5 files changed, 40 insertions, 30 deletions

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 85a78575956c..8078955845ae 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -408,7 +408,7 @@ config X86_MINIMUM_CPU_FAMILY
 
 config X86_DEBUGCTLMSR
         def_bool y
-        depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
+        depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386) && !UML
 
 menuconfig PROCESSOR_SELECT
         bool "Supported processor vendors" if EMBEDDED
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
index b8e05ee4f736..beea4466b063 100644
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -160,6 +160,7 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
                 switch (c->x86_model) {
                 case 0x0E: /* Core */
                 case 0x0F: /* Core Duo */
+                case 0x16: /* Celeron Core */
                         p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
                         return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PCORE);
                 case 0x0D: /* Pentium M (Dothan) */
@@ -171,7 +172,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
         }
 
         if (c->x86 != 0xF) {
-                printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. Please send an e-mail to <cpufreq@vger.kernel.org>\n");
+                if (!cpu_has(c, X86_FEATURE_EST))
+                        printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. "
+                                "Please send an e-mail to <cpufreq@vger.kernel.org>\n");
                 return 0;
         }
 
@@ -274,6 +277,7 @@ static struct cpufreq_driver p4clockmod_driver = {
         .name           = "p4-clockmod",
         .owner          = THIS_MODULE,
         .attr           = p4clockmod_attr,
+        .hide_interface = 1,
 };
 
 
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
index 3b5f06423e77..f0ea6fa2f53c 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -459,9 +459,7 @@ static int centrino_verify (struct cpufreq_policy *policy)
  * Sets a new CPUFreq policy.
  */
 struct allmasks {
-        cpumask_t               online_policy_cpus;
         cpumask_t               saved_mask;
-        cpumask_t               set_mask;
         cpumask_t               covered_cpus;
 };
 
@@ -475,9 +473,7 @@ static int centrino_target (struct cpufreq_policy *policy,
         int                     retval = 0;
         unsigned int            j, k, first_cpu, tmp;
         CPUMASK_ALLOC(allmasks);
-        CPUMASK_PTR(online_policy_cpus, allmasks);
         CPUMASK_PTR(saved_mask, allmasks);
-        CPUMASK_PTR(set_mask, allmasks);
         CPUMASK_PTR(covered_cpus, allmasks);
 
         if (unlikely(allmasks == NULL))
@@ -497,30 +493,28 @@ static int centrino_target (struct cpufreq_policy *policy,
                 goto out;
         }
 
-#ifdef CONFIG_HOTPLUG_CPU
-        /* cpufreq holds the hotplug lock, so we are safe from here on */
-        cpus_and(*online_policy_cpus, cpu_online_map, policy->cpus);
-#else
-        *online_policy_cpus = policy->cpus;
-#endif
-
         *saved_mask = current->cpus_allowed;
         first_cpu = 1;
         cpus_clear(*covered_cpus);
-        for_each_cpu_mask_nr(j, *online_policy_cpus) {
+        for_each_cpu_mask_nr(j, policy->cpus) {
+                const cpumask_t *mask;
+
+                /* cpufreq holds the hotplug lock, so we are safe here */
+                if (!cpu_online(j))
+                        continue;
+
                 /*
                  * Support for SMP systems.
                  * Make sure we are running on CPU that wants to change freq
                  */
-                cpus_clear(*set_mask);
                 if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
-                        cpus_or(*set_mask, *set_mask, *online_policy_cpus);
+                        mask = &policy->cpus;
                 else
-                        cpu_set(j, *set_mask);
+                        mask = &cpumask_of_cpu(j);
 
-                set_cpus_allowed_ptr(current, set_mask);
+                set_cpus_allowed_ptr(current, mask);
                 preempt_disable();
-                if (unlikely(!cpu_isset(smp_processor_id(), *set_mask))) {
+                if (unlikely(!cpu_isset(smp_processor_id(), *mask))) {
                         dprintk("couldn't limit to CPUs in this domain\n");
                         retval = -EAGAIN;
                         if (first_cpu) {
@@ -548,7 +542,9 @@ static int centrino_target (struct cpufreq_policy *policy,
                         dprintk("target=%dkHz old=%d new=%d msr=%04x\n",
                                 target_freq, freqs.old, freqs.new, msr);
 
-                        for_each_cpu_mask_nr(k, *online_policy_cpus) {
+                        for_each_cpu_mask_nr(k, policy->cpus) {
+                                if (!cpu_online(k))
+                                        continue;
                                 freqs.cpu = k;
                                 cpufreq_notify_transition(&freqs,
                                         CPUFREQ_PRECHANGE);
@@ -571,7 +567,9 @@ static int centrino_target (struct cpufreq_policy *policy,
                 preempt_enable();
         }
 
-        for_each_cpu_mask_nr(k, *online_policy_cpus) {
+        for_each_cpu_mask_nr(k, policy->cpus) {
+                if (!cpu_online(k))
+                        continue;
                 freqs.cpu = k;
                 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
         }
@@ -584,18 +582,17 @@ static int centrino_target (struct cpufreq_policy *policy,
                  * Best effort undo..
                  */
 
-                if (!cpus_empty(*covered_cpus))
-                        for_each_cpu_mask_nr(j, *covered_cpus) {
-                                set_cpus_allowed_ptr(current,
-                                                     &cpumask_of_cpu(j));
-                                wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
-                        }
+                for_each_cpu_mask_nr(j, *covered_cpus) {
+                        set_cpus_allowed_ptr(current, &cpumask_of_cpu(j));
+                        wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+                }
 
                 tmp = freqs.new;
                 freqs.new = freqs.old;
                 freqs.old = tmp;
-                for_each_cpu_mask_nr(j, *online_policy_cpus) {
-                        freqs.cpu = j;
+                for_each_cpu_mask_nr(j, policy->cpus) {
+                        if (!cpu_online(j))
+                                continue;
                         cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
                         cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
                 }
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index 98d4fdb7dc04..cdac7d62369b 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -139,6 +139,15 @@ static unsigned int pentium_core_get_frequency(void)
         case 3:
                 fsb = 166667;
                 break;
+        case 2:
+                fsb = 200000;
+                break;
+        case 0:
+                fsb = 266667;
+                break;
+        case 4:
+                fsb = 333333;
+                break;
         default:
                 printk(KERN_ERR "PCORE - MSR_FSB_FREQ undefined value");
         }
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index 242c3440687f..8cba3749a511 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -13,7 +13,7 @@
 
 int swiotlb __read_mostly;
 
-void *swiotlb_alloc_boot(size_t size, unsigned long nslabs)
+void * __init swiotlb_alloc_boot(size_t size, unsigned long nslabs)
 {
         return alloc_bootmem_low_pages(size);
 }