Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86 ACPI: fix breakage of resume on 64-bit UP systems with SMP kernel
  Introduce is_vmalloc_or_module_addr() and use with DEBUG_VIRTUAL

1 files changed, 16 insertions, 2 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 712ae47af0bf..0797589d51f8 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -175,6 +175,21 @@ static int vmap_page_range(unsigned long addr, unsigned long end,
         return nr;
 }
 
+static inline int is_vmalloc_or_module_addr(const void *x)
+{
+        /*
+         * x86-64 and sparc64 put modules in a special place,
+         * and fall back on vmalloc() if that fails. Others
+         * just put it in the vmalloc space.
+         */
+#if defined(CONFIG_MODULES) && defined(MODULES_VADDR)
+        unsigned long addr = (unsigned long)x;
+        if (addr >= MODULES_VADDR && addr < MODULES_END)
+                return 1;
+#endif
+        return is_vmalloc_addr(x);
+}
+
 /*
  * Walk a vmap address to the struct page it maps.
  */
@@ -188,8 +203,7 @@ struct page *vmalloc_to_page(const void *vmalloc_addr)
          * XXX we might need to change this if we add VIRTUAL_BUG_ON for
          * architectures that do not vmalloc module space
          */
-        VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) &&
-                        !is_module_address(addr));
+        VIRTUAL_BUG_ON(!is_vmalloc_or_module_addr(vmalloc_addr));
 
         if (!pgd_none(*pgd)) {
                 pud_t *pud = pud_offset(pgd, addr);