Auto-update from upstream

23 files changed, 649 insertions, 293 deletions

diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 40e5aba3ad3d..97ca17189af5 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -202,6 +202,8 @@ int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
 		if (mcfg->config[i].base_reserved) {
 			printk(KERN_ERR PREFIX
 			       "MMCONFIG not in low 4GB of memory\n");
+			kfree(pci_mmcfg_config);
+			pci_mmcfg_config_num = 0;
 			return -ENODEV;
 		}
 	}
@@ -215,7 +217,7 @@ static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
 {
 	struct acpi_table_madt *madt = NULL;
 
-	if (!phys_addr || !size)
+	if (!phys_addr || !size || !cpu_has_apic)
 		return -EINVAL;
 
 	madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
@@ -621,9 +623,9 @@ extern u32 pmtmr_ioport;
 
 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
 {
-	struct fadt_descriptor_rev2 *fadt = NULL;
+	struct fadt_descriptor *fadt = NULL;
 
-	fadt = (struct fadt_descriptor_rev2 *)__acpi_map_table(phys, size);
+	fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size);
 	if (!fadt) {
 		printk(KERN_WARNING PREFIX "Unable to map FADT\n");
 		return 0;
@@ -754,7 +756,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
 		return -ENODEV;
 	}
 
-	if (!cpu_has_apic)
+	if (!cpu_has_apic) 
 		return -ENODEV;
 
 	/*
diff --git a/arch/i386/kernel/acpi/processor.c b/arch/i386/kernel/acpi/processor.c
index 9f4cc02717ec..b54fded49834 100644
--- a/arch/i386/kernel/acpi/processor.c
+++ b/arch/i386/kernel/acpi/processor.c
@@ -47,7 +47,7 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
 	buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
 
 	if (cpu_has(c, X86_FEATURE_EST))
-		buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
+		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 
 	obj->type = ACPI_TYPE_BUFFER;
 	obj->buffer.length = 12;
diff --git a/arch/i386/kernel/acpi/sleep.c b/arch/i386/kernel/acpi/sleep.c
index 1cb2b186a3af..4ee83577bf61 100644
--- a/arch/i386/kernel/acpi/sleep.c
+++ b/arch/i386/kernel/acpi/sleep.c
@@ -8,30 +8,17 @@
 #include <linux/acpi.h>
 #include <linux/bootmem.h>
 #include <linux/dmi.h>
+#include <linux/cpumask.h>
+
 #include <asm/smp.h>
-#include <asm/tlbflush.h>
 
 /* address in low memory of the wakeup routine. */
 unsigned long acpi_wakeup_address = 0;
 unsigned long acpi_video_flags;
 extern char wakeup_start, wakeup_end;
 
-extern void zap_low_mappings(void);
-
 extern unsigned long FASTCALL(acpi_copy_wakeup_routine(unsigned long));
 
-static void init_low_mapping(pgd_t * pgd, int pgd_limit)
-{
-	int pgd_ofs = 0;
-
-	while ((pgd_ofs < pgd_limit)
-	       && (pgd_ofs + USER_PTRS_PER_PGD < PTRS_PER_PGD)) {
-		set_pgd(pgd, *(pgd + USER_PTRS_PER_PGD));
-		pgd_ofs++, pgd++;
-	}
-	flush_tlb_all();
-}
-
 /**
  * acpi_save_state_mem - save kernel state
  *
@@ -42,7 +29,6 @@ int acpi_save_state_mem(void)
 {
 	if (!acpi_wakeup_address)
 		return 1;
-	init_low_mapping(swapper_pg_dir, USER_PTRS_PER_PGD);
 	memcpy((void *)acpi_wakeup_address, &wakeup_start,
 	       &wakeup_end - &wakeup_start);
 	acpi_copy_wakeup_routine(acpi_wakeup_address);
@@ -55,7 +41,6 @@ int acpi_save_state_mem(void)
  */
 void acpi_restore_state_mem(void)
 {
-	zap_low_mappings();
 }
 
 /**
diff --git a/arch/i386/kernel/acpi/wakeup.S b/arch/i386/kernel/acpi/wakeup.S
index 7c74fe0dc93c..9f408eee4e6f 100644
--- a/arch/i386/kernel/acpi/wakeup.S
+++ b/arch/i386/kernel/acpi/wakeup.S
@@ -56,7 +56,7 @@ wakeup_code:
 1:
 
 	# set up page table
-	movl	$swapper_pg_dir-__PAGE_OFFSET, %eax
+	movl	$swsusp_pg_dir-__PAGE_OFFSET, %eax
 	movl	%eax, %cr3
 
 	testl	$1, real_efer_save_restore - wakeup_code
@@ -265,11 +265,6 @@ ENTRY(acpi_copy_wakeup_routine)
 	movl	$0x12345678, saved_magic
 	ret
 
-.data
-ALIGN
-ENTRY(saved_magic)	.long	0
-ENTRY(saved_eip)	.long	0
-
 save_registers:
 	leal	4(%esp), %eax
 	movl	%eax, saved_context_esp
@@ -304,7 +299,11 @@ ret_point:
 	call	restore_processor_state
 	ret
 
+.data
 ALIGN
+ENTRY(saved_magic)	.long	0
+ENTRY(saved_eip)	.long	0
+
 # saved registers
 saved_gdt:	.long	0,0
 saved_idt:	.long	0,0
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 3d4b2f3d116a..5ab59c12335b 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -62,7 +62,7 @@ int apic_verbosity;
 
 static void apic_pm_activate(void);
 
-int modern_apic(void)
+static int modern_apic(void)
 {
 	unsigned int lvr, version;
 	/* AMD systems use old APIC versions, so check the CPU */
@@ -113,7 +113,7 @@ void __init apic_intr_init(void)
 }
 
 /* Using APIC to generate smp_local_timer_interrupt? */
-int using_apic_timer = 0;
+int using_apic_timer __read_mostly = 0;
 
 static int enabled_via_apicbase;
 
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c
index df0e1745f189..9e819eb68229 100644
--- a/arch/i386/kernel/apm.c
+++ b/arch/i386/kernel/apm.c
@@ -374,14 +374,14 @@ static struct {
 	unsigned short	segment;
 }				apm_bios_entry;
 static int			clock_slowed;
-static int			idle_threshold = DEFAULT_IDLE_THRESHOLD;
-static int			idle_period = DEFAULT_IDLE_PERIOD;
+static int			idle_threshold __read_mostly = DEFAULT_IDLE_THRESHOLD;
+static int			idle_period __read_mostly = DEFAULT_IDLE_PERIOD;
 static int			set_pm_idle;
 static int			suspends_pending;
 static int			standbys_pending;
 static int			ignore_sys_suspend;
 static int			ignore_normal_resume;
-static int			bounce_interval = DEFAULT_BOUNCE_INTERVAL;
+static int			bounce_interval __read_mostly = DEFAULT_BOUNCE_INTERVAL;
 
 #ifdef CONFIG_APM_RTC_IS_GMT
 #	define	clock_cmos_diff	0
@@ -390,8 +390,8 @@ static int			bounce_interval = DEFAULT_BOUNCE_INTERVAL;
 static long			clock_cmos_diff;
 static int			got_clock_diff;
 #endif
-static int			debug;
-static int			smp;
+static int			debug __read_mostly;
+static int			smp __read_mostly;
 static int			apm_disabled = -1;
 #ifdef CONFIG_SMP
 static int			power_off;
@@ -403,8 +403,8 @@ static int			realmode_power_off = 1;
 #else
 static int			realmode_power_off;
 #endif
-static int			exit_kapmd;
-static int			kapmd_running;
+static int			exit_kapmd __read_mostly;
+static int			kapmd_running __read_mostly;
 #ifdef CONFIG_APM_ALLOW_INTS
 static int			allow_ints = 1;
 #else
@@ -416,15 +416,15 @@ static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
 static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
 static struct apm_user *	user_list;
 static DEFINE_SPINLOCK(user_list_lock);
-static struct desc_struct	bad_bios_desc = { 0, 0x00409200 };
+static const struct desc_struct	bad_bios_desc = { 0, 0x00409200 };
 
-static char			driver_version[] = "1.16ac";	/* no spaces */
+static const char		driver_version[] = "1.16ac";	/* no spaces */
 
 /*
  *	APM event names taken from the APM 1.2 specification. These are
  *	the message codes that the BIOS uses to tell us about events
  */
-static char *	apm_event_name[] = {
+static const char *	const apm_event_name[] = {
 	"system standby",
 	"system suspend",
 	"normal resume",
@@ -616,7 +616,7 @@ static u8 apm_bios_call(u32 func, u32 ebx_in, u32 ecx_in,
  *	@ecx_in: ECX register value for BIOS call
  *	@eax: EAX register on return from the BIOS call
  *
- *	Make a BIOS call that does only returns one value, or just status.
+ *	Make a BIOS call that returns one value only, or just status.
  *	If there is an error, then the error code is returned in AH
  *	(bits 8-15 of eax) and this function returns non-zero. This is
  *	used for simpler BIOS operations. This call may hold interrupts
@@ -822,7 +822,7 @@ static void apm_do_busy(void)
 #define IDLE_CALC_LIMIT   (HZ * 100)
 #define IDLE_LEAKY_MAX    16
 
-static void (*original_pm_idle)(void);
+static void (*original_pm_idle)(void) __read_mostly;
 
 /**
  * apm_cpu_idle		-	cpu idling for APM capable Linux
@@ -1063,7 +1063,8 @@ static int apm_engage_power_management(u_short device, int enable)
  
 static int apm_console_blank(int blank)
 {
-	int error, i;
+	int error = APM_NOT_ENGAGED; /* silence gcc */
+	int i;
 	u_short state;
 	static const u_short dev[3] = { 0x100, 0x1FF, 0x101 };
 
@@ -1104,7 +1105,8 @@ static int queue_empty(struct apm_user *as)
 
 static apm_event_t get_queued_event(struct apm_user *as)
 {
-	as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS;
+	if (++as->event_tail >= APM_MAX_EVENTS)
+		as->event_tail = 0;
 	return as->events[as->event_tail];
 }
 
@@ -1118,13 +1120,16 @@ static void queue_event(apm_event_t event, struct apm_user *sender)
 	for (as = user_list; as != NULL; as = as->next) {
 		if ((as == sender) || (!as->reader))
 			continue;
-		as->event_head = (as->event_head + 1) % APM_MAX_EVENTS;
+		if (++as->event_head >= APM_MAX_EVENTS)
+			as->event_head = 0;
+
 		if (as->event_head == as->event_tail) {
 			static int notified;
 
 			if (notified++ == 0)
 			    printk(KERN_ERR "apm: an event queue overflowed\n");
-			as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS;
+			if (++as->event_tail >= APM_MAX_EVENTS)
+				as->event_tail = 0;
 		}
 		as->events[as->event_head] = event;
 		if ((!as->suser) || (!as->writer))
@@ -1282,7 +1287,7 @@ static void standby(void)
 static apm_event_t get_event(void)
 {
 	int		error;
-	apm_event_t	event;
+	apm_event_t	event = APM_NO_EVENTS; /* silence gcc */
 	apm_eventinfo_t	info;
 
 	static int notified;
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index a06a49075f10..44f2c5f2dda1 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -11,6 +11,8 @@
 #include <asm/msr.h>
 #include <asm/io.h>
 #include <asm/mmu_context.h>
+#include <asm/mtrr.h>
+#include <asm/mce.h>
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/mpspec.h>
 #include <asm/apic.h>
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 1a7bdcef1926..05668e3598c0 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -48,12 +48,13 @@ MODULE_LICENSE("GPL");
 
 
 struct cpufreq_acpi_io {
-	struct acpi_processor_performance	acpi_data;
+	struct acpi_processor_performance	*acpi_data;
 	struct cpufreq_frequency_table		*freq_table;
 	unsigned int				resume;
 };
 
 static struct cpufreq_acpi_io	*acpi_io_data[NR_CPUS];
+static struct acpi_processor_performance	*acpi_perf_data[NR_CPUS];
 
 static struct cpufreq_driver acpi_cpufreq_driver;
 
@@ -104,64 +105,43 @@ acpi_processor_set_performance (
 {
 	u16			port = 0;
 	u8			bit_width = 0;
-	int			ret;
-	u32			value = 0;
 	int			i = 0;
-	struct cpufreq_freqs    cpufreq_freqs;
-	cpumask_t		saved_mask;
+	int			ret = 0;
+	u32			value = 0;
 	int			retval;
+	struct acpi_processor_performance	*perf;
 
 	dprintk("acpi_processor_set_performance\n");
 
-	/*
-	 * TBD: Use something other than set_cpus_allowed.
-	 * As set_cpus_allowed is a bit racy, 
-	 * with any other set_cpus_allowed for this process.
-	 */
-	saved_mask = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
-	if (smp_processor_id() != cpu) {
-		return (-EAGAIN);
-	}
-	
-	if (state == data->acpi_data.state) {
+	retval = 0;
+	perf = data->acpi_data;	
+	if (state == perf->state) {
 		if (unlikely(data->resume)) {
 			dprintk("Called after resume, resetting to P%d\n", state);
 			data->resume = 0;
 		} else {
 			dprintk("Already at target state (P%d)\n", state);
-			retval = 0;
-			goto migrate_end;
+			return (retval);
 		}
 	}
 
-	dprintk("Transitioning from P%d to P%d\n",
-		data->acpi_data.state, state);
-
-	/* cpufreq frequency struct */
-	cpufreq_freqs.cpu = cpu;
-	cpufreq_freqs.old = data->freq_table[data->acpi_data.state].frequency;
-	cpufreq_freqs.new = data->freq_table[state].frequency;
-
-	/* notify cpufreq */
-	cpufreq_notify_transition(&cpufreq_freqs, CPUFREQ_PRECHANGE);
+	dprintk("Transitioning from P%d to P%d\n", perf->state, state);
 
 	/*
 	 * First we write the target state's 'control' value to the
 	 * control_register.
 	 */
 
-	port = data->acpi_data.control_register.address;
-	bit_width = data->acpi_data.control_register.bit_width;
-	value = (u32) data->acpi_data.states[state].control;
+	port = perf->control_register.address;
+	bit_width = perf->control_register.bit_width;
+	value = (u32) perf->states[state].control;
 
 	dprintk("Writing 0x%08x to port 0x%04x\n", value, port);
 
 	ret = acpi_processor_write_port(port, bit_width, value);
 	if (ret) {
 		dprintk("Invalid port width 0x%04x\n", bit_width);
-		retval = ret;
-		goto migrate_end;
+		return (ret);
 	}
 
 	/*
@@ -177,48 +157,35 @@ acpi_processor_set_performance (
 		 * before giving up.
 		 */
 
-		port = data->acpi_data.status_register.address;
-		bit_width = data->acpi_data.status_register.bit_width;
+		port = perf->status_register.address;
+		bit_width = perf->status_register.bit_width;
 
 		dprintk("Looking for 0x%08x from port 0x%04x\n",
-			(u32) data->acpi_data.states[state].status, port);
+			(u32) perf->states[state].status, port);
 
-		for (i=0; i<100; i++) {
+		for (i = 0; i < 100; i++) {
 			ret = acpi_processor_read_port(port, bit_width, &value);
 			if (ret) {	
 				dprintk("Invalid port width 0x%04x\n", bit_width);
-				retval = ret;
-				goto migrate_end;
+				return (ret);
 			}
-			if (value == (u32) data->acpi_data.states[state].status)
+			if (value == (u32) perf->states[state].status)
 				break;
 			udelay(10);
 		}
 	} else {
-		value = (u32) data->acpi_data.states[state].status;
+		value = (u32) perf->states[state].status;
 	}
 
-	/* notify cpufreq */
-	cpufreq_notify_transition(&cpufreq_freqs, CPUFREQ_POSTCHANGE);
-
-	if (unlikely(value != (u32) data->acpi_data.states[state].status)) {
-		unsigned int tmp = cpufreq_freqs.new;
-		cpufreq_freqs.new = cpufreq_freqs.old;
-		cpufreq_freqs.old = tmp;
-		cpufreq_notify_transition(&cpufreq_freqs, CPUFREQ_PRECHANGE);
-		cpufreq_notify_transition(&cpufreq_freqs, CPUFREQ_POSTCHANGE);
+	if (unlikely(value != (u32) perf->states[state].status)) {
 		printk(KERN_WARNING "acpi-cpufreq: Transition failed\n");
 		retval = -ENODEV;
-		goto migrate_end;
+		return (retval);
 	}
 
 	dprintk("Transition successful after %d microseconds\n", i * 10);
 
-	data->acpi_data.state = state;
-
-	retval = 0;
-migrate_end:
-	set_cpus_allowed(current, saved_mask);
+	perf->state = state;
 	return (retval);
 }
 
@@ -230,8 +197,17 @@ acpi_cpufreq_target (
 	unsigned int relation)
 {
 	struct cpufreq_acpi_io *data = acpi_io_data[policy->cpu];
+	struct acpi_processor_performance *perf;
+	struct cpufreq_freqs freqs;
+	cpumask_t online_policy_cpus;
+	cpumask_t saved_mask;
+	cpumask_t set_mask;
+	cpumask_t covered_cpus;
+	unsigned int cur_state = 0;
 	unsigned int next_state = 0;
 	unsigned int result = 0;
+	unsigned int j;
+	unsigned int tmp;
 
 	dprintk("acpi_cpufreq_setpolicy\n");
 
@@ -240,11 +216,95 @@ acpi_cpufreq_target (
 			target_freq,
 			relation,
 			&next_state);
-	if (result)
+	if (unlikely(result))
 		return (result);
 
-	result = acpi_processor_set_performance (data, policy->cpu, next_state);
+	perf = data->acpi_data;
+	cur_state = perf->state;
+	freqs.old = data->freq_table[cur_state].frequency;
+	freqs.new = data->freq_table[next_state].frequency;
+
+#ifdef CONFIG_HOTPLUG_CPU
+	/* cpufreq holds the hotplug lock, so we are safe from here on */
+	cpus_and(online_policy_cpus, cpu_online_map, policy->cpus);
+#else
+	online_policy_cpus = policy->cpus;
+#endif
+
+	for_each_cpu_mask(j, online_policy_cpus) {
+		freqs.cpu = j;
+		cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	}
+
+	/*
+	 * We need to call driver->target() on all or any CPU in
+	 * policy->cpus, depending on policy->shared_type.
+	 */
+	saved_mask = current->cpus_allowed;
+	cpus_clear(covered_cpus);
+	for_each_cpu_mask(j, online_policy_cpus) {
+		/*
+		 * Support for SMP systems.
+		 * Make sure we are running on CPU that wants to change freq
+		 */
+		cpus_clear(set_mask);
+		if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
+			cpus_or(set_mask, set_mask, online_policy_cpus);
+		else
+			cpu_set(j, set_mask);
+
+		set_cpus_allowed(current, set_mask);
+		if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) {
+			dprintk("couldn't limit to CPUs in this domain\n");
+			result = -EAGAIN;
+			break;
+		}
+
+		result = acpi_processor_set_performance (data, j, next_state);
+		if (result) {
+			result = -EAGAIN;
+			break;
+		}
+
+		if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
+			break;
+ 
+		cpu_set(j, covered_cpus);
+	}
+
+	for_each_cpu_mask(j, online_policy_cpus) {
+		freqs.cpu = j;
+		cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+	}
 
+	if (unlikely(result)) {
+		/*
+		 * We have failed halfway through the frequency change.
+		 * We have sent callbacks to online_policy_cpus and
+		 * acpi_processor_set_performance() has been called on 
+		 * coverd_cpus. Best effort undo..
+		 */
+
+		if (!cpus_empty(covered_cpus)) {
+			for_each_cpu_mask(j, covered_cpus) {
+				policy->cpu = j;
+				acpi_processor_set_performance (data, 
+						j, 
+						cur_state);
+			}
+		}
+
+		tmp = freqs.new;
+		freqs.new = freqs.old;
+		freqs.old = tmp;
+		for_each_cpu_mask(j, online_policy_cpus) {
+			freqs.cpu = j;
+			cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+			cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+		}
+	}
+
+	set_cpus_allowed(current, saved_mask);
 	return (result);
 }
 
@@ -270,30 +330,65 @@ acpi_cpufreq_guess_freq (
 	struct cpufreq_acpi_io	*data,
 	unsigned int		cpu)
 {
+	struct acpi_processor_performance	*perf = data->acpi_data;
+
 	if (cpu_khz) {
 		/* search the closest match to cpu_khz */
 		unsigned int i;
 		unsigned long freq;
-		unsigned long freqn = data->acpi_data.states[0].core_frequency * 1000;
+		unsigned long freqn = perf->states[0].core_frequency * 1000;
 
-		for (i=0; i < (data->acpi_data.state_count - 1); i++) {
+		for (i = 0; i < (perf->state_count - 1); i++) {
 			freq = freqn;
-			freqn = data->acpi_data.states[i+1].core_frequency * 1000;
+			freqn = perf->states[i+1].core_frequency * 1000;
 			if ((2 * cpu_khz) > (freqn + freq)) {
-				data->acpi_data.state = i;
+				perf->state = i;
 				return (freq);
 			}
 		}
-		data->acpi_data.state = data->acpi_data.state_count - 1;
+		perf->state = perf->state_count - 1;
 		return (freqn);
-	} else
+	} else {
 		/* assume CPU is at P0... */
-		data->acpi_data.state = 0;
-		return data->acpi_data.states[0].core_frequency * 1000;
-	
+		perf->state = 0;
+		return perf->states[0].core_frequency * 1000;
+	}
 }
 
 
+/*
+ * acpi_cpufreq_early_init - initialize ACPI P-States library
+ *
+ * Initialize the ACPI P-States library (drivers/acpi/processor_perflib.c)
+ * in order to determine correct frequency and voltage pairings. We can
+ * do _PDC and _PSD and find out the processor dependency for the
+ * actual init that will happen later...
+ */
+static int acpi_cpufreq_early_init_acpi(void)
+{
+	struct acpi_processor_performance	*data;
+	unsigned int				i, j;
+
+	dprintk("acpi_cpufreq_early_init\n");
+
+	for_each_cpu(i) {
+		data = kzalloc(sizeof(struct acpi_processor_performance), 
+			GFP_KERNEL);
+		if (!data) {
+			for_each_cpu(j) {
+				kfree(acpi_perf_data[j]);
+				acpi_perf_data[j] = NULL;
+			}
+			return (-ENOMEM);
+		}
+		acpi_perf_data[i] = data;
+	}
+
+	/* Do initialization in ACPI core */
+	acpi_processor_preregister_performance(acpi_perf_data);
+	return 0;
+}
+
 static int
 acpi_cpufreq_cpu_init (
 	struct cpufreq_policy   *policy)
@@ -303,41 +398,51 @@ acpi_cpufreq_cpu_init (
 	struct cpufreq_acpi_io	*data;
 	unsigned int		result = 0;
 	struct cpuinfo_x86 *c = &cpu_data[policy->cpu];
+	struct acpi_processor_performance	*perf;
 
 	dprintk("acpi_cpufreq_cpu_init\n");
 
+	if (!acpi_perf_data[cpu])
+		return (-ENODEV);
+
 	data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
 	if (!data)
 		return (-ENOMEM);
 
+	data->acpi_data = acpi_perf_data[cpu];
 	acpi_io_data[cpu] = data;
 
-	result = acpi_processor_register_performance(&data->acpi_data, cpu);
+	result = acpi_processor_register_performance(data->acpi_data, cpu);
 
 	if (result)
 		goto err_free;
 
+	perf = data->acpi_data;
+	policy->cpus = perf->shared_cpu_map;
+	policy->shared_type = perf->shared_type;
+
 	if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
 		acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
 	}
 
 	/* capability check */
-	if (data->acpi_data.state_count <= 1) {
+	if (perf->state_count <= 1) {
 		dprintk("No P-States\n");
 		result = -ENODEV;
 		goto err_unreg;
 	}
-	if ((data->acpi_data.control_register.space_id != ACPI_ADR_SPACE_SYSTEM_IO) ||
-	    (data->acpi_data.status_register.space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+
+	if ((perf->control_register.space_id != ACPI_ADR_SPACE_SYSTEM_IO) ||
+	    (perf->status_register.space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
 		dprintk("Unsupported address space [%d, %d]\n",
-			(u32) (data->acpi_data.control_register.space_id),
-			(u32) (data->acpi_data.status_register.space_id));
+			(u32) (perf->control_register.space_id),
+			(u32) (perf->status_register.space_id));
 		result = -ENODEV;
 		goto err_unreg;
 	}
 
 	/* alloc freq_table */
-	data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) * (data->acpi_data.state_count + 1), GFP_KERNEL);
+	data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) * (perf->state_count + 1), GFP_KERNEL);
 	if (!data->freq_table) {
 		result = -ENOMEM;
 		goto err_unreg;
@@ -345,9 +450,9 @@ acpi_cpufreq_cpu_init (
 
 	/* detect transition latency */
 	policy->cpuinfo.transition_latency = 0;
-	for (i=0; i<data->acpi_data.state_count; i++) {
-		if ((data->acpi_data.states[i].transition_latency * 1000) > policy->cpuinfo.transition_latency)
-			policy->cpuinfo.transition_latency = data->acpi_data.states[i].transition_latency * 1000;
+	for (i=0; i<perf->state_count; i++) {
+		if ((perf->states[i].transition_latency * 1000) > policy->cpuinfo.transition_latency)
+			policy->cpuinfo.transition_latency = perf->states[i].transition_latency * 1000;
 	}
 	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
 
@@ -355,11 +460,11 @@ acpi_cpufreq_cpu_init (
 	policy->cur = acpi_cpufreq_guess_freq(data, policy->cpu);
 
 	/* table init */
-	for (i=0; i<=data->acpi_data.state_count; i++)
+	for (i=0; i<=perf->state_count; i++)
 	{
 		data->freq_table[i].index = i;
-		if (i<data->acpi_data.state_count)
-			data->freq_table[i].frequency = data->acpi_data.states[i].core_frequency * 1000;
+		if (i<perf->state_count)
+			data->freq_table[i].frequency = perf->states[i].core_frequency * 1000;
 		else
 			data->freq_table[i].frequency = CPUFREQ_TABLE_END;
 	}
@@ -374,12 +479,12 @@ acpi_cpufreq_cpu_init (
 
 	printk(KERN_INFO "acpi-cpufreq: CPU%u - ACPI performance management activated.\n",
 	       cpu);
-	for (i = 0; i < data->acpi_data.state_count; i++)
+	for (i = 0; i < perf->state_count; i++)
 		dprintk("     %cP%d: %d MHz, %d mW, %d uS\n",
-			(i == data->acpi_data.state?'*':' '), i,
-			(u32) data->acpi_data.states[i].core_frequency,
-			(u32) data->acpi_data.states[i].power,
-			(u32) data->acpi_data.states[i].transition_latency);
+			(i == perf->state?'*':' '), i,
+			(u32) perf->states[i].core_frequency,
+			(u32) perf->states[i].power,
+			(u32) perf->states[i].transition_latency);
 
 	cpufreq_frequency_table_get_attr(data->freq_table, policy->cpu);
 	
@@ -394,7 +499,7 @@ acpi_cpufreq_cpu_init (
  err_freqfree:
 	kfree(data->freq_table);
  err_unreg:
-	acpi_processor_unregister_performance(&data->acpi_data, cpu);
+	acpi_processor_unregister_performance(perf, cpu);
  err_free:
 	kfree(data);
 	acpi_io_data[cpu] = NULL;
@@ -415,7 +520,7 @@ acpi_cpufreq_cpu_exit (
 	if (data) {
 		cpufreq_frequency_table_put_attr(policy->cpu);
 		acpi_io_data[policy->cpu] = NULL;
-		acpi_processor_unregister_performance(&data->acpi_data, policy->cpu);
+		acpi_processor_unregister_performance(data->acpi_data, policy->cpu);
 		kfree(data);
 	}
 
@@ -462,7 +567,10 @@ acpi_cpufreq_init (void)
 
 	dprintk("acpi_cpufreq_init\n");
 
- 	result = cpufreq_register_driver(&acpi_cpufreq_driver);
+	result = acpi_cpufreq_early_init_acpi();
+
+	if (!result)
+ 		result = cpufreq_register_driver(&acpi_cpufreq_driver);
 	
 	return (result);
 }
@@ -471,10 +579,15 @@ acpi_cpufreq_init (void)
 static void __exit
 acpi_cpufreq_exit (void)
 {
+	unsigned int	i;
 	dprintk("acpi_cpufreq_exit\n");
 
 	cpufreq_unregister_driver(&acpi_cpufreq_driver);
 
+	for_each_cpu(i) {
+		kfree(acpi_perf_data[i]);
+		acpi_perf_data[i] = NULL;
+	}
 	return;
 }
 
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
index b4277f58f40c..2d6491672559 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -120,7 +120,7 @@ static int pending_bit_stuck(void)
 {
 	u32 lo, hi;
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		return 0;
 
 	rdmsr(MSR_FIDVID_STATUS, lo, hi);
@@ -136,7 +136,7 @@ static int query_current_values_with_pending_wait(struct powernow_k8_data *data)
 	u32 lo, hi;
 	u32 i = 0;
 
-	if (cpu_family) {
+	if (cpu_family == CPU_HW_PSTATE) {
 		rdmsr(MSR_PSTATE_STATUS, lo, hi);
 		i = lo & HW_PSTATE_MASK;
 		rdmsr(MSR_PSTATE_DEF_BASE + i, lo, hi);
@@ -598,7 +598,7 @@ static void print_basics(struct powernow_k8_data *data)
 	int j;
 	for (j = 0; j < data->numps; j++) {
 		if (data->powernow_table[j].frequency != CPUFREQ_ENTRY_INVALID) {
-			if (cpu_family) {
+			if (cpu_family == CPU_HW_PSTATE) {
 			printk(KERN_INFO PFX "   %d : fid 0x%x gid 0x%x (%d MHz)\n", j, (data->powernow_table[j].index & 0xff00) >> 8,
 				(data->powernow_table[j].index & 0xff0000) >> 16,
 				data->powernow_table[j].frequency/1000);
@@ -758,7 +758,7 @@ static int find_psb_table(struct powernow_k8_data *data)
 #ifdef CONFIG_X86_POWERNOW_K8_ACPI
 static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index)
 {
-	if (!data->acpi_data.state_count || cpu_family)
+	if (!data->acpi_data.state_count || (cpu_family == CPU_HW_PSTATE))
 		return;
 
 	data->irt = (data->acpi_data.states[index].control >> IRT_SHIFT) & IRT_MASK;
@@ -801,7 +801,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 		goto err_out;
 	}
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		ret_val = fill_powernow_table_pstate(data, powernow_table);
 	else
 		ret_val = fill_powernow_table_fidvid(data, powernow_table);
@@ -885,8 +885,8 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpuf
 		u32 vid;
 
 		if (data->exttype) {
-			fid = data->acpi_data.states[i].status & FID_MASK;
-			vid = (data->acpi_data.states[i].status >> VID_SHIFT) & VID_MASK;
+			fid = data->acpi_data.states[i].status & EXT_FID_MASK;
+			vid = (data->acpi_data.states[i].status >> VID_SHIFT) & EXT_VID_MASK;
 		} else {
 			fid = data->acpi_data.states[i].control & FID_MASK;
 			vid = (data->acpi_data.states[i].control >> VID_SHIFT) & VID_MASK;
@@ -1082,7 +1082,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 	if (query_current_values_with_pending_wait(data))
 		goto err_out;
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		dprintk("targ: curr fid 0x%x, did 0x%x\n",
 			data->currfid, data->currvid);
 	else {
@@ -1103,7 +1103,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 
 	powernow_k8_acpi_pst_values(data, newstate);
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		ret = transition_frequency_pstate(data, newstate);
 	else
 		ret = transition_frequency_fidvid(data, newstate);
@@ -1115,7 +1115,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 	}
 	mutex_unlock(&fidvid_mutex);
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		pol->cur = find_khz_freq_from_fiddid(data->currfid, data->currdid);
 	else
 		pol->cur = find_khz_freq_from_fid(data->currfid);
@@ -1163,7 +1163,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
 		 * Use the PSB BIOS structure. This is only availabe on
 		 * an UP version, and is deprecated by AMD.
 		 */
-		if ((num_online_cpus() != 1) || (num_possible_cpus() != 1)) {
+		if (num_online_cpus() != 1) {
 			printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
 			kfree(data);
 			return -ENODEV;
@@ -1197,14 +1197,14 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
 	if (query_current_values_with_pending_wait(data))
 		goto err_out;
 
-	if (!cpu_family)
+	if (cpu_family == CPU_OPTERON)
 		fidvid_msr_init();
 
 	/* run on any CPU again */
 	set_cpus_allowed(current, oldmask);
 
 	pol->governor = CPUFREQ_DEFAULT_GOVERNOR;
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		pol->cpus = cpumask_of_cpu(pol->cpu);
 	else
 		pol->cpus = cpu_core_map[pol->cpu];
@@ -1215,7 +1215,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
 	pol->cpuinfo.transition_latency = (((data->rvo + 8) * data->vstable * VST_UNITS_20US)
 	    + (3 * (1 << data->irt) * 10)) * 1000;
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		pol->cur = find_khz_freq_from_fiddid(data->currfid, data->currdid);
 	else
 		pol->cur = find_khz_freq_from_fid(data->currfid);
@@ -1232,7 +1232,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
 
 	cpufreq_frequency_table_get_attr(data->powernow_table, pol->cpu);
 
-	if (cpu_family)
+	if (cpu_family == CPU_HW_PSTATE)
 		dprintk("cpu_init done, current fid 0x%x, did 0x%x\n",
 			data->currfid, data->currdid);
 	else
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h
index bf8ad9e43da3..0fb2a3001ba5 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h
@@ -169,7 +169,9 @@ struct powernow_k8_data {
 #define MVS_MASK        3
 #define VST_MASK     0x7f
 #define VID_MASK     0x1f
-#define FID_MASK     0x3f
+#define FID_MASK     0x1f
+#define EXT_VID_MASK 0x3f
+#define EXT_FID_MASK 0x3f
 
 
 /*
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index ce54ff12c15d..31c3a5baaa7f 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -2,19 +2,15 @@
  * cpufreq driver for Enhanced SpeedStep, as found in Intel's Pentium
  * M (part of the Centrino chipset).
  *
+ * Since the original Pentium M, most new Intel CPUs support Enhanced
+ * SpeedStep.
+ *
  * Despite the "SpeedStep" in the name, this is almost entirely unlike
  * traditional SpeedStep.
  *
  * Modelled on speedstep.c
  *
  * Copyright (C) 2003 Jeremy Fitzhardinge <jeremy@goop.org>
- *
- * WARNING WARNING WARNING
- *
- * This driver manipulates the PERF_CTL MSR, which is only somewhat
- * documented.  While it seems to work on my laptop, it has not been
- * tested anywhere else, and it may not work for you, do strange
- * things or simply crash.
  */
 
 #include <linux/kernel.h>
@@ -36,7 +32,7 @@
 #include <asm/cpufeature.h>
 
 #define PFX		"speedstep-centrino: "
-#define MAINTAINER	"Jeremy Fitzhardinge <jeremy@goop.org>"
+#define MAINTAINER	"cpufreq@lists.linux.org.uk"
 
 #define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-centrino", msg)
 
@@ -351,7 +347,36 @@ static unsigned int get_cur_freq(unsigned int cpu)
 
 #ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
 
-static struct acpi_processor_performance p;
+static struct acpi_processor_performance *acpi_perf_data[NR_CPUS];
+
+/*
+ * centrino_cpu_early_init_acpi - Do the preregistering with ACPI P-States
+ * library
+ *
+ * Before doing the actual init, we need to do _PSD related setup whenever
+ * supported by the BIOS. These are handled by this early_init routine.
+ */
+static int centrino_cpu_early_init_acpi(void)
+{
+	unsigned int	i, j;
+	struct acpi_processor_performance	*data;
+
+	for_each_cpu(i) {
+		data = kzalloc(sizeof(struct acpi_processor_performance), 
+				GFP_KERNEL);
+		if (!data) {
+			for_each_cpu(j) {
+				kfree(acpi_perf_data[j]);
+				acpi_perf_data[j] = NULL;
+			}
+			return (-ENOMEM);
+		}
+		acpi_perf_data[i] = data;
+	}
+
+	acpi_processor_preregister_performance(acpi_perf_data);
+	return 0;
+}
 
 /*
  * centrino_cpu_init_acpi - register with ACPI P-States library
@@ -365,46 +390,51 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 	unsigned long			cur_freq;
 	int				result = 0, i;
 	unsigned int			cpu = policy->cpu;
+	struct acpi_processor_performance	*p;
+
+	p = acpi_perf_data[cpu];
 
 	/* register with ACPI core */
-	if (acpi_processor_register_performance(&p, cpu)) {
-		dprintk("obtaining ACPI data failed\n");
+	if (acpi_processor_register_performance(p, cpu)) {
+		dprintk(PFX "obtaining ACPI data failed\n");
 		return -EIO;
 	}
+	policy->cpus = p->shared_cpu_map;
+	policy->shared_type = p->shared_type;
 
 	/* verify the acpi_data */
-	if (p.state_count <= 1) {
+	if (p->state_count <= 1) {
 		dprintk("No P-States\n");
 		result = -ENODEV;
 		goto err_unreg;
 	}
 
-	if ((p.control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
-	    (p.status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
+	if ((p->control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
+	    (p->status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
 		dprintk("Invalid control/status registers (%x - %x)\n",
-			p.control_register.space_id, p.status_register.space_id);
+			p->control_register.space_id, p->status_register.space_id);
 		result = -EIO;
 		goto err_unreg;
 	}
 
-	for (i=0; i<p.state_count; i++) {
-		if (p.states[i].control != p.states[i].status) {
+	for (i=0; i<p->state_count; i++) {
+		if (p->states[i].control != p->states[i].status) {
 			dprintk("Different control (%llu) and status values (%llu)\n",
-				p.states[i].control, p.states[i].status);
+				p->states[i].control, p->states[i].status);
 			result = -EINVAL;
 			goto err_unreg;
 		}
 
-		if (!p.states[i].core_frequency) {
+		if (!p->states[i].core_frequency) {
 			dprintk("Zero core frequency for state %u\n", i);
 			result = -EINVAL;
 			goto err_unreg;
 		}
 
-		if (p.states[i].core_frequency > p.states[0].core_frequency) {
+		if (p->states[i].core_frequency > p->states[0].core_frequency) {
 			dprintk("P%u has larger frequency (%llu) than P0 (%llu), skipping\n", i,
-				p.states[i].core_frequency, p.states[0].core_frequency);
-			p.states[i].core_frequency = 0;
+				p->states[i].core_frequency, p->states[0].core_frequency);
+			p->states[i].core_frequency = 0;
 			continue;
 		}
 	}
@@ -416,26 +446,26 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 	}
 
 	centrino_model[cpu]->model_name=NULL;
-	centrino_model[cpu]->max_freq = p.states[0].core_frequency * 1000;
+	centrino_model[cpu]->max_freq = p->states[0].core_frequency * 1000;
 	centrino_model[cpu]->op_points =  kmalloc(sizeof(struct cpufreq_frequency_table) *
-					     (p.state_count + 1), GFP_KERNEL);
+					     (p->state_count + 1), GFP_KERNEL);
         if (!centrino_model[cpu]->op_points) {
                 result = -ENOMEM;
                 goto err_kfree;
         }
 
-        for (i=0; i<p.state_count; i++) {
-		centrino_model[cpu]->op_points[i].index = p.states[i].control;
-		centrino_model[cpu]->op_points[i].frequency = p.states[i].core_frequency * 1000;
+        for (i=0; i<p->state_count; i++) {
+		centrino_model[cpu]->op_points[i].index = p->states[i].control;
+		centrino_model[cpu]->op_points[i].frequency = p->states[i].core_frequency * 1000;
 		dprintk("adding state %i with frequency %u and control value %04x\n", 
 			i, centrino_model[cpu]->op_points[i].frequency, centrino_model[cpu]->op_points[i].index);
 	}
-	centrino_model[cpu]->op_points[p.state_count].frequency = CPUFREQ_TABLE_END;
+	centrino_model[cpu]->op_points[p->state_count].frequency = CPUFREQ_TABLE_END;
 
 	cur_freq = get_cur_freq(cpu);
 
-	for (i=0; i<p.state_count; i++) {
-		if (!p.states[i].core_frequency) {
+	for (i=0; i<p->state_count; i++) {
+		if (!p->states[i].core_frequency) {
 			dprintk("skipping state %u\n", i);
 			centrino_model[cpu]->op_points[i].frequency = CPUFREQ_ENTRY_INVALID;
 			continue;
@@ -451,7 +481,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 		}
 
 		if (cur_freq == centrino_model[cpu]->op_points[i].frequency)
-			p.state = i;
+			p->state = i;
 	}
 
 	/* notify BIOS that we exist */
@@ -464,12 +494,13 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
  err_kfree:
 	kfree(centrino_model[cpu]);
  err_unreg:
-	acpi_processor_unregister_performance(&p, cpu);
-	dprintk("invalid ACPI data\n");
+	acpi_processor_unregister_performance(p, cpu);
+	dprintk(PFX "invalid ACPI data\n");
 	return (result);
 }
 #else
 static inline int centrino_cpu_init_acpi(struct cpufreq_policy *policy) { return -ENODEV; }
+static inline int centrino_cpu_early_init_acpi(void) { return 0; }
 #endif
 
 static int centrino_cpu_init(struct cpufreq_policy *policy)
@@ -555,10 +586,15 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
 
 #ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
 	if (!centrino_model[cpu]->model_name) {
-		dprintk("unregistering and freeing ACPI data\n");
-		acpi_processor_unregister_performance(&p, cpu);
-		kfree(centrino_model[cpu]->op_points);
-		kfree(centrino_model[cpu]);
+		static struct acpi_processor_performance *p;
+
+		if (acpi_perf_data[cpu]) {
+			p = acpi_perf_data[cpu];
+			dprintk("unregistering and freeing ACPI data\n");
+			acpi_processor_unregister_performance(p, cpu);
+			kfree(centrino_model[cpu]->op_points);
+			kfree(centrino_model[cpu]);
+		}
 	}
 #endif
 
@@ -592,63 +628,128 @@ static int centrino_target (struct cpufreq_policy *policy,
 			    unsigned int relation)
 {
 	unsigned int    newstate = 0;
-	unsigned int	msr, oldmsr, h, cpu = policy->cpu;
+	unsigned int	msr, oldmsr = 0, h = 0, cpu = policy->cpu;
 	struct cpufreq_freqs	freqs;
+	cpumask_t		online_policy_cpus;
 	cpumask_t		saved_mask;
-	int			retval;
+	cpumask_t		set_mask;
+	cpumask_t		covered_cpus;
+	int			retval = 0;
+	unsigned int		j, k, first_cpu, tmp;
 
-	if (centrino_model[cpu] == NULL)
+	if (unlikely(centrino_model[cpu] == NULL))
 		return -ENODEV;
 
-	/*
-	 * Support for SMP systems.
-	 * Make sure we are running on the CPU that wants to change frequency
-	 */
-	saved_mask = current->cpus_allowed;
-	set_cpus_allowed(current, policy->cpus);
-	if (!cpu_isset(smp_processor_id(), policy->cpus)) {
-		dprintk("couldn't limit to CPUs in this domain\n");
-		return(-EAGAIN);
+	if (unlikely(cpufreq_frequency_table_target(policy,
+			centrino_model[cpu]->op_points,
+			target_freq,
+			relation,
+			&newstate))) {
+		return -EINVAL;
 	}
 
-	if (cpufreq_frequency_table_target(policy, centrino_model[cpu]->op_points, target_freq,
-					   relation, &newstate)) {
-		retval = -EINVAL;
-		goto migrate_end;
-	}
+#ifdef CONFIG_HOTPLUG_CPU
+	/* cpufreq holds the hotplug lock, so we are safe from here on */
+	cpus_and(online_policy_cpus, cpu_online_map, policy->cpus);
+#else
+	online_policy_cpus = policy->cpus;
+#endif
 
-	msr = centrino_model[cpu]->op_points[newstate].index;
-	rdmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+	saved_mask = current->cpus_allowed;
+	first_cpu = 1;
+	cpus_clear(covered_cpus);
+	for_each_cpu_mask(j, online_policy_cpus) {
+		/*
+		 * Support for SMP systems.
+		 * Make sure we are running on CPU that wants to change freq
+		 */
+		cpus_clear(set_mask);
+		if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
+			cpus_or(set_mask, set_mask, online_policy_cpus);
+		else
+			cpu_set(j, set_mask);
+
+		set_cpus_allowed(current, set_mask);
+		if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) {
+			dprintk("couldn't limit to CPUs in this domain\n");
+			retval = -EAGAIN;
+			if (first_cpu) {
+				/* We haven't started the transition yet. */
+				goto migrate_end;
+			}
+			break;
+		}
 
-	if (msr == (oldmsr & 0xffff)) {
-		retval = 0;
-		dprintk("no change needed - msr was and needs to be %x\n", oldmsr);
-		goto migrate_end;
-	}
+		msr = centrino_model[cpu]->op_points[newstate].index;
+
+		if (first_cpu) {
+			rdmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+			if (msr == (oldmsr & 0xffff)) {
+				dprintk("no change needed - msr was and needs "
+					"to be %x\n", oldmsr);
+				retval = 0;
+				goto migrate_end;
+			}
+
+			freqs.old = extract_clock(oldmsr, cpu, 0);
+			freqs.new = extract_clock(msr, cpu, 0);
+
+			dprintk("target=%dkHz old=%d new=%d msr=%04x\n",
+				target_freq, freqs.old, freqs.new, msr);
+
+			for_each_cpu_mask(k, online_policy_cpus) {
+				freqs.cpu = k;
+				cpufreq_notify_transition(&freqs,
+					CPUFREQ_PRECHANGE);
+			}
+
+			first_cpu = 0;
+			/* all but 16 LSB are reserved, treat them with care */
+			oldmsr &= ~0xffff;
+			msr &= 0xffff;
+			oldmsr |= msr;
+		}
 
-	freqs.cpu = cpu;
-	freqs.old = extract_clock(oldmsr, cpu, 0);
-	freqs.new = extract_clock(msr, cpu, 0);
+		wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+		if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
+			break;
 
-	dprintk("target=%dkHz old=%d new=%d msr=%04x\n",
-		target_freq, freqs.old, freqs.new, msr);
+		cpu_set(j, covered_cpus);
+	}
 
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	for_each_cpu_mask(k, online_policy_cpus) {
+		freqs.cpu = k;
+		cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+	}
 
-	/* all but 16 LSB are "reserved", so treat them with
-	   care */
-	oldmsr &= ~0xffff;
-	msr &= 0xffff;
-	oldmsr |= msr;
+	if (unlikely(retval)) {
+		/*
+		 * We have failed halfway through the frequency change.
+		 * We have sent callbacks to policy->cpus and
+		 * MSRs have already been written on coverd_cpus.
+		 * Best effort undo..
+		 */
 
-	wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+		if (!cpus_empty(covered_cpus)) {
+			for_each_cpu_mask(j, covered_cpus) {
+				set_cpus_allowed(current, cpumask_of_cpu(j));
+				wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+			}
+		}
 
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+		tmp = freqs.new;
+		freqs.new = freqs.old;
+		freqs.old = tmp;
+		for_each_cpu_mask(j, online_policy_cpus) {
+			freqs.cpu = j;
+			cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+			cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+		}
+	}
 
-	retval = 0;
 migrate_end:
 	set_cpus_allowed(current, saved_mask);
-	return (retval);
+	return 0;
 }
 
 static struct freq_attr* centrino_attr[] = {
@@ -690,12 +791,25 @@ static int __init centrino_init(void)
 	if (!cpu_has(cpu, X86_FEATURE_EST))
 		return -ENODEV;
 
+	centrino_cpu_early_init_acpi();
+
 	return cpufreq_register_driver(&centrino_driver);
 }
 
 static void __exit centrino_exit(void)
 {
+#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
+	unsigned int j;
+#endif
+	
 	cpufreq_unregister_driver(&centrino_driver);
+
+#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
+	for_each_cpu(j) {
+		kfree(acpi_perf_data[j]);
+		acpi_perf_data[j] = NULL;
+	}
+#endif
 }
 
 MODULE_AUTHOR ("Jeremy Fitzhardinge <jeremy@goop.org>");
diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c
index 00f2e058797c..fc32c8028e24 100644
--- a/arch/i386/kernel/cpu/cyrix.c
+++ b/arch/i386/kernel/cpu/cyrix.c
@@ -184,7 +184,7 @@ static void __init geode_configure(void)
 
 
 #ifdef CONFIG_PCI
-static struct pci_device_id cyrix_55x0[] = {
+static struct pci_device_id __initdata cyrix_55x0[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5510) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5520) },
 	{ },
@@ -272,14 +272,15 @@ static void __init init_cyrix(struct cpuinfo_x86 *c)
 
 		printk(KERN_INFO "Working around Cyrix MediaGX virtual DMA bugs.\n");
 		isa_dma_bridge_buggy = 2;
-#endif		
-		c->x86_cache_size=16;	/* Yep 16K integrated cache thats it */
- 
+
+
 		/*
 		 *  The 5510/5520 companion chips have a funky PIT.
 		 */  
 		if (pci_dev_present(cyrix_55x0))
 			pit_latch_buggy = 1;
+#endif
+		c->x86_cache_size=16;	/* Yep 16K integrated cache thats it */
 
 		/* GXm supports extended cpuid levels 'ala' AMD */
 		if (c->cpuid_level == 2) {
diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c
index f94cdb7aca50..a19fcb262dbb 100644
--- a/arch/i386/kernel/cpu/proc.c
+++ b/arch/i386/kernel/cpu/proc.c
@@ -52,7 +52,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 
 		/* VIA/Cyrix/Centaur-defined */
 		NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+		"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 
diff --git a/arch/i386/kernel/i387.c b/arch/i386/kernel/i387.c
index d75524758daf..c4351972d9af 100644
--- a/arch/i386/kernel/i387.c
+++ b/arch/i386/kernel/i387.c
@@ -25,7 +25,7 @@
 #define HAVE_HWFP 1
 #endif
 
-static unsigned long mxcsr_feature_mask = 0xffffffff;
+static unsigned long mxcsr_feature_mask __read_mostly = 0xffffffff;
 
 void mxcsr_feature_mask_init(void)
 {
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index 323ef8ab3244..b7636b96e104 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -271,8 +271,8 @@ static int i8259A_shutdown(struct sys_device *dev)
 	 * the kernel initialization code can get it
 	 * out of.
 	 */
-	outb(0xff, 0x21);	/* mask all of 8259A-1 */
-	outb(0xff, 0xA1);	/* mask all of 8259A-1 */
+	outb(0xff, PIC_MASTER_IMR);	/* mask all of 8259A-1 */
+	outb(0xff, PIC_SLAVE_IMR);	/* mask all of 8259A-1 */
 	return 0;
 }
 
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index d70f2ade5cde..a62df3e764c5 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -267,7 +267,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
 # include <linux/slab.h>		/* kmalloc() */
 # include <linux/timer.h>	/* time_after() */
  
-# ifdef CONFIG_BALANCED_IRQ_DEBUG
+#ifdef CONFIG_BALANCED_IRQ_DEBUG
 #  define TDprintk(x...) do { printk("<%ld:%s:%d>: ", jiffies, __FILE__, __LINE__); printk(x); } while (0)
 #  define Dprintk(x...) do { TDprintk(x); } while (0)
 # else
@@ -275,10 +275,15 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
 #  define Dprintk(x...) 
 # endif
 
-
 #define IRQBALANCE_CHECK_ARCH -999
-static int irqbalance_disabled = IRQBALANCE_CHECK_ARCH;
-static int physical_balance = 0;
+#define MAX_BALANCED_IRQ_INTERVAL	(5*HZ)
+#define MIN_BALANCED_IRQ_INTERVAL	(HZ/2)
+#define BALANCED_IRQ_MORE_DELTA		(HZ/10)
+#define BALANCED_IRQ_LESS_DELTA		(HZ)
+
+static int irqbalance_disabled __read_mostly = IRQBALANCE_CHECK_ARCH;
+static int physical_balance __read_mostly;
+static long balanced_irq_interval __read_mostly = MAX_BALANCED_IRQ_INTERVAL;
 
 static struct irq_cpu_info {
 	unsigned long * last_irq;
@@ -297,12 +302,14 @@ static struct irq_cpu_info {
 
 #define CPU_TO_PACKAGEINDEX(i) (first_cpu(cpu_sibling_map[i]))
 
-#define MAX_BALANCED_IRQ_INTERVAL	(5*HZ)
-#define MIN_BALANCED_IRQ_INTERVAL	(HZ/2)
-#define BALANCED_IRQ_MORE_DELTA		(HZ/10)
-#define BALANCED_IRQ_LESS_DELTA		(HZ)
+static cpumask_t balance_irq_affinity[NR_IRQS] = {
+	[0 ... NR_IRQS-1] = CPU_MASK_ALL
+};
 
-static long balanced_irq_interval = MAX_BALANCED_IRQ_INTERVAL;
+void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
+{
+	balance_irq_affinity[irq] = mask;
+}
 
 static unsigned long move(int curr_cpu, cpumask_t allowed_mask,
 			unsigned long now, int direction)
@@ -340,7 +347,7 @@ static inline void balance_irq(int cpu, int irq)
 	if (irqbalance_disabled)
 		return; 
 
-	cpus_and(allowed_mask, cpu_online_map, irq_affinity[irq]);
+	cpus_and(allowed_mask, cpu_online_map, balance_irq_affinity[irq]);
 	new_cpu = move(cpu, allowed_mask, now, 1);
 	if (cpu != new_cpu) {
 		set_pending_irq(irq, cpumask_of_cpu(new_cpu));
@@ -529,7 +536,9 @@ tryanotherirq:
 		}
 	}
 
-	cpus_and(allowed_mask, cpu_online_map, irq_affinity[selected_irq]);
+	cpus_and(allowed_mask,
+		cpu_online_map,
+		balance_irq_affinity[selected_irq]);
 	target_cpu_mask = cpumask_of_cpu(min_loaded);
 	cpus_and(tmp, target_cpu_mask, allowed_mask);
 
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index f3a9c78c4a24..248e922ee13a 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -42,8 +42,8 @@ union irq_ctx {
 	u32                     stack[THREAD_SIZE/sizeof(u32)];
 };
 
-static union irq_ctx *hardirq_ctx[NR_CPUS];
-static union irq_ctx *softirq_ctx[NR_CPUS];
+static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
+static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
 #endif
 
 /*
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index 38806f427849..395a9a6dff88 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -607,7 +607,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
 	struct die_args *args = (struct die_args *)data;
 	int ret = NOTIFY_DONE;
 
-	if (args->regs && user_mode(args->regs))
+	if (args->regs && user_mode_vm(args->regs))
 		return ret;
 
 	switch (val) {
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index e7c138f66c5a..0a865889b2a9 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -91,7 +91,10 @@ MODULE_DESCRIPTION("Intel CPU (IA-32) Microcode Update Driver");
 MODULE_AUTHOR("Tigran Aivazian <tigran@veritas.com>");
 MODULE_LICENSE("GPL");
 
-#define MICROCODE_VERSION 	"1.14"
+static int verbose;
+module_param(verbose, int, 0644);
+
+#define MICROCODE_VERSION 	"1.14a"
 
 #define DEFAULT_UCODE_DATASIZE 	(2000) 	  /* 2000 bytes */
 #define MC_HEADER_SIZE		(sizeof (microcode_header_t))  	  /* 48 bytes */
@@ -122,14 +125,15 @@ static unsigned int user_buffer_size;	/* it's size */
 
 typedef enum mc_error_code {
 	MC_SUCCESS 	= 0,
-	MC_NOTFOUND 	= 1,
-	MC_MARKED 	= 2,
-	MC_ALLOCATED 	= 3,
+	MC_IGNORED 	= 1,
+	MC_NOTFOUND 	= 2,
+	MC_MARKED 	= 3,
+	MC_ALLOCATED 	= 4,
 } mc_error_code_t;
 
 static struct ucode_cpu_info {
 	unsigned int sig;
-	unsigned int pf;
+	unsigned int pf, orig_pf;
 	unsigned int rev;
 	unsigned int cksum;
 	mc_error_code_t err;
@@ -164,6 +168,7 @@ static void collect_cpu_info (void *unused)
 			rdmsr(MSR_IA32_PLATFORM_ID, val[0], val[1]);
 			uci->pf = 1 << ((val[1] >> 18) & 7);
 		}
+		uci->orig_pf = uci->pf;
 	}
 
 	wrmsr(MSR_IA32_UCODE_REV, 0, 0);
@@ -197,21 +202,34 @@ static inline void mark_microcode_update (int cpu_num, microcode_header_t *mc_he
 	pr_debug("   Checksum 0x%x\n", cksum);
 
 	if (mc_header->rev < uci->rev) {
-		printk(KERN_ERR "microcode: CPU%d not 'upgrading' to earlier revision"
-		       " 0x%x (current=0x%x)\n", cpu_num, mc_header->rev, uci->rev);
-		goto out;
+		if (uci->err == MC_NOTFOUND) {
+			uci->err = MC_IGNORED;
+			uci->cksum = mc_header->rev;
+		} else if (uci->err == MC_IGNORED && uci->cksum < mc_header->rev)
+			uci->cksum = mc_header->rev;
 	} else if (mc_header->rev == uci->rev) {
-		/* notify the caller of success on this cpu */
-		uci->err = MC_SUCCESS;
-		goto out;
+		if (uci->err < MC_MARKED) {
+			/* notify the caller of success on this cpu */
+			uci->err = MC_SUCCESS;
+		}
+	} else if (uci->err != MC_ALLOCATED || mc_header->rev > uci->mc->hdr.rev) {
+		pr_debug("microcode: CPU%d found a matching microcode update with "
+			" revision 0x%x (current=0x%x)\n", cpu_num, mc_header->rev, uci->rev);
+		uci->cksum = cksum;
+		uci->pf = pf; /* keep the original mc pf for cksum calculation */
+		uci->err = MC_MARKED; /* found the match */
+		for_each_online_cpu(cpu_num) {
+			if (ucode_cpu_info + cpu_num != uci
+			    && ucode_cpu_info[cpu_num].mc == uci->mc) {
+				uci->mc = NULL;
+				break;
+			}
+		}
+		if (uci->mc != NULL) {
+			vfree(uci->mc);
+			uci->mc = NULL;
+		}
 	}
-
-	pr_debug("microcode: CPU%d found a matching microcode update with "
-		" revision 0x%x (current=0x%x)\n", cpu_num, mc_header->rev, uci->rev);
-	uci->cksum = cksum;
-	uci->pf = pf; /* keep the original mc pf for cksum calculation */
-	uci->err = MC_MARKED; /* found the match */
-out:
 	return;
 }
 
@@ -253,10 +271,8 @@ static int find_matching_ucodes (void)
 
 		for_each_online_cpu(cpu_num) {
 			struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
-			if (uci->err != MC_NOTFOUND) /* already found a match or not an online cpu*/
-				continue;
 
-			if (sigmatch(mc_header.sig, uci->sig, mc_header.pf, uci->pf))
+			if (sigmatch(mc_header.sig, uci->sig, mc_header.pf, uci->orig_pf))
 				mark_microcode_update(cpu_num, &mc_header, mc_header.sig, mc_header.pf, mc_header.cksum);
 		}
 
@@ -295,9 +311,8 @@ static int find_matching_ucodes (void)
 				}
 				for_each_online_cpu(cpu_num) {
 					struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
-					if (uci->err != MC_NOTFOUND) /* already found a match or not an online cpu*/
-						continue;
-					if (sigmatch(ext_sig.sig, uci->sig, ext_sig.pf, uci->pf)) {
+
+					if (sigmatch(ext_sig.sig, uci->sig, ext_sig.pf, uci->orig_pf)) {
 						mark_microcode_update(cpu_num, &mc_header, ext_sig.sig, ext_sig.pf, ext_sig.cksum);
 					}
 				}
@@ -368,6 +383,13 @@ static void do_update_one (void * unused)
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
 
 	if (uci->mc == NULL) {
+		if (verbose) {
+			if (uci->err == MC_SUCCESS)
+				printk(KERN_INFO "microcode: CPU%d already at revision 0x%x\n",
+					cpu_num, uci->rev);
+			else
+				printk(KERN_INFO "microcode: No new microcode data for CPU%d\n", cpu_num);
+		}
 		return;
 	}
 
@@ -426,6 +448,9 @@ out_free:
 					ucode_cpu_info[j].mc = NULL;
 			}
 		}
+		if (ucode_cpu_info[i].err == MC_IGNORED && verbose)
+			printk(KERN_WARNING "microcode: CPU%d not 'upgrading' to earlier revision"
+			       " 0x%x (current=0x%x)\n", i, ucode_cpu_info[i].cksum, ucode_cpu_info[i].rev);
 	}
 out:
 	return error;
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index dd6b0e3386ce..e6023970aa40 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -48,6 +48,7 @@
 #include <linux/crash_dump.h>
 #include <linux/dmi.h>
 #include <linux/pfn.h>
+#include <linux/suspend.h>
 
 #include <video/edid.h>
 
@@ -1434,6 +1435,111 @@ static void set_mca_bus(int x)
 static void set_mca_bus(int x) { }
 #endif
 
+#ifdef CONFIG_SOFTWARE_SUSPEND
+static void __init mark_nosave_page_range(unsigned long start, unsigned long end)
+{
+	struct page *page;
+	while (start <= end) {
+		page = pfn_to_page(start);
+		SetPageNosave(page);
+		start++;
+	}
+}
+
+static void __init e820_nosave_reserved_pages(void)
+{
+	int i;
+	unsigned long r_start = 0, r_end = 0;
+
+	/* Assume e820 map is sorted */
+	for (i = 0; i < e820.nr_map; i++) {
+		struct e820entry *ei = &e820.map[i];
+		unsigned long start, end;
+
+		start = PFN_DOWN(ei->addr);
+		end = PFN_UP(ei->addr + ei->size);
+		if (start >= end)
+			continue;
+		if (ei->type == E820_RESERVED)
+			continue;
+		r_end = start;
+		/*
+		 * Highmem 'Reserved' pages are marked as reserved, swsusp
+		 * will not save/restore them, so we ignore these pages here.
+		 */
+		if (r_end > max_low_pfn)
+			r_end = max_low_pfn;
+		if (r_end > r_start)
+			mark_nosave_page_range(r_start, r_end-1);
+		if (r_end >= max_low_pfn)
+			break;
+		r_start = end;
+	}
+}
+
+static void __init e820_save_acpi_pages(void)
+{
+	int i;
+
+	/* Assume e820 map is sorted */
+	for (i = 0; i < e820.nr_map; i++) {
+		struct e820entry *ei = &e820.map[i];
+		unsigned long start, end;
+
+		start = ei->addr;
+		end = ei->addr + ei->size;
+		if (start >= end)
+			continue;
+		if (ei->type != E820_ACPI && ei->type != E820_NVS)
+			continue;
+		/*
+		 * If the region is below max_low_pfn, it will be
+		 * saved/restored by swsusp follow 'RAM' type.
+		 */
+		if (start < (max_low_pfn << PAGE_SHIFT))
+			start = max_low_pfn << PAGE_SHIFT;
+		/*
+		 * Highmem pages (ACPI NVS/Data) are reserved, but swsusp
+		 * highmem save/restore will not save/restore them. We marked
+		 * them as arch saveable pages here
+		 */
+		if (end > start)
+			swsusp_add_arch_pages(start, end);
+	}
+}
+
+extern char __start_rodata, __end_rodata;
+/*
+ * BIOS reserved region/hole - no save/restore
+ * ACPI NVS - save/restore
+ * ACPI Data - this is a little tricky, the mem could be used by OS after OS
+ * reads tables from the region, but anyway save/restore the memory hasn't any
+ * side effect and Linux runtime module load/unload might use it.
+ * kernel rodata - no save/restore (kernel rodata isn't changed)
+ */
+static int __init mark_nosave_pages(void)
+{
+	unsigned long pfn_start, pfn_end;
+
+	/* FIXME: provide a version for efi BIOS */
+	if (efi_enabled)
+		return 0;
+	/* BIOS reserved regions & holes */
+	e820_nosave_reserved_pages();
+
+	/* kernel rodata */
+	pfn_start = PFN_UP(virt_to_phys(&__start_rodata));
+	pfn_end = PFN_DOWN(virt_to_phys(&__end_rodata));
+	mark_nosave_page_range(pfn_start, pfn_end-1);
+
+	/* record ACPI Data/NVS as saveable */
+	e820_save_acpi_pages();
+
+	return 0;
+}
+core_initcall(mark_nosave_pages);
+#endif
+
 /*
  * Determine if we were loaded by an EFI loader.  If so, then we have also been
  * passed the efi memmap, systab, etc., so we should use these data structures
diff --git a/arch/i386/kernel/srat.c b/arch/i386/kernel/srat.c
index 52b3ed5d2cb5..989c85255dbe 100644
--- a/arch/i386/kernel/srat.c
+++ b/arch/i386/kernel/srat.c
@@ -39,7 +39,6 @@
 #define NODE_ARRAY_OFFSET(x)	((x) % 8)	/* 8 bits/char */
 #define BMAP_SET(bmap, bit)	((bmap)[NODE_ARRAY_INDEX(bit)] |= 1 << NODE_ARRAY_OFFSET(bit))
 #define BMAP_TEST(bmap, bit)	((bmap)[NODE_ARRAY_INDEX(bit)] & (1 << NODE_ARRAY_OFFSET(bit)))
-#define MAX_PXM_DOMAINS		256	/* 1 byte and no promises about values */
 /* bitmap length; _PXM is at most 255 */
 #define PXM_BITMAP_LEN (MAX_PXM_DOMAINS / 8) 
 static u8 pxm_bitmap[PXM_BITMAP_LEN];	/* bitmap of proximity domains */
@@ -213,19 +212,11 @@ static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_c
 		node_end_pfn[nid] = memory_chunk->end_pfn;
 }
 
-static u8 pxm_to_nid_map[MAX_PXM_DOMAINS];/* _PXM to logical node ID map */
-
-int pxm_to_node(int pxm)
-{
-	return pxm_to_nid_map[pxm];
-}
-
 /* Parse the ACPI Static Resource Affinity Table */
 static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 {
 	u8 *start, *end, *p;
 	int i, j, nid;
-	u8 nid_to_pxm_map[MAX_NUMNODES];/* logical node ID to _PXM map */
 
 	start = (u8 *)(&(sratp->reserved) + 1);	/* skip header */
 	p = start;
@@ -235,10 +226,6 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 	memset(node_memory_chunk, 0, sizeof(node_memory_chunk));
 	memset(zholes_size, 0, sizeof(zholes_size));
 
-	/* -1 in these maps means not available */
-	memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
-	memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
-
 	num_memory_chunks = 0;
 	while (p < end) {
 		switch (*p) {
@@ -278,9 +265,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 	nodes_clear(node_online_map);
 	for (i = 0; i < MAX_PXM_DOMAINS; i++) {
 		if (BMAP_TEST(pxm_bitmap, i)) {
-			nid = num_online_nodes();
-			pxm_to_nid_map[i] = nid;
-			nid_to_pxm_map[nid] = i;
+			int nid = acpi_map_pxm_to_node(i);
 			node_set_online(nid);
 		}
 	}
@@ -288,7 +273,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 
 	/* set cnode id in memory chunk structure */
 	for (i = 0; i < num_memory_chunks; i++)
-		node_memory_chunk[i].nid = pxm_to_nid_map[node_memory_chunk[i].pxm];
+		node_memory_chunk[i].nid = pxm_to_node(node_memory_chunk[i].pxm);
 
 	printk("pxm bitmap: ");
 	for (i = 0; i < sizeof(pxm_bitmap); i++) {
diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S
index af56987f69b0..dd63d4775398 100644
--- a/arch/i386/kernel/syscall_table.S
+++ b/arch/i386/kernel/syscall_table.S
@@ -316,3 +316,4 @@ ENTRY(sys_call_table)
 	.long sys_sync_file_range
 	.long sys_tee			/* 315 */
 	.long sys_vmsplice
+	.long sys_move_pages
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 0e498369f35e..dcc14477af1f 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -149,6 +149,12 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
 	while (valid_stack_ptr(tinfo, (void *)ebp)) {
 		addr = *(unsigned long *)(ebp + 4);
 		printed = print_addr_and_symbol(addr, log_lvl, printed);
+		/*
+		 * break out of recursive entries (such as
+		 * end_of_stack_stop_unwind_function):
+	 	 */
+		if (ebp == *(unsigned long *)ebp)
+			break;
 		ebp = *(unsigned long *)ebp;
 	}
 #else
@@ -268,8 +274,9 @@ void show_registers(struct pt_regs *regs)
 		regs->esi, regs->edi, regs->ebp, esp);
 	printk(KERN_EMERG "ds: %04x   es: %04x   ss: %04x\n",
 		regs->xds & 0xffff, regs->xes & 0xffff, ss);
-	printk(KERN_EMERG "Process %s (pid: %d, threadinfo=%p task=%p)",
-		current->comm, current->pid, current_thread_info(), current);
+	printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)",
+		TASK_COMM_LEN, current->comm, current->pid,
+		current_thread_info(), current, current->thread_info);
 	/*
 	 * When in-kernel, we also print out the stack and code at the
 	 * time of the fault..