3 files changed, 35 insertions, 5 deletions

diff --git a/arch/i386/kernel/cpu/mtrr/if.c b/arch/i386/kernel/cpu/mtrr/if.c
index 5ae1705eafa6..c7d8f1756745 100644
--- a/arch/i386/kernel/cpu/mtrr/if.c
+++ b/arch/i386/kernel/cpu/mtrr/if.c
@@ -211,6 +211,9 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
         default:
                 return -ENOTTY;
         case MTRRIOC_ADD_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_ADD_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err =
@@ -218,21 +221,33 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
                                   file, 0);
                 break;
         case MTRRIOC_SET_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_SET_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_add(sentry.base, sentry.size, sentry.type, 0);
                 break;
         case MTRRIOC_DEL_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_DEL_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_file_del(sentry.base, sentry.size, file, 0);
                 break;
         case MTRRIOC_KILL_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_KILL_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_del(-1, sentry.base, sentry.size);
                 break;
         case MTRRIOC_GET_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_GET_ENTRY:
+#endif
                 if (gentry.regnum >= num_var_ranges)
                         return -EINVAL;
                 mtrr_if->get(gentry.regnum, &gentry.base, &size, &type);
@@ -249,6 +264,9 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 
                 break;
         case MTRRIOC_ADD_PAGE_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_ADD_PAGE_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err =
@@ -256,21 +274,33 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
                                   file, 1);
                 break;
         case MTRRIOC_SET_PAGE_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_SET_PAGE_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_add_page(sentry.base, sentry.size, sentry.type, 0);
                 break;
         case MTRRIOC_DEL_PAGE_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_DEL_PAGE_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_file_del(sentry.base, sentry.size, file, 1);
                 break;
         case MTRRIOC_KILL_PAGE_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_KILL_PAGE_ENTRY:
+#endif
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
                 err = mtrr_del_page(-1, sentry.base, sentry.size);
                 break;
         case MTRRIOC_GET_PAGE_ENTRY:
+#ifdef CONFIG_COMPAT
+        case MTRRIOC32_GET_PAGE_ENTRY:
+#endif
                 if (gentry.regnum >= num_var_ranges)
                         return -EINVAL;
                 mtrr_if->get(gentry.regnum, &gentry.base, &size, &type);
@@ -339,7 +369,7 @@ static int mtrr_open(struct inode *inode, struct file *file)
         return single_open(file, mtrr_seq_show, NULL);
 }
 
-static struct file_operations mtrr_fops = {
+static const struct file_operations mtrr_fops = {
         .owner   = THIS_MODULE,
         .open    = mtrr_open, 
         .read    = seq_read,
diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c
index 16bb7ea87145..0acfb6a5a220 100644
--- a/arch/i386/kernel/cpu/mtrr/main.c
+++ b/arch/i386/kernel/cpu/mtrr/main.c
@@ -50,7 +50,7 @@ u32 num_var_ranges = 0;
 unsigned int *usage_table;
 static DEFINE_MUTEX(mtrr_mutex);
 
-u32 size_or_mask, size_and_mask;
+u64 size_or_mask, size_and_mask;
 
 static struct mtrr_ops * mtrr_ops[X86_VENDOR_NUM] = {};
 
@@ -662,8 +662,8 @@ void __init mtrr_bp_init(void)
                              boot_cpu_data.x86_mask == 0x4))
                                 phys_addr = 36;
 
-                        size_or_mask = ~((1 << (phys_addr - PAGE_SHIFT)) - 1);
-                        size_and_mask = ~size_or_mask & 0xfff00000;
+                        size_or_mask = ~((1ULL << (phys_addr - PAGE_SHIFT)) - 1);
+                        size_and_mask = ~size_or_mask & 0xfffff00000ULL;
                 } else if (boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR &&
                            boot_cpu_data.x86 == 6) {
                         /* VIA C* family have Intel style MTRRs, but
diff --git a/arch/i386/kernel/cpu/mtrr/mtrr.h b/arch/i386/kernel/cpu/mtrr/mtrr.h
index d61ea9db6cfe..289dfe6030e3 100644
--- a/arch/i386/kernel/cpu/mtrr/mtrr.h
+++ b/arch/i386/kernel/cpu/mtrr/mtrr.h
@@ -84,7 +84,7 @@ void get_mtrr_state(void);
 
 extern void set_mtrr_ops(struct mtrr_ops * ops);
 
-extern u32 size_or_mask, size_and_mask;
+extern u64 size_or_mask, size_and_mask;
 extern struct mtrr_ops * mtrr_if;
 
 #define is_cpu(vnd)     (mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)