X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fmm%2Finit_64.c;h=05f12c527b0257cf55719124ed9cfa769468cffa;hb=f2633105cd92b793dd6a6f623b4140287d46160a;hp=458893b376f811fe1e3b0b9f87444a68aeae53c6;hpb=ce9d3c9a6a9aef61525be07fe6ba27d937236aa2;p=linux-2.6

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 458893b376..05f12c527b 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -43,6 +43,8 @@
 #include <asm/proto.h>
 #include <asm/smp.h>
 #include <asm/sections.h>
+#include <asm/kdebug.h>
+#include <asm/numa.h>
 
 #ifndef Dprintk
 #define Dprintk(x...)
@@ -224,7 +226,7 @@ __meminit void *early_ioremap(unsigned long addr, unsigned long size)
 		vaddr += addr & ~PMD_MASK;
 		addr &= PMD_MASK;
 		for (i = 0; i < pmds; i++, addr += PMD_SIZE)
-			set_pmd(pmd + i,__pmd(addr | _KERNPG_TABLE | _PAGE_PSE));
+			set_pmd(pmd+i, __pmd(addr | __PAGE_KERNEL_LARGE_EXEC));
 		__flush_tlb();
 		return (void *)vaddr;
 	next:
@@ -268,7 +270,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end)
 		if (pmd_val(*pmd))
 			continue;
 
-		entry = _PAGE_NX|_PAGE_PSE|_KERNPG_TABLE|_PAGE_GLOBAL|address;
+		entry = __PAGE_KERNEL_LARGE|_PAGE_GLOBAL|address;
 		entry &= __supported_pte_mask;
 		set_pmd(pmd, __pmd(entry));
 	}
@@ -345,7 +347,7 @@ static void __init find_early_table_space(unsigned long end)
 /* Setup the direct mapping of the physical memory at PAGE_OFFSET.
    This runs before bootmem is initialized and gets pages directly from the 
    physical memory. To access them they are temporarily mapped. */
-void __meminit init_memory_mapping(unsigned long start, unsigned long end)
+void __init_refok init_memory_mapping(unsigned long start, unsigned long end)
 { 
 	unsigned long next; 
 
@@ -474,12 +476,6 @@ error:
 }
 EXPORT_SYMBOL_GPL(arch_add_memory);
 
-int remove_memory(u64 start, u64 size)
-{
-	return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(remove_memory);
-
 #if !defined(CONFIG_ACPI_NUMA) && defined(CONFIG_NUMA)
 int memory_add_physaddr_to_nid(u64 start)
 {
@@ -490,34 +486,6 @@ EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
-#ifdef CONFIG_MEMORY_HOTPLUG_RESERVE
-/*
- * Memory Hotadd without sparsemem. The mem_maps have been allocated in advance,
- * just online the pages.
- */
-int __add_pages(struct zone *z, unsigned long start_pfn, unsigned long nr_pages)
-{
-	int err = -EIO;
-	unsigned long pfn;
-	unsigned long total = 0, mem = 0;
-	for (pfn = start_pfn; pfn < start_pfn + nr_pages; pfn++) {
-		if (pfn_valid(pfn)) {
-			online_page(pfn_to_page(pfn));
-			err = 0;
-			mem++;
-		}
-		total++;
-	}
-	if (!err) {
-		z->spanned_pages += total;
-		z->present_pages += mem;
-		z->zone_pgdat->node_spanned_pages += total;
-		z->zone_pgdat->node_present_pages += mem;
-	}
-	return err;
-}
-#endif
-
 static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel, kcore_modules,
 			 kcore_vsyscall;
 
@@ -527,8 +495,15 @@ void __init mem_init(void)
 
 	pci_iommu_alloc();
 
-	/* clear the zero-page */
-	memset(empty_zero_page, 0, PAGE_SIZE);
+	/* clear_bss() already clear the empty_zero_page */
+
+	/* temporary debugging - double check it's true: */
+	{
+		int i;
+
+		for (i = 0; i < 1024; i++)
+			WARN_ON_ONCE(empty_zero_page[i]);
+	}
 
 	reservedpages = 0;
 
@@ -734,12 +709,6 @@ int in_gate_area_no_task(unsigned long addr)
 	return (addr >= VSYSCALL_START) && (addr < VSYSCALL_END);
 }
 
-void * __init alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size)
-{
-	return __alloc_bootmem_core(pgdat->bdata, size,
-			SMP_CACHE_BYTES, (4UL*1024*1024*1024), 0);
-}
-
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
 	if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
@@ -748,3 +717,47 @@ const char *arch_vma_name(struct vm_area_struct *vma)
 		return "[vsyscall]";
 	return NULL;
 }
+
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+/*
+ * Initialise the sparsemem vmemmap using huge-pages at the PMD level.
+ */
+int __meminit vmemmap_populate(struct page *start_page,
+						unsigned long size, int node)
+{
+	unsigned long addr = (unsigned long)start_page;
+	unsigned long end = (unsigned long)(start_page + size);
+	unsigned long next;
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+
+	for (; addr < end; addr = next) {
+		next = pmd_addr_end(addr, end);
+
+		pgd = vmemmap_pgd_populate(addr, node);
+		if (!pgd)
+			return -ENOMEM;
+		pud = vmemmap_pud_populate(pgd, addr, node);
+		if (!pud)
+			return -ENOMEM;
+
+		pmd = pmd_offset(pud, addr);
+		if (pmd_none(*pmd)) {
+			pte_t entry;
+			void *p = vmemmap_alloc_block(PMD_SIZE, node);
+			if (!p)
+				return -ENOMEM;
+
+			entry = pfn_pte(__pa(p) >> PAGE_SHIFT, PAGE_KERNEL_LARGE);
+			set_pmd(pmd, __pmd(pte_val(entry)));
+
+			printk(KERN_DEBUG " [%lx-%lx] PMD ->%p on node %d\n",
+				addr, addr + PMD_SIZE - 1, p, node);
+		} else
+			vmemmap_verify((pte_t *)pmd, node, addr, next);
+	}
+
+	return 0;
+}
+#endif