Auto merge with /home/aegl/GIT/linus

53 files changed, 292 insertions, 45 deletions

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index c5739d6309d..083c5df42d3 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -596,6 +596,8 @@ source "fs/Kconfig.binfmt"
 
 endmenu
 
+source "net/Kconfig"
+
 source "drivers/Kconfig"
 
 source "fs/Kconfig"
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8752751f998..7bc4a583f4e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -700,6 +700,8 @@ config APM
 
 endmenu
 
+source "net/Kconfig"
+
 menu "Device Drivers"
 
 source "drivers/base/Kconfig"
@@ -732,7 +734,7 @@ source "drivers/ieee1394/Kconfig"
 
 source "drivers/message/i2o/Kconfig"
 
-source "net/Kconfig"
+source "drivers/net/Kconfig"
 
 source "drivers/isdn/Kconfig"
 
@@ -744,6 +746,8 @@ source "drivers/char/Kconfig"
 
 source "drivers/i2c/Kconfig"
 
+source "drivers/hwmon/Kconfig"
+
 #source "drivers/l3/Kconfig"
 
 source "drivers/misc/Kconfig"
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index a931409c8fe..7ae45c3fc83 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -36,7 +36,7 @@
  * The present bitmask indicates that the CPU is physically present.
  * The online bitmask indicates that the CPU is up and running.
  */
-cpumask_t cpu_present_mask;
+cpumask_t cpu_possible_map;
 cpumask_t cpu_online_map;
 
 /*
@@ -235,7 +235,8 @@ void __init smp_prepare_boot_cpu(void)
 {
 	unsigned int cpu = smp_processor_id();
 
-	cpu_set(cpu, cpu_present_mask);
+	cpu_set(cpu, cpu_possible_map);
+	cpu_set(cpu, cpu_present_map);
 	cpu_set(cpu, cpu_online_map);
 }
 
@@ -355,7 +356,7 @@ void show_ipi_list(struct seq_file *p)
 
 	seq_puts(p, "IPI:");
 
-	for_each_online_cpu(cpu)
+	for_each_present_cpu(cpu)
 		seq_printf(p, " %10lu", per_cpu(ipi_data, cpu).ipi_count);
 
 	seq_putc(p, '\n');
diff --git a/arch/arm/mach-integrator/platsmp.c b/arch/arm/mach-integrator/platsmp.c
index ead15dfcb53..2ba02577709 100644
--- a/arch/arm/mach-integrator/platsmp.c
+++ b/arch/arm/mach-integrator/platsmp.c
@@ -174,11 +174,13 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 		max_cpus = ncores;
 
 	/*
-	 * Initialise the present mask - this tells us which CPUs should
-	 * be present.
+	 * Initialise the possible/present maps.
+	 * cpu_possible_map describes the set of CPUs which may be present
+	 * cpu_present_map describes the set of CPUs populated
 	 */
 	for (i = 0; i < max_cpus; i++) {
-		cpu_set(i, cpu_present_mask);
+		cpu_set(i, cpu_possible_map);
+		cpu_set(i, cpu_present_map);
 	}
 
 	/*
diff --git a/arch/arm/mach-omap1/leds-h2p2-debug.c b/arch/arm/mach-omap1/leds-h2p2-debug.c
index 6e98290cca5..ec0d8285f24 100644
--- a/arch/arm/mach-omap1/leds-h2p2-debug.c
+++ b/arch/arm/mach-omap1/leds-h2p2-debug.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/kernel_stat.h>
 #include <linux/sched.h>
-#include <linux/version.h>
 
 #include <asm/io.h>
 #include <asm/hardware.h>
diff --git a/arch/arm/nwfpe/fpmodule.c b/arch/arm/nwfpe/fpmodule.c
index a806fea5c3e..a8efcf34888 100644
--- a/arch/arm/nwfpe/fpmodule.c
+++ b/arch/arm/nwfpe/fpmodule.c
@@ -24,7 +24,6 @@
 #include "fpa11.h"
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/config.h>
 
 /* XXX */
diff --git a/arch/arm/plat-omap/ocpi.c b/arch/arm/plat-omap/ocpi.c
index 1fb16f9edfd..2ede2ee8cae 100644
--- a/arch/arm/plat-omap/ocpi.c
+++ b/arch/arm/plat-omap/ocpi.c
@@ -25,7 +25,6 @@
 
 #include <linux/config.h>
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
diff --git a/arch/arm26/Kconfig b/arch/arm26/Kconfig
index dc0c1936969..1f037326730 100644
--- a/arch/arm26/Kconfig
+++ b/arch/arm26/Kconfig
@@ -183,6 +183,8 @@ source "mm/Kconfig"
 
 endmenu
 
+source "net/Kconfig"
+
 source "drivers/base/Kconfig"
 
 source "drivers/parport/Kconfig"
@@ -193,7 +195,7 @@ source "drivers/block/Kconfig"
 
 source "drivers/md/Kconfig"
 
-source "net/Kconfig"
+source "drivers/net/Kconfig"
 
 source "drivers/ide/Kconfig"
 
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index f848e376149..e5979d68e35 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -122,6 +122,8 @@ source arch/cris/arch-v10/Kconfig
 
 endmenu
 
+source "net/Kconfig"
+
 # bring in ETRAX built-in drivers
 menu "Drivers for built-in interfaces"
 source arch/cris/arch-v10/drivers/Kconfig
@@ -149,7 +151,7 @@ source "drivers/ieee1394/Kconfig"
 
 source "drivers/message/i2o/Kconfig"
 
-source "net/Kconfig"
+source "drivers/net/Kconfig"
 
 source "drivers/isdn/Kconfig"
 
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index c93f95146cc..ec85c0d6c6d 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -346,6 +346,8 @@ source "fs/Kconfig.binfmt"
 
 endmenu
 
+source "net/Kconfig"
+
 source "drivers/Kconfig"
 
 source "fs/Kconfig"
diff --git a/arch/frv/mb93090-mb00/pci-irq.c b/arch/frv/mb93090-mb00/pci-irq.c
index 24622d89b1c..af981bda015 100644
--- a/arch/frv/mb93090-mb00/pci-irq.c
+++ b/arch/frv/mb93090-mb00/pci-irq.c
@@ -60,7 +60,7 @@ void __init pcibios_fixup_irqs(void)
 	}
 }
 
-void __init pcibios_penalize_isa_irq(int irq)
+void __init pcibios_penalize_isa_irq(int irq, int active)
 {
 }
 
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 62a89e812e3..26698a49f15 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -55,6 +55,8 @@ source "fs/Kconfig.binfmt"
 
 endmenu
 
+source "net/Kconfig"
+
 source "drivers/base/Kconfig"
 
 source "drivers/mtd/Kconfig"
@@ -65,7 +67,7 @@ source "drivers/ide/Kconfig"
 
 source "arch/h8300/Kconfig.ide"
 
-source "net/Kconfig"
+source "drivers/net/Kconfig"
 
 #
 # input - input/joystick depends on it. As does USB.
@@ -179,6 +181,8 @@ source "drivers/serial/Kconfig"
 
 source "drivers/i2c/Kconfig"
 
+source "drivers/hwmon/Kconfig"
+
 source "drivers/usb/Kconfig"
 
 endmenu
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 6c02336fe2e..a801d9d4860 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -1285,6 +1285,8 @@ source "fs/Kconfig.binfmt"
 
 endmenu
 
+source "net/Kconfig"
+
 source "drivers/Kconfig"
 
 source "fs/Kconfig"
diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index ee75cb286cf..5e291a20c03 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -2,3 +2,7 @@ obj-$(CONFIG_ACPI_BOOT)		:= boot.o
 obj-$(CONFIG_X86_IO_APIC)	+= earlyquirk.o
 obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup.o
 
+ifneq ($(CONFIG_ACPI_PROCESSOR),)
+obj-y				+= cstate.o
+endif
+
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
new file mode 100644
index 00000000000..4c3036ba65d
--- /dev/null
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -0,0 +1,103 @@
+/*
+ * arch/i386/kernel/acpi/cstate.c
+ *
+ * Copyright (C) 2005 Intel Corporation
+ * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ * 	- Added _PDC for SMP C-states on 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 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
+ * - When cache is not shared among all CPUs, we flush cache
+ *   before entering C3.
+ * - When cache is shared among all CPUs, we use bm_check
+ *   mechanism as in UP case
+ *
+ * This routine is called only after all the CPUs are online
+ */
+void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
+					unsigned int cpu)
+{
+	struct cpuinfo_x86 *c = cpu_data + cpu;
+
+	flags->bm_check = 0;
+	if (num_online_cpus() == 1)
+		flags->bm_check = 1;
+	else if (c->x86_vendor == X86_VENDOR_INTEL) {
+		/*
+		 * Today all CPUs that support C3 share cache.
+		 * TBD: This needs to look at cache shared map, once
+		 * multi-core detection patch makes to the base.
+		 */
+		flags->bm_check = 1;
+	}
+}
+
+EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
diff --git a/arch/i386/kernel/acpi/wakeup.S b/arch/i386/kernel/acpi/wakeup.S
index 39d32484f6f..44d886c745e 100644
--- a/arch/i386/kernel/acpi/wakeup.S
+++ b/arch/i386/kernel/acpi/wakeup.S
@@ -74,8 +74,9 @@ wakeup_code:
 	movw	%ax,%fs
 	movw	$0x0e00 + 'i', %fs:(0x12)
 	
-	# need a gdt
-	lgdt	real_save_gdt - wakeup_code
+	# need a gdt -- use lgdtl to force 32-bit operands, in case
+	# the GDT is located past 16 megabytes.
+	lgdtl	real_save_gdt - wakeup_code
 
 	movl	real_save_cr0 - wakeup_code, %eax
 	movl	%eax, %cr0
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index 7dcbf70fc16..327a55d4d1c 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -375,7 +375,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 	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 | ACPI_PDC_EST_CAPABILITY_MSR;
+	arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP_MSR;
 
 	p.pdc = &arg_list;
 
diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S
index 3db9a04aec6..468500a7e89 100644
--- a/arch/i386/kernel/syscall_table.S
+++ b/arch/i386/kernel/syscall_table.S
@@ -291,3 +291,6 @@ ENTRY(sys_call_table)
 	.long sys_keyctl
 	.long sys_ioprio_set
 	.long sys_ioprio_get		/* 290 */
+	.long sys_inotify_init
+	.long sys_inotify_add_watch
+	.long sys_inotify_rm_watch
diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c
index 3e439ce5e1b..8680080a6a8 100644
--- a/arch/i386/mach-voyager/voyager_basic.c
+++ b/arch/i386/mach-voyager/voyager_basic.c
@@ -36,6 +36,7 @@
  * Power off function, if any
  */
 void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
 
 int voyager_level = 0;
 
diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 8c8527593da..0e1f4208b07 100644
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -10,6 +10,7 @@
  * the voyager hal to provide the functionality
  */
 #include <linux/config.h>
+#include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/kernel_stat.h>
 #include <linux/delay.h>
@@ -40,6 +41,7 @@ static unsigned long cpu_irq_affinity[NR_CPUS] __cacheline_aligned = { [0 ... NR
 /* per CPU data structure (for /proc/cpuinfo et al), visible externally
  * indexed physically */
 struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
+EXPORT_SYMBOL(cpu_data);
 
 /* physical ID of the CPU used to boot the system */
 unsigned char boot_cpu_id;
@@ -72,6 +74,7 @@ static volatile unsigned long smp_invalidate_needed;
 /* Bitmask of currently online CPUs - used by setup.c for
    /proc/cpuinfo, visible externally but still physical */
 cpumask_t cpu_online_map = CPU_MASK_NONE;
+EXPORT_SYMBOL(cpu_online_map);
 
 /* Bitmask of CPUs present in the system - exported by i386_syms.c, used
  * by scheduler but indexed physically */
@@ -238,6 +241,7 @@ static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 /* This is for the new dynamic CPU boot code */
 cpumask_t cpu_callin_map = CPU_MASK_NONE;
 cpumask_t cpu_callout_map = CPU_MASK_NONE;
+EXPORT_SYMBOL(cpu_callout_map);
 
 /* The per processor IRQ masks (these are usually kept in sync) */
 static __u16 vic_irq_mask[NR_CPUS] __cacheline_aligned;
@@ -978,6 +982,7 @@ void flush_tlb_page(struct vm_area_struct * vma, unsigned long va)
 
 	preempt_enable();
 }
+EXPORT_SYMBOL(flush_tlb_page);
 
 /* enable the requested IRQs */
 static void
@@ -1109,6 +1114,7 @@ smp_call_function (void (*func) (void *info), void *info, int retry,
 
 	return 0;
 }
+EXPORT_SYMBOL(smp_call_function);
 
 /* Sorry about the name.  In an APIC based system, the APICs
  * themselves are programmed to send a timer interrupt.  This is used
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index 78ca1ecbb90..766b104ac1a 100644
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -1051,24 +1051,28 @@ static int __init pcibios_irq_init(void)
 subsys_initcall(pcibios_irq_init);
 
 
-static void pirq_penalize_isa_irq(int irq)
+static void pirq_penalize_isa_irq(int irq, int active)
 {
 	/*
 	 *  If any ISAPnP device reports an IRQ in its list of possible
 	 *  IRQ's, we try to avoid assigning it to PCI devices.
 	 */
-	if (irq < 16)
-		pirq_penalty[irq] += 100;
+	if (irq < 16) {
+		if (active)
+			pirq_penalty[irq] += 1000;
+		else
+			pirq_penalty[irq] += 100;
+	}
 }
 
-void pcibios_penalize_isa_irq(int irq)
+void pcibios_penalize_isa_irq(int irq, int active)
 {
 #ifdef CONFIG_ACPI_PCI
 	if (!acpi_noirq)
-		acpi_penalize_isa_irq(irq);
+		acpi_penalize_isa_irq(irq, active);
 	else
 #endif
-		pirq_penalize_isa_irq(irq);
+		pirq_penalize_isa_irq(irq, active);
 }
 
 static int pirq_enable_irq(struct pci_dev *dev)
diff --git a/arch/i386/pci/visws.c b/arch/i386/pci/visws.c
index 6a924878443..314c933b6b8 100644
--- a/arch/i386/pci/visws.c
+++ b/arch/i386/pci/visws.c
@@ -21,7 +21,7 @@ static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; }
 
 int (*pcibios_enable_irq)(struct pci_dev *dev) = &pci_visws_enable_irq;
 
-void __init pcibios_penalize_isa_irq(int irq) {}
+void __init pcibios_penalize_isa_irq(int irq, int active) {}
 
 
 unsigned int pci_bus0, pci_bus1;
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index bfdd062dd82..cbb3e0cef93 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -416,6 +416,8 @@ endmenu
 
 endif
 
+source "net/Kconfig"
+
 source "drivers/Kconfig"
 
 source "fs/Kconfig"
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 542256e98e6..9609f243e5d 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -11,6 +11,7 @@
  *  Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
  *  Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
  *  Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ *  Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  *
@@ -67,6 +68,11 @@ EXPORT_SYMBOL(pm_power_off);
 unsigned char acpi_kbd_controller_present = 1;
 unsigned char acpi_legacy_devices;
 
+static unsigned int __initdata acpi_madt_rev;
+
+unsigned int acpi_cpei_override;
+unsigned int acpi_cpei_phys_cpuid;
+
 #define MAX_SAPICS 256
 u16 ia64_acpiid_to_sapicid[MAX_SAPICS] =
 	{ [0 ... MAX_SAPICS - 1] = -1 };
@@ -265,10 +271,56 @@ acpi_parse_plat_int_src (
 						(plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
 
 	platform_intr_list[plintsrc->type] = vector;
+	if (acpi_madt_rev > 1) {
+		acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag;
+	}
+
+	/*
+	 * Save the physical id, so we can check when its being removed
+	 */
+	acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
+
 	return 0;
 }
 
 
+unsigned int can_cpei_retarget(void)
+{
+	extern int cpe_vector;
+
+	/*
+	 * Only if CPEI is supported and the override flag
+	 * is present, otherwise return that its re-targettable
+	 * if we are in polling mode.
+	 */
+	if (cpe_vector > 0 && !acpi_cpei_override)
+		return 0;
+	else
+		return 1;
+}
+
+unsigned int is_cpu_cpei_target(unsigned int cpu)
+{
+	unsigned int logical_id;
+
+	logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
+
+	if (logical_id == cpu)
+		return 1;
+	else
+		return 0;
+}
+
+void set_cpei_target_cpu(unsigned int cpu)
+{
+	acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
+}
+
+unsigned int get_cpei_target_cpu(void)
+{
+	return acpi_cpei_phys_cpuid;
+}
+
 static int __init
 acpi_parse_int_src_ovr (
 	acpi_table_entry_header *header, const unsigned long end)
@@ -326,6 +378,8 @@ acpi_parse_madt (unsigned long phys_addr, unsigned long size)
 
 	acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
 
+	acpi_madt_rev = acpi_madt->header.revision;
+
 	/* remember the value for reference after free_initmem() */
 #ifdef CONFIG_ITANIUM
 	has_8259 = 1; /* Firmware on old Itanium systems is broken */
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 736e328b5e6..4ebbf397438 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -271,7 +271,7 @@ ia64_mca_log_sal_error_record(int sal_info_type)
 
 #ifdef CONFIG_ACPI
 
-static int cpe_vector = -1;
+int cpe_vector = -1;
 
 static irqreturn_t
 ia64_mca_cpe_int_handler (int cpe_irq, void *arg, struct pt_regs *ptregs)
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 6e35bff05d5..e484910246a 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -196,6 +196,7 @@ update_pal_halt_status(int status)
 void
 default_idle (void)
 {
+	local_irq_enable();
 	while (!need_resched())
 		if (can_do_pal_halt)
 			safe_halt();
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 7fc891aca44..84f89da7c64 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c