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: (225 commits)
  [PATCH] Don't set calgary iommu as default y
  [PATCH] i386/x86-64: New Intel feature flags
  [PATCH] x86: Add a cumulative thermal throttle event counter.
  [PATCH] i386: Make the jiffies compares use the 64bit safe macros.
  [PATCH] x86: Refactor thermal throttle processing
  [PATCH] Add 64bit jiffies compares (for use with get_jiffies_64)
  [PATCH] Fix unwinder warning in traps.c
  [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1
  [PATCH] x86: Move direct PCI scanning functions out of line
  [PATCH] i386/x86-64: Make all early PCI scans dependent on CONFIG_PCI
  [PATCH] Don't leak NT bit into next task
  [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
  [PATCH] Fix some broken white space in ia32_signal.c
  [PATCH] Initialize argument registers for 32bit signal handlers.
  [PATCH] Remove all traces of signal number conversion
  [PATCH] Don't synchronize time reading on single core AMD systems
  [PATCH] Remove outdated comment in x86-64 mmconfig code
  [PATCH] Use string instructions for Core2 copy/clear
  [PATCH] x86: - restore i8259A eoi status on resume
  [PATCH] i386: Split multi-line printk in oops output.
  ...

6 files changed, 57 insertions, 63 deletions

diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 4198798e1469..1a17b0733ab5 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -40,8 +40,7 @@
 #define PF_RSVD	(1<<3)
 #define PF_INSTR	(1<<4)
 
-#ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
+static ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
 
 /* Hook to register for page fault notifications */
 int register_page_fault_notifier(struct notifier_block *nb)
@@ -49,11 +48,13 @@ int register_page_fault_notifier(struct notifier_block *nb)
 	vmalloc_sync_all();
 	return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
 }
+EXPORT_SYMBOL_GPL(register_page_fault_notifier);
 
 int unregister_page_fault_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
 }
+EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
 
 static inline int notify_page_fault(enum die_val val, const char *str,
 			struct pt_regs *regs, long err, int trap, int sig)
@@ -67,13 +68,6 @@ static inline int notify_page_fault(enum die_val val, const char *str,
 	};
 	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
 }
-#else
-static inline int notify_page_fault(enum die_val val, const char *str,
-			struct pt_regs *regs, long err, int trap, int sig)
-{
-	return NOTIFY_DONE;
-}
-#endif
 
 void bust_spinlocks(int yes)
 {
@@ -102,7 +96,7 @@ void bust_spinlocks(int yes)
 static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 				unsigned long error_code)
 { 
-	unsigned char *instr;
+	unsigned char __user *instr;
 	int scan_more = 1;
 	int prefetch = 0; 
 	unsigned char *max_instr;
@@ -111,7 +105,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 	if (error_code & PF_INSTR)
 		return 0;
 	
-	instr = (unsigned char *)convert_rip_to_linear(current, regs);
+	instr = (unsigned char __user *)convert_rip_to_linear(current, regs);
 	max_instr = instr + 15;
 
 	if (user_mode(regs) && instr >= (unsigned char *)TASK_SIZE)
@@ -122,7 +116,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 		unsigned char instr_hi;
 		unsigned char instr_lo;
 
-		if (__get_user(opcode, instr))
+		if (__get_user(opcode, (char __user *)instr))
 			break; 
 
 		instr_hi = opcode & 0xf0; 
@@ -160,7 +154,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 		case 0x00:
 			/* Prefetch instruction is 0x0F0D or 0x0F18 */
 			scan_more = 0;
-			if (__get_user(opcode, instr)) 
+			if (__get_user(opcode, (char __user *)instr))
 				break;
 			prefetch = (instr_lo == 0xF) &&
 				(opcode == 0x0D || opcode == 0x18);
@@ -176,7 +170,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 static int bad_address(void *p) 
 { 
 	unsigned long dummy;
-	return __get_user(dummy, (unsigned long *)p);
+	return __get_user(dummy, (unsigned long __user *)p);
 } 
 
 void dump_pagetable(unsigned long address)
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 52fd42c40c86..1e4669fa5734 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -229,7 +229,6 @@ __init void *early_ioremap(unsigned long addr, unsigned long size)
 
 	/* actually usually some more */
 	if (size >= LARGE_PAGE_SIZE) { 
-		printk("SMBIOS area too long %lu\n", size);
 		return NULL;
 	}
 	set_pmd(temp_mappings[0].pmd,  __pmd(map | _KERNPG_TABLE | _PAGE_PSE));
@@ -250,12 +249,13 @@ __init void early_iounmap(void *addr, unsigned long size)
 }
 
 static void __meminit
-phys_pmd_init(pmd_t *pmd, unsigned long address, unsigned long end)
+phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end)
 {
-	int i;
+	int i = pmd_index(address);
 
-	for (i = 0; i < PTRS_PER_PMD; pmd++, i++, address += PMD_SIZE) {
+	for (; i < PTRS_PER_PMD; i++, address += PMD_SIZE) {
 		unsigned long entry;
+		pmd_t *pmd = pmd_page + pmd_index(address);
 
 		if (address >= end) {
 			if (!after_bootmem)
@@ -263,6 +263,10 @@ phys_pmd_init(pmd_t *pmd, unsigned long address, unsigned long end)
 					set_pmd(pmd, __pmd(0));
 			break;
 		}
+
+		if (pmd_val(*pmd))
+			continue;
+
 		entry = _PAGE_NX|_PAGE_PSE|_KERNPG_TABLE|_PAGE_GLOBAL|address;
 		entry &= __supported_pte_mask;
 		set_pmd(pmd, __pmd(entry));
@@ -272,45 +276,41 @@ phys_pmd_init(pmd_t *pmd, unsigned long address, unsigned long end)
 static void __meminit
 phys_pmd_update(pud_t *pud, unsigned long address, unsigned long end)
 {
-	pmd_t *pmd = pmd_offset(pud, (unsigned long)__va(address));
-
-	if (pmd_none(*pmd)) {
-		spin_lock(&init_mm.page_table_lock);
-		phys_pmd_init(pmd, address, end);
-		spin_unlock(&init_mm.page_table_lock);
-		__flush_tlb_all();
-	}
+	pmd_t *pmd = pmd_offset(pud,0);
+	spin_lock(&init_mm.page_table_lock);
+	phys_pmd_init(pmd, address, end);
+	spin_unlock(&init_mm.page_table_lock);
+	__flush_tlb_all();
 }
 
-static void __meminit phys_pud_init(pud_t *pud, unsigned long address, unsigned long end)
+static void __meminit phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end)
 { 
-	long i = pud_index(address);
-
-	pud = pud + i;
+	int i = pud_index(addr);
 
-	if (after_bootmem && pud_val(*pud)) {
-		phys_pmd_update(pud, address, end);
-		return;
-	}
 
-	for (; i < PTRS_PER_PUD; pud++, i++) {
+	for (; i < PTRS_PER_PUD; i++, addr = (addr & PUD_MASK) + PUD_SIZE ) {
 		int map; 
-		unsigned long paddr, pmd_phys;
+		unsigned long pmd_phys;
+		pud_t *pud = pud_page + pud_index(addr);
 		pmd_t *pmd;
 
-		paddr = (address & PGDIR_MASK) + i*PUD_SIZE;
-		if (paddr >= end)
+		if (addr >= end)
 			break;
 
-		if (!after_bootmem && !e820_any_mapped(paddr, paddr+PUD_SIZE, 0)) {
+		if (!after_bootmem && !e820_any_mapped(addr,addr+PUD_SIZE,0)) {
 			set_pud(pud, __pud(0)); 
 			continue;
 		} 
 
+		if (pud_val(*pud)) {
+			phys_pmd_update(pud, addr, end);
+			continue;
+		}
+
 		pmd = alloc_low_page(&map, &pmd_phys);
 		spin_lock(&init_mm.page_table_lock);
 		set_pud(pud, __pud(pmd_phys | _KERNPG_TABLE));
-		phys_pmd_init(pmd, paddr, end);
+		phys_pmd_init(pmd, addr, end);
 		spin_unlock(&init_mm.page_table_lock);
 		unmap_low_page(map);
 	}
@@ -597,12 +597,6 @@ void __init mem_init(void)
 
 	pci_iommu_alloc();
 
-	/* How many end-of-memory variables you have, grandma! */
-	max_low_pfn = end_pfn;
-	max_pfn = end_pfn;
-	num_physpages = end_pfn;
-	high_memory = (void *) __va(end_pfn * PAGE_SIZE);
-
 	/* clear the zero-page */
 	memset(empty_zero_page, 0, PAGE_SIZE);
 
diff --git a/arch/x86_64/mm/k8topology.c b/arch/x86_64/mm/k8topology.c
index 7c45c2d2b8b2..5cf594f9230d 100644
--- a/arch/x86_64/mm/k8topology.c
+++ b/arch/x86_64/mm/k8topology.c
@@ -54,6 +54,9 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 
 	nodes_clear(nodes_parsed);
 
+	if (!early_pci_allowed())
+		return -1;
+
 	nb = find_northbridge(); 
 	if (nb < 0) 
 		return nb;
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index b2fac14baac0..322bf45fc36a 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -225,7 +225,7 @@ void __init numa_init_array(void)
 int numa_fake __initdata = 0;
 
 /* Numa emulation */
-static int numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
+static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
 {
  	int i;
  	struct bootnode nodes[MAX_NUMNODES];
@@ -348,9 +348,10 @@ void __init paging_init(void)
 	}
 } 
 
-/* [numa=off] */
-__init int numa_setup(char *opt) 
+static __init int numa_setup(char *opt)
 { 
+	if (!opt)
+		return -EINVAL;
 	if (!strncmp(opt,"off",3))
 		numa_off = 1;
 #ifdef CONFIG_NUMA_EMU
@@ -366,9 +367,11 @@ __init int numa_setup(char *opt)
 	if (!strncmp(opt,"hotadd=", 7))
 		hotadd_percent = simple_strtoul(opt+7, NULL, 10);
 #endif
-	return 1;
+	return 0;
 } 
 
+early_param("numa", numa_setup);
+
 /*
  * Setup early cpu_to_node.
  *
diff --git a/arch/x86_64/mm/pageattr.c b/arch/x86_64/mm/pageattr.c
index 2685b1f3671c..3e231d762aaa 100644
--- a/arch/x86_64/mm/pageattr.c
+++ b/arch/x86_64/mm/pageattr.c
@@ -108,8 +108,8 @@ static void revert_page(unsigned long address, pgprot_t ref_prot)
 	BUG_ON(pud_none(*pud));
 	pmd = pmd_offset(pud, address);
 	BUG_ON(pmd_val(*pmd) & _PAGE_PSE);
-	pgprot_val(ref_prot) |= _PAGE_PSE;
 	large_pte = mk_pte_phys(__pa(address) & LARGE_PAGE_MASK, ref_prot);
+	large_pte = pte_mkhuge(large_pte);
 	set_pte((pte_t *)pmd, large_pte);
 }      
 
@@ -119,32 +119,28 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot,
 { 
 	pte_t *kpte; 
 	struct page *kpte_page;
-	unsigned kpte_flags;
 	pgprot_t ref_prot2;
 	kpte = lookup_address(address);
 	if (!kpte) return 0;
 	kpte_page = virt_to_page(((unsigned long)kpte) & PAGE_MASK);
-	kpte_flags = pte_val(*kpte); 
 	if (pgprot_val(prot) != pgprot_val(ref_prot)) { 
-		if ((kpte_flags & _PAGE_PSE) == 0) { 
+		if (!pte_huge(*kpte)) {
 			set_pte(kpte, pfn_pte(pfn, prot));
 		} else {
  			/*
 			 * split_large_page will take the reference for this
 			 * change_page_attr on the split page.
  			 */
-
 			struct page *split;
-			ref_prot2 = __pgprot(pgprot_val(pte_pgprot(*lookup_address(address))) & ~(1<<_PAGE_BIT_PSE));
-
+			ref_prot2 = pte_pgprot(pte_clrhuge(*kpte));
 			split = split_large_page(address, prot, ref_prot2);
 			if (!split)
 				return -ENOMEM;
-			set_pte(kpte,mk_pte(split, ref_prot2));
+			set_pte(kpte, mk_pte(split, ref_prot2));
 			kpte_page = split;
-		}	
+		}
 		page_private(kpte_page)++;
-	} else if ((kpte_flags & _PAGE_PSE) == 0) { 
+	} else if (!pte_huge(*kpte)) {
 		set_pte(kpte, pfn_pte(pfn, ref_prot));
 		BUG_ON(page_private(kpte_page) == 0);
 		page_private(kpte_page)--;
@@ -190,10 +186,12 @@ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
 		 * lowmem */
 		if (__pa(address) < KERNEL_TEXT_SIZE) {
 			unsigned long addr2;
-			pgprot_t prot2 = prot;
+			pgprot_t prot2;
 			addr2 = __START_KERNEL_map + __pa(address);
- 			pgprot_val(prot2) &= ~_PAGE_NX;
-			err = __change_page_attr(addr2, pfn, prot2, PAGE_KERNEL_EXEC);
+			/* Make sure the kernel mappings stay executable */
+			prot2 = pte_pgprot(pte_mkexec(pfn_pte(0, prot)));
+			err = __change_page_attr(addr2, pfn, prot2,
+						 PAGE_KERNEL_EXEC);
 		} 
 	} 	
 	up_write(&init_mm.mmap_sem); 
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 502fce65e96a..ca10701e7a90 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -21,6 +21,8 @@
 #include <asm/numa.h>
 #include <asm/e820.h>
 
+int acpi_numa __initdata;
+
 #if (defined(CONFIG_ACPI_HOTPLUG_MEMORY) || \
 	defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) \
 		&& !defined(CONFIG_MEMORY_HOTPLUG)