Merge branch 'linus' into x86/cleanups

4 files changed, 14 insertions, 22 deletions

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 57ec8c86a877..9e268b6b204e 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -667,7 +667,6 @@ void __kprobes do_page_fault(struct pt_regs *regs, unsigned long error_code)
         if (unlikely(in_atomic() || !mm))
                 goto bad_area_nosemaphore;
 
-again:
         /*
          * When running in the kernel we expect faults to occur only to
          * addresses in user space.  All other faults represent errors in the
@@ -859,25 +858,14 @@ no_context:
         oops_end(flags, regs, sig);
 #endif
 
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
 out_of_memory:
+        /*
+         * We ran out of memory, call the OOM killer, and return the userspace
+         * (which will retry the fault, or kill us if we got oom-killed).
+         */
         up_read(&mm->mmap_sem);
-        if (is_global_init(tsk)) {
-                yield();
-                /*
-                 * Re-lookup the vma - in theory the vma tree might
-                 * have changed:
-                 */
-                goto again;
-        }
-
-        printk("VM: killing process %s\n", tsk->comm);
-        if (error_code & PF_USER)
-                do_group_exit(SIGKILL);
-        goto no_context;
+        pagefault_out_of_memory();
+        return;
 
 do_sigbus:
         up_read(&mm->mmap_sem);
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index a9dd0b7ad618..4a6989e47a53 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -327,6 +327,8 @@ int devmem_is_allowed(unsigned long pagenr)
 {
         if (pagenr <= 256)
                 return 1;
+        if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
+                return 0;
         if (!page_is_ram(pagenr))
                 return 1;
         return 0;
@@ -1078,7 +1080,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
         unsigned long start_pfn = start >> PAGE_SHIFT;
         unsigned long nr_pages = size >> PAGE_SHIFT;
 
-        return __add_pages(zone, start_pfn, nr_pages);
+        return __add_pages(nid, zone, start_pfn, nr_pages);
 }
 #endif
 
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 9f7a0d24d42a..23f68e77ad1f 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -857,7 +857,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
         if (last_mapped_pfn > max_pfn_mapped)
                 max_pfn_mapped = last_mapped_pfn;
 
-        ret = __add_pages(zone, start_pfn, nr_pages);
+        ret = __add_pages(nid, zone, start_pfn, nr_pages);
         WARN_ON_ONCE(ret);
 
         return ret;
@@ -888,6 +888,8 @@ int devmem_is_allowed(unsigned long pagenr)
 {
         if (pagenr <= 256)
                 return 1;
+        if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
+                return 0;
         if (!page_is_ram(pagenr))
                 return 1;
         return 0;
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 8518c678d83f..d1f7439d173c 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -239,7 +239,7 @@ void resume_map_numa_kva(pgd_t *pgd_base)
                 start_pfn = node_remap_start_pfn[node];
                 size = node_remap_size[node];
 
-                printk(KERN_DEBUG "%s: node %d\n", __FUNCTION__, node);
+                printk(KERN_DEBUG "%s: node %d\n", __func__, node);
 
                 for (pfn = 0; pfn < size; pfn += PTRS_PER_PTE) {
                         unsigned long vaddr = start_va + (pfn << PAGE_SHIFT);
@@ -251,7 +251,7 @@ void resume_map_numa_kva(pgd_t *pgd_base)
                                                 PAGE_KERNEL_LARGE_EXEC));
 
                         printk(KERN_DEBUG "%s: %08lx -> pfn %08lx\n",
-                                __FUNCTION__, vaddr, start_pfn + pfn);
+                                __func__, vaddr, start_pfn + pfn);
                 }
         }
 }