Merge ../linus

Conflicts:

	drivers/cpufreq/cpufreq.c

65 files changed, 1245 insertions, 541 deletions

diff --git a/include/asm-i386/Kbuild b/include/asm-i386/Kbuild
index 147e4ac1ebf..5ae93afc67e 100644
--- a/include/asm-i386/Kbuild
+++ b/include/asm-i386/Kbuild
@@ -7,5 +7,4 @@ header-y += ptrace-abi.h
 header-y += ucontext.h
 
 unifdef-y += mtrr.h
-unifdef-y += setup.h
 unifdef-y += vm86.h
diff --git a/include/asm-i386/acpi.h b/include/asm-i386/acpi.h
index 6016632d032..c80b3a94511 100644
--- a/include/asm-i386/acpi.h
+++ b/include/asm-i386/acpi.h
@@ -132,6 +132,7 @@ extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 
 #ifdef CONFIG_X86_IO_APIC
 extern int acpi_skip_timer_override;
+extern int acpi_use_timer_override;
 #endif
 
 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
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 51a16624252..c57441bb290 100644
--- a/include/asm-i386/atomic.h
+++ b/include/asm-i386/atomic.h
@@ -14,7 +14,7 @@
  * on us. We need to use _exactly_ the address the user gave us,
  * not some alias that contains the same information.
  */
-typedef struct { volatile int counter; } atomic_t;
+typedef struct { int counter; } atomic_t;
 
 #define ATOMIC_INIT(i)	{ (i) }
 
@@ -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/bug.h b/include/asm-i386/bug.h
index 8062cdbf258..b0fd78ca261 100644
--- a/include/asm-i386/bug.h
+++ b/include/asm-i386/bug.h
@@ -4,20 +4,32 @@
 
 /*
  * Tell the user there is some problem.
- * The offending file and line are encoded after the "officially
- * undefined" opcode for parsing in the trap handler.
+ * The offending file and line are encoded encoded in the __bug_table section.
  */
 
 #ifdef CONFIG_BUG
 #define HAVE_ARCH_BUG
+
 #ifdef CONFIG_DEBUG_BUGVERBOSE
-#define BUG()				\
- __asm__ __volatile__(	"ud2\n"		\
-			"\t.word %c0\n"	\
-			"\t.long %c1\n"	\
-			 : : "i" (__LINE__), "i" (__FILE__))
+#define BUG()								\
+	do {								\
+		asm volatile("1:\tud2\n"				\
+			     ".pushsection __bug_table,\"a\"\n"		\
+			     "2:\t.long 1b, %c0\n"			\
+			     "\t.word %c1, 0\n"				\
+			     "\t.org 2b+%c2\n"				\
+			     ".popsection"				\
+			     : : "i" (__FILE__), "i" (__LINE__),	\
+			     "i" (sizeof(struct bug_entry)));		\
+		for(;;) ;						\
+	} while(0)
+
 #else
-#define BUG() __asm__ __volatile__("ud2\n")
+#define BUG()								\
+	do {								\
+		asm volatile("ud2");					\
+		for(;;) ;						\
+	} while(0)
 #endif
 #endif
 
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/checksum.h b/include/asm-i386/checksum.h
index 67d3630c4e8..75194abbe8e 100644
--- a/include/asm-i386/checksum.h
+++ b/include/asm-i386/checksum.h
@@ -17,7 +17,7 @@
  *
  * it's best to have buff aligned on a 32-bit boundary
  */
-asmlinkage unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum);
+asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
 
 /*
  * the same as csum_partial, but copies from src while it
@@ -27,8 +27,8 @@ asmlinkage unsigned int csum_partial(const unsigned char * buff, int len, unsign
  * better 64-bit) boundary
  */
 
-asmlinkage unsigned int csum_partial_copy_generic(const unsigned char *src, unsigned char *dst,
-						  int len, int sum, int *src_err_ptr, int *dst_err_ptr);
+asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
+						  int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr);
 
 /*
  *	Note: when you get a NULL pointer exception here this means someone
@@ -38,18 +38,18 @@ asmlinkage unsigned int csum_partial_copy_generic(const unsigned char *src, unsi
  *	access_ok().
  */
 static __inline__
-unsigned int csum_partial_copy_nocheck (const unsigned char *src, unsigned char *dst,
-					int len, int sum)
+__wsum csum_partial_copy_nocheck (const void *src, void *dst,
+					int len, __wsum sum)
 {
 	return csum_partial_copy_generic ( src, dst, len, sum, NULL, NULL);
 }
 
 static __inline__
-unsigned int csum_partial_copy_from_user(const unsigned char __user *src, unsigned char *dst,
-						int len, int sum, int *err_ptr)
+__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+						int len, __wsum sum, int *err_ptr)
 {
 	might_sleep();
-	return csum_partial_copy_generic((__force unsigned char *)src, dst,
+	return csum_partial_copy_generic((__force void *)src, dst,
 					len, sum, err_ptr, NULL);
 }
 
@@ -60,8 +60,7 @@ unsigned int csum_partial_copy_from_user(const unsigned char __user *src, unsign
  *	By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
  *	Arnt Gulbrandsen.
  */
-static inline unsigned short ip_fast_csum(unsigned char * iph,
-					  unsigned int ihl)
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
 {
 	unsigned int sum;
 
@@ -89,29 +88,29 @@ static inline unsigned short ip_fast_csum(unsigned char * iph,
 	: "=r" (sum), "=r" (iph), "=r" (ihl)
 	: "1" (iph), "2" (ihl)
 	: "memory");
-	return(sum);
+	return (__force __sum16)sum;
 }
 
 /*
  *	Fold a partial checksum
  */
 
-static inline unsigned int csum_fold(unsigned int sum)
+static inline __sum16 csum_fold(__wsum sum)
 {
 	__asm__(
 		"addl %1, %0		;\n"
 		"adcl $0xffff, %0	;\n"
 		: "=r" (sum)
-		: "r" (sum << 16), "0" (sum & 0xffff0000)
+		: "r" ((__force u32)sum << 16),
+		  "0" ((__force u32)sum & 0xffff0000)
 	);
-	return (~sum) >> 16;
+	return (__force __sum16)(~(__force u32)sum >> 16);
 }
 
-static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
-						   unsigned long daddr,
-						   unsigned short len,
-						   unsigned short proto,
-						   unsigned int sum)
+static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
+					   unsigned short len,
+					   unsigned short proto,
+					   __wsum sum)
 {
     __asm__(
 	"addl %1, %0	;\n"
@@ -119,7 +118,7 @@ static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
 	"adcl %3, %0	;\n"
 	"adcl $0, %0	;\n"
 	: "=r" (sum)
-	: "g" (daddr), "g"(saddr), "g"((ntohs(len)<<16)+proto*256), "0"(sum));
+	: "g" (daddr), "g"(saddr), "g"((len + proto) << 8), "0"(sum));
     return sum;
 }
 
@@ -127,11 +126,10 @@ static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
  * computes the checksum of the TCP/UDP pseudo-header
  * returns a 16-bit checksum, already complemented
  */
-static inline unsigned short int csum_tcpudp_magic(unsigned long saddr,
-						   unsigned long daddr,
+static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
 						   unsigned short len,
 						   unsigned short proto,
-						   unsigned int sum)
+						   __wsum sum)
 {
 	return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
 }
@@ -141,17 +139,16 @@ static inline unsigned short int csum_tcpudp_magic(unsigned long saddr,
  * in icmp.c
  */
 
-static inline unsigned short ip_compute_csum(unsigned char * buff, int len)
+static inline __sum16 ip_compute_csum(const void *buff, int len)
 {
     return csum_fold (csum_partial(buff, len, 0));
 }
 
 #define _HAVE_ARCH_IPV6_CSUM
-static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
-						     struct in6_addr *daddr,
-						     __u32 len,
-						     unsigned short proto,
-						     unsigned int sum)
+static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+					  const struct in6_addr *daddr,
+					  __u32 len, unsigned short proto,
+					  __wsum sum)
 {
 	__asm__(
 		"addl 0(%1), %0		;\n"
@@ -176,19 +173,19 @@ static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
  *	Copy and checksum to user
  */
 #define HAVE_CSUM_COPY_USER
-static __inline__ unsigned int csum_and_copy_to_user(const unsigned char *src,
-						     unsigned char __user *dst,
-						     int len, int sum, 
+static __inline__ __wsum csum_and_copy_to_user(const void *src,
+						     void __user *dst,
+						     int len, __wsum sum,
 						     int *err_ptr)
 {
 	might_sleep();
 	if (access_ok(VERIFY_WRITE, dst, len))
-		return csum_partial_copy_generic(src, (__force unsigned char *)dst, len, sum, NULL, err_ptr);
+		return csum_partial_copy_generic(src, (__force void *)dst, len, sum, NULL, err_ptr);
 
 	if (len)
 		*err_ptr = -EFAULT;
 
-	return -1; /* invalid checksum */
+	return (__force __wsum)-1; /* invalid checksum */
 }
 
 #endif
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