10 files changed, 37 insertions, 23 deletions

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 20e6a795e160..d2c6c930b491 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -212,9 +212,9 @@ extern int __get_user_bad(void);
                      : "A" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 #else
 #define __put_user_asm_u64(x, ptr, retval, errret) \
-        __put_user_asm(x, ptr, retval, "q", "", "Zr", errret)
+        __put_user_asm(x, ptr, retval, "q", "", "er", errret)
 #define __put_user_asm_ex_u64(x, addr)  \
-        __put_user_asm_ex(x, addr, "q", "", "Zr")
+        __put_user_asm_ex(x, addr, "q", "", "er")
 #define __put_user_x8(x, ptr, __ret_pu) __put_user_x(8, x, ptr, __ret_pu)
 #endif
 
diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h
index 8cc687326eb8..db24b215fc50 100644
--- a/arch/x86/include/asm/uaccess_64.h
+++ b/arch/x86/include/asm/uaccess_64.h
@@ -88,11 +88,11 @@ int __copy_to_user(void __user *dst, const void *src, unsigned size)
                               ret, "l", "k", "ir", 4);
                 return ret;
         case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
-                              ret, "q", "", "ir", 8);
+                              ret, "q", "", "er", 8);
                 return ret;
         case 10:
                 __put_user_asm(*(u64 *)src, (u64 __user *)dst,
-                               ret, "q", "", "ir", 10);
+                               ret, "q", "", "er", 10);
                 if (unlikely(ret))
                         return ret;
                 asm("":::"memory");
@@ -101,12 +101,12 @@ int __copy_to_user(void __user *dst, const void *src, unsigned size)
                 return ret;
         case 16:
                 __put_user_asm(*(u64 *)src, (u64 __user *)dst,
-                               ret, "q", "", "ir", 16);
+                               ret, "q", "", "er", 16);
                 if (unlikely(ret))
                         return ret;
                 asm("":::"memory");
                 __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
-                               ret, "q", "", "ir", 8);
+                               ret, "q", "", "er", 8);
                 return ret;
         default:
                 return copy_user_generic((__force void *)dst, src, size);
@@ -157,7 +157,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
                                ret, "q", "", "=r", 8);
                 if (likely(!ret))
                         __put_user_asm(tmp, (u64 __user *)dst,
-                                       ret, "q", "", "ir", 8);
+                                       ret, "q", "", "er", 8);
                 return ret;
         }
         default:
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 28e5f5956042..e2485b03f1cf 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -356,7 +356,7 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
 #endif
 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_PCI)
         /* check CPU config space for extended APIC ID */
-        if (c->x86 >= 0xf) {
+        if (cpu_has_apic && c->x86 >= 0xf) {
                 unsigned int val;
                 val = read_pci_config(0, 24, 0, 0x68);
                 if ((val & ((1 << 17) | (1 << 18))) == ((1 << 17) | (1 << 18)))
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 484c1e5f658e..1cfb623ce11c 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1692,17 +1692,15 @@ static ssize_t set_trigger(struct sys_device *s, struct sysdev_attribute *attr,
                                 const char *buf, size_t siz)
 {
         char *p;
-        int len;
 
         strncpy(mce_helper, buf, sizeof(mce_helper));
         mce_helper[sizeof(mce_helper)-1] = 0;
-        len = strlen(mce_helper);
         p = strchr(mce_helper, '\n');
 
-        if (*p)
+        if (p)
                 *p = 0;
 
-        return len;
+        return strlen(mce_helper) + !!p;
 }
 
 static ssize_t set_ignore_ce(struct sys_device *s,
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 696f0e475c2d..92b7703d3d58 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -187,7 +187,7 @@ static void __init apic_intr_init(void)
 #ifdef CONFIG_X86_THERMAL_VECTOR
         alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
 #endif
-#ifdef CONFIG_X86_THRESHOLD
+#ifdef CONFIG_X86_MCE_THRESHOLD
         alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);
 #endif
 #if defined(CONFIG_X86_NEW_MCE) && defined(CONFIG_X86_LOCAL_APIC)
diff --git a/arch/x86/kernel/mfgpt_32.c b/arch/x86/kernel/mfgpt_32.c
index 846510b78a09..2a62d843f015 100644
--- a/arch/x86/kernel/mfgpt_32.c
+++ b/arch/x86/kernel/mfgpt_32.c
@@ -347,7 +347,7 @@ static irqreturn_t mfgpt_tick(int irq, void *dev_id)
 
 static struct irqaction mfgptirq  = {
         .handler = mfgpt_tick,
-        .flags = IRQF_DISABLED | IRQF_NOBALANCING,
+        .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER,
         .name = "mfgpt-timer"
 };
 
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index d2d1ce8170f0..508e982dd072 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -249,6 +249,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-Z540N"),
                 },
         },
+        {       /* Handle problems with rebooting on CompuLab SBC-FITPC2 */
+                .callback = set_bios_reboot,
+                .ident = "CompuLab SBC-FITPC2",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "CompuLab"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "SBC-FITPC2"),
+                },
+        },
         { }
 };
 
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index de2cab132844..63f32d220ef2 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -672,6 +672,19 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
                         DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"),
                 },
         },
+        {
+        /*
+         * AMI BIOS with low memory corruption was found on Intel DG45ID board.
+         * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will
+         * match only DMI_BOARD_NAME and see if there is more bad products
+         * with this vendor.
+         */
+                .callback = dmi_low_memory_corruption,
+                .ident = "AMI BIOS",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_NAME, "DG45ID"),
+                },
+        },
 #endif
         {}
 };
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 367e87882041..59f31d2dd435 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -112,11 +112,6 @@ SECTIONS
                 _sdata = .;
                 DATA_DATA
                 CONSTRUCTORS
-
-#ifdef CONFIG_X86_64
-                /* End of data section */
-                _edata = .;
-#endif
         } :data
 
 #ifdef CONFIG_X86_32
@@ -156,10 +151,8 @@ SECTIONS
         .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
                 *(.data.read_mostly)
 
-#ifdef CONFIG_X86_32
                 /* End of data section */
                 _edata = .;
-#endif
         }
 
 #ifdef CONFIG_X86_64
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 2dfcbf9df2ae..dbb5381f7b3b 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -79,8 +79,10 @@ static __init void bad_srat(void)
         acpi_numa = -1;
         for (i = 0; i < MAX_LOCAL_APIC; i++)
                 apicid_to_node[i] = NUMA_NO_NODE;
-        for (i = 0; i < MAX_NUMNODES; i++)
-                nodes_add[i].start = nodes[i].end = 0;
+        for (i = 0; i < MAX_NUMNODES; i++) {
+                nodes[i].start = nodes[i].end = 0;
+                nodes_add[i].start = nodes_add[i].end = 0;
+        }
         remove_all_active_ranges();
 }