Merge branch 'core/percpu' into stackprotector

Conflicts:
	arch/x86/include/asm/pda.h
	arch/x86/include/asm/system.h

Also, moved include/asm-x86/stackprotector.h to arch/x86/include/asm.

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

3 files changed, 129 insertions, 92 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 65d0b72777ea..4cb5964f1499 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -47,7 +47,7 @@
 #endif
 
 static int __initdata acpi_force = 0;
-
+u32 acpi_rsdt_forced;
 #ifdef	CONFIG_ACPI
 int acpi_disabled = 0;
 #else
@@ -538,9 +538,10 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	union acpi_object *obj;
 	struct acpi_madt_local_apic *lapic;
-	cpumask_t tmp_map, new_map;
+	cpumask_var_t tmp_map, new_map;
 	u8 physid;
 	int cpu;
+	int retval = -ENOMEM;
 
 	if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
 		return -EINVAL;
@@ -569,23 +570,37 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
 	buffer.length = ACPI_ALLOCATE_BUFFER;
 	buffer.pointer = NULL;
 
-	tmp_map = cpu_present_map;
+	if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
+		goto out;
+
+	if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
+		goto free_tmp_map;
+
+	cpumask_copy(tmp_map, cpu_present_mask);
 	acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
 
 	/*
 	 * If mp_register_lapic successfully generates a new logical cpu
 	 * number, then the following will get us exactly what was mapped
 	 */
-	cpus_andnot(new_map, cpu_present_map, tmp_map);
-	if (cpus_empty(new_map)) {
+	cpumask_andnot(new_map, cpu_present_mask, tmp_map);
+	if (cpumask_empty(new_map)) {
 		printk ("Unable to map lapic to logical cpu number\n");
-		return -EINVAL;
+		retval = -EINVAL;
+		goto free_new_map;
 	}
 
-	cpu = first_cpu(new_map);
+	cpu = cpumask_first(new_map);
 
 	*pcpu = cpu;
-	return 0;
+	retval = 0;
+
+free_new_map:
+	free_cpumask_var(new_map);
+free_tmp_map:
+	free_cpumask_var(tmp_map);
+out:
+	return retval;
 }
 
 /* wrapper to silence section mismatch warning */
@@ -598,7 +613,7 @@ EXPORT_SYMBOL(acpi_map_lsapic);
 int acpi_unmap_lsapic(int cpu)
 {
 	per_cpu(x86_cpu_to_apicid, cpu) = -1;
-	cpu_clear(cpu, cpu_present_map);
+	set_cpu_present(cpu, false);
 	num_processors--;
 
 	return (0);
@@ -897,8 +912,8 @@ static u8 __init uniq_ioapic_id(u8 id)
 	DECLARE_BITMAP(used, 256);
 	bitmap_zero(used, 256);
 	for (i = 0; i < nr_ioapics; i++) {
-		struct mp_config_ioapic *ia = &mp_ioapics[i];
-		__set_bit(ia->mp_apicid, used);
+		struct mpc_ioapic *ia = &mp_ioapics[i];
+		__set_bit(ia->apicid, used);
 	}
 	if (!test_bit(id, used))
 		return id;
@@ -930,47 +945,47 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
 
 	idx = nr_ioapics;
 
-	mp_ioapics[idx].mp_type = MP_IOAPIC;
-	mp_ioapics[idx].mp_flags = MPC_APIC_USABLE;
-	mp_ioapics[idx].mp_apicaddr = address;
+	mp_ioapics[idx].type = MP_IOAPIC;
+	mp_ioapics[idx].flags = MPC_APIC_USABLE;
+	mp_ioapics[idx].apicaddr = address;
 
 	set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
-	mp_ioapics[idx].mp_apicid = uniq_ioapic_id(id);
+	mp_ioapics[idx].apicid = uniq_ioapic_id(id);
 #ifdef CONFIG_X86_32
-	mp_ioapics[idx].mp_apicver = io_apic_get_version(idx);
+	mp_ioapics[idx].apicver = io_apic_get_version(idx);
 #else
-	mp_ioapics[idx].mp_apicver = 0;
+	mp_ioapics[idx].apicver = 0;
 #endif
 	/*
 	 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
 	 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
 	 */
-	mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mp_apicid;
+	mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].apicid;
 	mp_ioapic_routing[idx].gsi_base = gsi_base;
 	mp_ioapic_routing[idx].gsi_end = gsi_base +
 	    io_apic_get_redir_entries(idx);
 
-	printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%lx, "
-	       "GSI %d-%d\n", idx, mp_ioapics[idx].mp_apicid,
-	       mp_ioapics[idx].mp_apicver, mp_ioapics[idx].mp_apicaddr,
+	printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
+	       "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
+	       mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
 	       mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
 
 	nr_ioapics++;
 }
 
-static void assign_to_mp_irq(struct mp_config_intsrc *m,
-				    struct mp_config_intsrc *mp_irq)
+static void assign_to_mp_irq(struct mpc_intsrc *m,
+				    struct mpc_intsrc *mp_irq)
 {
-	memcpy(mp_irq, m, sizeof(struct mp_config_intsrc));
+	memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
 }
 
-static int mp_irq_cmp(struct mp_config_intsrc *mp_irq,
-				struct mp_config_intsrc *m)
+static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
+				struct mpc_intsrc *m)
 {
-	return memcmp(mp_irq, m, sizeof(struct mp_config_intsrc));
+	return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
 }
 
-static void save_mp_irq(struct mp_config_intsrc *m)
+static void save_mp_irq(struct mpc_intsrc *m)
 {
 	int i;
 
@@ -988,7 +1003,7 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
 {
 	int ioapic;
 	int pin;
-	struct mp_config_intsrc mp_irq;
+	struct mpc_intsrc mp_irq;
 
 	/*
 	 * Convert 'gsi' to 'ioapic.pin'.
@@ -1006,13 +1021,13 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
 	if ((bus_irq == 0) && (trigger == 3))
 		trigger = 1;
 
-	mp_irq.mp_type = MP_INTSRC;
-	mp_irq.mp_irqtype = mp_INT;
-	mp_irq.mp_irqflag = (trigger << 2) | polarity;
-	mp_irq.mp_srcbus = MP_ISA_BUS;
-	mp_irq.mp_srcbusirq = bus_irq;	/* IRQ */
-	mp_irq.mp_dstapic = mp_ioapics[ioapic].mp_apicid; /* APIC ID */
-	mp_irq.mp_dstirq = pin;	/* INTIN# */
+	mp_irq.type = MP_INTSRC;
+	mp_irq.irqtype = mp_INT;
+	mp_irq.irqflag = (trigger << 2) | polarity;
+	mp_irq.srcbus = MP_ISA_BUS;
+	mp_irq.srcbusirq = bus_irq;	/* IRQ */
+	mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
+	mp_irq.dstirq = pin;	/* INTIN# */
 
 	save_mp_irq(&mp_irq);
 }
@@ -1022,7 +1037,7 @@ void __init mp_config_acpi_legacy_irqs(void)
 	int i;
 	int ioapic;
 	unsigned int dstapic;
-	struct mp_config_intsrc mp_irq;
+	struct mpc_intsrc mp_irq;
 
 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
 	/*
@@ -1047,7 +1062,7 @@ void __init mp_config_acpi_legacy_irqs(void)
 	ioapic = mp_find_ioapic(0);
 	if (ioapic < 0)
 		return;
-	dstapic = mp_ioapics[ioapic].mp_apicid;
+	dstapic = mp_ioapics[ioapic].apicid;
 
 	/*
 	 * Use the default configuration for the IRQs 0-15.  Unless
@@ -1057,16 +1072,14 @@ void __init mp_config_acpi_legacy_irqs(void)
 		int idx;
 
 		for (idx = 0; idx < mp_irq_entries; idx++) {
-			struct mp_config_intsrc *irq = mp_irqs + idx;
+			struct mpc_intsrc *irq = mp_irqs + idx;
 
 			/* Do we already have a mapping for this ISA IRQ? */
-			if (irq->mp_srcbus == MP_ISA_BUS
-			    && irq->mp_srcbusirq == i)
+			if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
 				break;
 
 			/* Do we already have a mapping for this IOAPIC pin */
-			if (irq->mp_dstapic == dstapic &&
-			    irq->mp_dstirq == i)
+			if (irq->dstapic == dstapic && irq->dstirq == i)
 				break;
 		}
 
@@ -1075,13 +1088,13 @@ void __init mp_config_acpi_legacy_irqs(void)
 			continue;	/* IRQ already used */
 		}
 
-		mp_irq.mp_type = MP_INTSRC;
-		mp_irq.mp_irqflag = 0;	/* Conforming */
-		mp_irq.mp_srcbus = MP_ISA_BUS;
-		mp_irq.mp_dstapic = dstapic;
-		mp_irq.mp_irqtype = mp_INT;
-		mp_irq.mp_srcbusirq = i; /* Identity mapped */
-		mp_irq.mp_dstirq = i;
+		mp_irq.type = MP_INTSRC;
+		mp_irq.irqflag = 0;	/* Conforming */
+		mp_irq.srcbus = MP_ISA_BUS;
+		mp_irq.dstapic = dstapic;
+		mp_irq.irqtype = mp_INT;
+		mp_irq.srcbusirq = i; /* Identity mapped */
+		mp_irq.dstirq = i;
 
 		save_mp_irq(&mp_irq);
 	}
@@ -1192,22 +1205,22 @@ int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 			u32 gsi, int triggering, int polarity)
 {
 #ifdef CONFIG_X86_MPPARSE
-	struct mp_config_intsrc mp_irq;
+	struct mpc_intsrc mp_irq;
 	int ioapic;
 
 	if (!acpi_ioapic)
 		return 0;
 
 	/* print the entry should happen on mptable identically */
-	mp_irq.mp_type = MP_INTSRC;
-	mp_irq.mp_irqtype = mp_INT;
-	mp_irq.mp_irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
+	mp_irq.type = MP_INTSRC;
+	mp_irq.irqtype = mp_INT;
+	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
 				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
-	mp_irq.mp_srcbus = number;
-	mp_irq.mp_srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
+	mp_irq.srcbus = number;
+	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
 	ioapic = mp_find_ioapic(gsi);
-	mp_irq.mp_dstapic = mp_ioapic_routing[ioapic].apic_id;
-	mp_irq.mp_dstirq = gsi - mp_ioapic_routing[ioapic].gsi_base;
+	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
+	mp_irq.dstirq = gsi - mp_ioapic_routing[ioapic].gsi_base;
 
 	save_mp_irq(&mp_irq);
 #endif
@@ -1359,6 +1372,17 @@ static void __init acpi_process_madt(void)
 			       "Invalid BIOS MADT, disabling ACPI\n");
 			disable_acpi();
 		}
+	} else {
+		/*
+ 		 * ACPI found no MADT, and so ACPI wants UP PIC mode.
+ 		 * In the event an MPS table was found, forget it.
+ 		 * Boot with "acpi=off" to use MPS on such a system.
+ 		 */
+		if (smp_found_config) {
+			printk(KERN_WARNING PREFIX
+				"No APIC-table, disabling MPS\n");
+			smp_found_config = 0;
+		}
 	}
 
 	/*
@@ -1794,6 +1818,10 @@ static int __init parse_acpi(char *arg)
 			disable_acpi();
 		acpi_ht = 1;
 	}
+	/* acpi=rsdt use RSDT instead of XSDT */
+	else if (strcmp(arg, "rsdt") == 0) {
+		acpi_rsdt_forced = 1;
+	}
 	/* "acpi=noirq" disables ACPI interrupt routing */
 	else if (strcmp(arg, "noirq") == 0) {
 		acpi_noirq_set();
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index c2502eb9aa83..bbbe4bbb6f34 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -56,6 +56,7 @@ static struct cstate_entry *cpu_cstate_entry;	/* per CPU ptr */
 static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
 
 #define MWAIT_SUBSTATE_MASK	(0xf)
+#define MWAIT_CSTATE_MASK	(0xf)
 #define MWAIT_SUBSTATE_SIZE	(4)
 
 #define CPUID_MWAIT_LEAF (5)
@@ -66,39 +67,20 @@ static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
 
 #define NATIVE_CSTATE_BEYOND_HALT	(2)
 
-int acpi_processor_ffh_cstate_probe(unsigned int cpu,
-		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
+static long acpi_processor_ffh_cstate_probe_cpu(void *_cx)
 {
-	struct cstate_entry *percpu_entry;
-	struct cpuinfo_x86 *c = &cpu_data(cpu);
-
-	cpumask_t saved_mask;
-	int retval;
+	struct acpi_processor_cx *cx = _cx;
+	long retval;
 	unsigned int eax, ebx, ecx, edx;
 	unsigned int edx_part;
 	unsigned int cstate_type; /* C-state type and not ACPI C-state type */
 	unsigned int num_cstate_subtype;
 
-	if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF )
-		return -1;
-
-	if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT)
-		return -1;
-
-	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
-	percpu_entry->states[cx->index].eax = 0;
-	percpu_entry->states[cx->index].ecx = 0;
-
-	/* Make sure we are running on right CPU */
-	saved_mask = current->cpus_allowed;
-	retval = set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
-	if (retval)
-		return -1;
-
 	cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
 
 	/* Check whether this particular cx_type (in CST) is supported or not */
-	cstate_type = (cx->address >> MWAIT_SUBSTATE_SIZE) + 1;
+	cstate_type = ((cx->address >> MWAIT_SUBSTATE_SIZE) &
+			MWAIT_CSTATE_MASK) + 1;
 	edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE);
 	num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
 
@@ -114,21 +96,45 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
 		retval = -1;
 		goto out;
 	}
-	percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK;
-
-	/* Use the hint in CST */
-	percpu_entry->states[cx->index].eax = cx->address;
 
 	if (!mwait_supported[cstate_type]) {
 		mwait_supported[cstate_type] = 1;
-		printk(KERN_DEBUG "Monitor-Mwait will be used to enter C-%d "
-		       "state\n", cx->type);
+		printk(KERN_DEBUG
+			"Monitor-Mwait will be used to enter C-%d "
+			"state\n", cx->type);
 	}
-	snprintf(cx->desc, ACPI_CX_DESC_LEN, "ACPI FFH INTEL MWAIT 0x%x",
-		 cx->address);
-
+	snprintf(cx->desc,
+			ACPI_CX_DESC_LEN, "ACPI FFH INTEL MWAIT 0x%x",
+			cx->address);
 out:
-	set_cpus_allowed_ptr(current, &saved_mask);
+	return retval;
+}
+
+int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
+{
+	struct cstate_entry *percpu_entry;
+	struct cpuinfo_x86 *c = &cpu_data(cpu);
+	long retval;
+
+	if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF)
+		return -1;
+
+	if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT)
+		return -1;
+
+	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
+	percpu_entry->states[cx->index].eax = 0;
+	percpu_entry->states[cx->index].ecx = 0;
+
+	/* Make sure we are running on right CPU */
+
+	retval = work_on_cpu(cpu, acpi_processor_ffh_cstate_probe_cpu, cx);
+	if (retval == 0) {
+		/* Use the hint in CST */
+		percpu_entry->states[cx->index].eax = cx->address;
+		percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK;
+	}
 	return retval;
 }
 EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 806b4e9051b4..4abff454c55b 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -101,6 +101,7 @@ int acpi_save_state_mem(void)
 	stack_start.sp = temp_stack + sizeof(temp_stack);
 	early_gdt_descr.address =
 			(unsigned long)get_cpu_gdt_table(smp_processor_id());
+	initial_gs = per_cpu_offset(smp_processor_id());
 #endif
 	initial_code = (unsigned long)wakeup_long64;
 	saved_magic = 0x123456789abcdef0;
@@ -159,6 +160,8 @@ static int __init acpi_sleep_setup(char *str)
 #endif
 		if (strncmp(str, "old_ordering", 12) == 0)
 			acpi_old_suspend_ordering();
+		if (strncmp(str, "s4_nonvs", 8) == 0)
+			acpi_s4_no_nvs();
 		str = strchr(str, ',');
 		if (str != NULL)
 			str += strspn(str, ", \t");