4 files changed, 100 insertions, 14 deletions

diff --git a/arch/i386/mm/boot_ioremap.c b/arch/i386/mm/boot_ioremap.c
index 5d44f4f5ff59..4de11f508c3a 100644
--- a/arch/i386/mm/boot_ioremap.c
+++ b/arch/i386/mm/boot_ioremap.c
@@ -29,8 +29,11 @@
  */
 
 #define BOOT_PTE_PTRS (PTRS_PER_PTE*2)
-#define boot_pte_index(address) \
-             (((address) >> PAGE_SHIFT) & (BOOT_PTE_PTRS - 1))
+
+static unsigned long boot_pte_index(unsigned long vaddr) 
+{
+        return __pa(vaddr) >> PAGE_SHIFT;
+}
 
 static inline boot_pte_t* boot_vaddr_to_pte(void *address)
 {
diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c
index 7c392dc553b8..fb5d8b747de4 100644
--- a/arch/i386/mm/discontig.c
+++ b/arch/i386/mm/discontig.c
@@ -117,7 +117,8 @@ void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
 
 void *node_remap_end_vaddr[MAX_NUMNODES];
 void *node_remap_alloc_vaddr[MAX_NUMNODES];
-
+static unsigned long kva_start_pfn;
+static unsigned long kva_pages;
 /*
  * FLAT - support for basic PC memory model with discontig enabled, essentially
  *        a single node with all available processors in it with a flat
@@ -286,7 +287,6 @@ unsigned long __init setup_memory(void)
 {
         int nid;
         unsigned long system_start_pfn, system_max_low_pfn;
-        unsigned long reserve_pages;
 
         /*
          * When mapping a NUMA machine we allocate the node_mem_map arrays
@@ -298,14 +298,23 @@ unsigned long __init setup_memory(void)
         find_max_pfn();
         get_memcfg_numa();
 
-        reserve_pages = calculate_numa_remap_pages();
+        kva_pages = calculate_numa_remap_pages();
 
         /* partially used pages are not usable - thus round upwards */
         system_start_pfn = min_low_pfn = PFN_UP(init_pg_tables_end);
 
-        system_max_low_pfn = max_low_pfn = find_max_low_pfn() - reserve_pages;
-        printk("reserve_pages = %ld find_max_low_pfn() ~ %ld\n",
-                        reserve_pages, max_low_pfn + reserve_pages);
+        kva_start_pfn = find_max_low_pfn() - kva_pages;
+
+#ifdef CONFIG_BLK_DEV_INITRD
+        /* Numa kva area is below the initrd */
+        if (LOADER_TYPE && INITRD_START)
+                kva_start_pfn = PFN_DOWN(INITRD_START)  - kva_pages;
+#endif
+        kva_start_pfn -= kva_start_pfn & (PTRS_PER_PTE-1);
+
+        system_max_low_pfn = max_low_pfn = find_max_low_pfn();
+        printk("kva_start_pfn ~ %ld find_max_low_pfn() ~ %ld\n",
+                kva_start_pfn, max_low_pfn);
         printk("max_pfn = %ld\n", max_pfn);
 #ifdef CONFIG_HIGHMEM
         highstart_pfn = highend_pfn = max_pfn;
@@ -323,7 +332,7 @@ unsigned long __init setup_memory(void)
                         (ulong) pfn_to_kaddr(max_low_pfn));
         for_each_online_node(nid) {
                 node_remap_start_vaddr[nid] = pfn_to_kaddr(
-                                highstart_pfn + node_remap_offset[nid]);
+                                kva_start_pfn + node_remap_offset[nid]);
                 /* Init the node remap allocator */
                 node_remap_end_vaddr[nid] = node_remap_start_vaddr[nid] +
                         (node_remap_size[nid] * PAGE_SIZE);
@@ -338,7 +347,6 @@ unsigned long __init setup_memory(void)
         }
         printk("High memory starts at vaddr %08lx\n",
                         (ulong) pfn_to_kaddr(highstart_pfn));
-        vmalloc_earlyreserve = reserve_pages * PAGE_SIZE;
         for_each_online_node(nid)
                 find_max_pfn_node(nid);
 
@@ -348,13 +356,18 @@ unsigned long __init setup_memory(void)
         return max_low_pfn;
 }
 
+void __init numa_kva_reserve(void)
+{
+        reserve_bootmem(PFN_PHYS(kva_start_pfn),PFN_PHYS(kva_pages));
+}
+
 void __init zone_sizes_init(void)
 {
         int nid;
 
 
         for_each_online_node(nid) {
-                unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
+                unsigned long zones_size[MAX_NR_ZONES] = {0, };
                 unsigned long *zholes_size;
                 unsigned int max_dma;
 
@@ -409,7 +422,7 @@ void __init set_highmem_pages_init(int bad_ppro)
                 zone_end_pfn = zone_start_pfn + zone->spanned_pages;
 
                 printk("Initializing %s for node %d (%08lx:%08lx)\n",
-                                zone->name, zone->zone_pgdat->node_id,
+                                zone->name, zone_to_nid(zone),
                                 zone_start_pfn, zone_end_pfn);
 
                 for (node_pfn = zone_start_pfn; node_pfn < zone_end_pfn; node_pfn++) {
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 89e8486aac34..efd0bcdac65d 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -629,6 +629,48 @@ void __init mem_init(void)
                 (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
                );
 
+#if 1 /* double-sanity-check paranoia */
+        printk("virtual kernel memory layout:\n"
+               "    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+#ifdef CONFIG_HIGHMEM
+               "    pkmap   : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+#endif
+               "    vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+               "    lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n"
+               "      .init : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+               "      .data : 0x%08lx - 0x%08lx   (%4ld kB)\n"
+               "      .text : 0x%08lx - 0x%08lx   (%4ld kB)\n",
+               FIXADDR_START, FIXADDR_TOP,
+               (FIXADDR_TOP - FIXADDR_START) >> 10,
+
+#ifdef CONFIG_HIGHMEM
+               PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE,
+               (LAST_PKMAP*PAGE_SIZE) >> 10,
+#endif
+
+               VMALLOC_START, VMALLOC_END,
+               (VMALLOC_END - VMALLOC_START) >> 20,
+
+               (unsigned long)__va(0), (unsigned long)high_memory,
+               ((unsigned long)high_memory - (unsigned long)__va(0)) >> 20,
+
+               (unsigned long)&__init_begin, (unsigned long)&__init_end,
+               ((unsigned long)&__init_end - (unsigned long)&__init_begin) >> 10,
+
+               (unsigned long)&_etext, (unsigned long)&_edata,
+               ((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
+
+               (unsigned long)&_text, (unsigned long)&_etext,
+               ((unsigned long)&_etext - (unsigned long)&_text) >> 10);
+
+#ifdef CONFIG_HIGHMEM
+        BUG_ON(PKMAP_BASE+LAST_PKMAP*PAGE_SIZE > FIXADDR_START);
+        BUG_ON(VMALLOC_END                     > PKMAP_BASE);
+#endif
+        BUG_ON(VMALLOC_START                   > VMALLOC_END);
+        BUG_ON((unsigned long)high_memory      > VMALLOC_START);
+#endif /* double-sanity-check paranoia */
+
 #ifdef CONFIG_X86_PAE
         if (!cpu_has_pae)
                 panic("cannot execute a PAE-enabled kernel on a PAE-less CPU!");
@@ -657,7 +699,7 @@ void __init mem_init(void)
 int arch_add_memory(int nid, u64 start, u64 size)
 {
         struct pglist_data *pgdata = &contig_page_data;
-        struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;
+        struct zone *zone = pgdata->node_zones + ZONE_HIGHMEM;
         unsigned long start_pfn = start >> PAGE_SHIFT;
         unsigned long nr_pages = size >> PAGE_SHIFT;
 
diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c
index bd98768d8764..10126e3f8174 100644
--- a/arch/i386/mm/pgtable.c
+++ b/arch/i386/mm/pgtable.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/spinlock.h>
+#include <linux/module.h>
 
 #include <asm/system.h>
 #include <asm/pgtable.h>
@@ -60,7 +61,9 @@ void show_mem(void)
         printk(KERN_INFO "%lu pages writeback\n",
                                         global_page_state(NR_WRITEBACK));
         printk(KERN_INFO "%lu pages mapped\n", global_page_state(NR_FILE_MAPPED));
-        printk(KERN_INFO "%lu pages slab\n", global_page_state(NR_SLAB));
+        printk(KERN_INFO "%lu pages slab\n",
+                global_page_state(NR_SLAB_RECLAIMABLE) +
+                global_page_state(NR_SLAB_UNRECLAIMABLE));
         printk(KERN_INFO "%lu pages pagetables\n",
                                         global_page_state(NR_PAGETABLE));
 }
@@ -137,6 +140,12 @@ void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
         __flush_tlb_one(vaddr);
 }
 
+static int fixmaps;
+#ifndef CONFIG_COMPAT_VDSO
+unsigned long __FIXADDR_TOP = 0xfffff000;
+EXPORT_SYMBOL(__FIXADDR_TOP);
+#endif
+
 void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
 {
         unsigned long address = __fix_to_virt(idx);
@@ -146,6 +155,25 @@ void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
                 return;
         }
         set_pte_pfn(address, phys >> PAGE_SHIFT, flags);
+        fixmaps++;
+}
+
+/**
+ * reserve_top_address - reserves a hole in the top of kernel address space
+ * @reserve - size of hole to reserve
+ *
+ * Can be used to relocate the fixmap area and poke a hole in the top
+ * of kernel address space to make room for a hypervisor.
+ */
+void reserve_top_address(unsigned long reserve)
+{
+        BUG_ON(fixmaps > 0);
+#ifdef CONFIG_COMPAT_VDSO
+        BUG_ON(reserve != 0);
+#else
+        __FIXADDR_TOP = -reserve - PAGE_SIZE;
+        __VMALLOC_RESERVE += reserve;
+#endif
 }
 
 pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)