Merge branch 'x86/apic' into x86-v28-for-linus-phase4-B

Conflicts:
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/apic_64.c
	arch/x86/kernel/setup.c
	drivers/pci/intel-iommu.c
	include/asm-x86/cpufeature.h
	include/asm-x86/dma-mapping.h

41 files changed, 356 insertions, 189 deletions

diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index 65590c9aecd..d76a0839abe 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -9,6 +9,8 @@
 #include <asm/apicdef.h>
 #include <asm/processor.h>
 #include <asm/system.h>
+#include <asm/cpufeature.h>
+#include <asm/msr.h>
 
 #define ARCH_APICTIMER_STOPS_ON_C3	1
 
@@ -47,8 +49,6 @@ extern int disable_apic;
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
 #else
-#define apic_write native_apic_write
-#define apic_read native_apic_read
 #define setup_boot_clock setup_boot_APIC_clock
 #define setup_secondary_clock setup_secondary_APIC_clock
 #endif
@@ -60,7 +60,7 @@ extern u64 xapic_icr_read(void);
 extern void xapic_icr_write(u32, u32);
 extern int setup_profiling_timer(unsigned int);
 
-static inline void native_apic_write(unsigned long reg, u32 v)
+static inline void native_apic_mem_write(u32 reg, u32 v)
 {
 	volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
 
@@ -69,15 +69,68 @@ static inline void native_apic_write(unsigned long reg, u32 v)
 		       ASM_OUTPUT2("0" (v), "m" (*addr)));
 }
 
-static inline u32 native_apic_read(unsigned long reg)
+static inline u32 native_apic_mem_read(u32 reg)
 {
 	return *((volatile u32 *)(APIC_BASE + reg));
 }
 
-extern void apic_wait_icr_idle(void);
-extern u32 safe_apic_wait_icr_idle(void);
+static inline void native_apic_msr_write(u32 reg, u32 v)
+{
+	if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
+	    reg == APIC_LVR)
+		return;
+
+	wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0);
+}
+
+static inline u32 native_apic_msr_read(u32 reg)
+{
+	u32 low, high;
+
+	if (reg == APIC_DFR)
+		return -1;
+
+	rdmsr(APIC_BASE_MSR + (reg >> 4), low, high);
+	return low;
+}
+
+#ifndef CONFIG_X86_32
+extern int x2apic, x2apic_preenabled;
+extern void check_x2apic(void);
+extern void enable_x2apic(void);
+extern void enable_IR_x2apic(void);
+extern void x2apic_icr_write(u32 low, u32 id);
+#endif
+
+struct apic_ops {
+	u32 (*read)(u32 reg);
+	void (*write)(u32 reg, u32 v);
+	u64 (*icr_read)(void);
+	void (*icr_write)(u32 low, u32 high);
+	void (*wait_icr_idle)(void);
+	u32 (*safe_wait_icr_idle)(void);
+};
+
+extern struct apic_ops *apic_ops;
+
+#define apic_read (apic_ops->read)
+#define apic_write (apic_ops->write)
+#define apic_icr_read (apic_ops->icr_read)
+#define apic_icr_write (apic_ops->icr_write)
+#define apic_wait_icr_idle (apic_ops->wait_icr_idle)
+#define safe_apic_wait_icr_idle (apic_ops->safe_wait_icr_idle)
+
 extern int get_physical_broadcast(void);
 
+#ifdef CONFIG_X86_64
+static inline void ack_x2APIC_irq(void)
+{
+	/* Docs say use 0 for future compatibility */
+	native_apic_msr_write(APIC_EOI, 0);
+}
+#endif
+
+
 static inline void ack_APIC_irq(void)
 {
 	/*
diff --git a/include/asm-x86/apicdef.h b/include/asm-x86/apicdef.h
index c40687da20f..b922c85ac91 100644
--- a/include/asm-x86/apicdef.h
+++ b/include/asm-x86/apicdef.h
@@ -105,6 +105,7 @@
 #define	APIC_TMICT	0x380
 #define	APIC_TMCCT	0x390
 #define	APIC_TDCR	0x3E0
+#define APIC_SELF_IPI	0x3F0
 #define		APIC_TDR_DIV_TMBASE	(1 << 2)
 #define		APIC_TDR_DIV_1		0xB
 #define		APIC_TDR_DIV_2		0x0
@@ -128,6 +129,8 @@
 #define	APIC_EILVT3     0x530
 
 #define APIC_BASE (fix_to_virt(FIX_APIC_BASE))
+#define APIC_BASE_MSR	0x800
+#define X2APIC_ENABLE	(1UL << 10)
 
 #ifdef CONFIG_X86_32
 # define MAX_IO_APICS 64
diff --git a/include/asm-x86/arch_hooks.h b/include/asm-x86/arch_hooks.h
index 72adc3a109c..de4596b24c2 100644
--- a/include/asm-x86/arch_hooks.h
+++ b/include/asm-x86/arch_hooks.h
@@ -12,8 +12,6 @@
 /* these aren't arch hooks, they are generic routines
  * that can be used by the hooks */
 extern void init_ISA_irqs(void);
-extern void apic_intr_init(void);
-extern void smp_intr_init(void);
 extern irqreturn_t timer_interrupt(int irq, void *dev_id);
 
 /* these are the defined hooks */
diff --git a/include/asm-x86/mach-bigsmp/mach_apic.h b/include/asm-x86/bigsmp/apic.h
index 05362d44a3e..0a9cd7c5ca0 100644
--- a/include/asm-x86/mach-bigsmp/mach_apic.h
+++ b/include/asm-x86/bigsmp/apic.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_BIGSMP__MACH_APIC_H
-#define ASM_X86__MACH_BIGSMP__MACH_APIC_H
+#ifndef __ASM_MACH_APIC_H
+#define __ASM_MACH_APIC_H
 
 #define xapic_phys_to_log_apicid(cpu) (per_cpu(x86_bios_cpu_apicid, cpu))
 #define esr_disable (1)
@@ -11,7 +11,7 @@ static inline int apic_id_registered(void)
 
 /* Round robin the irqs amoung the online cpus */
 static inline cpumask_t target_cpus(void)
-{ 
+{
 	static unsigned long cpu = NR_CPUS;
 	do {
 		if (cpu >= NR_CPUS)
@@ -23,7 +23,7 @@ static inline cpumask_t target_cpus(void)
 }
 
 #undef APIC_DEST_LOGICAL
-#define APIC_DEST_LOGICAL 	0
+#define APIC_DEST_LOGICAL	0
 #define TARGET_CPUS		(target_cpus())
 #define APIC_DFR_VALUE		(APIC_DFR_FLAT)
 #define INT_DELIVERY_MODE	(dest_Fixed)
@@ -141,4 +141,4 @@ static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 	return cpuid_apic >> index_msb;
 }
 
-#endif /* ASM_X86__MACH_BIGSMP__MACH_APIC_H */
+#endif /* __ASM_MACH_APIC_H */
diff --git a/include/asm-x86/bigsmp/apicdef.h b/include/asm-x86/bigsmp/apicdef.h
new file mode 100644
index 00000000000..392c3f5ef2f
--- /dev/null
+++ b/include/asm-x86/bigsmp/apicdef.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_MACH_APICDEF_H
+#define __ASM_MACH_APICDEF_H
+
+#define		APIC_ID_MASK		(0xFF<<24)
+
+static inline unsigned get_apic_id(unsigned long x)
+{
+	return (((x)>>24)&0xFF);
+}
+
+#define		GET_APIC_ID(x)	get_apic_id(x)
+
+#endif
diff --git a/include/asm-x86/mach-summit/mach_ipi.h b/include/asm-x86/bigsmp/ipi.h
index a3b31c528d9..9404c535b7e 100644
--- a/include/asm-x86/mach-summit/mach_ipi.h
+++ b/include/asm-x86/bigsmp/ipi.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_SUMMIT__MACH_IPI_H
-#define ASM_X86__MACH_SUMMIT__MACH_IPI_H
+#ifndef __ASM_MACH_IPI_H
+#define __ASM_MACH_IPI_H
 
 void send_IPI_mask_sequence(cpumask_t mask, int vector);
 
@@ -22,4 +22,4 @@ static inline void send_IPI_all(int vector)
 	send_IPI_mask(cpu_online_map, vector);
 }
 
-#endif /* ASM_X86__MACH_SUMMIT__MACH_IPI_H */
+#endif /* __ASM_MACH_IPI_H */
diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h
index 250fa0cb144..065c6a86ed8 100644
--- a/include/asm-x86/cpufeature.h
+++ b/include/asm-x86/cpufeature.h
@@ -93,6 +93,7 @@
 #define X86_FEATURE_CX16	(4*32+13) /* CMPXCHG16B */
 #define X86_FEATURE_XTPR	(4*32+14) /* Send Task Priority Messages */
 #define X86_FEATURE_DCA		(4*32+18) /* Direct Cache Access */
+#define X86_FEATURE_X2APIC	(4*32+21) /* x2APIC */
 #define X86_FEATURE_XMM4_2	(4*32+20) /* Streaming SIMD Extensions-4.2 */
 
 /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
@@ -192,6 +193,7 @@ extern const char * const x86_power_flags[32];
 #define cpu_has_gbpages		boot_cpu_has(X86_FEATURE_GBPAGES)
 #define cpu_has_arch_perfmon	boot_cpu_has(X86_FEATURE_ARCH_PERFMON)
 #define cpu_has_pat		boot_cpu_has(X86_FEATURE_PAT)
+#define cpu_has_x2apic		boot_cpu_has(X86_FEATURE_X2APIC)
 #define cpu_has_xmm4_2		boot_cpu_has(X86_FEATURE_XMM4_2)
 
 #if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64)
diff --git a/include/asm-x86/mach-es7000/mach_apic.h b/include/asm-x86/es7000/apic.h
index c1f6f682d61..bd2c44d1f7a 100644
--- a/include/asm-x86/mach-es7000/mach_apic.h
+++ b/include/asm-x86/es7000/apic.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_ES7000__MACH_APIC_H
-#define ASM_X86__MACH_ES7000__MACH_APIC_H
+#ifndef __ASM_ES7000_APIC_H
+#define __ASM_ES7000_APIC_H
 
 #define xapic_phys_to_log_apicid(cpu) per_cpu(x86_bios_cpu_apicid, cpu)
 #define esr_disable (1)
@@ -10,7 +10,7 @@ static inline int apic_id_registered(void)
 }
 
 static inline cpumask_t target_cpus(void)
-{ 
+{
 #if defined CONFIG_ES7000_CLUSTERED_APIC
 	return CPU_MASK_ALL;
 #else
@@ -23,24 +23,24 @@ static inline cpumask_t target_cpus(void)
 #define APIC_DFR_VALUE		(APIC_DFR_CLUSTER)
 #define INT_DELIVERY_MODE	(dest_LowestPrio)
 #define INT_DEST_MODE		(1)    /* logical delivery broadcast to all procs */
-#define NO_BALANCE_IRQ 		(1)
+#define NO_BALANCE_IRQ		(1)
 #undef  WAKE_SECONDARY_VIA_INIT
 #define WAKE_SECONDARY_VIA_MIP
 #else
 #define APIC_DFR_VALUE		(APIC_DFR_FLAT)
 #define INT_DELIVERY_MODE	(dest_Fixed)
 #define INT_DEST_MODE		(0)    /* phys delivery to target procs */
-#define NO_BALANCE_IRQ 		(0)
+#define NO_BALANCE_IRQ		(0)
 #undef  APIC_DEST_LOGICAL
 #define APIC_DEST_LOGICAL	0x0
 #define WAKE_SECONDARY_VIA_INIT
 #endif
 
 static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
-{ 
+{
 	return 0;
-} 
-static inline unsigned long check_apicid_present(int bit) 
+}
+static inline unsigned long check_apicid_present(int bit)
 {
 	return physid_isset(bit, phys_cpu_present_map);
 }
@@ -80,7 +80,7 @@ static inline void setup_apic_routing(void)
 {
 	int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
 	printk("Enabling APIC mode:  %s.  Using %d I/O APICs, target cpus %lx\n",
-		(apic_version[apic] == 0x14) ? 
+		(apic_version[apic] == 0x14) ?
 		"Physical Cluster" : "Logical Cluster", nr_ioapics, cpus_addr(TARGET_CPUS)[0]);
 }
 
@@ -141,7 +141,7 @@ static inline void setup_portio_remap(void)
 extern unsigned int boot_cpu_physical_apicid;
 static inline int check_phys_apicid_present(int cpu_physical_apicid)
 {
-	boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
+	boot_cpu_physical_apicid = read_apic_id();
 	return (1);
 }
 
@@ -150,7 +150,7 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
 	int num_bits_set;
 	int cpus_found = 0;
 	int cpu;
-	int apicid;	
+	int apicid;
 
 	num_bits_set = cpus_weight(cpumask);
 	/* Return id to all */
@@ -160,16 +160,16 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
 #else
 		return cpu_to_logical_apicid(0);
 #endif
-	/* 
-	 * The cpus in the mask must all be on the apic cluster.  If are not 
-	 * on the same apicid cluster return default value of TARGET_CPUS. 
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of TARGET_CPUS.
 	 */
 	cpu = first_cpu(cpumask);
 	apicid = cpu_to_logical_apicid(cpu);
 	while (cpus_found < num_bits_set) {
 		if (cpu_isset(cpu, cpumask)) {
 			int new_apicid = cpu_to_logical_apicid(cpu);
-			if (apicid_cluster(apicid) != 
+			if (apicid_cluster(apicid) !=
 					apicid_cluster(new_apicid)){
 				printk ("%s: Not a valid mask!\n",__FUNCTION__);
 #if defined CONFIG_ES7000_CLUSTERED_APIC
@@ -191,4 +191,4 @@ static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 	return cpuid_apic >> index_msb;
 }
 
-#endif /* ASM_X86__MACH_ES7000__MACH_APIC_H */
+#endif /* __ASM_ES7000_APIC_H */
diff --git a/include/asm-x86/es7000/apicdef.h b/include/asm-x86/es7000/apicdef.h
new file mode 100644
index 00000000000..8b234a3cb85
--- /dev/null
+++ b/include/asm-x86/es7000/apicdef.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_ES7000_APICDEF_H
+#define __ASM_ES7000_APICDEF_H
+
+#define		APIC_ID_MASK		(0xFF<<24)
+
+static inline unsigned get_apic_id(unsigned long x)
+{
+	return (((x)>>24)&0xFF);
+}
+
+#define		GET_APIC_ID(x)	get_apic_id(x)
+
+#endif
diff --git a/include/asm-x86/mach-es7000/mach_ipi.h b/include/asm-x86/es7000/ipi.h
index 3a21240e03d..632a955fcc0 100644
--- a/include/asm-x86/mach-es7000/mach_ipi.h
+++ b/include/asm-x86/es7000/ipi.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_ES7000__MACH_IPI_H
-#define ASM_X86__MACH_ES7000__MACH_IPI_H
+#ifndef __ASM_ES7000_IPI_H
+#define __ASM_ES7000_IPI_H
 
 void send_IPI_mask_sequence(cpumask_t mask, int vector);
 
@@ -21,4 +21,4 @@ static inline void send_IPI_all(int vector)
 	send_IPI_mask(cpu_online_map, vector);
 }
 
-#endif /* ASM_X86__MACH_ES7000__MACH_IPI_H */
+#endif /* __ASM_ES7000_IPI_H */
diff --git a/include/asm-x86/mach-es7000/mach_mpparse.h b/include/asm-x86/es7000/mpparse.h
index befde24705b..7b5c889d8e7 100644
--- a/include/asm-x86/mach-es7000/mach_mpparse.h
+++ b/include/asm-x86/es7000/mpparse.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_ES7000__MACH_MPPARSE_H
-#define ASM_X86__MACH_ES7000__MACH_MPPARSE_H
+#ifndef __ASM_ES7000_MPPARSE_H
+#define __ASM_ES7000_MPPARSE_H
 
 #include <linux/acpi.h>
 
@@ -26,4 +26,4 @@ static inline int es7000_check_dsdt(void)
 }
 #endif
 
-#endif /* ASM_X86__MACH_ES7000__MACH_MPPARSE_H */
+#endif /* __ASM_MACH_MPPARSE_H */
diff --git a/include/asm-x86/mach-es7000/mach_wakecpu.h b/include/asm-x86/es7000/wakecpu.h
index 97c776ce13f..3ffc5a7bf66 100644
--- a/include/asm-x86/mach-es7000/mach_wakecpu.h
+++ b/include/asm-x86/es7000/wakecpu.h
@@ -1,7 +1,7 @@
-#ifndef ASM_X86__MACH_ES7000__MACH_WAKECPU_H
-#define ASM_X86__MACH_ES7000__MACH_WAKECPU_H
+#ifndef __ASM_ES7000_WAKECPU_H
+#define __ASM_ES7000_WAKECPU_H
 
-/* 
+/*
  * This file copes with machines that wakeup secondary CPUs by the
  * INIT, INIT, STARTUP sequence.
  */
@@ -56,4 +56,4 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
  #define inquire_remote_apic(apicid) {}
 #endif
 
-#endif /* ASM_X86__MACH_ES7000__MACH_WAKECPU_H */
+#endif /* __ASM_MACH_WAKECPU_H */
diff --git a/include/asm-x86/genapic_64.h b/include/asm-x86/genapic_64.h
index 25097a8cc5e..ed6a4886c08 100644
--- a/include/asm-x86/genapic_64.h
+++ b/include/asm-x86/genapic_64.h
@@ -14,6 +14,7 @@
 
 struct genapic {
 	char *name;
+	int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id);
 	u32 int_delivery_mode;
 	u32 int_dest_mode;
 	int (*apic_id_registered)(void);
@@ -24,17 +25,24 @@ struct genapic {
 	void (*send_IPI_mask)(cpumask_t mask, int vector);
 	void (*send_IPI_allbutself)(int vector);
 	void (*send_IPI_all)(int vector);
+	void (*send_IPI_self)(int vector);
 	/* */
 	unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
 	unsigned int (*phys_pkg_id)(int index_msb);
+	unsigned int (*get_apic_id)(unsigned long x);
+	unsigned long (*set_apic_id)(unsigned int id);
+	unsigned long apic_id_mask;
 };
 
 extern struct genapic *genapic;
 
 extern struct genapic apic_flat;
 extern struct genapic apic_physflat;
+extern struct genapic apic_x2apic_cluster;
+extern struct genapic apic_x2apic_phys;
 extern int acpi_madt_oem_check(char *, char *);
 
+extern void apic_send_IPI_self(int vector);
 enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC, UV_NON_UNIQUE_APIC};
 extern enum uv_system_type get_uv_system_type(void);
 extern int is_uv_system(void);
diff --git a/include/asm-x86/hw_irq.h b/include/asm-x86/hw_irq.h
index 65997b15d56..50f6e0316b5 100644
--- a/include/asm-x86/hw_irq.h
+++ b/include/asm-x86/hw_irq.h
@@ -64,7 +64,6 @@ extern unsigned long io_apic_irqs;
 extern void init_VISWS_APIC_irqs(void);
 extern void setup_IO_APIC(void);
 extern void disable_IO_APIC(void);
-extern void print_IO_APIC(void);
 extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
 extern void setup_ioapic_dest(void);
 
@@ -73,7 +72,9 @@ extern void enable_IO_APIC(void);
 #endif
 
 /* IPI functions */
+#ifdef CONFIG_X86_32
 extern void send_IPI_self(int vector);
+#endif
 extern void send_IPI(int dest, int vector);
 
 /* Statistics */
diff --git a/include/asm-x86/i8259.h b/include/asm-x86/i8259.h
index c586559a695..23c1b3baaec 100644
--- a/include/asm-x86/i8259.h
+++ b/include/asm-x86/i8259.h
@@ -57,4 +57,7 @@ static inline void outb_pic(unsigned char value, unsigned int port)
 
 extern struct irq_chip i8259A_chip;
 
+extern void mask_8259A(void);
+extern void unmask_8259A(void);
+
 #endif /* ASM_X86__I8259_H */
diff --git a/include/asm-x86/io_apic.h b/include/asm-x86/io_apic.h
index be62847ab07..8ec68a50cf1 100644
--- a/include/asm-x86/io_apic.h
+++ b/include/asm-x86/io_apic.h
@@ -107,6 +107,20 @@ struct IO_APIC_route_entry {
 
 } __attribute__ ((packed));
 
+struct IR_IO_APIC_route_entry {
+	__u64	vector		: 8,
+		zero		: 3,
+		index2		: 1,
+		delivery_status : 1,
+		polarity	: 1,
+		irr		: 1,
+		trigger		: 1,
+		mask		: 1,
+		reserved	: 31,
+		format		: 1,
+		index		: 15;
+} __attribute__ ((packed));
+
 #ifdef CONFIG_X86_IO_APIC
 
 /*
@@ -183,6 +197,12 @@ extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
 extern int (*ioapic_renumber_irq)(int ioapic, int irq);
 extern void ioapic_init_mappings(void);
 
+#ifdef CONFIG_X86_64
+extern int save_mask_IO_APIC_setup(void);
+extern void restore_IO_APIC_setup(void);
+extern void reinit_intr_remapped_IO_APIC(int);
+#endif
+
 #else  /* !CONFIG_X86_IO_APIC */
 #define io_apic_assign_pci_irqs 0
 static const int timer_through_8259 = 0;
diff --git a/include/asm-x86/ipi.h b/include/asm-x86/ipi.h
index c1b22679751..30a692cfaff 100644
--- a/include/asm-x86/ipi.h
+++ b/include/asm-x86/ipi.h
@@ -49,6 +49,12 @@ static inline int __prepare_ICR2(unsigned int mask)
 	return SET_APIC_DEST_FIELD(mask);
 }
 
+static inline void __xapic_wait_icr_idle(void)
+{
+	while (native_apic_mem_read(APIC_ICR) & APIC_ICR_BUSY)
+		cpu_relax();
+}
+
 static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
 				       unsigned int dest)
 {
@@ -64,7 +70,7 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
 	/*
 	 * Wait for idle.
 	 */
-	apic_wait_icr_idle();
+	__xapic_wait_icr_idle();
 
 	/*
 	 * No need to touch the target chip field
@@ -74,7 +80,7 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
 	/*
 	 * Send the IPI. The write to APIC_ICR fires this off.
 	 */
-	apic_write(APIC_ICR, cfg);
+	native_apic_mem_write(APIC_ICR, cfg);
 }
 
 /*
@@ -92,13 +98,13 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector,
 	if (unlikely(vector == NMI_VECTOR))
 		safe_apic_wait_icr_idle();
 	else
-		apic_wait_icr_idle();
+		__xapic_wait_icr_idle();
 
 	/*
 	 * prepare target chip field
 	 */
 	cfg = __prepare_ICR2(mask);
-	apic_write(APIC_ICR2, cfg);
+	native_apic_mem_write(APIC_ICR2, cfg);
 
 	/*
 	 * program the ICR
@@ -108,7 +114,7 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector,
 	/*
 	 * Send the IPI. The write to APIC_ICR fires this off.
 	 */
-	apic_write(APIC_ICR, cfg);
+	native_apic_mem_write(APIC_ICR, cfg);
 }
 
 static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
diff --git a/include/asm-x86/irq_remapping.h b/include/asm-x86/irq_remapping.h
new file mode 100644
index 00000000000..78242c6ffa5
--- /dev/null
+++ b/include/asm-x86/irq_remapping.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_IRQ_REMAPPING_H
+#define _ASM_IRQ_REMAPPING_H
+
+extern int x2apic;
+
+#define IRTE_DEST(dest) ((x2apic) ? dest : dest << 8)
+
+#endif
diff --git a/include/asm-x86/mach-bigsmp/mach_apicdef.h b/include/asm-x86/mach-bigsmp/mach_apicdef.h
deleted file mode 100644
index 811935d9d49..00000000000
--- a/include/asm-x86/mach-bigsmp/mach_apicdef.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef ASM_X86__MACH_BIGSMP__MACH_APICDEF_H
-#define ASM_X86__MACH_BIGSMP__MACH_APICDEF_H
-
-#define		APIC_ID_MASK		(0xFF<<24)
-
-static inline unsigned get_apic_id(unsigned long x) 
-{ 
-	return (((x)>>24)&0xFF);
-} 
-
-#define		GET_APIC_ID(x)	get_apic_id(x)
-
-#endif /* ASM_X86__MACH_BIGSMP__MACH_APICDEF_H */
diff --git a/include/asm-x86/mach-default/mach_apic.h b/include/asm-x86/mach-default/mach_apic.h
index b615f40736b..2a330a41b3d 100644
--- a/include/asm-x86/mach-default/mach_apic.h
+++ b/include/asm-x86/mach-default/mach_apic.h
@@ -30,6 +30,8 @@ static inline cpumask_t target_cpus(void)
 #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid)
 #define phys_pkg_id	(genapic->phys_pkg_id)
 #define vector_allocation_domain    (genapic->vector_allocation_domain)
+#define read_apic_id()  (GET_APIC_ID(apic_read(APIC_ID)))
+#define send_IPI_self (genapic->send_IPI_self)
 extern void setup_apic_routing(void);
 #else
 #define INT_DELIVERY_MODE dest_LowestPrio
@@ -54,7 +56,7 @@ static inline void init_apic_ldr(void)
 
 static inline int apic_id_registered(void)
 {
-	return physid_isset(GET_APIC_ID(read_apic_id()), phys_cpu_present_map);
+	return physid_isset(read_apic_id(), phys_cpu_present_map);
 }
 
 static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
diff --git a/include/asm-x86/mach-default/mach_apicdef.h b/include/asm-x86/mach-default/mach_apicdef.h
index 936704f816d..0c2d41c41b2 100644
--- a/include/asm-x86/mach-default/mach_apicdef.h
+++ b/include/asm-x86/mach-default/mach_apicdef.h
@@ -4,9 +4,9 @@
 #include <asm/apic.h>
 
 #ifdef CONFIG_X86_64
-#define	APIC_ID_MASK		(0xFFu<<24)
-#define GET_APIC_ID(x)          (((x)>>24)&0xFFu)
-#define	SET_APIC_ID(x)		(((x)<<24))
+#define	APIC_ID_MASK		(genapic->apic_id_mask)
+#define GET_APIC_ID(x)		(genapic->get_apic_id(x))
+#define	SET_APIC_ID(x)		(genapic->set_apic_id(x))
 #else
 #define		APIC_ID_MASK		(0xF<<24)
 static inline unsigned get_apic_id(unsigned long x) 
diff --git a/include/asm-x86/mach-es7000/mach_apicdef.h b/include/asm-x86/mach-es7000/mach_apicdef.h
deleted file mode 100644
index a07e5674402..00000000000
--- a/include/asm-x86/mach-es7000/mach_apicdef.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef ASM_X86__MACH_ES7000__MACH_APICDEF_H
-#define ASM_X86__MACH_ES7000__MACH_APICDEF_H
-
-#define		APIC_ID_MASK		(0xFF<<24)
-
-static inline unsigned get_apic_id(unsigned long x) 
-{ 
-	return (((x)>>24)&0xFF);
-} 
-
-#define		GET_APIC_ID(x)	get_apic_id(x)
-
-#endif /* ASM_X86__MACH_ES7000__MACH_APICDEF_H */
diff --git a/include/asm-x86/mach-numaq/mach_mpparse.h b/include/asm-x86/mach-numaq/mach_mpparse.h
deleted file mode 100644
index 74ade184920..00000000000
--- a/include/asm-x86/mach-numaq/mach_mpparse.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef ASM_X86__MACH_NUMAQ__MACH_MPPARSE_H
-#define ASM_X86__MACH_NUMAQ__MACH_MPPARSE_H
-
-extern void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,
-				char *productid);
-
-#endif /* ASM_X86__MACH_NUMAQ__MACH_MPPARSE_H */
diff --git a/include/asm-x86/mach-summit/mach_apicdef.h b/include/asm-x86/mach-summit/mach_apicdef.h
deleted file mode 100644
index d4bc8590c4f..00000000000
--- a/include/asm-x86/mach-summit/mach_apicdef.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef ASM_X86__MACH_SUMMIT__MACH_APICDEF_H
-#define ASM_X86__MACH_SUMMIT__MACH_APICDEF_H
-
-#define		APIC_ID_MASK		(0xFF<<24)
-
-static inline unsigned get_apic_id(unsigned long x) 
-{ 
-	return (((x)>>24)&0xFF);
-} 
-
-#define		GET_APIC_ID(x)	get_apic_id(x)
-
-#endif /* ASM_X86__MACH_SUMMIT__MACH_APICDEF_H */
diff --git a/include/asm-x86/mpspec.h b/include/asm-x86/mpspec.h
index 118da365e37..be2241a818f 100644
--- a/include/asm-x86/mpspec.h
+++ b/include/asm-x86/mpspec.h
@@ -5,11 +5,12 @@
 
 #include <asm/mpspec_def.h>
 
+extern int apic_version[MAX_APICS];
+
 #ifdef CONFIG_X86_32
 #include <mach_mpspec.h>
 
 extern unsigned int def_to_bigsmp;
-extern int apic_version[MAX_APICS];
 extern u8 apicid_2_node[];
 extern int pic_mode;
 
diff --git a/include/asm-x86/msidef.h b/include/asm-x86/msidef.h
index 3139666a94f..ed919024687 100644
--- a/include/asm-x86/msidef.h
+++ b/include/asm-x86/msidef.h
@@ -48,4 +48,8 @@
 #define  MSI_ADDR_DEST_ID(dest)		(((dest) << MSI_ADDR_DEST_ID_SHIFT) & \
 					 MSI_ADDR_DEST_ID_MASK)
 
+#define MSI_ADDR_IR_EXT_INT		(1 << 4)
+#define MSI_ADDR_IR_SHV			(1 << 3)
+#define MSI_ADDR_IR_INDEX1(index)	((index & 0x8000) >> 13)
+#define MSI_ADDR_IR_INDEX2(index)	((index & 0x7fff) << 5)
 #endif /* ASM_X86__MSIDEF_H */
diff --git a/include/asm-x86/mach-numaq/mach_apic.h b/include/asm-x86/numaq/apic.h
index 7a0d39edfcf..a8344ba6ea1 100644
--- a/include/asm-x86/mach-numaq/mach_apic.h
+++ b/include/asm-x86/numaq/apic.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_NUMAQ__MACH_APIC_H
-#define ASM_X86__MACH_NUMAQ__MACH_APIC_H
+#ifndef __ASM_NUMAQ_APIC_H
+#define __ASM_NUMAQ_APIC_H
 
 #include <asm/io.h>
 #include <linux/mmzone.h>
@@ -135,4 +135,4 @@ static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 	return cpuid_apic >> index_msb;
 }
 
-#endif /* ASM_X86__MACH_NUMAQ__MACH_APIC_H */
+#endif /* __ASM_NUMAQ_APIC_H */
diff --git a/include/asm-x86/mach-numaq/mach_apicdef.h b/include/asm-x86/numaq/apicdef.h
index f870ec5f778..e012a46cc22 100644
--- a/include/asm-x86/mach-numaq/mach_apicdef.h
+++ b/include/asm-x86/numaq/apicdef.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_NUMAQ__MACH_APICDEF_H
-#define ASM_X86__MACH_NUMAQ__MACH_APICDEF_H
+#ifndef __ASM_NUMAQ_APICDEF_H
+#define __ASM_NUMAQ_APICDEF_H
 
 
 #define APIC_ID_MASK (0xF<<24)
@@ -11,4 +11,4 @@ static inline unsigned get_apic_id(unsigned long x)
 
 #define         GET_APIC_ID(x)  get_apic_id(x)
 
-#endif /* ASM_X86__MACH_NUMAQ__MACH_APICDEF_H */
+#endif
diff --git a/include/asm-x86/mach-numaq/mach_ipi.h b/include/asm-x86/numaq/ipi.h
index 1e835823f4b..935588d286c 100644
--- a/include/asm-x86/mach-numaq/mach_ipi.h
+++ b/include/asm-x86/numaq/ipi.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_NUMAQ__MACH_IPI_H
-#define ASM_X86__MACH_NUMAQ__MACH_IPI_H
+#ifndef __ASM_NUMAQ_IPI_H
+#define __ASM_NUMAQ_IPI_H
 
 void send_IPI_mask_sequence(cpumask_t, int vector);
 
@@ -22,4 +22,4 @@ static inline void send_IPI_all(int vector)
 	send_IPI_mask(cpu_online_map, vector);
 }
 
-#endif /* ASM_X86__MACH_NUMAQ__MACH_IPI_H */
+#endif /* __ASM_NUMAQ_IPI_H */
diff --git a/include/asm-x86/numaq/mpparse.h b/include/asm-x86/numaq/mpparse.h
new file mode 100644
index 00000000000..252292e077b
--- /dev/null
+++ b/include/asm-x86/numaq/mpparse.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_NUMAQ_MPPARSE_H
+#define __ASM_NUMAQ_MPPARSE_H
+
+extern void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,
+				char *productid);
+
+#endif /* __ASM_NUMAQ_MPPARSE_H */
diff --git a/include/asm-x86/mach-numaq/mach_wakecpu.h b/include/asm-x86/numaq/wakecpu.h
index 0db8cea643c..c577bda5b1c 100644
--- a/include/asm-x86/mach-numaq/mach_wakecpu.h
+++ b/include/asm-x86/numaq/wakecpu.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_NUMAQ__MACH_WAKECPU_H
-#define ASM_X86__MACH_NUMAQ__MACH_WAKECPU_H
+#ifndef __ASM_NUMAQ_WAKECPU_H
+#define __ASM_NUMAQ_WAKECPU_H
 
 /* This file copes with machines that wakeup secondary CPUs by NMIs */
 
@@ -40,4 +40,4 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
 
 #define inquire_remote_apic(apicid) {}
 
-#endif /* ASM_X86__MACH_NUMAQ__MACH_WAKECPU_H */
+#endif /* __ASM_NUMAQ_WAKECPU_H */
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 891971f57d3..d7d358a4399 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -201,12 +201,6 @@ struct pv_irq_ops {
 
 struct pv_apic_ops {
 #ifdef CONFIG_X86_LOCAL_APIC
-	/*
-	 * Direct APIC operations, principally for VMI.  Ideally
-	 * these shouldn't be in this interface.
-	 */
-	void (*apic_write)(unsigned long reg, u32 v);
-	u32 (*apic_read)(unsigned long reg);
 	void (*setup_boot_clock)(void);
 	void (*setup_secondary_clock)(void);
 
@@ -910,19 +904,6 @@ static inline void slow_down_io(void)
 }
 
 #ifdef CONFIG_X86_LOCAL_APIC
-/*
- * Basic functions accessing APICs.
- */
-static inline void apic_write(unsigned long reg, u32 v)
-{
-	PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
-}
-
-static inline u32 apic_read(unsigned long reg)
-{
-	return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
-}
-
 static inline void setup_boot_clock(void)
 {
 	PVOP_VCALL0(pv_apic_ops.setup_boot_clock);
diff --git a/include/asm-x86/setup.h b/include/asm-x86/setup.h
index 9030cb73c4d..11b6cc14b28 100644
--- a/include/asm-x86/setup.h
+++ b/include/asm-x86/setup.h
@@ -38,6 +38,7 @@ struct x86_quirks {
 	void (*mpc_oem_pci_bus)(struct mpc_config_bus *m);
 	void (*smp_read_mpc_oem)(struct mp_config_oemtable *oemtable,
                                     unsigned short oemsize);
+	int (*setup_ioapic_ids)(void);
 };
 
 extern struct x86_quirks *x86_quirks;
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index 04f84f4e2c8..29324c10334 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -167,30 +167,33 @@ extern int safe_smp_processor_id(void);
 
 #ifdef CONFIG_X86_LOCAL_APIC
 
+#ifndef CONFIG_X86_64
 static inline int logical_smp_processor_id(void)
 {
 	/* we don't want to mark this access volatile - bad code generation */
 	return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR));
 }
 
-#ifndef CONFIG_X86_64
+#include <mach_apicdef.h>
 static inline unsigned int read_apic_id(void)
 {
-	return *(u32 *)(APIC_BASE + APIC_ID);
+	unsigned int reg;
+
+	reg = *(u32 *)(APIC_BASE + APIC_ID);
+
+	return GET_APIC_ID(reg);
 }
-#else
-extern unsigned int read_apic_id(void);
 #endif
 
 
-# ifdef APIC_DEFINITION
+# if defined(APIC_DEFINITION) || defined(CONFIG_X86_64)
 extern int hard_smp_processor_id(void);
 # else
-#  include <mach_apicdef.h>
+#include <mach_apicdef.h>
 static inline int hard_smp_processor_id(void)
 {
 	/* we don't want to mark this access volatile - bad code generation */
-	return GET_APIC_ID(read_apic_id());
+	return read_apic_id();
 }
 # endif /* APIC_DEFINITION */
 
diff --git a/include/asm-x86/mach-summit/mach_apic.h b/include/asm-x86/summit/apic.h
index 7a66758d701..c5b2e4b1035 100644
--- a/include/asm-x86/mach-summit/mach_apic.h
+++ b/include/asm-x86/summit/apic.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_SUMMIT__MACH_APIC_H
-#define ASM_X86__MACH_SUMMIT__MACH_APIC_H
+#ifndef __ASM_SUMMIT_APIC_H
+#define __ASM_SUMMIT_APIC_H
 
 #include <asm/smp.h>
 
@@ -21,7 +21,7 @@ static inline cpumask_t target_cpus(void)
 	 * Just start on cpu 0.  IRQ balancing will spread load
 	 */
 	return cpumask_of_cpu(0);
-} 
+}
 #define TARGET_CPUS	(target_cpus())
 
 #define INT_DELIVERY_MODE (dest_LowestPrio)
@@ -30,10 +30,10 @@ static inline cpumask_t target_cpus(void)
 static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
 {
 	return 0;
-} 
+}
 
 /* we don't use the phys_cpu_present_map to indicate apicid presence */
-static inline unsigned long check_apicid_present(int bit) 
+static inline unsigned long check_apicid_present(int bit)
 {
 	return 1;
 }
@@ -122,7 +122,7 @@ static inline physid_mask_t ioapic_phys_id_map(physid_mask_t phys_id_map)
 
 static inline physid_mask_t apicid_to_cpu_present(int apicid)
 {
-	return physid_mask_of_physid(apicid);
+	return physid_mask_of_physid(0);
 }
 
 static inline void setup_portio_remap(void)
@@ -143,22 +143,22 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
 	int num_bits_set;
 	int cpus_found = 0;
 	int cpu;
-	int apicid;	
+	int apicid;
 
 	num_bits_set = cpus_weight(cpumask);
 	/* Return id to all */
 	if (num_bits_set == NR_CPUS)
 		return (int) 0xFF;
-	/* 
-	 * The cpus in the mask must all be on the apic cluster.  If are not 
-	 * on the same apicid cluster return default value of TARGET_CPUS. 
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of TARGET_CPUS.
 	 */
 	cpu = first_cpu(cpumask);
 	apicid = cpu_to_logical_apicid(cpu);
 	while (cpus_found < num_bits_set) {
 		if (cpu_isset(cpu, cpumask)) {
 			int new_apicid = cpu_to_logical_apicid(cpu);
-			if (apicid_cluster(apicid) != 
+			if (apicid_cluster(apicid) !=
 					apicid_cluster(new_apicid)){
 				printk ("%s: Not a valid mask!\n",__FUNCTION__);
 				return 0xFF;
@@ -182,4 +182,4 @@ static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 	return hard_smp_processor_id() >> index_msb;
 }
 
-#endif /* ASM_X86__MACH_SUMMIT__MACH_APIC_H */
+#endif /* __ASM_SUMMIT_APIC_H */
diff --git a/include/asm-x86/summit/apicdef.h b/include/asm-x86/summit/apicdef.h
new file mode 100644
index 00000000000..f3fbca1f61c
--- /dev/null
+++ b/include/asm-x86/summit/apicdef.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_SUMMIT_APICDEF_H
+#define __ASM_SUMMIT_APICDEF_H
+
+#define		APIC_ID_MASK		(0xFF<<24)
+
+static inline unsigned get_apic_id(unsigned long x)
+{
+	return (x>>24)&0xFF;
+}
+
+#define		GET_APIC_ID(x)	get_apic_id(x)
+
+#endif
diff --git a/include/asm-x86/mach-bigsmp/mach_ipi.h b/include/asm-x86/summit/ipi.h
index b1b0f966a00..53bd1e7bd7b 100644
--- a/include/asm-x86/mach-bigsmp/mach_ipi.h
+++ b/include/asm-x86/summit/ipi.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_BIGSMP__MACH_IPI_H
-#define ASM_X86__MACH_BIGSMP__MACH_IPI_H
+#ifndef __ASM_SUMMIT_IPI_H
+#define __ASM_SUMMIT_IPI_H
 
 void send_IPI_mask_sequence(cpumask_t mask, int vector);
 
@@ -22,4 +22,4 @@ static inline void send_IPI_all(int vector)
 	send_IPI_mask(cpu_online_map, vector);
 }
 
-#endif /* ASM_X86__MACH_BIGSMP__MACH_IPI_H */
+#endif /* __ASM_SUMMIT_IPI_H */
diff --git a/include/asm-x86/mach-summit/irq_vectors_limits.h b/include/asm-x86/summit/irq_vectors_limits.h
index 22f376ad68e..890ce3f5e09 100644
--- a/include/asm-x86/mach-summit/irq_vectors_limits.h
+++ b/include/asm-x86/summit/irq_vectors_limits.h
@@ -1,5 +1,5 @@
-#ifndef ASM_X86__MACH_SUMMIT__IRQ_VECTORS_LIMITS_H
-#define ASM_X86__MACH_SUMMIT__IRQ_VECTORS_LIMITS_H
+#ifndef _ASM_IRQ_VECTORS_LIMITS_H
+#define _ASM_IRQ_VECTORS_LIMITS_H
 
 /*
  * For Summit or generic (i.e. installer) kernels, we have lots of I/O APICs,
@@ -11,4 +11,4 @@
 #define NR_IRQS	224
 #define NR_IRQ_VECTORS	1024
 
-#endif /* ASM_X86__MACH_SUMMIT__IRQ_VECTORS_LIMITS_H */
+#endif /* _ASM_IRQ_VECTORS_LIMITS_H */
diff --git a/include/asm-x86/mach-summit/mach_mpparse.h b/include/asm-x86/summit/mpparse.h
index 92396f28772..013ce6fab2d 100644
--- a/include/asm-x86/mach-summit/mach_mpparse.h
+++ b/include/asm-x86/summit/mpparse.h
@@ -1,7 +1,6 @@
-#ifndef ASM_X86__MACH_SUMMIT__MACH_MPPARSE_H
-#define ASM_X86__MACH_SUMMIT__MACH_MPPARSE_H
+#ifndef __ASM_SUMMIT_MPPARSE_H
+#define __ASM_SUMMIT_MPPARSE_H
 
-#include <mach_apic.h>
 #include <asm/tsc.h>
 
 extern int use_cyclone;
@@ -12,11 +11,11 @@ extern void setup_summit(void);
 #define setup_summit()	{}
 #endif
 
-static inline int mps_oem_check(struct mp_config_table *mpc, char *oem, 
+static inline int mps_oem_check(struct mp_config_table *mpc, char *oem,
 		char *productid)
 {
-	if (!strncmp(oem, "IBM ENSW", 8) && 
-			(!strncmp(productid, "VIGIL SMP", 9) 
+	if (!strncmp(oem, "IBM ENSW", 8) &&
+			(!strncmp(productid, "VIGIL SMP", 9)
 			 || !strncmp(productid, "EXA", 3)
 			 || !strncmp(productid, "RUTHLESS SMP", 12))){
 		mark_tsc_unstable("Summit based system");
@@ -107,4 +106,4 @@ static inline int is_WPEG(struct rio_detail *rio){
 		rio->type == LookOutAWPEG || rio->type == LookOutBWPEG);
 }
 
-#endif /* ASM_X86__MACH_SUMMIT__MACH_MPPARSE_H */
+#endif /* __ASM_SUMMIT_MPPARSE_H */
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 56c73b84755..c360c558e59 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -25,9 +25,99 @@
 #include <linux/types.h>
 #include <linux/msi.h>
 
-#ifdef CONFIG_DMAR
+#if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP)
 struct intel_iommu;
 
+struct dmar_drhd_unit {
+	struct list_head list;		/* list of drhd units	*/
+	struct  acpi_dmar_header *hdr;	/* ACPI header		*/
+	u64	reg_base_addr;		/* register base address*/
+	struct	pci_dev **devices; 	/* target device array	*/
+	int	devices_cnt;		/* target device count	*/
+	u8	ignored:1; 		/* ignore drhd		*/
+	u8	include_all:1;
+	struct intel_iommu *iommu;
+};
+
+extern struct list_head dmar_drhd_units;
+
+#define for_each_drhd_unit(drhd) \
+	list_for_each_entry(drhd, &dmar_drhd_units, list)
+
+extern int dmar_table_init(void);
+extern int early_dmar_detect(void);
+extern int dmar_dev_scope_init(void);
+
+/* Intel IOMMU detection */
+extern void detect_intel_iommu(void);
+
+
+extern int parse_ioapics_under_ir(void);
+extern int alloc_iommu(struct dmar_drhd_unit *);
+#else
+static inline void detect_intel_iommu(void)
+{
+	return;
+}
+
+static inline int dmar_table_init(void)
+{
+	return -ENODEV;
+}
+#endif /* !CONFIG_DMAR && !CONFIG_INTR_REMAP */
+
+#ifdef CONFIG_INTR_REMAP
+extern int intr_remapping_enabled;
+extern int enable_intr_remapping(int);
+
+struct irte {
+	union {
+		struct {
+			__u64	present 	: 1,
+				fpd		: 1,
+				dst_mode	: 1,
+				redir_hint	: 1,
+				trigger_mode	: 1,
+				dlvry_mode	: 3,
+				avail		: 4,
+				__reserved_1	: 4,
+				vector		: 8,
+				__reserved_2	: 8,
+				dest_id		: 32;
+		};
+		__u64 low;
+	};
+
+	union {
+		struct {
+			__u64	sid		: 16,
+				sq		: 2,
+				svt		: 2,
+				__reserved_3	: 44;
+		};
+		__u64 high;
+	};
+};
+extern int get_irte(int irq, struct irte *entry);
+extern int modify_irte(int irq, struct irte *irte_modified);
+extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
+extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
+   			u16 sub_handle);
+extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
+extern int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index);
+extern int flush_irte(int irq);
+extern int free_irte(int irq);
+
+extern int irq_remapped(int irq);
+extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
+extern struct intel_iommu *map_ioapic_to_ir(int apic);
+#else
+#define irq_remapped(irq)		(0)
+#define enable_intr_remapping(mode)	(-1)
+#define intr_remapping_enabled		(0)
+#endif
+
+#ifdef CONFIG_DMAR
 extern const char *dmar_get_fault_reason(u8 fault_reason);
 
 /* Can't use the common MSI interrupt functions
@@ -40,47 +130,30 @@ extern void dmar_msi_write(int irq, struct msi_msg *msg);
 extern int dmar_set_interrupt(struct intel_iommu *iommu);
 extern int arch_setup_dmar_msi(unsigned int irq);
 
-/* Intel IOMMU detection and initialization functions */
-extern void detect_intel_iommu(void);
-extern int intel_iommu_init(void);
-
-extern int dmar_table_init(void);
-extern int early_dmar_detect(void);
-
-extern struct list_head dmar_drhd_units;
+extern int iommu_detected, no_iommu;
 extern struct list_head dmar_rmrr_units;
-
-struct dmar_drhd_unit {
-	struct list_head list;		/* list of drhd units	*/
-	u64	reg_base_addr;		/* register base address*/
-	struct	pci_dev **devices; 	/* target device array	*/
-	int	devices_cnt;		/* target device count	*/
-	u8	ignored:1; 		/* ignore drhd		*/
-	u8	include_all:1;
-	struct intel_iommu *iommu;
-};
-
 struct dmar_rmrr_unit {
 	struct list_head list;		/* list of rmrr units	*/
+	struct acpi_dmar_header *hdr;	/* ACPI header		*/
 	u64	base_address;		/* reserved base address*/
 	u64	end_address;		/* reserved end address */
 	struct pci_dev **devices;	/* target devices */
 	int	devices_cnt;		/* target device count */
 };
 
-#define for_each_drhd_unit(drhd) \
-	list_for_each_entry(drhd, &dmar_drhd_units, list)
 #define for_each_rmrr_units(rmrr) \
 	list_for_each_entry(rmrr, &dmar_rmrr_units, list)
+/* Intel DMAR  initialization functions */
+extern int intel_iommu_init(void);
+extern int dmar_disabled;
 #else
-static inline void detect_intel_iommu(void)
-{
-	return;
-}
 static inline int intel_iommu_init(void)
 {
+#ifdef CONFIG_INTR_REMAP
+	return dmar_dev_scope_init();
+#else
 	return -ENODEV;
+#endif
 }
-
 #endif /* !CONFIG_DMAR */
 #endif /* __DMAR_H__ */
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 8ccb462ea42..8d9411bc60f 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -62,6 +62,7 @@ typedef	void (*irq_flow_handler_t)(unsigned int irq,
 #define IRQ_MOVE_PENDING	0x00200000	/* need to re-target IRQ destination */
 #define IRQ_NO_BALANCING	0x00400000	/* IRQ is excluded from balancing */
 #define IRQ_SPURIOUS_DISABLED	0x00800000	/* IRQ was disabled by the spurious trap */
+#define IRQ_MOVE_PCNTXT	0x01000000	/* IRQ migration from process context */
 
 #ifdef CONFIG_IRQ_PER_CPU
 # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)