24 files changed, 591 insertions, 280 deletions

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 0cd82d068613..630e623f61e0 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -161,6 +161,7 @@
  */
 #define X86_FEATURE_IDA         (7*32+ 0) /* Intel Dynamic Acceleration */
 #define X86_FEATURE_ARAT        (7*32+ 1) /* Always Running APIC Timer */
+#define X86_FEATURE_CPB         (7*32+ 2) /* AMD Core Performance Boost */
 
 /* Virtualization flags: Linux defined */
 #define X86_FEATURE_TPR_SHADOW  (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/include/asm/hyperv.h b/arch/x86/include/asm/hyperv.h
index e153a2b3889a..5df477ac3af7 100644
--- a/arch/x86/include/asm/hyperv.h
+++ b/arch/x86/include/asm/hyperv.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_KVM_HYPERV_H
-#define _ASM_X86_KVM_HYPERV_H
+#ifndef _ASM_X86_HYPERV_H
+#define _ASM_X86_HYPERV_H
 
 #include <linux/types.h>
 
@@ -14,6 +14,10 @@
 #define HYPERV_CPUID_ENLIGHTMENT_INFO           0x40000004
 #define HYPERV_CPUID_IMPLEMENT_LIMITS           0x40000005
 
+#define HYPERV_HYPERVISOR_PRESENT_BIT           0x80000000
+#define HYPERV_CPUID_MIN                        0x40000005
+#define HYPERV_CPUID_MAX                        0x4000ffff
+
 /*
  * Feature identification. EAX indicates which features are available
  * to the partition based upon the current partition privileges.
@@ -129,6 +133,9 @@
 /* MSR used to provide vcpu index */
 #define HV_X64_MSR_VP_INDEX                     0x40000002
 
+/* MSR used to read the per-partition time reference counter */
+#define HV_X64_MSR_TIME_REF_COUNT               0x40000020
+
 /* Define the virtual APIC registers */
 #define HV_X64_MSR_EOI                          0x40000070
 #define HV_X64_MSR_ICR                          0x40000071
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
index b78c0941e422..70abda7058c8 100644
--- a/arch/x86/include/asm/hypervisor.h
+++ b/arch/x86/include/asm/hypervisor.h
@@ -17,10 +17,33 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  */
-#ifndef ASM_X86__HYPERVISOR_H
-#define ASM_X86__HYPERVISOR_H
+#ifndef _ASM_X86_HYPERVISOR_H
+#define _ASM_X86_HYPERVISOR_H
 
 extern void init_hypervisor(struct cpuinfo_x86 *c);
 extern void init_hypervisor_platform(void);
 
+/*
+ * x86 hypervisor information
+ */
+struct hypervisor_x86 {
+        /* Hypervisor name */
+        const char      *name;
+
+        /* Detection routine */
+        bool            (*detect)(void);
+
+        /* Adjust CPU feature bits (run once per CPU) */
+        void            (*set_cpu_features)(struct cpuinfo_x86 *);
+
+        /* Platform setup (run once per boot) */
+        void            (*init_platform)(void);
+};
+
+extern const struct hypervisor_x86 *x86_hyper;
+
+/* Recognized hypervisors */
+extern const struct hypervisor_x86 x86_hyper_vmware;
+extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
+
 #endif
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
new file mode 100644
index 000000000000..79ce5685ab64
--- /dev/null
+++ b/arch/x86/include/asm/mshyperv.h
@@ -0,0 +1,14 @@
+#ifndef _ASM_X86_MSHYPER_H
+#define _ASM_X86_MSHYPER_H
+
+#include <linux/types.h>
+#include <asm/hyperv.h>
+
+struct ms_hyperv_info {
+        u32 features;
+        u32 hints;
+};
+
+extern struct ms_hyperv_info ms_hyperv;
+
+#endif
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 32428b410b55..c71a12d960d4 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -113,7 +113,6 @@ struct cpuinfo_x86 {
         /* Index into per_cpu list: */
         u16                     cpu_index;
 #endif
-        unsigned int            x86_hyper_vendor;
 } __attribute__((__aligned__(SMP_CACHE_BYTES)));
 
 #define X86_VENDOR_INTEL        0
@@ -127,9 +126,6 @@ struct cpuinfo_x86 {
 
 #define X86_VENDOR_UNKNOWN      0xff
 
-#define X86_HYPER_VENDOR_NONE  0
-#define X86_HYPER_VENDOR_VMWARE 1
-
 /*
  * capabilities of CPUs
  */
diff --git a/arch/x86/include/asm/vmware.h b/arch/x86/include/asm/vmware.h
deleted file mode 100644
index e49ed6d2fd4e..000000000000
--- a/arch/x86/include/asm/vmware.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (C) 2008, VMware, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-#ifndef ASM_X86__VMWARE_H
-#define ASM_X86__VMWARE_H
-
-extern void vmware_platform_setup(void);
-extern int vmware_platform(void);
-extern void vmware_set_feature_bits(struct cpuinfo_x86 *c);
-
-#endif
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index c202b62f3671..3a785da34b6f 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -14,7 +14,7 @@ CFLAGS_common.o		:= $(nostackp)
 
 obj-y                   := intel_cacheinfo.o addon_cpuid_features.o
 obj-y                   += proc.o capflags.o powerflags.o common.o
-obj-y                   += vmware.o hypervisor.o sched.o
+obj-y                   += vmware.o hypervisor.o sched.o mshyperv.o
 
 obj-$(CONFIG_X86_32)    += bugs.o cmpxchg.o
 obj-$(CONFIG_X86_64)    += bugs_64.o
diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index 97ad79cdf688..10fa5684a662 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -30,12 +30,14 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
         const struct cpuid_bit *cb;
 
         static const struct cpuid_bit __cpuinitconst cpuid_bits[] = {
-                { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
-                { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 },
-                { X86_FEATURE_NPT,   CR_EDX, 0, 0x8000000a },
-                { X86_FEATURE_LBRV,  CR_EDX, 1, 0x8000000a },
-                { X86_FEATURE_SVML,  CR_EDX, 2, 0x8000000a },
-                { X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a },
+                { X86_FEATURE_IDA,              CR_EAX, 1, 0x00000006 },
+                { X86_FEATURE_ARAT,             CR_EAX, 2, 0x00000006 },
+                { X86_FEATURE_APERFMPERF,       CR_ECX, 0, 0x00000006 },
+                { X86_FEATURE_CPB,              CR_EDX, 9, 0x80000007 },
+                { X86_FEATURE_NPT,              CR_EDX, 0, 0x8000000a },
+                { X86_FEATURE_LBRV,             CR_EDX, 1, 0x8000000a },
+                { X86_FEATURE_SVML,             CR_EDX, 2, 0x8000000a },
+                { X86_FEATURE_NRIPS,            CR_EDX, 3, 0x8000000a },
                 { 0, 0, 0, 0 }
         };
 
diff --git a/arch/x86/kernel/cpu/cpufreq/Makefile b/arch/x86/kernel/cpu/cpufreq/Makefile
index 1840c0a5170b..bd54bf67e6fb 100644
--- a/arch/x86/kernel/cpu/cpufreq/Makefile
+++ b/arch/x86/kernel/cpu/cpufreq/Makefile
@@ -2,8 +2,8 @@
 # K8 systems. ACPI is preferred to all other hardware-specific drivers.
 # speedstep-* is preferred over p4-clockmod.
 
-obj-$(CONFIG_X86_POWERNOW_K8)           += powernow-k8.o
-obj-$(CONFIG_X86_ACPI_CPUFREQ)          += acpi-cpufreq.o
+obj-$(CONFIG_X86_POWERNOW_K8)           += powernow-k8.o mperf.o
+obj-$(CONFIG_X86_ACPI_CPUFREQ)          += acpi-cpufreq.o mperf.o
 obj-$(CONFIG_X86_PCC_CPUFREQ)           += pcc-cpufreq.o
 obj-$(CONFIG_X86_POWERNOW_K6)           += powernow-k6.o
 obj-$(CONFIG_X86_POWERNOW_K7)           += powernow-k7.o
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 459168083b77..1d3cddaa40ee 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -46,6 +46,7 @@
 #include <asm/msr.h>
 #include <asm/processor.h>
 #include <asm/cpufeature.h>
+#include "mperf.h"
 
 #define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
                 "acpi-cpufreq", msg)
@@ -71,8 +72,6 @@ struct acpi_cpufreq_data {
 
 static DEFINE_PER_CPU(struct acpi_cpufreq_data *, acfreq_data);
 
-static DEFINE_PER_CPU(struct aperfmperf, acfreq_old_perf);
-
 /* acpi_perf_data is a pointer to percpu data. */
 static struct acpi_processor_performance *acpi_perf_data;
 
@@ -240,45 +239,6 @@ static u32 get_cur_val(const struct cpumask *mask)
         return cmd.val;
 }
 
-/* Called via smp_call_function_single(), on the target CPU */
-static void read_measured_perf_ctrs(void *_cur)
-{
-        struct aperfmperf *am = _cur;
-
-        get_aperfmperf(am);
-}
-
-/*
- * Return the measured active (C0) frequency on this CPU since last call
- * to this function.
- * Input: cpu number
- * Return: Average CPU frequency in terms of max frequency (zero on error)
- *
- * We use IA32_MPERF and IA32_APERF MSRs to get the measured performance
- * over a period of time, while CPU is in C0 state.
- * IA32_MPERF counts at the rate of max advertised frequency
- * IA32_APERF counts at the rate of actual CPU frequency
- * Only IA32_APERF/IA32_MPERF ratio is architecturally defined and
- * no meaning should be associated with absolute values of these MSRs.
- */
-static unsigned int get_measured_perf(struct cpufreq_policy *policy,
-                                      unsigned int cpu)
-{
-        struct aperfmperf perf;
-        unsigned long ratio;
-        unsigned int retval;
-
-        if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
-                return 0;
-
-        ratio = calc_aperfmperf_ratio(&per_cpu(acfreq_old_perf, cpu), &perf);
-        per_cpu(acfreq_old_perf, cpu) = perf;
-
-        retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
-
-        return retval;
-}
-
 static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
 {
         struct acpi_cpufreq_data *data = per_cpu(acfreq_data, cpu);
@@ -702,7 +662,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
         /* Check for APERF/MPERF support in hardware */
         if (cpu_has(c, X86_FEATURE_APERFMPERF))
-                acpi_cpufreq_driver.getavg = get_measured_perf;
+                acpi_cpufreq_driver.getavg = cpufreq_get_measured_perf;
 
         dprintk("CPU%u - ACPI performance management activated.\n", cpu);
         for (i = 0; i < perf->state_count; i++)
diff --git a/arch/x86/kernel/cpu/cpufreq/mperf.c b/arch/x86/kernel/cpu/cpufreq/mperf.c
new file mode 100644
index 000000000000..911e193018ae
--- /dev/null
+++ b/arch/x86/kernel/cpu/cpufreq/mperf.c
@@ -0,0 +1,51 @@
+#include <linux/kernel.h>
+#include <linux/smp.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/cpufreq.h>
+#include <linux/slab.h>
+
+#include "mperf.h"
+
+static DEFINE_PER_CPU(struct aperfmperf, acfreq_old_perf);
+
+/* Called via smp_call_function_single(), on the target CPU */
+static void read_measured_perf_ctrs(void *_cur)
+{
+        struct aperfmperf *am = _cur;
+
+        get_aperfmperf(am);
+}
+
+/*
+ * Return the measured active (C0) frequency on this CPU since last call
+ * to this function.
+ * Input: cpu number
+ * Return: Average CPU frequency in terms of max frequency (zero on error)
+ *
+ * We use IA32_MPERF and IA32_APERF MSRs to get the measured performance
+ * over a period of time, while CPU is in C0 state.
+ * IA32_MPERF counts at the rate of max advertised frequency
+ * IA32_APERF counts at the rate of actual CPU frequency
+ * Only IA32_APERF/IA32_MPERF ratio is architecturally defined and
+ * no meaning should be associated with absolute values of these MSRs.
+ */
+unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
+                                        unsigned int cpu)
+{
+        struct aperfmperf perf;
+        unsigned long ratio;
+        unsigned int retval;
+
+        if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
+                return 0;
+
+        ratio = calc_aperfmperf_ratio(&per_cpu(acfreq_old_perf, cpu), &perf);
+        per_cpu(acfreq_old_perf, cpu) = perf;
+
+        retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
+
+        return retval;
+}
+EXPORT_SYMBOL_GPL(cpufreq_get_measured_perf);
+MODULE_LICENSE("GPL");
diff --git a/arch/x86/kernel/cpu/cpufreq/mperf.h b/arch/x86/kernel/cpu/cpufreq/mperf.h
new file mode 100644
index 000000000000..5dbf2950dc22
--- /dev/null
+++ b/arch/x86/kernel/cpu/cpufreq/mperf.h
@@ -0,0 +1,9 @@
+/*
+ *  (c) 2010 Advanced Micro Devices, Inc.
+ *  Your use of this code is subject to the terms and conditions of the
+ *  GNU general public license version 2. See "COPYING" or
+ *  http://www.gnu.org/licenses/gpl.html
+ */
+
+unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
+                                        unsigned int cpu);
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index b6215b9798e2..6f3dc8fbbfdc 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1,6 +1,5 @@
-
 /*
- *   (c) 2003-2006 Advanced Micro Devices, Inc.
+ *   (c) 2003-2010 Advanced Micro Devices, Inc.
  *  Your use of this code is subject to the terms and conditions of the
  *  GNU general public license version 2. See "COPYING" or
  *  http://www.gnu.org/licenses/gpl.html
@@ -46,6 +45,7 @@
 #define PFX "powernow-k8: "
 #define VERSION "version 2.20.00"
 #include "powernow-k8.h"
+#include "mperf.h"
 
 /* serialize freq changes  */
 static DEFINE_MUTEX(fidvid_mutex);
@@ -54,6 +54,12 @@ static DEFINE_PER_CPU(struct powernow_k8_data *, powernow_data);
 
 static int cpu_family = CPU_OPTERON;
 
+/* core performance boost */
+static bool cpb_capable, cpb_enabled;
+static struct msr __percpu *msrs;
+
+static struct cpufreq_driver cpufreq_amd64_driver;
+
 #ifndef CONFIG_SMP
 static inline const struct cpumask *cpu_core_mask(int cpu)
 {
@@ -1249,6 +1255,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
         struct powernow_k8_data *data;
         struct init_on_cpu init_on_cpu;
         int rc;
+        struct cpuinfo_x86 *c = &cpu_data(pol->cpu);
 
         if (!cpu_online(pol->cpu))
                 return -ENODEV;
@@ -1323,6 +1330,10 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                 return -EINVAL;
         }
 
+        /* Check for APERF/MPERF support in hardware */
+        if (cpu_has(c, X86_FEATURE_APERFMPERF))
+                cpufreq_amd64_driver.getavg = cpufreq_get_measured_perf;
+
         cpufreq_frequency_table_get_attr(data->powernow_table, pol->cpu);
 
         if (cpu_family == CPU_HW_PSTATE)
@@ -1394,8 +1405,77 @@ out:
         return khz;
 }
 
+static void _cpb_toggle_msrs(bool t)
+{
+        int cpu;
+
+        get_online_cpus();
+
+        rdmsr_on_cpus(cpu_online_mask, MSR_K7_HWCR, msrs);
+
+        for_each_cpu(cpu, cpu_online_mask) {
+                struct msr *reg = per_cpu_ptr(msrs, cpu);
+                if (t)
+                        reg->l &= ~BIT(25);
+                else
+                        reg->l |= BIT(25);
+        }
+        wrmsr_on_cpus(cpu_online_mask, MSR_K7_HWCR, msrs);
+
+        put_online_cpus();
+}
+
+/*
+ * Switch on/off core performance boosting.
+ *
+ * 0=disable
+ * 1=enable.
+ */
+static void cpb_toggle(bool t)
+{
+        if (!cpb_capable)
+                return;
+
+        if (t && !cpb_enabled) {
+                cpb_enabled = true;
+                _cpb_toggle_msrs(t);
+                printk(KERN_INFO PFX "Core Boosting enabled.\n");
+        } else if (!t && cpb_enabled) {
+                cpb_enabled = false;
+                _cpb_toggle_msrs(t);
+                printk(KERN_INFO PFX "Core Boosting disabled.\n");
+        }
+}
+
+static ssize_t store_cpb(struct cpufreq_policy *policy, const char *buf,
+                                 size_t count)
+{
+        int ret = -EINVAL;
+        unsigned long val = 0;
+
+        ret = strict_strtoul(buf, 10, &val);
+        if (!ret && (val == 0 || val == 1) && cpb_capable)
+                cpb_toggle(val);
+        else
+                return -EINVAL;
+
+        return count;
+}
+
+static ssize_t show_cpb(struct cpufreq_policy *policy, char *buf)
+{
+        return sprintf(buf, "%u\n", cpb_enabled);
+}
+
+#define define_one_rw(_name) \
+static struct freq_attr _name = \
+__ATTR(_name, 0644, show_##_name, store_##_name)
+
+define_one_rw(cpb);
+
 static struct freq_attr *powernow_k8_attr[] = {
         &cpufreq_freq_attr_scaling_available_freqs,
+        &cpb,
         NULL,
 };
 
@@ -1411,10 +1491,51 @@ static struct cpufreq_driver cpufreq_amd64_driver = {
         .attr           = powernow_k8_attr,
 };
 
+/*
+ * Clear the boost-disable flag on the CPU_DOWN path so that this cpu
+ * cannot block the remaining ones from boosting. On the CPU_UP path we
+ * simply keep the boost-disable flag in sync with the current global
+ * state.
+ */
+static int __cpuinit cpb_notify(struct notifier_block *nb, unsigned long action,
+                                void *hcpu)
+{
+        unsigned cpu = (long)hcpu;
+        u32 lo, hi;
+
+        switch (action) {
+        case CPU_UP_PREPARE:
+        case CPU_UP_PREPARE_FROZEN:
+
+                if (!cpb_enabled) {
+                        rdmsr_on_cpu(cpu, MSR_K7_HWCR, &lo, &hi);
+                        lo |= BIT(25);
+                        wrmsr_on_cpu(cpu, MSR_K7_HWCR, lo, hi);
+                }
+                break;
+
+        case CPU_DOWN_PREPARE:
+        case CPU_DOWN_PREPARE_FROZEN:
+                rdmsr_on_cpu(cpu, MSR_K7_HWCR, &lo, &hi);
+                lo &= ~BIT(25);
+                wrmsr_on_cpu(cpu, MSR_K7_HWCR, lo, hi);
+                break;
+
+        default:
+                break;
+        }
+
+        return NOTIFY_OK;
+}
+
+static struct notifier_block __cpuinitdata cpb_nb = {
+        .notifier_call          = cpb_notify,
+};
+
 /* driver entry point for init */
 static int __cpuinit powernowk8_init(void)
 {
-        unsigned int i, supported_cpus = 0;
+        unsigned int i, supported_cpus = 0, cpu;
 
         for_each_online_cpu(i) {
                 int rc;
@@ -1423,15 +1544,36 @@ static int __cpuinit powernowk8_init(void)
                         supported_cpus++;
         }
 
-        if (supported_cpus == num_online_cpus()) {
-                printk(KERN_INFO PFX "Found %d %s "
-                        "processors (%d cpu cores) (" VERSION ")\n",
-                        num_online_nodes(),
-                        boot_cpu_data.x86_model_id, supported_cpus);
-                return cpufreq_register_driver(&cpufreq_amd64_driver);
+        if (supported_cpus != num_online_cpus())
+                return -ENODEV;
+
+        printk(KERN_INFO PFX "Found %d %s (%d cpu cores) (" VERSION ")\n",
+                num_online_nodes(), boot_cpu_data.x86_model_id, supported_cpus);
+
+        if (boot_cpu_has(X86_FEATURE_CPB)) {
+
+                cpb_capable = true;
+
+                register_cpu_notifier(&cpb_nb);
+
+                msrs = msrs_alloc();
+                if (!msrs) {
+                        printk(KERN_ERR "%s: Error allocating msrs!\n", __func__);
+                        return -ENOMEM;
+                }
+
+                rdmsr_on_cpus(cpu_online_mask, MSR_K7_HWCR, msrs);
+
+                for_each_cpu(cpu, cpu_online_mask) {
+                        struct msr *reg = per_cpu_ptr(msrs, cpu);
+                        cpb_enabled |= !(!!(reg->l & BIT(25)));
+                }
+
+                printk(KERN_INFO PFX "Core Performance Boosting: %s.\n",
+                        (cpb_enabled ? "on" : "off"));
         }
 
-        return -ENODEV;
+        return cpufreq_register_driver(&cpufreq_amd64_driver);
 }
 
 /* driver entry point for term */
@@ -1439,6 +1581,13 @@ static void __exit powernowk8_exit(void)
 {
         dprintk("exit\n");
 
+        if (boot_cpu_has(X86_FEATURE_CPB)) {
+                msrs_free(msrs);
+                msrs = NULL;
+
+                unregister_cpu_notifier(&cpb_nb);
+        }
+
         cpufreq_unregister_driver(&cpufreq_amd64_driver);
 }
 
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
index 02ce824073cb..df3529b1c02d 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
@@ -5,7 +5,6 @@
  *  http://www.gnu.org/licenses/gpl.html
  */
 
-
 enum pstate {
         HW_PSTATE_INVALID = 0xff,
         HW_PSTATE_0 = 0,
@@ -55,7 +54,6 @@ struct powernow_k8_data {
         struct cpumask *available_cores;
 };
 
-
 /* processor's cpuid instruction support */
 #define CPUID_PROCESSOR_SIGNATURE       1       /* function 1 */
 #define CPUID_XFAM                      0x0ff00000      /* extended family */
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index 08be922de33a..dd531cc56a8f 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -21,37 +21,55 @@
  *
  */
 
+#include <linux/module.h>
 #include <asm/processor.h>
-#include <asm/vmware.h>
 #include <asm/hypervisor.h>
 
-static inline void __cpuinit
-detect_hypervisor_vendor(struct cpuinfo_x86 *c)
+/*
+ * Hypervisor detect order.  This is specified explicitly here because
+ * some hypervisors might implement compatibility modes for other
+ * hypervisors and therefore need to be detected in specific sequence.
+ */
+static const __initconst struct hypervisor_x86 * const hypervisors[] =
 {
-        if (vmware_platform())
-                c->x86_hyper_vendor = X86_HYPER_VENDOR_VMWARE;
-        else
-                c->x86_hyper_vendor = X86_HYPER_VENDOR_NONE;
-}
+        &x86_hyper_vmware,
+        &x86_hyper_ms_hyperv,
+};
 
-static inline void __cpuinit
-hypervisor_set_feature_bits(struct cpuinfo_x86 *c)
+const struct hypervisor_x86 *x86_hyper;
+EXPORT_SYMBOL(x86_hyper);
+
+static inline void __init
+detect_hypervisor_vendor(void)
 {
-        if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE) {
-                vmware_set_feature_bits(c);
-                return;
+        const struct hypervisor_x86 *h, * const *p;
+
+        for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {
+                h = *p;
+                if (h->detect()) {
+                        x86_hyper = h;
+                        printk(KERN_INFO "Hypervisor detected: %s\n", h->name);
+                        break;
+                }
         }
 }
 
 void __cpuinit init_hypervisor(struct cpuinfo_x86 *c)
 {
-        detect_hypervisor_vendor(c);
-        hypervisor_set_feature_bits(c);
+        if (x86_hyper && x86_hyper->set_cpu_features)
+                x86_hyper->set_cpu_features(c);
 }
 
 void __init init_hypervisor_platform(void)
 {
+
+        detect_hypervisor_vendor();
+
+        if (!x86_hyper)
+                return;
+
         init_hypervisor(&boot_cpu_data);
-        if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE)
-                vmware_platform_setup();
+
+        if (x86_hyper->init_platform)
+                x86_hyper->init_platform();
 }
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index f5e5390d3459..85f69cdeae10 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -372,12 +372,6 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                         set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
         }
 
-        if (c->cpuid_level > 6) {
-                unsigned ecx = cpuid_ecx(6);
-                if (ecx & 0x01)
-                        set_cpu_cap(c, X86_FEATURE_APERFMPERF);
-        }
-
         if (cpu_has_xmm2)
                 set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
         if (cpu_has_ds) {
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 95962a93f99a..33eae2062cf5 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -148,13 +148,19 @@ union _cpuid4_leaf_ecx {
         u32 full;
 };
 
+struct amd_l3_cache {
+        struct   pci_dev *dev;
+        bool     can_disable;
+        unsigned indices;
+        u8       subcaches[4];
+};
+
 struct _cpuid4_info {
         union _cpuid4_leaf_eax eax;
         union _cpuid4_leaf_ebx ebx;
         union _cpuid4_leaf_ecx ecx;
         unsigned long size;
-        bool can_disable;
-        unsigned int l3_indices;
+        struct amd_l3_cache *l3;
         DECLARE_BITMAP(shared_cpu_map, NR_CPUS);
 };
 
@@ -164,8 +170,7 @@ struct _cpuid4_info_regs {
         union _cpuid4_leaf_ebx ebx;
         union _cpuid4_leaf_ecx ecx;
         unsigned long size;
-        bool can_disable;
-        unsigned int l3_indices;
+        struct amd_l3_cache *l3;
 };
 
 unsigned short                  num_cache_leaves;
@@ -302,91 +307,163 @@ struct _cache_attr {
 };
 
 #ifdef CONFIG_CPU_SUP_AMD
-static unsigned int __cpuinit amd_calc_l3_indices(void)
+
+/*
+ * L3 cache descriptors
+ */
+static struct amd_l3_cache **__cpuinitdata l3_caches;
+
+static void __cpuinit amd_calc_l3_indices(struct amd_l3_cache *l3)
 {
-        /*
-         * We're called over smp_call_function_single() and therefore
-         * are on the correct cpu.
-         */
-        int cpu = smp_processor_id();
-        int node = cpu_to_node(cpu);
-        struct pci_dev *dev = node_to_k8_nb_misc(node);
         unsigned int sc0, sc1, sc2, sc3;
         u32 val = 0;
 
-        pci_read_config_dword(dev, 0x1C4, &val);
+        pci_read_config_dword(l3->dev, 0x1C4, &val);
 
         /* calculate subcache sizes */
-        sc0 = !(val & BIT(0));
-        sc1 = !(val & BIT(4));
-        sc2 = !(val & BIT(8))  + !(val & BIT(9));
-        sc3 = !(val & BIT(12)) + !(val & BIT(13));
+        l3->subcaches[0] = sc0 = !(val & BIT(0));
+        l3->subcaches[1] = sc1 = !(val & BIT(4));
+        l3->subcaches[2] = sc2 = !(val & BIT(8))  + !(val & BIT(9));
+        l3->subcaches[3] = sc3 = !(val & BIT(12)) + !(val & BIT(13));
+
+        l3->indices = (max(max(max(sc0, sc1), sc2), sc3) << 10) - 1;
+}
+
+static struct amd_l3_cache * __cpuinit amd_init_l3_cache(int node)
+{
+        struct amd_l3_cache *l3;
+        struct pci_dev *dev = node_to_k8_nb_misc(node);
 
-        return (max(max(max(sc0, sc1), sc2), sc3) << 10) - 1;
+        l3 = kzalloc(sizeof(struct amd_l3_cache), GFP_ATOMIC);
+        if (!l3) {
+                printk(KERN_WARNING "Error allocating L3 struct\n");
+                return NULL;
+        }
+
+        l3->dev = dev;
+
+        amd_calc_l3_indices(l3);
+
+        return l3;
 }
 
 static void __cpuinit
 amd_check_l3_disable(int index, struct _cpuid4_info_regs *this_leaf)
 {
-        if (index < 3)
+        int node;
+
+        if (boot_cpu_data.x86 != 0x10)
                 return;
 
-        if (boot_cpu_data.x86 == 0x11)
+        if (index < 3)
                 return;
 
         /* see errata #382 and #388 */
-        if ((boot_cpu_data.x86 == 0x10) &&
-            ((boot_cpu_data.x86_model < 0x8) ||
-             (boot_cpu_data.x86_mask  < 0x1)))
+        if (boot_cpu_data.x86_model < 0x8)
                 return;
 
+        if ((boot_cpu_data.x86_model == 0x8 ||
+             boot_cpu_data.x86_model == 0x9)
+                &&
+             boot_cpu_data.x86_mask < 0x1)
+                        return;
+
         /* not in virtualized environments */
         if (num_k8_northbridges == 0)
                 return;
 
-        this_leaf->can_disable = true;
-        this_leaf->l3_indices  = amd_calc_l3_indices();
+        /*
+         * Strictly speaking, the amount in @size below is leaked since it is
+         * never freed but this is done only on shutdown so it doesn't matter.
+         */
+        if (!l3_caches) {
+                int size = num_k8_northbridges * sizeof(struct amd_l3_cache *);
+
+                l3_caches = kzalloc(size, GFP_ATOMIC);
+                if (!l3_caches)
+                        return;
+        }
+
+        node = amd_get_nb_id(smp_processor_id());
+
+        if (!l3_caches[node]) {
+                l3_caches[node] = amd_init_l3_cache(node);
+                l3_caches[node]->can_disable = true;
+        }
+
+        WARN_ON(!l3_caches[node]);
+
+        this_leaf->l3 = l3_caches[node];
 }
 
 static ssize_t show_cache_disable(struct _cpuid4_info *this_leaf, char *buf,
-                                  unsigned int index)
+                                  unsigned int slot)
 {
-        int cpu = cpumask_first(to_cpumask(this_leaf->shared_cpu_map));
-        int node = amd_get_nb_id(cpu);
-        struct pci_dev *dev = node_to_k8_nb_misc(node);
+        struct pci_dev *dev = this_leaf->l3->dev;
         unsigned int reg = 0;
 
-        if (!this_leaf->can_disable)
+        if (!this_leaf->l3 || !this_leaf->l3->can_disable)
                 return -EINVAL;
 
         if (!dev)
                 return -EINVAL;
 
-        pci_read_config_dword(dev, 0x1BC + index * 4, &reg);
+        pci_read_config_dword(dev, 0x1BC + slot * 4, &reg);
         return sprintf(buf, "0x%08x\n", reg);
 }
 
-#define SHOW_CACHE_DISABLE(index)                                       \
+#define SHOW_CACHE_DISABLE(slot)                                        \
 static ssize_t                                                          \
-show_cache_disable_##index(struct _cpuid4_info *this_leaf, char *buf)   \
+show_cache_disable_##slot(struct _cpuid4_info *this_leaf, char *buf)    \
 {                                                                       \
-        return show_cache_disable(this_leaf, buf, index);               \
+        return show_cache_disable(this_leaf, buf, slot);                \
 }
 SHOW_CACHE_DISABLE(0)
 SHOW_CACHE_DISABLE(1)
 
+static void amd_l3_disable_index(struct amd_l3_cache *l3, int cpu,
+                                 unsigned slot, unsigned long idx)
+{
+        int i;
+
+        idx |= BIT(30);
+
+        /*
+         *  disable index in all 4 subcaches
+         */
+        for (i = 0; i < 4; i++) {
+                u32 reg = idx | (i << 20);
+
+                if (!l3->subcaches[i])
+                        continue;
+
+                pci_write_config_dword(l3->dev, 0x1BC + slot * 4, reg);
+
+                /*
+                 * We need to WBINVD on a core on the node containing the L3
+                 * cache which indices we disable therefore a simple wbinvd()
+                 * is not sufficient.
+                 */
+                wbinvd_on_cpu(cpu);
+
+                reg |= BIT(31);
+                pci_write_config_dword(l3->dev, 0x1BC + slot * 4, reg);
+        }
+}
+
+
 static ssize_t store_cache_disable(struct _cpuid4_info *this_leaf,
-        const char *buf, size_t count, unsigned int index)
+                                   const char *buf, size_t count,
+                                   unsigned int slot)
 {
+        struct pci_dev *dev = this_leaf->l3->dev;
         int cpu = cpumask_first(to_cpumask(this_leaf->shared_cpu_map));
-        int node = amd_get_nb_id(cpu);
-        struct pci_dev *dev = node_to_k8_nb_misc(node);
         unsigned long val = 0;
 
 #define SUBCACHE_MASK   (3UL << 20)
 #define SUBCACHE_INDEX  0xfff
 
-        if (!this_leaf->can_disable)
+        if (!this_leaf->l3 || !this_leaf->l3->can_disable)
                 return -EINVAL;
 
         if (!capable(CAP_SYS_ADMIN))
@@ -400,26 +477,20 @@ static ssize_t store_cache_disable(struct _cpuid4_info *this_leaf,
 
         /* do not allow writes outside of allowed bits */
         if ((val & ~(SUBCACHE_MASK | SUBCACHE_INDEX)) ||
-            ((val & SUBCACHE_INDEX) > this_leaf->l3_indices))
+            ((val & SUBCACHE_INDEX) > this_leaf->l3->indices))
                 return -EINVAL;
 
-        val |= BIT(30);
-        pci_write_config_dword(dev, 0x1BC + index * 4, val);
-        /*
-         * We need to WBINVD on a core on the node containing the L3 cache which
-         * indices we disable therefore a simple wbinvd() is not sufficient.
-         */
-        wbinvd_on_cpu(cpu);
-        pci_write_config_dword(dev, 0x1BC + index * 4, val | BIT(31));
+        amd_l3_disable_index(this_leaf->l3, cpu, slot, val);
+
         return count;
 }
 
-#define STORE_CACHE_DISABLE(index)                                      \
+#define STORE_CACHE_DISABLE(slot)                                       \
 static ssize_t                                                          \
-store_cache_disable_##index(struct _cpuid4_info *this_leaf,             \
+store_cache_disable_##slot(struct _cpuid4_info *this_leaf,              \
                             const char *buf, size_t count)              \
 {                                                                       \
-        return store_cache_disable(this_leaf, buf, count, index);       \
+        return store_cache_disable(this_leaf, buf, count, slot);        \
 }
 STORE_CACHE_DISABLE(0)
 STORE_CACHE_DISABLE(1)
@@ -447,8 +518,7 @@ __cpuinit cpuid4_cache_lookup_regs(int index,
 
         if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
                 amd_cpuid4(index, &eax, &ebx, &ecx);
-                if (boot_cpu_data.x86 >= 0x10)
-                        amd_check_l3_disable(index, this_leaf);
+                amd_check_l3_disable(index, this_leaf);
         } else {
                 cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
         }
@@ -705,6 +775,7 @@ static void __cpuinit free_cache_attributes(unsigned int cpu)
         for (i = 0; i < num_cache_leaves; i++)
                 cache_remove_shared_cpu_map(cpu, i);
 
+        kfree(per_cpu(ici_cpuid4_info, cpu)->l3);
         kfree(per_cpu(ici_cpuid4_info, cpu));
         per_cpu(ici_cpuid4_info, cpu) = NULL;
 }
@@ -989,7 +1060,7 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
 
                 this_leaf = CPUID4_INFO_IDX(cpu, i);
 
-                if (this_leaf->can_disable)
+                if (this_leaf->l3 && this_leaf->l3->can_disable)
                         ktype_cache.default_attrs = default_l3_attrs;
                 else
                         ktype_cache.default_attrs = default_attrs;
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
new file mode 100644
index 000000000000..16f41bbe46b6
--- /dev/null
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -0,0 +1,55 @@
+/*
+ * HyperV  Detection code.
+ *
+ * Copyright (C) 2010, Novell, Inc.
+ * Author : K. Y. Srinivasan <ksrinivasan@novell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <asm/processor.h>
+#include <asm/hypervisor.h>
+#include <asm/hyperv.h>
+#include <asm/mshyperv.h>
+
+struct ms_hyperv_info ms_hyperv;
+
+static bool __init ms_hyperv_platform(void)
+{
+        u32 eax;
+        u32 hyp_signature[3];
+
+        if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))
+                return false;
+
+        cpuid(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS,
+              &eax, &hyp_signature[0], &hyp_signature[1], &hyp_signature[2]);
+
+        return eax >= HYPERV_CPUID_MIN &&
+                eax <= HYPERV_CPUID_MAX &&
+                !memcmp("Microsoft Hv", hyp_signature, 12);
+}
+
+static void __init ms_hyperv_init_platform(void)
+{
+        /*
+         * Extract the features and hints
+         */
+        ms_hyperv.features = cpuid_eax(HYPERV_CPUID_FEATURES);
+        ms_hyperv.hints    = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO);
+
+        printk(KERN_INFO "HyperV: features 0x%x, hints 0x%x\n",
+               ms_hyperv.features, ms_hyperv.hints);
+}
+
+const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
+        .name                   = "Microsoft HyperV",
+        .detect                 = ms_hyperv_platform,
+        .init_platform          = ms_hyperv_init_platform,
+};
+EXPORT_SYMBOL(x86_hyper_ms_hyperv);
diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index dfdb4dba2320..b9d1ff588445 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -24,8 +24,8 @@
 #include <linux/dmi.h>
 #include <linux/module.h>
 #include <asm/div64.h>
-#include <asm/vmware.h>
 #include <asm/x86_init.h>
+#include <asm/hypervisor.h>
 
 #define CPUID_VMWARE_INFO_LEAF  0x40000000
 #define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -65,7 +65,7 @@ static unsigned long vmware_get_tsc_khz(void)
         return tsc_hz;
 }
 
-void __init vmware_platform_setup(void)
+static void __init vmware_platform_setup(void)
 {
         uint32_t eax, ebx, ecx, edx;
 
@@ -83,26 +83,22 @@ void __init vmware_platform_setup(void)
  * serial key should be enough, as this will always have a VMware
  * specific string when running under VMware hypervisor.
  */
-int vmware_platform(void)
+static bool __init vmware_platform(void)
 {
         if (cpu_has_hypervisor) {
-                unsigned int eax, ebx, ecx, edx;
-                char hyper_vendor_id[13];
-
-                cpuid(CPUID_VMWARE_INFO_LEAF, &eax, &ebx, &ecx, &edx);
-                memcpy(hyper_vendor_id + 0, &ebx, 4);
-                memcpy(hyper_vendor_id + 4, &ecx, 4);
-                memcpy(hyper_vendor_id + 8, &edx, 4);
-                hyper_vendor_id[12] = '\0';
-                if (!strcmp(hyper_vendor_id, "VMwareVMware"))
-                        return 1;
+                unsigned int eax;
+                unsigned int hyper_vendor_id[3];
+
+                cpuid(CPUID_VMWARE_INFO_LEAF, &eax, &hyper_vendor_id[0],
+                      &hyper_vendor_id[1], &hyper_vendor_id[2]);
+                if (!memcmp(hyper_vendor_id, "VMwareVMware", 12))
+                        return true;
         } else if (dmi_available && dmi_name_in_serial("VMware") &&
                    __vmware_platform())
-                return 1;
+                return true;
 
-        return 0;
+        return false;
 }
-EXPORT_SYMBOL(vmware_platform);
 
 /*
  * VMware hypervisor takes care of exporting a reliable TSC to the guest.
@@ -116,8 +112,16 @@ EXPORT_SYMBOL(vmware_platform);
  * so that the kernel could just trust the hypervisor with providing a
  * reliable virtual TSC that is suitable for timekeeping.
  */
-void __cpuinit vmware_set_feature_bits(struct cpuinfo_x86 *c)
+static void __cpuinit vmware_set_cpu_features(struct cpuinfo_x86 *c)
 {
         set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
         set_cpu_cap(c, X86_FEATURE_TSC_RELIABLE);
 }
+
+const __refconst struct hypervisor_x86 x86_hyper_vmware = {
+        .name                   = "VMware",
+        .detect                 = vmware_platform,
+        .set_cpu_features       = vmware_set_cpu_features,
+        .init_platform          = vmware_platform_setup,
+};
+EXPORT_SYMBOL(x86_hyper_vmware);
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 75d293eeb3ee..063b2184caf5 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -662,32 +662,20 @@ static ssize_t show_bios_limit(struct cpufreq_policy *policy, char *buf)
         return sprintf(buf, "%u\n", policy->cpuinfo.max_freq);
 }
 
-#define define_one_ro(_name) \
-static struct freq_attr _name = \
-__ATTR(_name, 0444, show_##_name, NULL)
-
-#define define_one_ro0400(_name) \
-static struct freq_attr _name = \
-__ATTR(_name, 0400, show_##_name, NULL)
-
-#define define_one_rw(_name) \
-static struct freq_attr _name = \
-__ATTR(_name, 0644, show_##_name, store_##_name)
-
-define_one_ro0400(cpuinfo_cur_freq);
-define_one_ro(cpuinfo_min_freq);
-define_one_ro(cpuinfo_max_freq);
-define_one_ro(cpuinfo_transition_latency);
-define_one_ro(scaling_available_governors);
-define_one_ro(scaling_driver);
-define_one_ro(scaling_cur_freq);
-define_one_ro(bios_limit);
-define_one_ro(related_cpus);
-define_one_ro(affected_cpus);
-define_one_rw(scaling_min_freq);
-define_one_rw(scaling_max_freq);
-define_one_rw(scaling_governor);
-define_one_rw(scaling_setspeed);
+cpufreq_freq_attr_ro_perm(cpuinfo_cur_freq, 0400);
+cpufreq_freq_attr_ro(cpuinfo_min_freq);
+cpufreq_freq_attr_ro(cpuinfo_max_freq);
+cpufreq_freq_attr_ro(cpuinfo_transition_latency);
+cpufreq_freq_attr_ro(scaling_available_governors);
+cpufreq_freq_attr_ro(scaling_driver);
+cpufreq_freq_attr_ro(scaling_cur_freq);
+cpufreq_freq_attr_ro(bios_limit);
+cpufreq_freq_attr_ro(related_cpus);
+cpufreq_freq_attr_ro(affected_cpus);
+cpufreq_freq_attr_rw(scaling_min_freq);
+cpufreq_freq_attr_rw(scaling_max_freq);
+cpufreq_freq_attr_rw(scaling_governor);
+cpufreq_freq_attr_rw(scaling_setspeed);
 
 static struct attribute *default_attrs[] = {
         &cpuinfo_min_freq.attr,
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 3a147874a465..526bfbf69611 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -178,12 +178,8 @@ static ssize_t show_sampling_rate_min(struct kobject *kobj,
         return sprintf(buf, "%u\n", min_sampling_rate);
 }
 
-#define define_one_ro(_name)            \
-static struct global_attr _name =       \
-__ATTR(_name, 0444, show_##_name, NULL)
-
-define_one_ro(sampling_rate_max);
-define_one_ro(sampling_rate_min);
+define_one_global_ro(sampling_rate_max);
+define_one_global_ro(sampling_rate_min);
 
 /* cpufreq_conservative Governor Tunables */
 #define show_one(file_name, object)                                     \
@@ -221,12 +217,8 @@ show_one_old(freq_step);
 show_one_old(sampling_rate_min);
 show_one_old(sampling_rate_max);
 
-#define define_one_ro_old(object, _name)        \
-static struct freq_attr object =                \
-__ATTR(_name, 0444, show_##_name##_old, NULL)
-
-define_one_ro_old(sampling_rate_min_old, sampling_rate_min);
-define_one_ro_old(sampling_rate_max_old, sampling_rate_max);
+cpufreq_freq_attr_ro_old(sampling_rate_min);
+cpufreq_freq_attr_ro_old(sampling_rate_max);
 
 /*** delete after deprecation time ***/
 
@@ -364,16 +356,12 @@ static ssize_t store_freq_step(struct kobject *a, struct attribute *b,
         return count;
 }
 
-#define define_one_rw(_name) \
-static struct global_attr _name = \
-__ATTR(_name, 0644, show_##_name, store_##_name)
-
-define_one_rw(sampling_rate);
-define_one_rw(sampling_down_factor);
-define_one_rw(up_threshold);
-define_one_rw(down_threshold);
-define_one_rw(ignore_nice_load);
-define_one_rw(freq_step);
+define_one_global_rw(sampling_rate);
+define_one_global_rw(sampling_down_factor);
+define_one_global_rw(up_threshold);
+define_one_global_rw(down_threshold);
+define_one_global_rw(ignore_nice_load);
+define_one_global_rw(freq_step);
 
 static struct attribute *dbs_attributes[] = {
         &sampling_rate_max.attr,
@@ -409,16 +397,12 @@ write_one_old(down_threshold);
 write_one_old(ignore_nice_load);
 write_one_old(freq_step);
 
-#define define_one_rw_old(object, _name)        \
-static struct freq_attr object =                \
-__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old)
-
-define_one_rw_old(sampling_rate_old, sampling_rate);
-define_one_rw_old(sampling_down_factor_old, sampling_down_factor);
-define_one_rw_old(up_threshold_old, up_threshold);
-define_one_rw_old(down_threshold_old, down_threshold);
-define_one_rw_old(ignore_nice_load_old, ignore_nice_load);
-define_one_rw_old(freq_step_old, freq_step);
+cpufreq_freq_attr_rw_old(sampling_rate);
+cpufreq_freq_attr_rw_old(sampling_down_factor);
+cpufreq_freq_attr_rw_old(up_threshold);
+cpufreq_freq_attr_rw_old(down_threshold);
+cpufreq_freq_attr_rw_old(ignore_nice_load);
+cpufreq_freq_attr_rw_old(freq_step);
 
 static struct attribute *dbs_attributes_old[] = {
         &sampling_rate_max_old.attr,
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 8e9dbdc6c700..e1314212d8d4 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -246,12 +246,8 @@ static ssize_t show_sampling_rate_min(struct kobject *kobj,
         return sprintf(buf, "%u\n", min_sampling_rate);
 }
 
-#define define_one_ro(_name)            \
-static struct global_attr _name =       \
-__ATTR(_name, 0444, show_##_name, NULL)
-
-define_one_ro(sampling_rate_max);
-define_one_ro(sampling_rate_min);
+define_one_global_ro(sampling_rate_max);
+define_one_global_ro(sampling_rate_min);
 
 /* cpufreq_ondemand Governor Tunables */
 #define show_one(file_name, object)                                     \
@@ -287,12 +283,8 @@ show_one_old(powersave_bias);
 show_one_old(sampling_rate_min);
 show_one_old(sampling_rate_max);
 
-#define define_one_ro_old(object, _name)       \
-static struct freq_attr object =               \
-__ATTR(_name, 0444, show_##_name##_old, NULL)
-
-define_one_ro_old(sampling_rate_min_old, sampling_rate_min);
-define_one_ro_old(sampling_rate_max_old, sampling_rate_max);
+cpufreq_freq_attr_ro_old(sampling_rate_min);
+cpufreq_freq_attr_ro_old(sampling_rate_max);
 
 /*** delete after deprecation time ***/
 
@@ -406,15 +398,11 @@ static ssize_t store_powersave_bias(struct kobject *a, struct attribute *b,
         return count;
 }
 
-#define define_one_rw(_name) \
-static struct global_attr _name = \
-__ATTR(_name, 0644, show_##_name, store_##_name)
-
-define_one_rw(sampling_rate);
-define_one_rw(io_is_busy);
-define_one_rw(up_threshold);
-define_one_rw(ignore_nice_load);
-define_one_rw(powersave_bias);
+define_one_global_rw(sampling_rate);
+define_one_global_rw(io_is_busy);
+define_one_global_rw(up_threshold);
+define_one_global_rw(ignore_nice_load);
+define_one_global_rw(powersave_bias);
 
 static struct attribute *dbs_attributes[] = {
         &sampling_rate_max.attr,
@@ -447,14 +435,10 @@ write_one_old(up_threshold);
 write_one_old(ignore_nice_load);
 write_one_old(powersave_bias);
 
-#define define_one_rw_old(object, _name)       \
-static struct freq_attr object =               \
-__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old)
-
-define_one_rw_old(sampling_rate_old, sampling_rate);
-define_one_rw_old(up_threshold_old, up_threshold);
-define_one_rw_old(ignore_nice_load_old, ignore_nice_load);
-define_one_rw_old(powersave_bias_old, powersave_bias);
+cpufreq_freq_attr_rw_old(sampling_rate);
+cpufreq_freq_attr_rw_old(up_threshold);
+cpufreq_freq_attr_rw_old(ignore_nice_load);
+cpufreq_freq_attr_rw_old(powersave_bias);
 
 static struct attribute *dbs_attributes_old[] = {
        &sampling_rate_max_old.attr,
diff --git a/drivers/misc/vmware_balloon.c b/drivers/misc/vmware_balloon.c
index e7161c4e3798..db9cd0240c6f 100644
--- a/drivers/misc/vmware_balloon.c
+++ b/drivers/misc/vmware_balloon.c
@@ -41,7 +41,7 @@
 #include <linux/workqueue.h>
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
-#include <asm/vmware.h>
+#include <asm/hypervisor.h>
 
 MODULE_AUTHOR("VMware, Inc.");
 MODULE_DESCRIPTION("VMware Memory Control (Balloon) Driver");
@@ -767,7 +767,7 @@ static int __init vmballoon_init(void)
          * Check if we are running on VMware's hypervisor and bail out
          * if we are not.
          */
-        if (!vmware_platform())
+        if (x86_hyper != &x86_hyper_vmware)
                 return -ENODEV;
 
         vmballoon_wq = create_freezeable_workqueue("vmmemctl");
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 4de02b10007f..9f15150ce8d6 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -278,6 +278,27 @@ struct freq_attr {
         ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count);
 };
 
+#define cpufreq_freq_attr_ro(_name)             \
+static struct freq_attr _name =                 \
+__ATTR(_name, 0444, show_##_name, NULL)
+
+#define cpufreq_freq_attr_ro_perm(_name, _perm) \
+static struct freq_attr _name =                 \
+__ATTR(_name, _perm, show_##_name, NULL)
+
+#define cpufreq_freq_attr_ro_old(_name)         \
+static struct freq_attr _name##_old =           \
+__ATTR(_name, 0444, show_##_name##_old, NULL)
+
+#define cpufreq_freq_attr_rw(_name)             \
+static struct freq_attr _name =                 \
+__ATTR(_name, 0644, show_##_name, store_##_name)
+
+#define cpufreq_freq_attr_rw_old(_name)         \
+static struct freq_attr _name##_old =           \
+__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old)
+
+
 struct global_attr {
         struct attribute attr;
         ssize_t (*show)(struct kobject *kobj,
@@ -286,6 +307,15 @@ struct global_attr {
                          const char *c, size_t count);
 };
 
+#define define_one_global_ro(_name)             \
+static struct global_attr _name =               \
+__ATTR(_name, 0444, show_##_name, NULL)
+
+#define define_one_global_rw(_name)             \
+static struct global_attr _name =               \
+__ATTR(_name, 0644, show_##_name, store_##_name)
+
+
 /*********************************************************************
  *                        CPUFREQ 2.6. INTERFACE                     *
  *********************************************************************/