24 files changed, 224 insertions, 177 deletions

diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index 267ca48e1b6c..d51c7313cae8 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -3,6 +3,6 @@ obj-$(CONFIG_X86_IO_APIC)	+= earlyquirk.o
 obj-$(CONFIG_ACPI_SLEEP)        += sleep.o wakeup.o
 
 ifneq ($(CONFIG_ACPI_PROCESSOR),)
-obj-y                           += cstate.o
+obj-y                           += cstate.o processor.o
 endif
 
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 2111529dea77..79577f0ace98 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -248,10 +248,17 @@ acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
 
         acpi_table_print_madt_entry(header);
 
-        /* Register even disabled CPUs for cpu hotplug */
-
-        x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
+        /* Record local apic id only when enabled */
+        if (processor->flags.enabled)
+                x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
 
+        /*
+         * We need to register disabled CPU as well to permit
+         * counting disabled CPUs. This allows us to size
+         * cpus_possible_map more accurately, to permit
+         * to not preallocating memory for all NR_CPUS
+         * when we use CPU hotplug.
+         */
         mp_register_lapic(processor->id,        /* APIC ID */
                           processor->flags.enabled);    /* Enabled? */
 
@@ -464,7 +471,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
  * success: return IRQ number (>=0)
  * failure: return < 0
  */
-int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
+int acpi_register_gsi(u32 gsi, int triggering, int polarity)
 {
         unsigned int irq;
         unsigned int plat_gsi = gsi;
@@ -476,14 +483,14 @@ int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
         if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
                 extern void eisa_set_level_irq(unsigned int irq);
 
-                if (edge_level == ACPI_LEVEL_SENSITIVE)
+                if (triggering == ACPI_LEVEL_SENSITIVE)
                         eisa_set_level_irq(gsi);
         }
 #endif
 
 #ifdef CONFIG_X86_IO_APIC
         if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
-                plat_gsi = mp_register_gsi(gsi, edge_level, active_high_low);
+                plat_gsi = mp_register_gsi(gsi, triggering, polarity);
         }
 #endif
         acpi_gsi_to_irq(plat_gsi, &irq);
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
index 4c3036ba65df..25db49ef1770 100644
--- a/arch/i386/kernel/acpi/cstate.c
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -14,64 +14,6 @@
 #include <acpi/processor.h>
 #include <asm/acpi.h>
 
-static void acpi_processor_power_init_intel_pdc(struct acpi_processor_power
-                                                *pow)
-{
-        struct acpi_object_list *obj_list;
-        union acpi_object *obj;
-        u32 *buf;
-
-        /* allocate and initialize pdc. It will be used later. */
-        obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
-        if (!obj_list) {
-                printk(KERN_ERR "Memory allocation error\n");
-                return;
-        }
-
-        obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
-        if (!obj) {
-                printk(KERN_ERR "Memory allocation error\n");
-                kfree(obj_list);
-                return;
-        }
-
-        buf = kmalloc(12, GFP_KERNEL);
-        if (!buf) {
-                printk(KERN_ERR "Memory allocation error\n");
-                kfree(obj);
-                kfree(obj_list);
-                return;
-        }
-
-        buf[0] = ACPI_PDC_REVISION_ID;
-        buf[1] = 1;
-        buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
-
-        obj->type = ACPI_TYPE_BUFFER;
-        obj->buffer.length = 12;
-        obj->buffer.pointer = (u8 *) buf;
-        obj_list->count = 1;
-        obj_list->pointer = obj;
-        pow->pdc = obj_list;
-
-        return;
-}
-
-/* Initialize _PDC data based on the CPU vendor */
-void acpi_processor_power_init_pdc(struct acpi_processor_power *pow,
-                                   unsigned int cpu)
-{
-        struct cpuinfo_x86 *c = cpu_data + cpu;
-
-        pow->pdc = NULL;
-        if (c->x86_vendor == X86_VENDOR_INTEL)
-                acpi_processor_power_init_intel_pdc(pow);
-
-        return;
-}
-
-EXPORT_SYMBOL(acpi_processor_power_init_pdc);
-
 /*
  * Initialize bm_flags based on the CPU cache properties
  * On SMP it depends on cache configuration
diff --git a/arch/i386/kernel/acpi/processor.c b/arch/i386/kernel/acpi/processor.c
new file mode 100644
index 000000000000..9f4cc02717ec
--- /dev/null
+++ b/arch/i386/kernel/acpi/processor.c
@@ -0,0 +1,75 @@
+/*
+ * arch/i386/kernel/acpi/processor.c
+ *
+ * Copyright (C) 2005 Intel Corporation
+ *      Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ *      - Added _PDC for platforms with Intel CPUs
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+
+#include <acpi/processor.h>
+#include <asm/acpi.h>
+
+static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
+{
+        struct acpi_object_list *obj_list;
+        union acpi_object *obj;
+        u32 *buf;
+
+        /* allocate and initialize pdc. It will be used later. */
+        obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
+        if (!obj_list) {
+                printk(KERN_ERR "Memory allocation error\n");
+                return;
+        }
+
+        obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
+        if (!obj) {
+                printk(KERN_ERR "Memory allocation error\n");
+                kfree(obj_list);
+                return;
+        }
+
+        buf = kmalloc(12, GFP_KERNEL);
+        if (!buf) {
+                printk(KERN_ERR "Memory allocation error\n");
+                kfree(obj);
+                kfree(obj_list);
+                return;
+        }
+
+        buf[0] = ACPI_PDC_REVISION_ID;
+        buf[1] = 1;
+        buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
+
+        if (cpu_has(c, X86_FEATURE_EST))
+                buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
+
+        obj->type = ACPI_TYPE_BUFFER;
+        obj->buffer.length = 12;
+        obj->buffer.pointer = (u8 *) buf;
+        obj_list->count = 1;
+        obj_list->pointer = obj;
+        pr->pdc = obj_list;
+
+        return;
+}
+
+/* Initialize _PDC data based on the CPU vendor */
+void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
+{
+        unsigned int cpu = pr->id;
+        struct cpuinfo_x86 *c = cpu_data + cpu;
+
+        pr->pdc = NULL;
+        if (c->x86_vendor == X86_VENDOR_INTEL)
+                init_intel_pdc(pr, c);
+
+        return;
+}
+
+EXPORT_SYMBOL(arch_acpi_processor_init_pdc);
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index acd3f1e34ca6..98a5c23cf3df 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -75,8 +75,10 @@ void ack_bad_irq(unsigned int irq)
          * holds up an irq slot - in excessive cases (when multiple
          * unexpected vectors occur) that might lock up the APIC
          * completely.
+         * But only ack when the APIC is enabled -AK
          */
-        ack_APIC_irq();
+        if (!cpu_has_apic)
+                ack_APIC_irq();
 }
 
 void __init apic_intr_init(void)
@@ -1303,6 +1305,7 @@ int __init APIC_init_uniprocessor (void)
         if (!cpu_has_apic && APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
                 printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
                         boot_cpu_physical_apicid);
+                clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
                 return -1;
         }
 
diff --git a/arch/i386/kernel/cpu/amd.c b/arch/i386/kernel/cpu/amd.c
index 333578a4e91a..0810f81f2a05 100644
--- a/arch/i386/kernel/cpu/amd.c
+++ b/arch/i386/kernel/cpu/amd.c
@@ -282,3 +282,11 @@ int __init amd_init_cpu(void)
 }
 
 //early_arch_initcall(amd_init_cpu);
+
+static int __init amd_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_AMD] = NULL;
+        return 0;
+}
+
+late_initcall(amd_exit_cpu);
diff --git a/arch/i386/kernel/cpu/centaur.c b/arch/i386/kernel/cpu/centaur.c
index 394814e57672..f52669ecb93f 100644
--- a/arch/i386/kernel/cpu/centaur.c
+++ b/arch/i386/kernel/cpu/centaur.c
@@ -405,10 +405,6 @@ static void __init init_centaur(struct cpuinfo_x86 *c)
                                 winchip2_protect_mcr();
 #endif
                                 break;
-                        case 10:
-                                name="4";
-                                /* no info on the WC4 yet */
-                                break;
                         default:
                                 name="??";
                         }
@@ -474,3 +470,11 @@ int __init centaur_init_cpu(void)
 }
 
 //early_arch_initcall(centaur_init_cpu);
+
+static int __init centaur_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_CENTAUR] = NULL;
+        return 0;
+}
+
+late_initcall(centaur_exit_cpu);
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 15aee26ec2b6..7eb9213734a3 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -44,6 +44,7 @@ static void default_init(struct cpuinfo_x86 * c)
 
 static struct cpu_dev default_cpu = {
         .c_init = default_init,
+        .c_vendor = "Unknown",
 };
 static struct cpu_dev * this_cpu = &default_cpu;
 
@@ -150,6 +151,7 @@ static void __devinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
 {
         char *v = c->x86_vendor_id;
         int i;
+        static int printed;
 
         for (i = 0; i < X86_VENDOR_NUM; i++) {
                 if (cpu_devs[i]) {
@@ -159,10 +161,17 @@ static void __devinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
                                 c->x86_vendor = i;
                                 if (!early)
                                         this_cpu = cpu_devs[i];
-                                break;
+                                return;
                         }
                 }
         }
+        if (!printed) {
+                printed++;
+                printk(KERN_ERR "CPU: Vendor unknown, using generic init.\n");
+                printk(KERN_ERR "CPU: Your system may be unstable.\n");
+        }
+        c->x86_vendor = X86_VENDOR_UNKNOWN;
+        this_cpu = &default_cpu;
 }
 
 
diff --git a/arch/i386/kernel/cpu/cpufreq/Kconfig b/arch/i386/kernel/cpu/cpufreq/Kconfig
index 0f1eb507233b..26892d2099b0 100644
--- a/arch/i386/kernel/cpu/cpufreq/Kconfig
+++ b/arch/i386/kernel/cpu/cpufreq/Kconfig
@@ -96,6 +96,7 @@ config X86_POWERNOW_K8_ACPI
 
 config X86_GX_SUSPMOD
         tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
+        depends on PCI
         help
          This add the CPUFreq driver for NatSemi Geode processors which
          support suspend modulation.
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 7975e79d5fa4..3852d0a4c1b5 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -295,68 +295,6 @@ acpi_cpufreq_guess_freq (
 }
 
 
-/* 
- * acpi_processor_cpu_init_pdc_est - let BIOS know about the SMP capabilities
- * of this driver
- * @perf: processor-specific acpi_io_data struct
- * @cpu: CPU being initialized
- *
- * To avoid issues with legacy OSes, some BIOSes require to be informed of
- * the SMP capabilities of OS P-state driver. Here we set the bits in _PDC 
- * accordingly, for Enhanced Speedstep. Actual call to _PDC is done in
- * driver/acpi/processor.c
- */
-static void 
-acpi_processor_cpu_init_pdc_est(
-                struct acpi_processor_performance *perf, 
-                unsigned int cpu,
-                struct acpi_object_list *obj_list
-                )
-{
-        union acpi_object *obj;
-        u32 *buf;
-        struct cpuinfo_x86 *c = cpu_data + cpu;
-        dprintk("acpi_processor_cpu_init_pdc_est\n");
-
-        if (!cpu_has(c, X86_FEATURE_EST))
-                return;
-
-        /* Initialize pdc. It will be used later. */
-        if (!obj_list)
-                return;
-                
-        if (!(obj_list->count && obj_list->pointer))
-                return;
-
-        obj = obj_list->pointer;
-        if ((obj->buffer.length == 12) && obj->buffer.pointer) {
-                buf = (u32 *)obj->buffer.pointer;
-                buf[0] = ACPI_PDC_REVISION_ID;
-                buf[1] = 1;
-                buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
-                perf->pdc = obj_list;
-        }
-        return;
-}
- 
-
-/* CPU specific PDC initialization */
-static void 
-acpi_processor_cpu_init_pdc(
-                struct acpi_processor_performance *perf, 
-                unsigned int cpu,
-                struct acpi_object_list *obj_list
-                )
-{
-        struct cpuinfo_x86 *c = cpu_data + cpu;
-        dprintk("acpi_processor_cpu_init_pdc\n");
-        perf->pdc = NULL;
-        if (cpu_has(c, X86_FEATURE_EST))
-                acpi_processor_cpu_init_pdc_est(perf, cpu, obj_list);
-        return;
-}
-
-
 static int
 acpi_cpufreq_cpu_init (
         struct cpufreq_policy   *policy)
@@ -367,14 +305,7 @@ acpi_cpufreq_cpu_init (
         unsigned int            result = 0;
         struct cpuinfo_x86 *c = &cpu_data[policy->cpu];
 
-        union acpi_object               arg0 = {ACPI_TYPE_BUFFER};
-        u32                             arg0_buf[3];
-        struct acpi_object_list         arg_list = {1, &arg0};
-
         dprintk("acpi_cpufreq_cpu_init\n");
-        /* setup arg_list for _PDC settings */
-        arg0.buffer.length = 12;
-        arg0.buffer.pointer = (u8 *) arg0_buf;
 
         data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
         if (!data)
@@ -382,9 +313,7 @@ acpi_cpufreq_cpu_init (
 
         acpi_io_data[cpu] = data;
 
-        acpi_processor_cpu_init_pdc(&data->acpi_data, cpu, &arg_list);
         result = acpi_processor_register_performance(&data->acpi_data, cpu);
-        data->acpi_data.pdc = NULL;
 
         if (result)
                 goto err_free;
diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
index 270f2188d68b..cc73a7ae34bc 100644
--- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
@@ -52,6 +52,7 @@ enum {
 
 
 static int has_N44_O17_errata[NR_CPUS];
+static int has_N60_errata[NR_CPUS];
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -226,6 +227,12 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
         case 0x0f12:
                 has_N44_O17_errata[policy->cpu] = 1;
                 dprintk("has errata -- disabling low frequencies\n");
+                break;
+
+        case 0x0f29:
+                has_N60_errata[policy->cpu] = 1;
+                dprintk("has errata -- disabling frequencies lower than 2ghz\n");
+                break;
         }
         
         /* get max frequency */
@@ -237,6 +244,8 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
         for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
                 if ((i<2) && (has_N44_O17_errata[policy->cpu]))
                         p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
+                else if (has_N60_errata[policy->cpu] && p4clockmod_table[i].frequency < 2000000)
+                        p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
                 else
                         p4clockmod_table[i].frequency = (stock_freq * i)/8;
         }
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index 9a826cde4fd1..c173c0fa117a 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -362,22 +362,10 @@ static struct acpi_processor_performance p;
  */
 static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 {
-        union acpi_object               arg0 = {ACPI_TYPE_BUFFER};
-        u32                             arg0_buf[3];
-        struct acpi_object_list         arg_list = {1, &arg0};
         unsigned long                   cur_freq;
         int                             result = 0, i;
         unsigned int                    cpu = policy->cpu;
 
-        /* _PDC settings */
-        arg0.buffer.length = 12;
-        arg0.buffer.pointer = (u8 *) arg0_buf;
-        arg0_buf[0] = ACPI_PDC_REVISION_ID;
-        arg0_buf[1] = 1;
-        arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP_MSR;
-
-        p.pdc = &arg_list;
-
         /* register with ACPI core */
         if (acpi_processor_register_performance(&p, cpu)) {
                 dprintk(KERN_INFO PFX "obtaining ACPI data failed\n");
diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c
index 75015975d038..00f2e058797c 100644
--- a/arch/i386/kernel/cpu/cyrix.c
+++ b/arch/i386/kernel/cpu/cyrix.c
@@ -345,7 +345,7 @@ static void __init init_cyrix(struct cpuinfo_x86 *c)
 /*
  * Handle National Semiconductor branded processors
  */
-static void __devinit init_nsc(struct cpuinfo_x86 *c)
+static void __init init_nsc(struct cpuinfo_x86 *c)
 {
         /* There may be GX1 processors in the wild that are branded
          * NSC and not Cyrix.
@@ -444,6 +444,14 @@ int __init cyrix_init_cpu(void)
 
 //early_arch_initcall(cyrix_init_cpu);
 
+static int __init cyrix_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_CYRIX] = NULL;
+        return 0;
+}
+
+late_initcall(cyrix_exit_cpu);
+
 static struct cpu_dev nsc_cpu_dev __initdata = {
         .c_vendor       = "NSC",
         .c_ident        = { "Geode by NSC" },
@@ -458,3 +466,11 @@ int __init nsc_init_cpu(void)
 }
 
 //early_arch_initcall(nsc_init_cpu);
+
+static int __init nsc_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_NSC] = NULL;
+        return 0;
+}
+
+late_initcall(nsc_exit_cpu);
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index fbfd374aa336..ffe58cee0c48 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -43,13 +43,23 @@ static struct _cache_table cache_table[] __cpuinitdata =
         { 0x2c, LVL_1_DATA, 32 },       /* 8-way set assoc, 64 byte line size */
         { 0x30, LVL_1_INST, 32 },       /* 8-way set assoc, 64 byte line size */
         { 0x39, LVL_2,      128 },      /* 4-way set assoc, sectored cache, 64 byte line size */
+        { 0x3a, LVL_2,      192 },      /* 6-way set assoc, sectored cache, 64 byte line size */
         { 0x3b, LVL_2,      128 },      /* 2-way set assoc, sectored cache, 64 byte line size */
         { 0x3c, LVL_2,      256 },      /* 4-way set assoc, sectored cache, 64 byte line size */
+        { 0x3d, LVL_2,      384 },      /* 6-way set assoc, sectored cache, 64 byte line size */
+        { 0x3e, LVL_2,      512 },      /* 4-way set assoc, sectored cache, 64 byte line size */
         { 0x41, LVL_2,      128 },      /* 4-way set assoc, 32 byte line size */
         { 0x42, LVL_2,      256 },      /* 4-way set assoc, 32 byte line size */
         { 0x43, LVL_2,      512 },      /* 4-way set assoc, 32 byte line size */
         { 0x44, LVL_2,      1024 },     /* 4-way set assoc, 32 byte line size */
         { 0x45, LVL_2,      2048 },     /* 4-way set assoc, 32 byte line size */
+        { 0x46, LVL_3,      4096 },     /* 4-way set assoc, 64 byte line size */
+        { 0x47, LVL_3,      8192 },     /* 8-way set assoc, 64 byte line size */
+        { 0x49, LVL_3,      4096 },     /* 16-way set assoc, 64 byte line size */
+        { 0x4a, LVL_3,      6144 },     /* 12-way set assoc, 64 byte line size */
+        { 0x4b, LVL_3,      8192 },     /* 16-way set assoc, 64 byte line size */
+        { 0x4c, LVL_3,     12288 },     /* 12-way set assoc, 64 byte line size */
+        { 0x4d, LVL_3,     16384 },     /* 16-way set assoc, 64 byte line size */
         { 0x60, LVL_1_DATA, 16 },       /* 8-way set assoc, sectored cache, 64 byte line size */
         { 0x66, LVL_1_DATA, 8 },        /* 4-way set assoc, sectored cache, 64 byte line size */
         { 0x67, LVL_1_DATA, 16 },       /* 4-way set assoc, sectored cache, 64 byte line size */
@@ -57,6 +67,7 @@ static struct _cache_table cache_table[] __cpuinitdata =
         { 0x70, LVL_TRACE,  12 },       /* 8-way set assoc */
         { 0x71, LVL_TRACE,  16 },       /* 8-way set assoc */
         { 0x72, LVL_TRACE,  32 },       /* 8-way set assoc */
+        { 0x73, LVL_TRACE,  64 },       /* 8-way set assoc */
         { 0x78, LVL_2,    1024 },       /* 4-way set assoc, 64 byte line size */
         { 0x79, LVL_2,     128 },       /* 8-way set assoc, sectored cache, 64 byte line size */
         { 0x7a, LVL_2,     256 },       /* 8-way set assoc, sectored cache, 64 byte line size */
@@ -141,6 +152,7 @@ static int __cpuinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_le
         return 0;
 }
 
+/* will only be called once; __init is safe here */
 static int __init find_num_cache_leaves(void)
 {
         unsigned int            eax, ebx, ecx, edx;
diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c
index 1e9db198c440..3b4618bed70d 100644
--- a/arch/i386/kernel/cpu/mtrr/main.c
+++ b/arch/i386/kernel/cpu/mtrr/main.c
@@ -44,12 +44,10 @@
 #include <asm/msr.h>
 #include "mtrr.h"
 
-#define MTRR_VERSION            "2.0 (20020519)"
-
 u32 num_var_ranges = 0;
 
 unsigned int *usage_table;
-static DECLARE_MUTEX(main_lock);
+static DECLARE_MUTEX(mtrr_sem);
 
 u32 size_or_mask, size_and_mask;
 
@@ -335,7 +333,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
         /* No CPU hotplug when we change MTRR entries */
         lock_cpu_hotplug();
         /*  Search for existing MTRR  */
-        down(&main_lock);
+        down(&mtrr_sem);
         for (i = 0; i < num_var_ranges; ++i) {
                 mtrr_if->get(i, &lbase, &lsize, &ltype);
                 if (base >= lbase + lsize)
@@ -373,7 +371,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
                 printk(KERN_INFO "mtrr: no more MTRRs available\n");
         error = i;
  out:
-        up(&main_lock);
+        up(&mtrr_sem);
         unlock_cpu_hotplug();
         return error;
 }
@@ -466,7 +464,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
         max = num_var_ranges;
         /* No CPU hotplug when we change MTRR entries */
         lock_cpu_hotplug();
-        down(&main_lock);
+        down(&mtrr_sem);
         if (reg < 0) {
                 /*  Search for existing MTRR  */
                 for (i = 0; i < max; ++i) {
@@ -505,7 +503,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
                 set_mtrr(reg, 0, 0, 0);
         error = reg;
  out:
-        up(&main_lock);
+        up(&mtrr_sem);
         unlock_cpu_hotplug();
         return error;
 }
@@ -671,7 +669,6 @@ void __init mtrr_bp_init(void)
                         break;
                 }
         }
-        printk(KERN_INFO "mtrr: v%s\n",MTRR_VERSION);
 
         if (mtrr_if) {
                 set_num_var_ranges();
@@ -688,7 +685,7 @@ void mtrr_ap_init(void)
         if (!mtrr_if || !use_intel())
                 return;
         /*
-         * Ideally we should hold main_lock here to avoid mtrr entries changed,
+         * Ideally we should hold mtrr_sem here to avoid mtrr entries changed,
          * but this routine will be called in cpu boot time, holding the lock
          * breaks it. This routine is called in two cases: 1.very earily time
          * of software resume, when there absolutely isn't mtrr entry changes;
diff --git a/arch/i386/kernel/cpu/nexgen.c b/arch/i386/kernel/cpu/nexgen.c
index 30898a260a5c..ad87fa58058d 100644
--- a/arch/i386/kernel/cpu/nexgen.c
+++ b/arch/i386/kernel/cpu/nexgen.c
@@ -61,3 +61,11 @@ int __init nexgen_init_cpu(void)
 }
 
 //early_arch_initcall(nexgen_init_cpu);
+
+static int __init nexgen_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_NEXGEN] = NULL;
+        return 0;
+}
+
+late_initcall(nexgen_exit_cpu);
diff --git a/arch/i386/kernel/cpu/rise.c b/arch/i386/kernel/cpu/rise.c
index 8602425628ca..d08d5a2811c8 100644
--- a/arch/i386/kernel/cpu/rise.c
+++ b/arch/i386/kernel/cpu/rise.c
@@ -51,3 +51,11 @@ int __init rise_init_cpu(void)
 }
 
 //early_arch_initcall(rise_init_cpu);
+
+static int __init rise_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_RISE] = NULL;
+        return 0;
+}
+
+late_initcall(rise_exit_cpu);
diff --git a/arch/i386/kernel/cpu/transmeta.c b/arch/i386/kernel/cpu/transmeta.c
index fc426380366b..bdbeb77f4e22 100644
--- a/arch/i386/kernel/cpu/transmeta.c
+++ b/arch/i386/kernel/cpu/transmeta.c
@@ -84,7 +84,7 @@ static void __init init_transmeta(struct cpuinfo_x86 *c)
 #endif
 }
 
-static void transmeta_identify(struct cpuinfo_x86 * c)
+static void __init transmeta_identify(struct cpuinfo_x86 * c)
 {
         u32 xlvl;
         generic_identify(c);
@@ -111,3 +111,11 @@ int __init transmeta_init_cpu(void)
 }
 
 //early_arch_initcall(transmeta_init_cpu);
+
+static int __init transmeta_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_TRANSMETA] = NULL;
+        return 0;
+}
+
+late_initcall(transmeta_exit_cpu);
diff --git a/arch/i386/kernel/cpu/umc.c b/arch/i386/kernel/cpu/umc.c
index 264fcad559d5..2cd988f6dc55 100644
--- a/arch/i386/kernel/cpu/umc.c
+++ b/arch/i386/kernel/cpu/umc.c
@@ -31,3 +31,11 @@ int __init umc_init_cpu(void)
 }
 
 //early_arch_initcall(umc_init_cpu);
+
+static int __init umc_exit_cpu(void)
+{
+        cpu_devs[X86_VENDOR_UMC] = NULL;
+        return 0;
+}
+
+late_initcall(umc_exit_cpu);
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index 91a64016956e..0102f3d50e57 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -1080,7 +1080,7 @@ void __init mp_config_acpi_legacy_irqs (void)
 
 #define MAX_GSI_NUM     4096
 
-int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
+int mp_register_gsi (u32 gsi, int triggering, int polarity)
 {
         int                     ioapic = -1;
         int                     ioapic_pin = 0;
@@ -1129,7 +1129,7 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
 
         mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit);
 
-        if (edge_level) {
+        if (triggering == ACPI_LEVEL_SENSITIVE) {
                 /*
                  * For PCI devices assign IRQs in order, avoiding gaps
                  * due to unused I/O APIC pins.
@@ -1151,8 +1151,8 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
         }
 
         io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
-                    edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1,
-                    active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1);
+                    triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
+                    polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
         return gsi;
 }
 
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index d661703ac1cb..63f39a7e2c96 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -138,7 +138,7 @@ static int __init check_nmi_watchdog(void)
         if (nmi_watchdog == NMI_LOCAL_APIC)
                 smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0);
 
-        for (cpu = 0; cpu < NR_CPUS; cpu++)
+        for_each_cpu(cpu)
                 prev_nmi_count[cpu] = per_cpu(irq_stat, cpu).__nmi_count;
         local_irq_enable();
         mdelay((10*1000)/nmi_hz); // wait 10 ticks
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 2185377fdde1..0480454ebffa 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -297,8 +297,10 @@ void show_regs(struct pt_regs * regs)
 
         if (user_mode(regs))
                 printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
-        printk(" EFLAGS: %08lx    %s  (%s)\n",
-               regs->eflags, print_tainted(), system_utsname.release);
+        printk(" EFLAGS: %08lx    %s  (%s %.*s)\n",
+               regs->eflags, print_tainted(), system_utsname.release,
+               (int)strcspn(system_utsname.version, " "),
+               system_utsname.version);
         printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
                 regs->eax,regs->ebx,regs->ecx,regs->edx);
         printk("ESI: %08lx EDI: %08lx EBP: %08lx",
diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c
index 47675bbbb316..7c86e3c5f1c1 100644
--- a/arch/i386/kernel/timers/timer_tsc.c
+++ b/arch/i386/kernel/timers/timer_tsc.c
@@ -45,6 +45,15 @@ static unsigned long last_tsc_high; /* msb 32 bits of Time Stamp Counter */
 static unsigned long long monotonic_base;
 static seqlock_t monotonic_lock = SEQLOCK_UNLOCKED;
 
+/* Avoid compensating for lost ticks before TSCs are synched */
+static int detect_lost_ticks;
+static int __init start_lost_tick_compensation(void)
+{
+        detect_lost_ticks = 1;
+        return 0;
+}
+late_initcall(start_lost_tick_compensation);
+
 /* convert from cycles(64bits) => nanoseconds (64bits)
  *  basic equation:
  *              ns = cycles / (freq / ns_per_sec)
@@ -196,7 +205,8 @@ static void mark_offset_tsc_hpet(void)
 
         /* lost tick compensation */
         offset = hpet_readl(HPET_T0_CMP) - hpet_tick;
-        if (unlikely(((offset - hpet_last) > hpet_tick) && (hpet_last != 0))) {
+        if (unlikely(((offset - hpet_last) > hpet_tick) && (hpet_last != 0))
+                                        && detect_lost_ticks) {
                 int lost_ticks = (offset - hpet_last) / hpet_tick;
                 jiffies_64 += lost_ticks;
         }
@@ -421,7 +431,7 @@ static void mark_offset_tsc(void)
         delta += delay_at_last_interrupt;
         lost = delta/(1000000/HZ);
         delay = delta%(1000000/HZ);
-        if (lost >= 2) {
+        if (lost >= 2 && detect_lost_ticks) {
                 jiffies_64 += lost-1;
 
                 /* sanity check to ensure we're not always losing ticks */
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 0aaebf3e1cfa..b814dbdcc91e 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -166,7 +166,8 @@ static void show_trace_log_lvl(struct task_struct *task,
                 stack = (unsigned long*)context->previous_esp;
                 if (!stack)
                         break;
-                printk(KERN_EMERG " =======================\n");
+                printk(log_lvl);
+                printk(" =======================\n");
         }
 }
 
@@ -239,9 +240,11 @@ void show_registers(struct pt_regs *regs)
         }
         print_modules();
         printk(KERN_EMERG "CPU:    %d\nEIP:    %04x:[<%08lx>]    %s VLI\n"
-                        "EFLAGS: %08lx   (%s) \n",
+                        "EFLAGS: %08lx   (%s %.*s) \n",
                 smp_processor_id(), 0xffff & regs->xcs, regs->eip,
-                print_tainted(), regs->eflags, system_utsname.release);
+                print_tainted(), regs->eflags, system_utsname.release,
+                (int)strcspn(system_utsname.version, " "),
+                system_utsname.version);
         print_symbol(KERN_EMERG "EIP is at %s\n", regs->eip);
         printk(KERN_EMERG "eax: %08lx   ebx: %08lx   ecx: %08lx   edx: %08lx\n",
                 regs->eax, regs->ebx, regs->ecx, regs->edx);