23 files changed, 189 insertions, 385 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 6f813009d44..21dc1a061bf 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -37,7 +37,8 @@ obj-$(CONFIG_X86_MSR)		+= msr.o
 obj-$(CONFIG_X86_CPUID)		+= cpuid.o
 obj-$(CONFIG_MICROCODE)		+= microcode.o
 obj-$(CONFIG_PCI)		+= early-quirks.o
-obj-$(CONFIG_APM)		+= apm_32.o
+apm-y				:= apm_32.o
+obj-$(CONFIG_APM)		+= apm.o
 obj-$(CONFIG_X86_SMP)		+= smp_$(BITS).o smpboot_$(BITS).o tsc_sync.o
 obj-$(CONFIG_X86_32_SMP)	+= smpcommon_32.o
 obj-$(CONFIG_X86_64_SMP)	+= smp_64.o smpboot_64.o tsc_sync.o
@@ -74,7 +75,8 @@ ifdef CONFIG_INPUT_PCSPKR
 obj-y				+= pcspeaker.o
 endif
 
-obj-$(CONFIG_SCx200)		+= scx200_32.o
+obj-$(CONFIG_SCx200)		+= scx200.o
+scx200-y			+= scx200_32.o
 
 ###
 # 64 bit specific files
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index cfdb2f3bd76..a0c4d7c5dbd 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -3,6 +3,7 @@
 #
 
 obj-y			:= intel_cacheinfo.o addon_cpuid_features.o
+obj-y			+= feature_names.o
 
 obj-$(CONFIG_X86_32)	+= common.o proc.o bugs.o
 obj-$(CONFIG_X86_32)	+= amd.o
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index b7b2142b58e..d9313d9adce 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -623,16 +623,6 @@ cpumask_t cpu_initialized __cpuinitdata = CPU_MASK_NONE;
  * They will insert themselves into the cpu_devs structure.
  * Then, when cpu_init() is called, we can just iterate over that array.
  */
-
-extern int intel_cpu_init(void);
-extern int cyrix_init_cpu(void);
-extern int nsc_init_cpu(void);
-extern int amd_init_cpu(void);
-extern int centaur_init_cpu(void);
-extern int transmeta_init_cpu(void);
-extern int nexgen_init_cpu(void);
-extern int umc_init_cpu(void);
-
 void __init early_cpu_init(void)
 {
 	intel_cpu_init();
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h
index ad6527a5beb..e0b38c33d84 100644
--- a/arch/x86/kernel/cpu/cpu.h
+++ b/arch/x86/kernel/cpu/cpu.h
@@ -27,3 +27,12 @@ extern void display_cacheinfo(struct cpuinfo_x86 *c);
 extern void early_init_intel(struct cpuinfo_x86 *c);
 extern void early_init_amd(struct cpuinfo_x86 *c);
 
+/* Specific CPU type init functions */
+int intel_cpu_init(void);
+int amd_init_cpu(void);
+int cyrix_init_cpu(void);
+int nsc_init_cpu(void);
+int centaur_init_cpu(void);
+int transmeta_init_cpu(void);
+int nexgen_init_cpu(void);
+int umc_init_cpu(void);
diff --git a/arch/x86/kernel/cpu/feature_names.c b/arch/x86/kernel/cpu/feature_names.c
new file mode 100644
index 00000000000..ee975ac6bbc
--- /dev/null
+++ b/arch/x86/kernel/cpu/feature_names.c
@@ -0,0 +1,83 @@
+/*
+ * Strings for the various x86 capability flags.
+ *
+ * This file must not contain any executable code.
+ */
+
+#include "asm/cpufeature.h"
+
+/*
+ * These flag bits must match the definitions in <asm/cpufeature.h>.
+ * NULL means this bit is undefined or reserved; either way it doesn't
+ * have meaning as far as Linux is concerned.  Note that it's important
+ * to realize there is a difference between this table and CPUID -- if
+ * applications want to get the raw CPUID data, they should access
+ * /dev/cpu/<cpu_nr>/cpuid instead.
+ */
+const char * const x86_cap_flags[NCAPINTS*32] = {
+	/* Intel-defined */
+	"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
+	"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
+	"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
+	"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
+
+	/* AMD-defined */
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
+	NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
+	"3dnowext", "3dnow",
+
+	/* Transmeta-defined */
+	"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+	/* Other (Linux-defined) */
+	"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
+	NULL, NULL, NULL, NULL,
+	"constant_tsc", "up", NULL, "arch_perfmon",
+	"pebs", "bts", NULL, NULL,
+	"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+	/* Intel-defined (#2) */
+	"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
+	"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
+	NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+	/* VIA/Cyrix/Centaur-defined */
+	NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
+	"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+	/* AMD-defined (#2) */
+	"lahf_lm", "cmp_legacy", "svm", "extapic",
+	"cr8_legacy", "abm", "sse4a", "misalignsse",
+	"3dnowprefetch", "osvw", "ibs", "sse5",
+	"skinit", "wdt", NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+	/* Auxiliary (Linux-defined) */
+	"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+};
+
+const char *const x86_power_flags[32] = {
+	"ts",	/* temperature sensor */
+	"fid",  /* frequency id control */
+	"vid",  /* voltage id control */
+	"ttp",  /* thermal trip */
+	"tm",
+	"stc",
+	"100mhzsteps",
+	"hwpstate",
+	"",	/* tsc invariant mapped to constant_tsc */
+		/* nothing */
+};
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index d1c372b018d..fae31ce747b 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -13,6 +13,7 @@
 #include <asm/uaccess.h>
 #include <asm/ptrace.h>
 #include <asm/ds.h>
+#include <asm/bugs.h>
 
 #include "cpu.h"
 
diff --git a/arch/x86/kernel/cpu/mtrr/cyrix.c b/arch/x86/kernel/cpu/mtrr/cyrix.c
index 8e139c70f88..ff14c320040 100644
--- a/arch/x86/kernel/cpu/mtrr/cyrix.c
+++ b/arch/x86/kernel/cpu/mtrr/cyrix.c
@@ -7,8 +7,6 @@
 #include <asm/processor-flags.h>
 #include "mtrr.h"
 
-int arr3_protected;
-
 static void
 cyrix_get_arr(unsigned int reg, unsigned long *base,
 	      unsigned long *size, mtrr_type * type)
@@ -99,8 +97,6 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 	case 4:
 		return replace_reg;
 	case 3:
-		if (arr3_protected)
-			break;
 	case 2:
 	case 1:
 	case 0:
@@ -115,8 +111,6 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 	} else {
 		for (i = 0; i < 7; i++) {
 			cyrix_get_arr(i, &lbase, &lsize, &ltype);
-			if ((i == 3) && arr3_protected)
-				continue;
 			if (lsize == 0)
 				return i;
 		}
@@ -260,107 +254,6 @@ static void cyrix_set_all(void)
 	post_set();
 }
 
-#if 0
-/*
- * On Cyrix 6x86(MX) and M II the ARR3 is special: it has connection
- * with the SMM (System Management Mode) mode. So we need the following:
- * Check whether SMI_LOCK (CCR3 bit 0) is set
- *   if it is set, write a warning message: ARR3 cannot be changed!
- *     (it cannot be changed until the next processor reset)
- *   if it is reset, then we can change it, set all the needed bits:
- *   - disable access to SMM memory through ARR3 range (CCR1 bit 7 reset)
- *   - disable access to SMM memory (CCR1 bit 2 reset)
- *   - disable SMM mode (CCR1 bit 1 reset)
- *   - disable write protection of ARR3 (CCR6 bit 1 reset)
- *   - (maybe) disable ARR3
- * Just to be sure, we enable ARR usage by the processor (CCR5 bit 5 set)
- */
-static void __init
-cyrix_arr_init(void)
-{
-	struct set_mtrr_context ctxt;
-	unsigned char ccr[7];
-	int ccrc[7] = { 0, 0, 0, 0, 0, 0, 0 };
-#ifdef CONFIG_SMP
-	int i;
-#endif
-
-	/* flush cache and enable MAPEN */
-	set_mtrr_prepare_save(&ctxt);
-	set_mtrr_cache_disable(&ctxt);
-
-	/* Save all CCRs locally */
-	ccr[0] = getCx86(CX86_CCR0);
-	ccr[1] = getCx86(CX86_CCR1);
-	ccr[2] = getCx86(CX86_CCR2);
-	ccr[3] = ctxt.ccr3;
-	ccr[4] = getCx86(CX86_CCR4);
-	ccr[5] = getCx86(CX86_CCR5);
-	ccr[6] = getCx86(CX86_CCR6);
-
-	if (ccr[3] & 1) {
-		ccrc[3] = 1;
-		arr3_protected = 1;
-	} else {
-		/* Disable SMM mode (bit 1), access to SMM memory (bit 2) and
-		 * access to SMM memory through ARR3 (bit 7).
-		 */
-		if (ccr[1] & 0x80) {
-			ccr[1] &= 0x7f;
-			ccrc[1] |= 0x80;
-		}
-		if (ccr[1] & 0x04) {
-			ccr[1] &= 0xfb;
-			ccrc[1] |= 0x04;
-		}
-		if (ccr[1] & 0x02) {
-			ccr[1] &= 0xfd;
-			ccrc[1] |= 0x02;
-		}
-		arr3_protected = 0;
-		if (ccr[6] & 0x02) {
-			ccr[6] &= 0xfd;
-			ccrc[6] = 1;	/* Disable write protection of ARR3 */
-			setCx86(CX86_CCR6, ccr[6]);
-		}
-		/* Disable ARR3. This is safe now that we disabled SMM. */
-		/* cyrix_set_arr_up (3, 0, 0, 0, FALSE); */
-	}
-	/* If we changed CCR1 in memory, change it in the processor, too. */
-	if (ccrc[1])
-		setCx86(CX86_CCR1, ccr[1]);
-
-	/* Enable ARR usage by the processor */
-	if (!(ccr[5] & 0x20)) {
-		ccr[5] |= 0x20;
-		ccrc[5] = 1;
-		setCx86(CX86_CCR5, ccr[5]);
-	}
-#ifdef CONFIG_SMP
-	for (i = 0; i < 7; i++)
-		ccr_state[i] = ccr[i];
-	for (i = 0; i < 8; i++)
-		cyrix_get_arr(i,
-			      &arr_state[i].base, &arr_state[i].size,
-			      &arr_state[i].type);
-#endif
-
-	set_mtrr_done(&ctxt);	/* flush cache and disable MAPEN */
-
-	if (ccrc[5])
-		printk(KERN_INFO "mtrr: ARR usage was not enabled, enabled manually\n");
-	if (ccrc[3])
-		printk(KERN_INFO "mtrr: ARR3 cannot be changed\n");
-/*
-    if ( ccrc[1] & 0x80) printk ("mtrr: SMM memory access through ARR3 disabled\n");
-    if ( ccrc[1] & 0x04) printk ("mtrr: SMM memory access disabled\n");
-    if ( ccrc[1] & 0x02) printk ("mtrr: SMM mode disabled\n");
-*/
-	if (ccrc[6])
-		printk(KERN_INFO "mtrr: ARR3 was write protected, unprotected\n");
-}
-#endif
-
 static struct mtrr_ops cyrix_mtrr_ops = {
 	.vendor            = X86_VENDOR_CYRIX,
 //	.init              = cyrix_arr_init,
diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
index 71591958265..1e27b69a7a0 100644
--- a/arch/x86/kernel/cpu/mtrr/main.c
+++ b/arch/x86/kernel/cpu/mtrr/main.c
@@ -59,12 +59,6 @@ struct mtrr_ops * mtrr_if = NULL;
 static void set_mtrr(unsigned int reg, unsigned long base,
 		     unsigned long size, mtrr_type type);
 
-#ifndef CONFIG_X86_64
-extern int arr3_protected;
-#else
-#define arr3_protected 0
-#endif
-
 void set_mtrr_ops(struct mtrr_ops * ops)
 {
 	if (ops->vendor && ops->vendor < X86_VENDOR_NUM)
@@ -513,12 +507,6 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
 		printk(KERN_WARNING "mtrr: register: %d too big\n", reg);
 		goto out;
 	}
-	if (is_cpu(CYRIX) && !use_intel()) {
-		if ((reg == 3) && arr3_protected) {
-			printk(KERN_WARNING "mtrr: ARR3 cannot be changed\n");
-			goto out;
-		}
-	}
 	mtrr_if->get(reg, &lbase, &lsize, &ltype);
 	if (lsize < 1) {
 		printk(KERN_WARNING "mtrr: MTRR %d not used\n", reg);
@@ -566,10 +554,6 @@ EXPORT_SYMBOL(mtrr_del);
  * These should be called implicitly, but we can't yet until all the initcall
  * stuff is done...
  */
-extern void amd_init_mtrr(void);
-extern void cyrix_init_mtrr(void);
-extern void centaur_init_mtrr(void);
-
 static void __init init_ifs(void)
 {
 #ifndef CONFIG_X86_64
diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h
index fb74a2c2081..2cc77eb6fea 100644
--- a/arch/x86/kernel/cpu/mtrr/mtrr.h
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
@@ -97,3 +97,7 @@ void mtrr_state_warn(void);
 const char *mtrr_attrib_to_str(int x);
 void mtrr_wrmsr(unsigned, unsigned, unsigned);
 
+/* CPU specific mtrr init functions */
+int amd_init_mtrr(void);
+int cyrix_init_mtrr(void);
+int centaur_init_mtrr(void);
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 02821326014..af11d31dce0 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -10,80 +10,6 @@
  */
 static int show_cpuinfo(struct seq_file *m, void *v)
 {
-	/* 
-	 * These flag bits must match the definitions in <asm/cpufeature.h>.
-	 * NULL means this bit is undefined or reserved; either way it doesn't
-	 * have meaning as far as Linux is concerned.  Note that it's important
-	 * to realize there is a difference between this table and CPUID -- if
-	 * applications want to get the raw CPUID data, they should access
-	 * /dev/cpu/<cpu_nr>/cpuid instead.
-	 */
-	static const char * const x86_cap_flags[] = {
-		/* Intel-defined */
-	        "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
-	        "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
-	        "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
-	        "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
-
-		/* AMD-defined */
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
-		NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
-		"3dnowext", "3dnow",
-
-		/* Transmeta-defined */
-		"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Other (Linux-defined) */
-		"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
-		NULL, NULL, NULL, NULL,
-		"constant_tsc", "up", NULL, "arch_perfmon",
-		"pebs", "bts", NULL, "sync_rdtsc",
-		"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Intel-defined (#2) */
-		"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
-		"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
-		NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* VIA/Cyrix/Centaur-defined */
-		NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
-		"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* AMD-defined (#2) */
-		"lahf_lm", "cmp_legacy", "svm", "extapic",
-		"cr8_legacy", "abm", "sse4a", "misalignsse",
-		"3dnowprefetch", "osvw", "ibs", "sse5",
-		"skinit", "wdt", NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Auxiliary (Linux-defined) */
-		"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-	};
-	static const char * const x86_power_flags[] = {
-		"ts",	/* temperature sensor */
-		"fid",  /* frequency id control */
-		"vid",  /* voltage id control */
-		"ttp",  /* thermal trip */
-		"tm",
-		"stc",
-		"100mhzsteps",
-		"hwpstate",
-		"",	/* constant_tsc - moved to flags */
-		/* nothing */
-	};
 	struct cpuinfo_x86 *c = v;
 	int i, n = 0;
 	int fpu_exception;
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index a63432d800f..288e7a6598a 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -1,6 +1,6 @@
 /* ----------------------------------------------------------------------- *
- *   
- *   Copyright 2000 H. Peter Anvin - All Rights Reserved
+ *
+ *   Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -17,6 +17,10 @@
  * and then read in chunks of 16 bytes.  A larger size means multiple
  * reads of consecutive levels.
  *
+ * The lower 32 bits of the file position is used as the incoming %eax,
+ * and the upper 32 bits of the file position as the incoming %ecx,
+ * the latter intended for "counting" eax levels like eax=4.
+ *
  * This driver uses /dev/cpu/%d/cpuid where %d is the minor number, and on
  * an SMP box will direct the access to CPU %d.
  */
@@ -43,35 +47,24 @@
 
 static struct class *cpuid_class;
 
-struct cpuid_command {
-	u32 reg;
-	u32 *data;
+struct cpuid_regs {
+	u32 eax, ebx, ecx, edx;
 };
 
 static void cpuid_smp_cpuid(void *cmd_block)
 {
-	struct cpuid_command *cmd = cmd_block;
-
-	cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
-		      &cmd->data[3]);
-}
-
-static inline void do_cpuid(int cpu, u32 reg, u32 * data)
-{
-	struct cpuid_command cmd;
-
-	cmd.reg = reg;
-	cmd.data = data;
+	struct cpuid_regs *cmd = (struct cpuid_regs *)cmd_block;
 
-	smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
+	cpuid_count(cmd->eax, cmd->ecx,
+		    &cmd->eax, &cmd->ebx, &cmd->ecx, &cmd->edx);
 }
 
 static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
 {
 	loff_t ret;
+	struct inode *inode = file->f_mapping->host;
 
-	lock_kernel();
-
+	mutex_lock(&inode->i_mutex);
 	switch (orig) {
 	case 0:
 		file->f_pos = offset;
@@ -84,8 +77,7 @@ static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
 	default:
 		ret = -EINVAL;
 	}
-
-	unlock_kernel();
+	mutex_unlock(&inode->i_mutex);
 	return ret;
 }
 
@@ -93,19 +85,21 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
 			  size_t count, loff_t * ppos)
 {
 	char __user *tmp = buf;
-	u32 data[4];
-	u32 reg = *ppos;
+	struct cpuid_regs cmd;
 	int cpu = iminor(file->f_path.dentry->d_inode);
+	u64 pos = *ppos;
 
 	if (count % 16)
 		return -EINVAL;	/* Invalid chunk size */
 
 	for (; count; count -= 16) {
-		do_cpuid(cpu, reg, data);
-		if (copy_to_user(tmp, &data, 16))
+		cmd.eax = pos;
+		cmd.ecx = pos >> 32;
+		smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
+		if (copy_to_user(tmp, &cmd, 16))
 			return -EFAULT;
 		tmp += 16;
-		*ppos = reg++;
+		*ppos = ++pos;
 	}
 
 	return tmp - buf;
@@ -193,7 +187,7 @@ static int __init cpuid_init(void)
 	}
 	for_each_online_cpu(i) {
 		err = cpuid_device_create(i);
-		if (err != 0) 
+		if (err != 0)
 			goto out_class;
 	}
 	register_hotcpu_notifier(&cpuid_class_cpu_notifier);
@@ -208,7 +202,7 @@ out_class:
 	}
 	class_destroy(cpuid_class);
 out_chrdev:
-	unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");	
+	unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
 out:
 	return err;
 }
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 1411324a625..32dd62b36ff 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -379,11 +379,9 @@ void __init efi_init(void)
 #endif
 }
 
-#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 static void __init runtime_code_page_mkexec(void)
 {
 	efi_memory_desc_t *md;
-	unsigned long end;
 	void *p;
 
 	if (!(__supported_pte_mask & _PAGE_NX))
@@ -392,18 +390,13 @@ static void __init runtime_code_page_mkexec(void)
 	/* Make EFI runtime service code area executable */
 	for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
 		md = p;
-		end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
-		if (md->type == EFI_RUNTIME_SERVICES_CODE &&
-		    (end >> PAGE_SHIFT) <= max_pfn_mapped) {
-			set_memory_x(md->virt_addr, md->num_pages);
-			set_memory_uc(md->virt_addr, md->num_pages);
-		}
+
+		if (md->type != EFI_RUNTIME_SERVICES_CODE)
+			continue;
+
+		set_memory_x(md->virt_addr, md->num_pages << EFI_PAGE_SHIFT);
 	}
-	__flush_tlb_all();
 }
-#else
-static inline void __init runtime_code_page_mkexec(void) { }
-#endif
 
 /*
  * This function will switch the EFI runtime services to virtual mode.
@@ -417,30 +410,40 @@ void __init efi_enter_virtual_mode(void)
 {
 	efi_memory_desc_t *md;
 	efi_status_t status;
-	unsigned long end;
-	void *p;
+	unsigned long size;
+	u64 end, systab;
+	void *p, *va;
 
 	efi.systab = NULL;
 	for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
 		md = p;
 		if (!(md->attribute & EFI_MEMORY_RUNTIME))
 			continue;
-		end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
-		if ((md->attribute & EFI_MEMORY_WB) &&
-		    ((end >> PAGE_SHIFT) <= max_pfn_mapped))
-			md->virt_addr = (unsigned long)__va(md->phys_addr);
+
+		size = md->num_pages << EFI_PAGE_SHIFT;
+		end = md->phys_addr + size;
+
+		if ((end >> PAGE_SHIFT) <= max_pfn_mapped)
+			va = __va(md->phys_addr);
 		else
-			md->virt_addr = (unsigned long)
-				efi_ioremap(md->phys_addr,
-					    md->num_pages << EFI_PAGE_SHIFT);
-		if (!md->virt_addr)
+			va = efi_ioremap(md->phys_addr, size);
+
+		if (md->attribute & EFI_MEMORY_WB)
+			set_memory_uc(md->virt_addr, size);
+
+		md->virt_addr = (u64) (unsigned long) va;
+
+		if (!va) {
 			printk(KERN_ERR PFX "ioremap of 0x%llX failed!\n",
 			       (unsigned long long)md->phys_addr);
-		if ((md->phys_addr <= (unsigned long)efi_phys.systab) &&
-		    ((unsigned long)efi_phys.systab < end))
-			efi.systab = (efi_system_table_t *)(unsigned long)
-				(md->virt_addr - md->phys_addr +
-				 (unsigned long)efi_phys.systab);
+			continue;
+		}
+
+		systab = (u64) (unsigned long) efi_phys.systab;
+		if (md->phys_addr <= systab && systab < end) {
+			systab += md->virt_addr - md->phys_addr;
+			efi.systab = (efi_system_table_t *) (unsigned long) systab;
+		}
 	}
 
 	BUG_ON(!efi.systab);
diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c
index 674f2379480..09d5c233093 100644
--- a/arch/x86/kernel/efi_64.c
+++ b/arch/x86/kernel/efi_64.c
@@ -54,10 +54,10 @@ static void __init early_mapping_set_exec(unsigned long start,
 		else
 			set_pte(kpte, __pte((pte_val(*kpte) | _PAGE_NX) & \
 					    __supported_pte_mask));
-		if (level == 4)
-			start = (start + PMD_SIZE) & PMD_MASK;
-		else
+		if (level == PG_LEVEL_4K)
 			start = (start + PAGE_SIZE) & PAGE_MASK;
+		else
+			start = (start + PMD_SIZE) & PMD_MASK;
 	}
 }
 
@@ -109,23 +109,23 @@ void __init efi_reserve_bootmem(void)
 				memmap.nr_map * memmap.desc_size);
 }
 
-void __iomem * __init efi_ioremap(unsigned long offset,
-				  unsigned long size)
+void __iomem * __init efi_ioremap(unsigned long phys_addr, unsigned long size)
 {
 	static unsigned pages_mapped;
-	unsigned long last_addr;
 	unsigned i, pages;
 
-	last_addr = offset + size - 1;
-	offset &= PAGE_MASK;
-	pages = (PAGE_ALIGN(last_addr) - offset) >> PAGE_SHIFT;
+	/* phys_addr and size must be page aligned */
+	if ((phys_addr & ~PAGE_MASK) || (size & ~PAGE_MASK))
+		return NULL;
+
+	pages = size >> PAGE_SHIFT;
 	if (pages_mapped + pages > MAX_EFI_IO_PAGES)
 		return NULL;
 
 	for (i = 0; i < pages; i++) {
 		__set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
-			     offset, PAGE_KERNEL_EXEC_NOCACHE);
-		offset += PAGE_SIZE;
+			     phys_addr, PAGE_KERNEL);
+		phys_addr += PAGE_SIZE;
 		pages_mapped++;
 	}
 
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 1d5a7a36120..4f283ad215e 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -63,7 +63,7 @@ startup_64:
 
 	/* Is the address not 2M aligned? */
 	movq	%rbp, %rax
-	andl	$~LARGE_PAGE_MASK, %eax
+	andl	$~PMD_PAGE_MASK, %eax
 	testl	%eax, %eax
 	jnz	bad_address
 
@@ -88,7 +88,7 @@ startup_64:
 
 	/* Add an Identity mapping if I am above 1G */
 	leaq	_text(%rip), %rdi
-	andq	$LARGE_PAGE_MASK, %rdi
+	andq	$PMD_PAGE_MASK, %rdi
 
 	movq	%rdi, %rax
 	shrq	$PUD_SHIFT, %rax
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 8a7660c8394..0224c3637c7 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -35,7 +35,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 	if (mincount <= pc->size)
 		return 0;
 	oldsize = pc->size;
-	mincount = (mincount + 511) & (~511);
+	mincount = (mincount + (PAGE_SIZE / LDT_ENTRY_SIZE - 1)) &
+			(~(PAGE_SIZE / LDT_ENTRY_SIZE - 1));
 	if (mincount * LDT_ENTRY_SIZE > PAGE_SIZE)
 		newldt = vmalloc(mincount * LDT_ENTRY_SIZE);
 	else
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index bd82850e651..af51ea8400b 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -1,6 +1,6 @@
 /* ----------------------------------------------------------------------- *
- *   
- *   Copyright 2000 H. Peter Anvin - All Rights Reserved
+ *
+ *   Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -45,9 +45,10 @@ static struct class *msr_class;
 
 static loff_t msr_seek(struct file *file, loff_t offset, int orig)
 {
-	loff_t ret = -EINVAL;
+	loff_t ret;
+	struct inode *inode = file->f_mapping->host;
 
-	lock_kernel();
+	mutex_lock(&inode->i_mutex);
 	switch (orig) {
 	case 0:
 		file->f_pos = offset;
@@ -56,8 +57,11 @@ static loff_t msr_seek(struct file *file, loff_t offset, int orig)
 	case 1:
 		file->f_pos += offset;
 		ret = file->f_pos;
+		break;
+	default:
+		ret = -EINVAL;
 	}
-	unlock_kernel();
+	mutex_unlock(&inode->i_mutex);
 	return ret;
 }
 
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 4d5cc718198..845cbecd68e 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -501,7 +501,7 @@ static __init unsigned long check_iommu_size(unsigned long aper, u64 aper_size)
 	}
 
 	a = aper + iommu_size;
-	iommu_size -= round_up(a, LARGE_PAGE_SIZE) - a;
+	iommu_size -= round_up(a, PMD_PAGE_SIZE) - a;
 
 	if (iommu_size < 64*1024*1024) {
 		printk(KERN_WARNING
@@ -731,7 +731,8 @@ void __init gart_iommu_init(void)
 	 * the backing memory. The GART address is only used by PCI
 	 * devices.
 	 */
-	clear_kernel_mapping((unsigned long)__va(iommu_bus_base), iommu_size);
+	set_memory_np((unsigned long)__va(iommu_bus_base),
+				iommu_size >> PAGE_SHIFT);
 
 	/*
 	 * Try to workaround a bug (thanks to BenH)
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 968371ab223..dabdbeff1f7 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -251,7 +251,7 @@ void cpu_idle_wait(void)
 		 * because it has nothing to do.
 		 * Give all the remaining CPUS a kick.
 		 */
-		smp_call_function_mask(map, do_nothing, 0, 0);
+		smp_call_function_mask(map, do_nothing, NULL, 0);
 	} while (!cpus_empty(map));
 
 	set_cpus_allowed(current, tmp);
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 18df70c534b..c8939dfddfb 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -1068,82 +1068,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	struct cpuinfo_x86 *c = v;
 	int cpu = 0, i;
 
-	/*
-	 * These flag bits must match the definitions in <asm/cpufeature.h>.
-	 * NULL means this bit is undefined or reserved; either way it doesn't
-	 * have meaning as far as Linux is concerned.  Note that it's important
-	 * to realize there is a difference between this table and CPUID -- if
-	 * applications want to get the raw CPUID data, they should access
-	 * /dev/cpu/<cpu_nr>/cpuid instead.
-	 */
-	static const char *const x86_cap_flags[] = {
-		/* Intel-defined */
-		"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
-		"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
-		"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
-		"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
-
-		/* AMD-defined */
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL,
-		NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
-		"3dnowext", "3dnow",
-
-		/* Transmeta-defined */
-		"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Other (Linux-defined) */
-		"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
-		NULL, NULL, NULL, NULL,
-		"constant_tsc", "up", NULL, "arch_perfmon",
-		"pebs", "bts", NULL, "sync_rdtsc",
-		"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Intel-defined (#2) */
-		"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
-		"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
-		NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* VIA/Cyrix/Centaur-defined */
-		NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
-		"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* AMD-defined (#2) */
-		"lahf_lm", "cmp_legacy", "svm", "extapic",
-		"cr8_legacy", "abm", "sse4a", "misalignsse",
-		"3dnowprefetch", "osvw", "ibs", "sse5",
-		"skinit", "wdt", NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-		/* Auxiliary (Linux-defined) */
-		"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-	};
-	static const char *const x86_power_flags[] = {
-		"ts",	/* temperature sensor */
-		"fid",  /* frequency id control */
-		"vid",  /* voltage id control */
-		"ttp",  /* thermal trip */
-		"tm",
-		"stc",
-		"100mhzsteps",
-		"hwpstate",
-		"",	/* tsc invariant mapped to constant_tsc */
-		/* nothing */
-	};
-
-
 #ifdef CONFIG_SMP
 	cpu = c->cpu_index;
 #endif
diff --git a/arch/x86/kernel/test_nx.c b/arch/x86/kernel/test_nx.c
index ae0ef2e304c..36c100c323a 100644
--- a/arch/x86/kernel/test_nx.c
+++ b/arch/x86/kernel/test_nx.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/sort.h>
 #include <asm/uaccess.h>
+#include <asm/asm.h>
 
 extern int rodata_test_data;
 
@@ -89,16 +90,7 @@ static noinline int test_address(void *address)
 		"2:	mov %[zero], %[rslt]\n"
 		"	ret\n"
 		".previous\n"
-		".section __ex_table,\"a\"\n"
-		"       .align 8\n"
-#ifdef CONFIG_X86_32
-		"	.long 0b\n"
-		"	.long 2b\n"
-#else
-		"	.quad 0b\n"
-		"	.quad 2b\n"
-#endif
-		".previous\n"
+		_ASM_EXTABLE(0b,2b)
 		: [rslt] "=r" (result)
 		: [fake_code] "r" (address), [zero] "r" (0UL), "0" (result)
 	);
diff --git a/arch/x86/kernel/trampoline_32.S b/arch/x86/kernel/trampoline_32.S
index 9bcc1c6aca3..64580679861 100644
--- a/arch/x86/kernel/trampoline_32.S
+++ b/arch/x86/kernel/trampoline_32.S
@@ -11,12 +11,7 @@
  *	trampoline page to make our stack and everything else
  *	is a mystery.
  *
- *	In fact we don't actually need a stack so we don't
- *	set one up.
- *
- *	We jump into the boot/compressed/head.S code. So you'd
- *	better be running a compressed kernel image or you
- *	won't get very far.
+ *	We jump into arch/x86/kernel/head_32.S.
  *
  *	On entry to trampoline_data, the processor is in real mode
  *	with 16-bit addressing and 16-bit data.  CS has some value
diff --git a/arch/x86/kernel/trampoline_64.S b/arch/x86/kernel/trampoline_64.S
index e30b67c6a9f..4aedd0bcee4 100644
--- a/arch/x86/kernel/trampoline_64.S
+++ b/arch/x86/kernel/trampoline_64.S
@@ -10,9 +10,6 @@
  *	trampoline page to make our stack and everything else
  *	is a mystery.
  *
- *	In fact we don't actually need a stack so we don't
- *	set one up.
- *
  *	On entry to trampoline_data, the processor is in real mode
  *	with 16-bit addressing and 16-bit data.  CS has some value
  *	and IP is zero.  Thus, data addresses need to be absolute
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 4525bc2c2e1..12affe1f9bc 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -220,21 +220,21 @@ static void vmi_set_tr(void)
 static void vmi_write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
 {
 	u32 *idt_entry = (u32 *)g;
-	vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[2]);
+	vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[1]);
 }
 
 static void vmi_write_gdt_entry(struct desc_struct *dt, int entry,
 				const void *desc, int type)
 {
 	u32 *gdt_entry = (u32 *)desc;
-	vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[2]);
+	vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[1]);
 }
 
 static void vmi_write_ldt_entry(struct desc_struct *dt, int entry,
 				const void *desc)
 {
 	u32 *ldt_entry = (u32 *)desc;
-	vmi_ops.write_idt_entry(dt, entry, ldt_entry[0], ldt_entry[2]);
+	vmi_ops.write_idt_entry(dt, entry, ldt_entry[0], ldt_entry[1]);
 }
 
 static void vmi_load_sp0(struct tss_struct *tss,