Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

3 files changed, 23 insertions, 2 deletions

diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 71da1bca13cb..738e6593799d 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -18,7 +18,7 @@ static inline pte_t gup_get_pte(pte_t *ptep)
 #else
         /*
          * With get_user_pages_fast, we walk down the pagetables without taking
-         * any locks.  For this we would like to load the pointers atoimcally,
+         * any locks.  For this we would like to load the pointers atomically,
          * but that is not possible (without expensive cmpxchg8b) on PAE.  What
          * we do have is the guarantee that a pte will only either go from not
          * present to present, or present to not present or both -- it will not
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 5198b9bb34ef..69ddfbd91135 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -49,6 +49,7 @@
 #include <asm/numa.h>
 #include <asm/cacheflush.h>
 #include <asm/init.h>
+#include <linux/bootmem.h>
 
 static unsigned long dma_reserve __initdata;
 
@@ -616,6 +617,21 @@ void __init paging_init(void)
  */
 #ifdef CONFIG_MEMORY_HOTPLUG
 /*
+ * After memory hotplug the variables max_pfn, max_low_pfn and high_memory need
+ * updating.
+ */
+static void  update_end_of_memory_vars(u64 start, u64 size)
+{
+        unsigned long end_pfn = PFN_UP(start + size);
+
+        if (end_pfn > max_pfn) {
+                max_pfn = end_pfn;
+                max_low_pfn = end_pfn;
+                high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
+        }
+}
+
+/*
  * Memory is added always to NORMAL zone. This means you will never get
  * additional DMA/DMA32 memory.
  */
@@ -634,6 +650,9 @@ int arch_add_memory(int nid, u64 start, u64 size)
         ret = __add_pages(nid, zone, start_pfn, nr_pages);
         WARN_ON_ONCE(ret);
 
+        /* update max_pfn, max_low_pfn and high_memory */
+        update_end_of_memory_vars(start, size);
+
         return ret;
 }
 EXPORT_SYMBOL_GPL(arch_add_memory);
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index a27124185fc1..28c68762648f 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -229,9 +229,11 @@ update_nodes_add(int node, unsigned long start, unsigned long end)
                         printk(KERN_ERR "SRAT: Hotplug zone not continuous. Partly ignored\n");
         }
 
-        if (changed)
+        if (changed) {
+                node_set(node, cpu_nodes_parsed);
                 printk(KERN_INFO "SRAT: hot plug zone found %Lx - %Lx\n",
                                  nd->start, nd->end);
+        }
 }
 
 /* Callback for parsing of the Proximity Domain <-> Memory Area mappings */