Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6

* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (156 commits)
  [PATCH] x86-64: Export smp_call_function_single
  [PATCH] i386: Clean up smp_tune_scheduling()
  [PATCH] unwinder: move .eh_frame to RODATA
  [PATCH] unwinder: fully support linker generated .eh_frame_hdr section
  [PATCH] x86-64: don't use set_irq_regs()
  [PATCH] x86-64: check vector in setup_ioapic_dest to verify if need setup_IO_APIC_irq
  [PATCH] x86-64: Make ix86 default to HIGHMEM4G instead of NOHIGHMEM
  [PATCH] i386: replace kmalloc+memset with kzalloc
  [PATCH] x86-64: remove remaining pc98 code
  [PATCH] x86-64: remove unused variable
  [PATCH] x86-64: Fix constraints in atomic_add_return()
  [PATCH] x86-64: fix asm constraints in i386 atomic_add_return
  [PATCH] x86-64: Correct documentation for bzImage protocol v2.05
  [PATCH] x86-64: replace kmalloc+memset with kzalloc in MTRR code
  [PATCH] x86-64: Fix numaq build error
  [PATCH] x86-64: include/asm-x86_64/cpufeature.h isn't a userspace header
  [PATCH] unwinder: Add debugging output to the Dwarf2 unwinder
  [PATCH] x86-64: Clarify error message in GART code
  [PATCH] x86-64: Fix interrupt race in idle callback (3rd try)
  [PATCH] x86-64: Remove unwind stack pointer alignment forcing again
  ...

Fixed conflict in include/linux/uaccess.h manually

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

45 files changed, 1114 insertions, 272 deletions

diff --git a/include/asm-i386/alternative.h b/include/asm-i386/alternative.h
index b01a7ec409c..b8fa9557c53 100644
--- a/include/asm-i386/alternative.h
+++ b/include/asm-i386/alternative.h
@@ -4,7 +4,7 @@
 #ifdef __KERNEL__
 
 #include <asm/types.h>
-
+#include <linux/stddef.h>
 #include <linux/types.h>
 
 struct alt_instr {
@@ -118,4 +118,15 @@ static inline void alternatives_smp_switch(int smp) {}
 #define LOCK_PREFIX ""
 #endif
 
+struct paravirt_patch;
+#ifdef CONFIG_PARAVIRT
+void apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end);
+#else
+static inline void
+apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end)
+{}
+#define __start_parainstructions NULL
+#define __stop_parainstructions NULL
+#endif
+
 #endif /* _I386_ALTERNATIVE_H */
diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h
index b9529578fc3..41a44319905 100644
--- a/include/asm-i386/apic.h
+++ b/include/asm-i386/apic.h
@@ -37,18 +37,27 @@ extern void generic_apic_probe(void);
 /*
  * Basic functions accessing APICs.
  */
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define apic_write native_apic_write
+#define apic_write_atomic native_apic_write_atomic
+#define apic_read native_apic_read
+#endif
 
-static __inline void apic_write(unsigned long reg, unsigned long v)
+static __inline fastcall void native_apic_write(unsigned long reg,
+						unsigned long v)
 {
 	*((volatile unsigned long *)(APIC_BASE+reg)) = v;
 }
 
-static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
+static __inline fastcall void native_apic_write_atomic(unsigned long reg,
+						       unsigned long v)
 {
 	xchg((volatile unsigned long *)(APIC_BASE+reg), v);
 }
 
-static __inline unsigned long apic_read(unsigned long reg)
+static __inline fastcall unsigned long native_apic_read(unsigned long reg)
 {
 	return *((volatile unsigned long *)(APIC_BASE+reg));
 }
diff --git a/include/asm-i386/atomic.h b/include/asm-i386/atomic.h
index a6c024e2506..c57441bb290 100644
--- a/include/asm-i386/atomic.h
+++ b/include/asm-i386/atomic.h
@@ -187,9 +187,9 @@ static __inline__ int atomic_add_return(int i, atomic_t *v)
 	/* Modern 486+ processor */
 	__i = i;
 	__asm__ __volatile__(
-		LOCK_PREFIX "xaddl %0, %1;"
-		:"=r"(i)
-		:"m"(v->counter), "0"(i));
+		LOCK_PREFIX "xaddl %0, %1"
+		:"+r" (i), "+m" (v->counter)
+		: : "memory");
 	return i + __i;
 
 #ifdef CONFIG_M386
diff --git a/include/asm-i386/boot.h b/include/asm-i386/boot.h
index 96b228e6e79..8ce79a6fa89 100644
--- a/include/asm-i386/boot.h
+++ b/include/asm-i386/boot.h
@@ -12,4 +12,8 @@
 #define EXTENDED_VGA	0xfffe		/* 80x50 mode */
 #define ASK_VGA		0xfffd		/* ask for it at bootup */
 
-#endif
+/* Physical address where kenrel should be loaded. */
+#define LOAD_PHYSICAL_ADDR ((0x100000 + CONFIG_PHYSICAL_ALIGN - 1) \
+				& ~(CONFIG_PHYSICAL_ALIGN - 1))
+
+#endif /* _LINUX_BOOT_H */
diff --git a/include/asm-i386/bugs.h b/include/asm-i386/bugs.h
index 592ffeeda45..38f1aebbbdb 100644
--- a/include/asm-i386/bugs.h
+++ b/include/asm-i386/bugs.h
@@ -21,6 +21,7 @@
 #include <asm/processor.h>
 #include <asm/i387.h>
 #include <asm/msr.h>
+#include <asm/paravirt.h>
 
 static int __init no_halt(char *s)
 {
@@ -91,6 +92,9 @@ static void __init check_fpu(void)
 
 static void __init check_hlt(void)
 {
+	if (paravirt_enabled())
+		return;
+
 	printk(KERN_INFO "Checking 'hlt' instruction... ");
 	if (!boot_cpu_data.hlt_works_ok) {
 		printk("disabled\n");
diff --git a/include/asm-i386/cpu.h b/include/asm-i386/cpu.h
index b1bc7b1b64b..9d914e1e4aa 100644
--- a/include/asm-i386/cpu.h
+++ b/include/asm-i386/cpu.h
@@ -13,6 +13,9 @@ struct i386_cpu {
 extern int arch_register_cpu(int num);
 #ifdef CONFIG_HOTPLUG_CPU
 extern void arch_unregister_cpu(int);
+extern int enable_cpu_hotplug;
+#else
+#define enable_cpu_hotplug	0
 #endif
 
 DECLARE_PER_CPU(int, cpu_state);
diff --git a/include/asm-i386/cpufeature.h b/include/asm-i386/cpufeature.h
index d314ebb3d59..3f92b94e0d7 100644
--- a/include/asm-i386/cpufeature.h
+++ b/include/asm-i386/cpufeature.h
@@ -31,7 +31,7 @@
 #define X86_FEATURE_PSE36	(0*32+17) /* 36-bit PSEs */
 #define X86_FEATURE_PN		(0*32+18) /* Processor serial number */
 #define X86_FEATURE_CLFLSH	(0*32+19) /* Supports the CLFLUSH instruction */
-#define X86_FEATURE_DTES	(0*32+21) /* Debug Trace Store */
+#define X86_FEATURE_DS		(0*32+21) /* Debug Store */
 #define X86_FEATURE_ACPI	(0*32+22) /* ACPI via MSR */
 #define X86_FEATURE_MMX		(0*32+23) /* Multimedia Extensions */
 #define X86_FEATURE_FXSR	(0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
@@ -73,6 +73,8 @@
 #define X86_FEATURE_UP		(3*32+ 9) /* smp kernel running on up */
 #define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */
 #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
+#define X86_FEATURE_PEBS	(3*32+12)  /* Precise-Event Based Sampling */
+#define X86_FEATURE_BTS		(3*32+13)  /* Branch Trace Store */
 
 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
 #define X86_FEATURE_XMM3	(4*32+ 0) /* Streaming SIMD Extensions-3 */
@@ -134,6 +136,10 @@
 #define cpu_has_phe_enabled	boot_cpu_has(X86_FEATURE_PHE_EN)
 #define cpu_has_pmm		boot_cpu_has(X86_FEATURE_PMM)
 #define cpu_has_pmm_enabled	boot_cpu_has(X86_FEATURE_PMM_EN)
+#define cpu_has_ds		boot_cpu_has(X86_FEATURE_DS)
+#define cpu_has_pebs 		boot_cpu_has(X86_FEATURE_PEBS)
+#define cpu_has_clflush		boot_cpu_has(X86_FEATURE_CLFLSH)
+#define cpu_has_bts 		boot_cpu_has(X86_FEATURE_BTS)
 
 #endif /* __ASM_I386_CPUFEATURE_H */
 
diff --git a/include/asm-i386/current.h b/include/asm-i386/current.h
index 3cbbecd7901..5252ee0f6d7 100644
--- a/include/asm-i386/current.h
+++ b/include/asm-i386/current.h
@@ -1,13 +1,14 @@
 #ifndef _I386_CURRENT_H
 #define _I386_CURRENT_H
 
-#include <linux/thread_info.h>
+#include <asm/pda.h>
+#include <linux/compiler.h>
 
 struct task_struct;
 
-static __always_inline struct task_struct * get_current(void)
+static __always_inline struct task_struct *get_current(void)
 {
-	return current_thread_info()->task;
+	return read_pda(pcurrent);
 }
  
 #define current get_current()
diff --git a/include/asm-i386/delay.h b/include/asm-i386/delay.h
index b1c7650dc7b..32d6678d0bb 100644
--- a/include/asm-i386/delay.h
+++ b/include/asm-i386/delay.h
@@ -7,6 +7,7 @@
  * Delay routines calling functions in arch/i386/lib/delay.c
  */
  
+/* Undefined functions to get compile-time errors */
 extern void __bad_udelay(void);
 extern void __bad_ndelay(void);
 
@@ -15,13 +16,23 @@ extern void __ndelay(unsigned long nsecs);
 extern void __const_udelay(unsigned long usecs);
 extern void __delay(unsigned long loops);
 
+#if defined(CONFIG_PARAVIRT) && !defined(USE_REAL_TIME_DELAY)
+#define udelay(n) paravirt_ops.const_udelay((n) * 0x10c7ul)
+
+#define ndelay(n) paravirt_ops.const_udelay((n) * 5ul)
+
+#else /* !PARAVIRT || USE_REAL_TIME_DELAY */
+
+/* 0x10c7 is 2**32 / 1000000 (rounded up) */
 #define udelay(n) (__builtin_constant_p(n) ? \
 	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
 	__udelay(n))
-	
+
+/* 0x5 is 2**32 / 1000000000 (rounded up) */
 #define ndelay(n) (__builtin_constant_p(n) ? \
 	((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
 	__ndelay(n))
+#endif
 
 void use_tsc_delay(void);
 
diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h
index 5874ef119ff..f398cc45644 100644
--- a/include/asm-i386/desc.h
+++ b/include/asm-i386/desc.h
@@ -4,8 +4,6 @@
 #include <asm/ldt.h>
 #include <asm/segment.h>
 
-#define CPU_16BIT_STACK_SIZE 1024
-
 #ifndef __ASSEMBLY__
 
 #include <linux/preempt.h>
@@ -16,8 +14,6 @@
 
 extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
 
-DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
-
 struct Xgt_desc_struct {
 	unsigned short size;
 	unsigned long address __attribute__((packed));
@@ -33,11 +29,6 @@ static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
 	return (struct desc_struct *)per_cpu(cpu_gdt_descr, cpu).address;
 }
 
-/*
- * This is the ldt that every process will get unless we need
- * something other than this.
- */
-extern struct desc_struct default_ldt[];
 extern struct desc_struct idt_table[];
 extern void set_intr_gate(unsigned int irq, void * addr);
 
@@ -64,8 +55,10 @@ static inline void pack_gate(__u32 *a, __u32 *b,
 #define DESCTYPE_DPL3	0x60	/* DPL-3 */
 #define DESCTYPE_S	0x10	/* !system */
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
 #define load_TR_desc() __asm__ __volatile__("ltr %w0"::"q" (GDT_ENTRY_TSS*8))
-#define load_LDT_desc() __asm__ __volatile__("lldt %w0"::"q" (GDT_ENTRY_LDT*8))
 
 #define load_gdt(dtr) __asm__ __volatile("lgdt %0"::"m" (*dtr))
 #define load_idt(dtr) __asm__ __volatile("lidt %0"::"m" (*dtr))
@@ -88,6 +81,10 @@ static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
 #undef C
 }
 
+#define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
+#define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
+#define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
+
 static inline void write_dt_entry(void *dt, int entry, __u32 entry_a, __u32 entry_b)
 {
 	__u32 *lp = (__u32 *)((char *)dt + entry*8);
@@ -95,9 +92,25 @@ static inline void write_dt_entry(void *dt, int entry, __u32 entry_a, __u32 entr
 	*(lp+1) = entry_b;
 }
 
-#define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
+#define set_ldt native_set_ldt
+#endif /* CONFIG_PARAVIRT */
+
+static inline fastcall void native_set_ldt(const void *addr,
+					   unsigned int entries)
+{
+	if (likely(entries == 0))
+		__asm__ __volatile__("lldt %w0"::"q" (0));
+	else {
+		unsigned cpu = smp_processor_id();
+		__u32 a, b;
+
+		pack_descriptor(&a, &b, (unsigned long)addr,
+				entries * sizeof(struct desc_struct) - 1,
+				DESCTYPE_LDT, 0);
+		write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT, a, b);
+		__asm__ __volatile__("lldt %w0"::"q" (GDT_ENTRY_LDT*8));
+	}
+}
 
 static inline void _set_gate(int gate, unsigned int type, void *addr, unsigned short seg)
 {
@@ -115,14 +128,6 @@ static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, const vo
 	write_gdt_entry(get_cpu_gdt_table(cpu), entry, a, b);
 }
 
-static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int entries)
-{
-	__u32 a, b;
-	pack_descriptor(&a, &b, (unsigned long)addr,
-			entries * sizeof(struct desc_struct) - 1,
-			DESCTYPE_LDT, 0);
-	write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT, a, b);
-}
 
 #define set_tss_desc(cpu,addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
 
@@ -153,35 +158,22 @@ static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int entri
 
 static inline void clear_LDT(void)
 {
-	int cpu = get_cpu();
-
-	set_ldt_desc(cpu, &default_ldt[0], 5);
-	load_LDT_desc();
-	put_cpu();
+	set_ldt(NULL, 0);
 }
 
 /*
  * load one particular LDT into the current CPU
  */
-static inline void load_LDT_nolock(mm_context_t *pc, int cpu)
+static inline void load_LDT_nolock(mm_context_t *pc)
 {
-	void *segments = pc->ldt;
-	int count = pc->size;
-
-	if (likely(!count)) {
-		segments = &default_ldt[0];
-		count = 5;
-	}
-		
-	set_ldt_desc(cpu, segments, count);
-	load_LDT_desc();
+	set_ldt(pc->ldt, pc->size);
 }
 
 static inline void load_LDT(mm_context_t *pc)
 {
-	int cpu = get_cpu();
-	load_LDT_nolock(pc, cpu);
-	put_cpu();
+	preempt_disable();
+	load_LDT_nolock(pc);
+	preempt_enable();
 }
 
 static inline unsigned long get_desc_base(unsigned long *desc)
@@ -193,6 +185,29 @@ static inline unsigned long get_desc_base(unsigned long *desc)
 	return base;
 }
 
+#else /* __ASSEMBLY__ */
+
+/*
+ * GET_DESC_BASE reads the descriptor base of the specified segment.
+ *
+ * Args:
+ *    idx - descriptor index
+ *    gdt - GDT pointer
+ *    base - 32bit register to which the base will be written
+ *    lo_w - lo word of the "base" register
+ *    lo_b - lo byte of the "base" register
+ *    hi_b - hi byte of the low word of the "base" register
+ *
+ * Example:
+ *    GET_DESC_BASE(GDT_ENTRY_ESPFIX_SS, %ebx, %eax, %ax, %al, %ah)
+ *    Will read the base address of GDT_ENTRY_ESPFIX_SS and put it into %eax.
+ */
+#define GET_DESC_BASE(idx, gdt, base, lo_w, lo_b, hi_b) \
+	movb idx*8+4(gdt), lo_b; \
+	movb idx*8+7(gdt), hi_b; \
+	shll $16, base; \
+	movw idx*8+2(gdt), lo_w;
+
 #endif /* !__ASSEMBLY__ */
 
 #endif
diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h
index f7514fb6e8e..395077aba58 100644
--- a/include/asm-i386/e820.h
+++ b/include/asm-i386/e820.h
@@ -38,6 +38,11 @@ extern struct e820map e820;
 
 extern int e820_all_mapped(unsigned long start, unsigned long end,
 			   unsigned type);
+extern void find_max_pfn(void);
+extern void register_bootmem_low_pages(unsigned long max_low_pfn);
+extern void register_memory(void);
+extern void limit_regions(unsigned long long size);
+extern void print_memory_map(char *who);
 
 #endif/*!__ASSEMBLY__*/
 
diff --git a/include/asm-i386/elf.h b/include/asm-i386/elf.h
index 3a05436f31c..45d21a0c95b 100644
--- a/include/asm-i386/elf.h
+++ b/include/asm-i386/elf.h
@@ -91,7 +91,7 @@ typedef struct user_fxsr_struct elf_fpxregset_t;
 	pr_reg[7] = regs->xds;				\
 	pr_reg[8] = regs->xes;				\
 	savesegment(fs,pr_reg[9]);			\
-	savesegment(gs,pr_reg[10]);			\
+	pr_reg[10] = regs->xgs;				\
 	pr_reg[11] = regs->orig_eax;			\
 	pr_reg[12] = regs->eip;				\
 	pr_reg[13] = regs->xcs;				\
diff --git a/include/asm-i386/genapic.h b/include/asm-i386/genapic.h
index 8ffbb0f0745..fd2be593b06 100644
--- a/include/asm-i386/genapic.h
+++ b/include/asm-i386/genapic.h
@@ -122,6 +122,6 @@ struct genapic {
 	APICFUNC(phys_pkg_id) \
 	}
 
-extern struct genapic *genapic;
+extern struct genapic *genapic, apic_default;
 
 #endif
diff --git a/include/asm-i386/i387.h b/include/asm-i386/i387.h
index bc1d6edae1e..434936c732d 100644
--- a/include/asm-i386/i387.h
+++ b/include/asm-i386/i387.h
@@ -76,7 +76,9 @@ static inline void __save_init_fpu( struct task_struct *tsk )
 
 #define __unlazy_fpu( tsk ) do { \
 	if (task_thread_info(tsk)->status & TS_USEDFPU) \
-		save_init_fpu( tsk ); \
+		save_init_fpu( tsk ); 			\
+	else						\
+		tsk->fpu_counter = 0;			\
 } while (0)
 
 #define __clear_fpu( tsk )					\
@@ -118,6 +120,7 @@ static inline void save_init_fpu( struct task_struct *tsk )
 extern unsigned short get_fpu_cwd( struct task_struct *tsk );
 extern unsigned short get_fpu_swd( struct task_struct *tsk );
 extern unsigned short get_fpu_mxcsr( struct task_struct *tsk );
+extern asmlinkage void math_state_restore(void);
 
 /*
  * Signal frame handlers...
diff --git a/include/asm-i386/io.h b/include/asm-i386/io.h
index 68df0dc3ab8..86ff5e83be2 100644
--- a/include/asm-i386/io.h
+++ b/include/asm-i386/io.h
@@ -256,11 +256,11 @@ static inline void flush_write_buffers(void)
 
 #endif /* __KERNEL__ */
 
-#ifdef SLOW_IO_BY_JUMPING
-#define __SLOW_DOWN_IO "jmp 1f; 1: jmp 1f; 1:"
+#if defined(CONFIG_PARAVIRT)
+#include <asm/paravirt.h>
 #else
+
 #define __SLOW_DOWN_IO "outb %%al,$0x80;"
-#endif
 
 static inline void slow_down_io(void) {
 	__asm__ __volatile__(
@@ -271,6 +271,8 @@ static inline void slow_down_io(void) {
 		: : );
 }
 
+#endif
+
 #ifdef CONFIG_X86_NUMAQ
 extern void *xquad_portio;    /* Where the IO area was mapped */
 #define XQUAD_PORT_ADDR(port, quad) (xquad_portio + (XQUAD_PORTIO_QUAD*quad) + port)
diff --git a/include/asm-i386/irq.h b/include/asm-i386/irq.h
index 331726b4112..11761cdaae1 100644
--- a/include/asm-i386/irq.h
+++ b/include/asm-i386/irq.h
@@ -37,8 +37,13 @@ static __inline__ int irq_canonicalize(int irq)
 extern int irqbalance_disable(char *str);
 #endif
 
+extern void quirk_intel_irqbalance(void);
+
 #ifdef CONFIG_HOTPLUG_CPU
 extern void fixup_irqs(cpumask_t map);
 #endif
 
+void init_IRQ(void);
+void __init native_init_IRQ(void);
+
 #endif /* _ASM_IRQ_H */
diff --git a/include/asm-i386/irq_regs.h b/include/asm-i386/irq_regs.h
index 3dd9c0b7027..a1b3f7f594a 100644
--- a/include/asm-i386/irq_regs.h
+++ b/include/asm-i386/irq_regs.h
@@ -1 +1,27 @@
-#include <asm-generic/irq_regs.h>
+/*
+ * Per-cpu current frame pointer - the location of the last exception frame on
+ * the stack, stored in the PDA.
+ *
+ * Jeremy Fitzhardinge <jeremy@goop.org>
+ */
+#ifndef _ASM_I386_IRQ_REGS_H
+#define _ASM_I386_IRQ_REGS_H
+
+#include <asm/pda.h>
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+	return read_pda(irq_regs);
+}
+
+static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
+{
+	struct pt_regs *old_regs;
+
+	old_regs = read_pda(irq_regs);
+	write_pda(irq_regs, new_regs);
+
+	return old_regs;
+}
+
+#endif /* _ASM_I386_IRQ_REGS_H */
diff --git a/include/asm-i386/irqflags.h b/include/asm-i386/irqflags.h
index e1bdb97c07f..17b18cf4fe9 100644
--- a/include/asm-i386/irqflags.h
+++ b/include/asm-i386/irqflags.h
@@ -10,6 +10,9 @@
 #ifndef _ASM_IRQFLAGS_H
 #define _ASM_IRQFLAGS_H
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
 #ifndef __ASSEMBLY__
 
 static inline unsigned long __raw_local_save_flags(void)
@@ -25,9 +28,6 @@ static inline unsigned long __raw_local_save_flags(void)
 	return flags;
 }
 
-#define raw_local_save_flags(flags) \
-		do { (flags) = __raw_local_save_flags(); } while (0)
-
 static inline void raw_local_irq_restore(unsigned long flags)
 {
 	__asm__ __volatile__(
@@ -66,18 +66,6 @@ static inline void halt(void)
 	__asm__ __volatile__("hlt": : :"memory");
 }
 
-static inline int raw_irqs_disabled_flags(unsigned long flags)
-{
-	return !(flags & (1 << 9));
-}
-
-static inline int raw_irqs_disabled(void)
-{
-	unsigned long flags = __raw_local_save_flags();
-
-	return raw_irqs_disabled_flags(flags);
-}
-
 /*
  * For spinlocks, etc:
  */
@@ -90,9 +78,33 @@ static inline unsigned long __raw_local_irq_save(void)
 	return flags;
 }
 
+#else
+#define DISABLE_INTERRUPTS(clobbers)	cli
+#define ENABLE_INTERRUPTS(clobbers)	sti
+#define ENABLE_INTERRUPTS_SYSEXIT	sti; sysexit
+#define INTERRUPT_RETURN		iret
+#define GET_CR0_INTO_EAX		movl %cr0, %eax
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_PARAVIRT */
+
+#ifndef __ASSEMBLY__
+#define raw_local_save_flags(flags) \
+		do { (flags) = __raw_local_save_flags(); } while (0)
+
 #define raw_local_irq_save(flags) \
 		do { (flags) = __raw_local_irq_save(); } while (0)
 
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & (1 << 9));
+}
+
+static inline int raw_irqs_disabled(void)
+{
+	unsigned long flags = __raw_local_save_flags();
+
+	return raw_irqs_disabled_flags(flags);
+}
 #endif /* __ASSEMBLY__ */
 
 /*
diff --git a/include/asm-i386/mach-default/setup_arch.h b/include/asm-i386/mach-default/setup_arch.h
index fb42099e7bd..605e3ccb991 100644
--- a/include/asm-i386/mach-default/setup_arch.h
+++ b/include/asm-i386/mach-default/setup_arch.h
@@ -2,4 +2,6 @@
 
 /* no action for generic */
 
+#ifndef ARCH_SETUP
 #define ARCH_SETUP
+#endif
diff --git a/include/asm-i386/math_emu.h b/include/asm-i386/math_emu.h
index 697673b555c..a4b0aa3320e 100644
--- a/include/asm-i386/math_emu.h
+++ b/include/asm-i386/math_emu.h
@@ -21,6 +21,7 @@ struct info {
 	long ___eax;
 	long ___ds;
 	long ___es;
+	long ___fs;
 	long ___orig_eax;
 	long ___eip;
 	long ___cs;
diff --git a/include/asm-i386/mmu_context.h b/include/asm-i386/mmu_context.h
index 62b7bf18409..68ff102d6f5 100644
--- a/include/asm-i386/mmu_context.h
+++ b/include/asm-i386/mmu_context.h
@@ -44,7 +44,7 @@ static inline void switch_mm(struct mm_struct *prev,
 		 * load the LDT, if the LDT is different:
 		 */
 		if (unlikely(prev->context.ldt != next->context.ldt))
-			load_LDT_nolock(&next->context, cpu);
+			load_LDT_nolock(&next->context);
 	}
 #ifdef CONFIG_SMP
 	else {
@@ -56,14 +56,14 @@ static inline void switch_mm(struct mm_struct *prev,
 			 * tlb flush IPI delivery. We must reload %cr3.
 			 */
 			load_cr3(next->pgd);
-			load_LDT_nolock(&next->context, cpu);
+			load_LDT_nolock(&next->context);
 		}
 	}
 #endif
 }
 
-#define deactivate_mm(tsk, mm) \
-	asm("movl %0,%%fs ; movl %0,%%gs": :"r" (0))
+#define deactivate_mm(tsk, mm)			\
+	asm("movl %0,%%fs": :"r" (0));
 
 #def