19 files changed, 86 insertions, 55 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fe361ae7ef2f..dcbec34154cf 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -26,17 +26,10 @@ config X86
         select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
         select HAVE_ARCH_KGDB if !X86_VOYAGER
 
-config DEFCONFIG_LIST
+config ARCH_DEFCONFIG
         string
-        depends on X86_32
-        option defconfig_list
-        default "arch/x86/configs/i386_defconfig"
-
-config DEFCONFIG_LIST
-        string
-        depends on X86_64
-        option defconfig_list
-        default "arch/x86/configs/x86_64_defconfig"
+        default "arch/x86/configs/i386_defconfig" if X86_32
+        default "arch/x86/configs/x86_64_defconfig" if X86_64
 
 
 config GENERIC_LOCKBREAK
diff --git a/arch/x86/boot/printf.c b/arch/x86/boot/printf.c
index c1d00c0274c4..50e47cdbdddd 100644
--- a/arch/x86/boot/printf.c
+++ b/arch/x86/boot/printf.c
@@ -56,7 +56,7 @@ static char *number(char *str, long num, int base, int size, int precision,
         if (type & LEFT)
                 type &= ~ZEROPAD;
         if (base < 2 || base > 36)
-                return 0;
+                return NULL;
         c = (type & ZEROPAD) ? '0' : ' ';
         sign = 0;
         if (type & SIGN) {
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 5910020c3f24..0633cfd0dc29 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -534,7 +534,7 @@ int setup_profiling_timer(unsigned int multiplier)
  */
 void clear_local_APIC(void)
 {
-        int maxlvt = lapic_get_maxlvt();
+        int maxlvt;
         u32 v;
 
         /* APIC hasn't been mapped yet */
diff --git a/arch/x86/kernel/cpu/cpufreq/longrun.c b/arch/x86/kernel/cpu/cpufreq/longrun.c
index af4a867a097c..777a7ff075de 100644
--- a/arch/x86/kernel/cpu/cpufreq/longrun.c
+++ b/arch/x86/kernel/cpu/cpufreq/longrun.c
@@ -245,7 +245,7 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
         if ((ecx > 95) || (ecx == 0) || (eax < ebx))
                 return -EIO;
 
-        edx = (eax - ebx) / (100 - ecx);
+        edx = ((eax - ebx) * 100) / (100 - ecx);
         *low_freq = edx * 1000; /* back to kHz */
 
         dprintk("low frequency is %u kHz\n", *low_freq);
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 46d4034d9f37..206791eb46e3 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1127,12 +1127,23 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                  * an UP version, and is deprecated by AMD.
                  */
                 if (num_online_cpus() != 1) {
-                        printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
+#ifndef CONFIG_ACPI_PROCESSOR
+                        printk(KERN_ERR PFX "ACPI Processor support is required "
+                               "for SMP systems but is absent. Please load the "
+                               "ACPI Processor module before starting this "
+                               "driver.\n");
+#else
+                        printk(KERN_ERR PFX "Your BIOS does not provide ACPI "
+                               "_PSS objects in a way that Linux understands. "
+                               "Please report this to the Linux ACPI maintainers"
+                               " and complain to your BIOS vendor.\n");
+#endif
                         kfree(data);
                         return -ENODEV;
                 }
                 if (pol->cpu != 0) {
-                        printk(KERN_ERR PFX "No _PSS objects for CPU other than CPU0\n");
+                        printk(KERN_ERR PFX "No ACPI _PSS objects for CPU other than "
+                               "CPU0. Complain to your BIOS vendor.\n");
                         kfree(data);
                         return -ENODEV;
                 }
diff --git a/arch/x86/kernel/init_task.c b/arch/x86/kernel/init_task.c
index 3d01e47777db..a4f93b4120c1 100644
--- a/arch/x86/kernel/init_task.c
+++ b/arch/x86/kernel/init_task.c
@@ -11,7 +11,6 @@
 #include <asm/desc.h>
 
 static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
 struct mm_struct init_mm = INIT_MM(init_mm);
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 4bc1be5d5472..08a30986d472 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -53,7 +53,7 @@ static cycle_t kvm_clock_read(void);
  * have elapsed since the hypervisor wrote the data. So we try to account for
  * that with system time
  */
-unsigned long kvm_get_wallclock(void)
+static unsigned long kvm_get_wallclock(void)
 {
         u32 wc_sec, wc_nsec;
         u64 delta;
@@ -86,7 +86,7 @@ unsigned long kvm_get_wallclock(void)
         return ts.tv_sec + 1;
 }
 
-int kvm_set_wallclock(unsigned long now)
+static int kvm_set_wallclock(unsigned long now)
 {
         return 0;
 }
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 67e9b4a1e89d..ba370dc8685b 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -99,15 +99,6 @@ static void mwait_idle(void)
                 local_irq_enable();
 }
 
-
-static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
-{
-        if (force_mwait)
-                return 1;
-        /* Any C1 states supported? */
-        return c->cpuid_level >= 5 && ((cpuid_edx(5) >> 4) & 0xf) > 0;
-}
-
 /*
  * On SMP it's slightly faster (but much more power-consuming!)
  * to poll the ->work.need_resched flag instead of waiting for the
@@ -119,6 +110,33 @@ static void poll_idle(void)
         cpu_relax();
 }
 
+/*
+ * mwait selection logic:
+ *
+ * It depends on the CPU. For AMD CPUs that support MWAIT this is
+ * wrong. Family 0x10 and 0x11 CPUs will enter C1 on HLT. Powersavings
+ * then depend on a clock divisor and current Pstate of the core. If
+ * all cores of a processor are in halt state (C1) the processor can
+ * enter the C1E (C1 enhanced) state. If mwait is used this will never
+ * happen.
+ *
+ * idle=mwait overrides this decision and forces the usage of mwait.
+ */
+static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
+{
+        if (force_mwait)
+                return 1;
+
+        if (c->x86_vendor == X86_VENDOR_AMD) {
+                switch(c->x86) {
+                case 0x10:
+                case 0x11:
+                        return 0;
+                }
+        }
+        return 1;
+}
+
 void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
 {
         static int selected;
diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c
index e4790728b224..068759db63dd 100644
--- a/arch/x86/kernel/tsc_32.c
+++ b/arch/x86/kernel/tsc_32.c
@@ -14,7 +14,7 @@
 
 #include "mach_timer.h"
 
-static int tsc_enabled;
+static int tsc_disabled;
 
 /*
  * On some systems the TSC frequency does not
@@ -28,8 +28,8 @@ EXPORT_SYMBOL_GPL(tsc_khz);
 static int __init tsc_setup(char *str)
 {
         printk(KERN_WARNING "notsc: Kernel compiled with CONFIG_X86_TSC, "
-                                "cannot disable TSC completely.\n");
-        mark_tsc_unstable("user disabled TSC");
+               "cannot disable TSC completely.\n");
+        tsc_disabled = 1;
         return 1;
 }
 #else
@@ -120,7 +120,7 @@ unsigned long long native_sched_clock(void)
          *   very important for it to be as fast as the platform
          *   can achive it. )
          */
-        if (unlikely(!tsc_enabled && !tsc_unstable))
+        if (unlikely(tsc_disabled))
                 /* No locking but a rare wrong value is not a big deal: */
                 return (jiffies_64 - INITIAL_JIFFIES) * (1000000000 / HZ);
 
@@ -322,7 +322,6 @@ void mark_tsc_unstable(char *reason)
 {
         if (!tsc_unstable) {
                 tsc_unstable = 1;
-                tsc_enabled = 0;
                 printk("Marking TSC unstable due to: %s.\n", reason);
                 /* Can be called before registration */
                 if (clocksource_tsc.mult)
@@ -336,7 +335,7 @@ EXPORT_SYMBOL_GPL(mark_tsc_unstable);
 static int __init dmi_mark_tsc_unstable(const struct dmi_system_id *d)
 {
         printk(KERN_NOTICE "%s detected: marking TSC unstable.\n",
-                       d->ident);
+               d->ident);
         tsc_unstable = 1;
         return 0;
 }
@@ -403,14 +402,22 @@ void __init tsc_init(void)
 {
         int cpu;
 
-        if (!cpu_has_tsc)
+        if (!cpu_has_tsc || tsc_disabled) {
+                /* Disable the TSC in case of !cpu_has_tsc */
+                tsc_disabled = 1;
                 return;
+        }
 
         cpu_khz = calculate_cpu_khz();
         tsc_khz = cpu_khz;
 
         if (!cpu_khz) {
                 mark_tsc_unstable("could not calculate TSC khz");
+                /*
+                 * We need to disable the TSC completely in this case
+                 * to prevent sched_clock() from using it.
+                 */
+                tsc_disabled = 1;
                 return;
         }
 
@@ -441,8 +448,6 @@ void __init tsc_init(void)
         if (check_tsc_unstable()) {
                 clocksource_tsc.rating = 0;
                 clocksource_tsc.flags &= ~CLOCK_SOURCE_IS_CONTINUOUS;
-        } else
-                tsc_enabled = 1;
-
+        }
         clocksource_register(&clocksource_tsc);
 }
diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c
index fcc16e58609e..1784b8077a12 100644
--- a/arch/x86/kernel/tsc_64.c
+++ b/arch/x86/kernel/tsc_64.c
@@ -227,14 +227,14 @@ void __init tsc_calibrate(void)
         /* hpet or pmtimer available ? */
         if (!hpet && !pm1 && !pm2) {
                 printk(KERN_INFO "TSC calibrated against PIT\n");
-                return;
+                goto out;
         }
 
         /* Check, whether the sampling was disturbed by an SMI */
         if (tsc1 == ULONG_MAX || tsc2 == ULONG_MAX) {
                 printk(KERN_WARNING "TSC calibration disturbed by SMI, "
                        "using PIT calibration result\n");
-                return;
+                goto out;
         }
 
         tsc2 = (tsc2 - tsc1) * 1000000L;
@@ -255,6 +255,7 @@ void __init tsc_calibrate(void)
 
         tsc_khz = tsc2 / tsc1;
 
+out:
         for_each_possible_cpu(cpu)
                 set_cyc2ns_scale(tsc_khz, cpu);
 }
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 3324d90038e4..7c077a9d9777 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -216,7 +216,7 @@ int pit_has_pending_timer(struct kvm_vcpu *vcpu)
 {
         struct kvm_pit *pit = vcpu->kvm->arch.vpit;
 
-        if (pit && vcpu->vcpu_id == 0)
+        if (pit && vcpu->vcpu_id == 0 && pit->pit_state.inject_pending)
                 return atomic_read(&pit->pit_state.pit_timer.pending);
 
         return 0;
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 36809d79788b..c297c50eba63 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -957,7 +957,7 @@ int apic_has_pending_timer(struct kvm_vcpu *vcpu)
 {
         struct kvm_lapic *lapic = vcpu->arch.apic;
 
-        if (lapic)
+        if (lapic && apic_enabled(lapic) && apic_lvt_enabled(lapic, APIC_LVTT))
                 return atomic_read(&lapic->timer.pending);
 
         return 0;
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 36c5406b1813..7246b60afb96 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1996,7 +1996,7 @@ static struct shrinker mmu_shrinker = {
         .seeks = DEFAULT_SEEKS * 10,
 };
 
-void mmu_destroy_caches(void)
+static void mmu_destroy_caches(void)
 {
         if (pte_chain_cache)
                 kmem_cache_destroy(pte_chain_cache);
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index f2a696d6a243..8a96320ab071 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -677,8 +677,9 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt,
         c->use_modrm_ea = 1;
 
         if (c->modrm_mod == 3) {
-                c->modrm_val = *(unsigned long *)
-                        decode_register(c->modrm_rm, c->regs, c->d & ByteOp);
+                c->modrm_ptr = decode_register(c->modrm_rm,
+                                               c->regs, c->d & ByteOp);
+                c->modrm_val = *(unsigned long *)c->modrm_ptr;
                 return rc;
         }
 
@@ -1005,6 +1006,7 @@ done_prefixes:
                 if ((c->d & ModRM) && c->modrm_mod == 3) {
                         c->src.type = OP_REG;
                         c->src.val = c->modrm_val;
+                        c->src.ptr = c->modrm_ptr;
                         break;
                 }
                 c->src.type = OP_MEM;
@@ -1049,6 +1051,7 @@ done_prefixes:
                 if ((c->d & ModRM) && c->modrm_mod == 3) {
                         c->dst.type = OP_REG;
                         c->dst.val = c->dst.orig_val = c->modrm_val;
+                        c->dst.ptr = c->modrm_ptr;
                         break;
                 }
                 c->dst.type = OP_MEM;
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index af65b2da3ba0..5c7e2fd52075 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -582,8 +582,9 @@ static void __init lguest_init_IRQ(void)
                 int vector = FIRST_EXTERNAL_VECTOR + i;
                 if (vector != SYSCALL_VECTOR) {
                         set_intr_gate(vector, interrupt[i]);
-                        set_irq_chip_and_handler(i, &lguest_irq_controller,
-                                                 handle_level_irq);
+                        set_irq_chip_and_handler_name(i, &lguest_irq_controller,
+                                                      handle_level_irq,
+                                                      "level");
                 }
         }
         /* This call is required to set up for 4k stacks, where we have
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index bcb1a8e4b2db..de3a99812450 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -28,7 +28,7 @@
 #ifdef CONFIG_X86_PAT
 int __read_mostly pat_wc_enabled = 1;
 
-void __init pat_disable(char *reason)
+void __cpuinit pat_disable(char *reason)
 {
         pat_wc_enabled = 0;
         printk(KERN_INFO "%s\n", reason);
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 8545c8a9d107..6e64aaf00d1d 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -302,18 +302,18 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
         },
         {
                 .callback = set_bf_sort,
-                .ident = "HP ProLiant DL385 G2",
+                .ident = "HP ProLiant DL360",
                 .matches = {
                         DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"),
                 },
         },
         {
                 .callback = set_bf_sort,
-                .ident = "HP ProLiant DL585 G2",
+                .ident = "HP ProLiant DL380",
                 .matches = {
                         DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"),
                 },
         },
 #ifdef __i386__
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 23476c2ebfc4..efa2ba7c6005 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -106,9 +106,9 @@ int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
                 do_realtime((struct timespec *)tv);
                 tv->tv_usec /= 1000;
                 if (unlikely(tz != NULL)) {
-                        /* This relies on gcc inlining the memcpy. We'll notice
-                           if it ever fails to do so. */
-                        memcpy(tz, &gtod->sys_tz, sizeof(struct timezone));
+                        /* Avoid memcpy. Some old compilers fail to inline it */
+                        tz->tz_minuteswest = gtod->sys_tz.tz_minuteswest;
+                        tz->tz_dsttime = gtod->sys_tz.tz_dsttime;
                 }
                 return 0;
         }
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 126766d43aea..3525ef523a74 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -60,7 +60,7 @@ xmaddr_t arbitrary_virt_to_machine(unsigned long address)
 {
         unsigned int level;
         pte_t *pte = lookup_address(address, &level);
-        unsigned offset = address & PAGE_MASK;
+        unsigned offset = address & ~PAGE_MASK;
 
         BUG_ON(pte == NULL);