Merge commit 'v2.6.38' into x86/mm

Conflicts:
	arch/x86/mm/numa_64.c

Merge reason: Resolve the conflict, update the branch to .38.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

15 files changed, 84 insertions, 41 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index a2c5121..9a966c5 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -72,6 +72,7 @@ u8 acpi_sci_flags __initdata;
 int acpi_sci_override_gsi __initdata;
 int acpi_skip_timer_override __initdata;
 int acpi_use_timer_override __initdata;
+int acpi_fix_pin2_polarity __initdata;
 
 #ifdef CONFIG_X86_LOCAL_APIC
 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
@@ -415,10 +416,15 @@ acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
 		return 0;
 	}
 
-	if (acpi_skip_timer_override &&
-	    intsrc->source_irq == 0 && intsrc->global_irq == 2) {
-		printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
-		return 0;
+	if (intsrc->source_irq == 0 && intsrc->global_irq == 2) {
+		if (acpi_skip_timer_override) {
+			printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
+			return 0;
+		}
+		if (acpi_fix_pin2_polarity && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
+			intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
+			printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
+		}
 	}
 
 	mp_override_legacy_irq(intsrc->source_irq,
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 1236085..7038b95 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -671,7 +671,7 @@ void __kprobes text_poke_smp_batch(struct text_poke_param *params, int n)
 
 	atomic_set(&stop_machine_first, 1);
 	wrote_text = 0;
-	stop_machine(stop_machine_text_poke, (void *)&tpp, NULL);
+	__stop_machine(stop_machine_text_poke, (void *)&tpp, NULL);
 }
 
 #if defined(CONFIG_DYNAMIC_FTRACE) || defined(HAVE_JUMP_LABEL)
diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c
index 51ef31a..51d4e16 100644
--- a/arch/x86/kernel/apb_timer.c
+++ b/arch/x86/kernel/apb_timer.c
@@ -284,7 +284,7 @@ static int __init apbt_clockevent_register(void)
 	memcpy(&adev->evt, &apbt_clockevent, sizeof(struct clock_event_device));
 
 	if (mrst_timer_options == MRST_TIMER_LAPIC_APBT) {
-		apbt_clockevent.rating = APBT_CLOCKEVENT_RATING - 100;
+		adev->evt.rating = APBT_CLOCKEVENT_RATING - 100;
 		global_clock_event = &adev->evt;
 		printk(KERN_DEBUG "%s clockevent registered as global\n",
 		       global_clock_event->name);
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 1390cf9..306386f 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1403,12 +1403,17 @@ void __cpuinit end_local_APIC_setup(void)
 #endif
 
 	apic_pm_activate();
+}
+
+void __init bsp_end_local_APIC_setup(void)
+{
+	end_local_APIC_setup();
 
 	/*
 	 * Now that local APIC setup is completed for BP, configure the fault
 	 * handling for interrupt remapping.
 	 */
-	if (!smp_processor_id() && intr_remapping_enabled)
+	if (intr_remapping_enabled)
 		enable_drhd_fault_handling();
 
 }
@@ -1778,7 +1783,7 @@ int __init APIC_init_uniprocessor(void)
 		enable_IO_APIC();
 #endif
 
-	end_local_APIC_setup();
+	bsp_end_local_APIC_setup();
 
 #ifdef CONFIG_X86_IO_APIC
 	if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 697dc34..ca9e2a35 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -4002,6 +4002,9 @@ int mp_find_ioapic(u32 gsi)
 {
 	int i = 0;
 
+	if (nr_ioapics == 0)
+		return -1;
+
 	/* Find the IOAPIC that manages this GSI. */
 	for (i = 0; i < nr_ioapics; i++) {
 		if ((gsi >= mp_gsi_routing[i].gsi_base)
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c
index 13a3891..452932d 100644
--- a/arch/x86/kernel/check.c
+++ b/arch/x86/kernel/check.c
@@ -106,8 +106,8 @@ void __init setup_bios_corruption_check(void)
 		addr += size;
 	}
 
-	printk(KERN_INFO "Scanning %d areas for low memory corruption\n",
-	       num_scan_areas);
+	if (num_scan_areas)
+		printk(KERN_INFO "Scanning %d areas for low memory corruption\n", num_scan_areas);
 }
 
 
@@ -143,12 +143,12 @@ static void check_corruption(struct work_struct *dummy)
 {
 	check_for_bios_corruption();
 	schedule_delayed_work(&bios_check_work,
-		round_jiffies_relative(corruption_check_period*HZ)); 
+		round_jiffies_relative(corruption_check_period*HZ));
 }
 
 static int start_periodic_check_for_corruption(void)
 {
-	if (!memory_corruption_check || corruption_check_period == 0)
+	if (!num_scan_areas || !memory_corruption_check || corruption_check_period == 0)
 		return 0;
 
 	printk(KERN_INFO "Scanning for low memory corruption every %d seconds\n",
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
index bd1cac7..52c9364 100644
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -158,9 +158,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
 {
 	if (c->x86 == 0x06) {
 		if (cpu_has(c, X86_FEATURE_EST))
-			printk(KERN_WARNING PFX "Warning: EST-capable CPU "
-			       "detected. The acpi-cpufreq module offers "
-			       "voltage scaling in addition of frequency "
+			printk_once(KERN_WARNING PFX "Warning: EST-capable "
+			       "CPU detected. The acpi-cpufreq module offers "
+			       "voltage scaling in addition to frequency "
 			       "scaling. You should use that instead of "
 			       "p4-clockmod, if possible.\n");
 		switch (c->x86_model) {
diff --git a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
index 4f6f679..4a5a42b 100644
--- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
@@ -195,7 +195,7 @@ static unsigned int pcc_get_freq(unsigned int cpu)
 cmd_incomplete:
 	iowrite16(0, &pcch_hdr->status);
 	spin_unlock(&pcc_lock);
-	return -EINVAL;
+	return 0;
 }
 
 static int pcc_cpufreq_target(struct cpufreq_policy *policy,
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 35c7e65..c567dec 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1537,6 +1537,7 @@ static struct notifier_block cpb_nb = {
 static int __cpuinit powernowk8_init(void)
 {
 	unsigned int i, supported_cpus = 0, cpu;
+	int rv;
 
 	for_each_online_cpu(i) {
 		int rc;
@@ -1555,14 +1556,14 @@ static int __cpuinit powernowk8_init(void)
 
 		cpb_capable = true;
 
-		register_cpu_notifier(&cpb_nb);
-
 		msrs = msrs_alloc();
 		if (!msrs) {
 			printk(KERN_ERR "%s: Error allocating msrs!\n", __func__);
 			return -ENOMEM;
 		}
 
+		register_cpu_notifier(&cpb_nb);
+
 		rdmsr_on_cpus(cpu_online_mask, MSR_K7_HWCR, msrs);
 
 		for_each_cpu(cpu, cpu_online_mask) {
@@ -1574,7 +1575,13 @@ static int __cpuinit powernowk8_init(void)
 			(cpb_enabled ? "on" : "off"));
 	}
 
-	return cpufreq_register_driver(&cpufreq_amd64_driver);
+	rv = cpufreq_register_driver(&cpufreq_amd64_driver);
+	if (rv < 0 && boot_cpu_has(X86_FEATURE_CPB)) {
+		unregister_cpu_notifier(&cpb_nb);
+		msrs_free(msrs);
+		msrs = NULL;
+	}
+	return rv;
 }
 
 /* driver entry point for term */
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index f7a0993..ff751a9 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -770,9 +770,14 @@ static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
 		return 1;
 	}
 
-	/* it might be unflagged overflow */
-	rdmsrl(hwc->event_base + hwc->idx, v);
-	if (!(v & ARCH_P4_CNTRVAL_MASK))
+	/*
+	 * In some circumstances the overflow might issue an NMI but did
+	 * not set P4_CCCR_OVF bit. Because a counter holds a negative value
+	 * we simply check for high bit being set, if it's cleared it means
+	 * the counter has reached zero value and continued counting before
+	 * real NMI signal was received:
+	 */
+	if (!(v & ARCH_P4_UNFLAGGED_BIT))
 		return 1;
 
 	return 0;
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 76b8cd9..9efbdcc 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -143,15 +143,10 @@ static void __init ati_bugs(int num, int slot, int func)
 
 static u32 __init ati_sbx00_rev(int num, int slot, int func)
 {
-	u32 old, d;
+	u32 d;
 
-	d = read_pci_config(num, slot, func, 0x70);
-	old = d;
-	d &= ~(1<<8);
-	write_pci_config(num, slot, func, 0x70, d);
 	d = read_pci_config(num, slot, func, 0x8);
 	d &= 0xff;
-	write_pci_config(num, slot, func, 0x70, old);
 
 	return d;
 }
@@ -160,13 +155,16 @@ static void __init ati_bugs_contd(int num, int slot, int func)
 {
 	u32 d, rev;
 
-	if (acpi_use_timer_override)
-		return;
-
 	rev = ati_sbx00_rev(num, slot, func);
+	if (rev >= 0x40)
+		acpi_fix_pin2_polarity = 1;
+
 	if (rev > 0x13)
 		return;
 
+	if (acpi_use_timer_override)
+		return;
+
 	/* check for IRQ0 interrupt swap */
 	d = read_pci_config(num, slot, func, 0x64);
 	if (!(d & (1<<14)))
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 52945da..387b6a0 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -367,7 +367,8 @@ void fixup_irqs(void)
 		if (irr  & (1 << (vector % 32))) {
 			irq = __this_cpu_read(vector_irq[vector]);
 
-			data = irq_get_irq_data(irq);
+			desc = irq_to_desc(irq);
+			data = &desc->irq_data;
 			raw_spin_lock(&desc->lock);
 			if (data->chip->irq_retrigger)
 				data->chip->irq_retrigger(data);
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index e764fc0..ff45541 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -92,21 +92,31 @@ void show_regs(struct pt_regs *regs)
 
 void show_regs_common(void)
 {
-	const char *board, *product;
+	const char *vendor, *product, *board;
 
-	board = dmi_get_system_info(DMI_BOARD_NAME);
-	if (!board)
-		board = "";
+	vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+	if (!vendor)
+		vendor = "";
 	product = dmi_get_system_info(DMI_PRODUCT_NAME);
 	if (!product)
 		product = "";
 
+	/* Board Name is optional */
+	board = dmi_get_system_info(DMI_BOARD_NAME);
+
 	printk(KERN_CONT "\n");
-	printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s %s/%s\n",
+	printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s",
 		current->pid, current->comm, print_tainted(),
 		init_utsname()->release,
 		(int)strcspn(init_utsname()->version, " "),
-		init_utsname()->version, board, product);
+		init_utsname()->version);
+	printk(KERN_CONT " ");
+	printk(KERN_CONT "%s %s", vendor, product);
+	if (board) {
+		printk(KERN_CONT "/");
+		printk(KERN_CONT "%s", board);
+	}
+	printk(KERN_CONT "\n");
 }
 
 void flush_thread(void)
@@ -506,7 +516,7 @@ static void poll_idle(void)
 #define MWAIT_ECX_EXTENDED_INFO		0x01
 #define MWAIT_EDX_C1			0xf0
 
-int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
+int mwait_usable(const struct cpuinfo_x86 *c)
 {
 	u32 eax, ebx, ecx, edx;
 
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index fc7aae1..715037c 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -285,6 +285,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),
 		},
 	},
+	{	/* Handle problems with rebooting on VersaLogic Menlow boards */
+		.callback = set_bios_reboot,
+		.ident = "VersaLogic Menlow based board",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "VersaLogic Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "VersaLogic Menlow board"),
+		},
+	},
 	{ }
 };
 
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index fe48371..a9d805f 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -999,7 +999,7 @@ static int __init smp_sanity_check(unsigned max_cpus)
 
 		connect_bsp_APIC();
 		setup_local_APIC();
-		end_local_APIC_setup();
+		bsp_end_local_APIC_setup();
 		return -1;
 	}
 
@@ -1074,7 +1074,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 	if (!skip_ioapic_setup && nr_ioapics)
 		enable_IO_APIC();
 
-	end_local_APIC_setup();
+	bsp_end_local_APIC_setup();
 
 	if (apic->setup_portio_remap)
 		apic->setup_portio_remap();