask &= ~_PAGE_NX;
-                } else {
-                        return -EINVAL;
-                }
-        }
-
-        return 0;
-}
-early_param("noexec", noexec_setup);
-
-void __init set_nx(void)
-{
-        unsigned int v[4], l, h;
-
-        if (cpu_has_pae && (cpuid_eax(0x80000000) > 0x80000001)) {
-                cpuid(0x80000001, &v[0], &v[1], &v[2], &v[3]);
-
-                if ((v[3] & (1 << 20)) && !disable_nx) {
-                        rdmsr(MSR_EFER, l, h);
-                        l |= EFER_NX;
-                        wrmsr(MSR_EFER, l, h);
-                        nx_enabled = 1;
-                        __supported_pte_mask |= _PAGE_NX;
-                }
-        }
-}
-#endif
-
 /* user-defined highmem size */
 static unsigned int highmem_pages = -1;
 
@@ -761,15 +706,15 @@ void __init initmem_init(unsigned long start_pfn,
         highstart_pfn = highend_pfn = max_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);
+        sparse_memory_present_with_active_regions(0);
         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);
+        sparse_memory_present_with_active_regions(0);
         num_physpages = max_low_pfn;
         high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
 #endif