Merge samba.org:/scratch/anton/linux-2.5_ppc64

into samba.org:/scratch/anton/linux-2.5_work

Documentation/filesystems/ntfs.txt

@@ -247,6 +247,8 @@ ChangeLog
 
 Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
 
+2.0.25:
+	- Minor bugfixes in error code paths and small cleanups.
 2.0.24:
 	- Small internal cleanups.
 	- Support for sendfile system call. (Christoph Hellwig)

arch/i386/boot/setup.S

@@ -1005,9 +1005,14 @@ delay:
 	ret
 
 # Descriptor tables
+#
+# NOTE: if you think the GDT is large, you can make it smaller by just
+# defining the KERNEL_CS and KERNEL_DS entries and shifting the gdt
+# address down by GDT_ENTRY_KERNEL_CS*8. This puts bogus entries into
+# the GDT, but those wont be used so it's not a problem.
+#
 gdt:
-	.word	0, 0, 0, 0			# dummy
-	.word	0, 0, 0, 0			# unused
+	.fill GDT_ENTRY_KERNEL_CS,8,0
 
 	.word	0xFFFF				# 4Gb - (0x100000*0x1000 = 4Gb)
 	.word	0				# base address = 0

arch/i386/kernel/cpu/common.c

@@ -423,6 +423,7 @@ void __init cpu_init (void)
 {
 	int cpu = smp_processor_id();
 	struct tss_struct * t = init_tss + cpu;
+	struct thread_struct *thread = &current->thread;
 
 	if (test_and_set_bit(cpu, &cpu_initialized)) {
 		printk(KERN_WARNING "CPU#%d already initialized!\n", cpu);
@@ -447,9 +448,13 @@ void __init cpu_init (void)
 	 */
 	if (cpu) {
 		memcpy(cpu_gdt_table[cpu], cpu_gdt_table[0], GDT_SIZE);
-		cpu_gdt_descr[cpu].size = GDT_SIZE;
+		cpu_gdt_descr[cpu].size = GDT_SIZE - 1;
 		cpu_gdt_descr[cpu].address = (unsigned long)cpu_gdt_table[cpu];
 	}
+	/*
+	 * Set up the per-thread TLS descriptor cache:
+	 */
+	memcpy(thread->tls_array, cpu_gdt_table[cpu], GDT_ENTRY_TLS_MAX * 8);
 
 	__asm__ __volatile__("lgdt %0": "=m" (cpu_gdt_descr[cpu]));
 	__asm__ __volatile__("lidt %0": "=m" (idt_descr));
@@ -468,9 +473,9 @@ void __init cpu_init (void)
 		BUG();
 	enter_lazy_tlb(&init_mm, current, cpu);
 
-	t->esp0 = current->thread.esp0;
+	t->esp0 = thread->esp0;
 	set_tss_desc(cpu,t);
-	cpu_gdt_table[cpu][TSS_ENTRY].b &= 0xfffffdff;
+	cpu_gdt_table[cpu][GDT_ENTRY_TSS].b &= 0xfffffdff;
 	load_TR_desc();
 	load_LDT(&init_mm.context);
 

arch/i386/kernel/entry.S

@@ -753,6 +753,7 @@ ENTRY(sys_call_table)
 	.long sys_sched_setaffinity
 	.long sys_sched_getaffinity
 	.long sys_set_thread_area
+	.long sys_get_thread_area
 
 	.rept NR_syscalls-(.-sys_call_table)/4
 		.long sys_ni_syscall

arch/i386/kernel/head.S

@@ -239,12 +239,7 @@ is386:	movl $2,%ecx		# set MP
 	movl %eax,%es
 	movl %eax,%fs
 	movl %eax,%gs
-#ifdef CONFIG_SMP
-	movl $(__KERNEL_DS), %eax
-	movl %eax,%ss		# Reload the stack pointer (segment only)
-#else
-	lss stack_start,%esp	# Load processor stack
-#endif
+	movl %eax,%ss
 	xorl %eax,%eax
 	lldt %ax
 	cld			# gcc2 wants the direction flag cleared at all times
@@ -412,34 +407,40 @@ ENTRY(_stext)
 
 ALIGN
 /*
- * The Global Descriptor Table contains 20 quadwords, per-CPU.
+ * The Global Descriptor Table contains 28 quadwords, per-CPU.
  */
 ENTRY(cpu_gdt_table)
 	.quad 0x0000000000000000	/* NULL descriptor */
-	.quad 0x0000000000000000	/* TLS descriptor */
-	.quad 0x00cf9a000000ffff	/* 0x10 kernel 4GB code at 0x00000000 */
-	.quad 0x00cf92000000ffff	/* 0x18 kernel 4GB data at 0x00000000 */
-	.quad 0x00cffa000000ffff	/* 0x23 user   4GB code at 0x00000000 */
-	.quad 0x00cff2000000ffff	/* 0x2b user   4GB data at 0x00000000 */
-	.quad 0x0000000000000000	/* TSS descriptor */
-	.quad 0x0000000000000000	/* LDT descriptor */
+	.quad 0x0000000000000000	/* 0x0b reserved */
+	.quad 0x0000000000000000	/* 0x13 reserved */
+	.quad 0x0000000000000000	/* 0x1b reserved */
+	.quad 0x00cffa000000ffff	/* 0x23 user 4GB code at 0x00000000 */
+	.quad 0x00cff2000000ffff	/* 0x2b user 4GB data at 0x00000000 */
+	.quad 0x0000000000000000	/* 0x33 TLS entry 1 */
+	.quad 0x0000000000000000	/* 0x3b TLS entry 2 */
+	.quad 0x0000000000000000	/* 0x43 TLS entry 3 */
+	.quad 0x0000000000000000	/* 0x4b reserved */
+	.quad 0x0000000000000000	/* 0x53 reserved */
+	.quad 0x0000000000000000	/* 0x5b reserved */
+
+	.quad 0x00cf9a000000ffff	/* 0x60 kernel 4GB code at 0x00000000 */
+	.quad 0x00cf92000000ffff	/* 0x68 kernel 4GB data at 0x00000000 */
+	.quad 0x0000000000000000	/* 0x70 TSS descriptor */
+	.quad 0x0000000000000000	/* 0x78 LDT descriptor */
+
+	/* Segments used for calling PnP BIOS */
+	.quad 0x00c09a0000000000	/* 0x80 32-bit code */
+	.quad 0x00809a0000000000	/* 0x88 16-bit code */
+	.quad 0x0080920000000000	/* 0x90 16-bit data */
+	.quad 0x0080920000000000	/* 0x98 16-bit data */
+	.quad 0x0080920000000000	/* 0xa0 16-bit data */
 	/*
 	 * The APM segments have byte granularity and their bases
 	 * and limits are set at run time.
 	 */
-	.quad 0x0040920000000000	/* 0x40 APM set up for bad BIOS's */
-	.quad 0x00409a0000000000	/* 0x48 APM CS    code */
-	.quad 0x00009a0000000000	/* 0x50 APM CS 16 code (16 bit) */
-	.quad 0x0040920000000000	/* 0x58 APM DS    data */
-	/* Segments used for calling PnP BIOS */
-	.quad 0x00c09a0000000000	/* 0x60 32-bit code */
-	.quad 0x00809a0000000000	/* 0x68 16-bit code */
-	.quad 0x0080920000000000	/* 0x70 16-bit data */
-	.quad 0x0080920000000000	/* 0x78 16-bit data */
-	.quad 0x0080920000000000	/* 0x80 16-bit data */
-	.quad 0x0000000000000000	/* 0x88 not used */
-	.quad 0x0000000000000000	/* 0x90 not used */
-	.quad 0x0000000000000000	/* 0x98 not used */
+	.quad 0x00409a0000000000	/* 0xa8 APM CS    code */
+	.quad 0x00009a0000000000	/* 0xb0 APM CS 16 code (16 bit) */
+	.quad 0x0040920000000000	/* 0xb8 APM DS    data */
 
 #if CONFIG_SMP
 	.fill (NR_CPUS-1)*GDT_ENTRIES,8,0 /* other CPU's GDT */

arch/i386/kernel/ldt.c

@@ -170,7 +170,7 @@ static int write_ldt(void * ptr, unsigned long bytecount, int oldmode)
 	struct mm_struct * mm = current->mm;
 	__u32 entry_1, entry_2, *lp;
 	int error;
-	struct modify_ldt_ldt_s ldt_info;
+	struct user_desc ldt_info;
 
 	error = -EINVAL;
 	if (bytecount != sizeof(ldt_info))
@@ -200,32 +200,17 @@ static int write_ldt(void * ptr, unsigned long bytecount, int oldmode)
 
    	/* Allow LDTs to be cleared by the user. */
    	if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
-		if (oldmode ||
-		    (ldt_info.contents == 0		&&
-		     ldt_info.read_exec_only == 1	&&
-		     ldt_info.seg_32bit == 0		&&
-		     ldt_info.limit_in_pages == 0	&&
-		     ldt_info.seg_not_present == 1	&&
-		     ldt_info.useable == 0 )) {
+		if (oldmode || LDT_empty(&ldt_info)) {
 			entry_1 = 0;
 			entry_2 = 0;
 			goto install;
 		}
 	}
 
-	entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
-		  (ldt_info.limit & 0x0ffff);
-	entry_2 = (ldt_info.base_addr & 0xff000000) |
-		  ((ldt_info.base_addr & 0x00ff0000) >> 16) |
-		  (ldt_info.limit & 0xf0000) |
-		  ((ldt_info.read_exec_only ^ 1) << 9) |
-		  (ldt_info.contents << 10) |
-		  ((ldt_info.seg_not_present ^ 1) << 15) |
-		  (ldt_info.seg_32bit << 22) |
-		  (ldt_info.limit_in_pages << 23) |
-		  0x7000;
-	if (!oldmode)
-		entry_2 |= (ldt_info.useable << 20);
+	entry_1 = LDT_entry_a(&ldt_info);
+	entry_2 = LDT_entry_b(&ldt_info);
+	if (oldmode)
+		entry_2 &= ~(1 << 20);
 
 	/* Install the new entry ...  */
 install:

arch/i386/kernel/process.c

@@ -681,11 +681,8 @@ void __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 
 	/*
 	 * Load the per-thread Thread-Local Storage descriptor.
-	 *
-	 * NOTE: it's faster to do the two stores unconditionally
-	 * than to branch away.
 	 */
-	load_TLS_desc(next, cpu);
+	load_TLS(next, cpu);
 
 	/*
 	 * Save away %fs and %gs. No need to save %es and %ds, as
@@ -834,35 +831,114 @@ unsigned long get_wchan(struct task_struct *p)
 #undef first_sched
 
 /*
- * Set the Thread-Local Storage area:
+ * sys_alloc_thread_area: get a yet unused TLS descriptor index.
  */
-asmlinkage int sys_set_thread_area(unsigned long base, unsigned long flags)
+static int get_free_idx(void)
 {
 	struct thread_struct *t = &current->thread;
-	int writable = 0;
-	int cpu;
+	int idx;
 
-	/* do not allow unused flags */
-	if (flags & ~TLS_FLAGS_MASK)
+	for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++)
+		if (desc_empty(t->tls_array + idx))
+			return idx + GDT_ENTRY_TLS_MIN;
+	return -ESRCH;
+}
+
+/*
+ * Set a given TLS descriptor:
+ */
+asmlinkage int sys_set_thread_area(struct user_desc *u_info)
+{
+	struct thread_struct *t = &current->thread;
+	struct user_desc info;
+	struct desc_struct *desc;
+	int cpu, idx;
+
+	if (copy_from_user(&info, u_info, sizeof(info)))
+		return -EFAULT;
+	idx = info.entry_number;
+
+	/*
+	 * index -1 means the kernel should try to find and
+	 * allocate an empty descriptor:
+	 */
+	if (idx == -1) {
+		idx = get_free_idx();
+		if (idx < 0)
+			return idx;
+		if (put_user(idx, &u_info->entry_number))
+			return -EFAULT;
+	}
+
+	if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
 		return -EINVAL;
 
-	if (flags & TLS_FLAG_WRITABLE)
-		writable = 1;
+	desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN;
 
 	/*
 	 * We must not get preempted while modifying the TLS.
 	 */
 	cpu = get_cpu();
 
-        t->tls_desc.a = ((base & 0x0000ffff) << 16) | 0xffff;
-
-        t->tls_desc.b = (base & 0xff000000) | ((base & 0x00ff0000) >> 16) |
-				0xf0000 | (writable << 9) | (1 << 15) |
-					(1 << 22) | (1 << 23) | 0x7000;
+	if (LDT_empty(&info)) {
+		desc->a = 0;
+		desc->b = 0;
+	} else {
+		desc->a = LDT_entry_a(&info);
+		desc->b = LDT_entry_b(&info);
+	}
+	load_TLS(t, cpu);
 
-	load_TLS_desc(t, cpu);
 	put_cpu();
 
-	return TLS_ENTRY*8 + 3;
+	return 0;
+}
+
+/*
+ * Get the current Thread-Local Storage area:
+ */
+
+#define GET_BASE(desc) ( \
+	(((desc)->a >> 16) & 0x0000ffff) | \
+	(((desc)->b << 16) & 0x00ff0000) | \
+	( (desc)->b        & 0xff000000)   )
+
+#define GET_LIMIT(desc) ( \
+	((desc)->a & 0x0ffff) | \
+	 ((desc)->b & 0xf0000) )
+	
+#define GET_32BIT(desc)		(((desc)->b >> 23) & 1)
+#define GET_CONTENTS(desc)	(((desc)->b >> 10) & 3)
+#define GET_WRITABLE(desc)	(((desc)->b >>  9) & 1)
+#define GET_LIMIT_PAGES(desc)	(((desc)->b >> 23) & 1)
+#define GET_PRESENT(desc)	(((desc)->b >> 15) & 1)
+#define GET_USEABLE(desc)	(((desc)->b >> 20) & 1)
+
+asmlinkage int sys_get_thread_area(struct user_desc *u_info)
+{
+	struct user_desc info;
+	struct desc_struct *desc;
+	int idx;
+
+	if (get_user(idx, &u_info->entry_number))
+		return -EFAULT;
+	if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
+		return -EINVAL;
+
+	desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
+
+	info.entry_number = idx;
+	info.base_addr = GET_BASE(desc);
+	info.limit = GET_LIMIT(desc);
+	info.seg_32bit = GET_32BIT(desc);
+	info.contents = GET_CONTENTS(desc);
+	info.read_exec_only = !GET_WRITABLE(desc);
+	info.limit_in_pages = GET_LIMIT_PAGES(desc);
+	info.seg_not_present = !GET_PRESENT(desc);
+	info.useable = GET_USEABLE(desc);
+
+	if (copy_to_user(u_info, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
 }
 

arch/i386/kernel/suspend.c

@@ -207,7 +207,7 @@ void fix_processor_context(void)
 	struct tss_struct * t = init_tss + cpu;
 
 	set_tss_desc(cpu,t);	/* This just modifies memory; should not be neccessary. But... This is neccessary, because 386 hardware has concept of busy tsc or some similar stupidity. */
-        cpu_gdt_table[cpu][TSS_ENTRY].b &= 0xfffffdff;
+        cpu_gdt_table[cpu][GDT_ENTRY_TSS].b &= 0xfffffdff;
 
 	load_TR_desc();				/* This does ltr */
 	load_LDT(&current->mm->context);	/* This does lldt */

arch/ia64/Makefile

@@ -13,7 +13,7 @@ AWK := awk
 
 export AWK
 
-OBJCOPYFLAGS := --strip-all 
+OBJCOPYFLAGS := --strip-all
 LDFLAGS_vmlinux := -static -T arch/$(ARCH)/vmlinux.lds
 AFLAGS_KERNEL := -mconstant-gp
 EXTRA	=
@@ -26,7 +26,7 @@ CFLAGS_KERNEL := -mconstant-gp
 GCC_VERSION=$(shell $(CC) -v 2>&1 | fgrep 'gcc version' | cut -f3 -d' ' | cut -f1 -d'.')
 
 ifneq ($(GCC_VERSION),2)
-	CFLAGS += -frename-registers --param max-inline-insns=2000
+	CFLAGS += -frename-registers --param max-inline-insns=5000
 endif
 
 ifeq ($(CONFIG_ITANIUM_BSTEP_SPECIFIC),y)

arch/ia64/boot/Makefile

@@ -12,8 +12,10 @@ LINKFLAGS = -static -T bootloader.lds
 
 OBJECTS	= bootloader.o
 
-targets-$(CONFIG_IA64_HP_SIM) += bootloader
-targets-$(CONFIG_IA64_GENERIC) += bootloader
+targets-$(CONFIG_IA64_HP_SIM)	+= bootloader
+targets-$(CONFIG_IA64_GENERIC)	+= bootloader
+
+CFLAGS	:= $(CFLAGS) $(CFLAGS_KERNEL)
 
 all:	$(targets-y)
 

arch/ia64/config.in

@@ -64,12 +64,13 @@ if [ "$CONFIG_MCKINLEY" = "y" ]; then
 	fi
 fi
 
-if [ "$CONFIG_IA64_GENERIC" = "y" -o  "$CONFIG_IA64_DIG" = "y" -o "$CONFIG_IA64_HP_ZX1" = "y" ]; then
+if [ "$CONFIG_IA64_GENERIC" = "y" -o "$CONFIG_IA64_DIG" = "y" -o "$CONFIG_IA64_HP_ZX1" = "y" ];
+then
 	bool '  Enable IA-64 Machine Check Abort' CONFIG_IA64_MCA
 	define_bool CONFIG_PM y
 fi
 
-if [ "$CONFIG_IA64_SGI_SN1" = "y" -o  "$CONFIG_IA64_SGI_SN2" = "y" ]; then
+if [ "$CONFIG_IA64_SGI_SN1" = "y" -o "$CONFIG_IA64_SGI_SN2" = "y" ]; then
 	define_bool CONFIG_IA64_SGI_SN y
 	bool '  Enable extra debugging code' CONFIG_IA64_SGI_SN_DEBUG
 	bool '  Enable SGI Medusa Simulator Support' CONFIG_IA64_SGI_SN_SIM
@@ -99,21 +100,20 @@ tristate 'Kernel support for ELF binaries' CONFIG_BINFMT_ELF
 tristate 'Kernel support for MISC binaries' CONFIG_BINFMT_MISC
 
 if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  source drivers/acpi/Config.in
 
-source drivers/acpi/Config.in
+  bool 'PCI support' CONFIG_PCI
+  source drivers/pci/Config.in
 
-bool 'PCI support' CONFIG_PCI
-source drivers/pci/Config.in
-
-bool 'Support for hot-pluggable devices' CONFIG_HOTPLUG
-if [ "$CONFIG_HOTPLUG" = "y" ]; then
-   source drivers/pcmcia/Config.in
-else
-   define_bool CONFIG_PCMCIA n
-fi
-
-source drivers/parport/Config.in
+  bool 'Support for hot-pluggable devices' CONFIG_HOTPLUG
+  if [ "$CONFIG_HOTPLUG" = "y" ]; then
+     source drivers/hotplug/Config.in
+     source drivers/pcmcia/Config.in
+  else
+     define_bool CONFIG_PCMCIA n
+  fi
 
+  source drivers/parport/Config.in
 fi # !HP_SIM
 
 endmenu
@@ -123,39 +123,26 @@ if [ "$CONFIG_NET" = "y" ]; then
 fi
 
 if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  source drivers/mtd/Config.in
+  source drivers/pnp/Config.in
+  source drivers/block/Config.in
+  source drivers/ieee1394/Config.in
+  source drivers/message/i2o/Config.in
+  source drivers/md/Config.in
+  source drivers/message/fusion/Config.in
 
-source drivers/mtd/Config.in
-source drivers/pnp/Config.in
-source drivers/block/Config.in
-source drivers/ieee1394/Config.in
-source drivers/message/i2o/Config.in
-source drivers/md/Config.in
-source drivers/message/fusion/Config.in
-
-mainmenu_option next_comment
-comment 'ATA/ATAPI/MFM/RLL support'
-
-tristate 'ATA/ATAPI/MFM/RLL support' CONFIG_IDE
-
-if [ "$CONFIG_IDE" != "n" ]; then
-  source drivers/ide/Config.in
-else
-  define_bool CONFIG_BLK_DEV_HD n
-fi
-endmenu
+  mainmenu_option next_comment
+  comment 'ATA/ATAPI/MFM/RLL support'
 
-else # ! HP_SIM
-mainmenu_option next_comment
-comment 'Block devices'
-tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
-dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
+  tristate 'ATA/ATAPI/MFM/RLL support' CONFIG_IDE
 
-tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
-if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
-   int '  Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
+  if [ "$CONFIG_IDE" != "n" ]; then
+    source drivers/ide/Config.in
+  else
+    define_bool CONFIG_BLK_DEV_HD n
+  fi
+  endmenu
 fi
-endmenu
-fi # !HP_SIM
 
 mainmenu_option next_comment
 comment 'SCSI support'
@@ -168,80 +155,83 @@ fi
 endmenu
 
 if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  if [ "$CONFIG_NET" = "y" ]; then
+    mainmenu_option next_comment
+    comment 'Network device support'
+
+    bool 'Network device support' CONFIG_NETDEVICES
+    if [ "$CONFIG_NETDEVICES" = "y" ]; then
+      source drivers/net/Config.in
+    fi
+    endmenu
+  fi
+  source net/ax25/Config.in
+  source drivers/isdn/Config.in
 
-if [ "$CONFIG_NET" = "y" ]; then
   mainmenu_option next_comment
-  comment 'Network device support'
+  comment 'CD-ROM drivers (not for SCSI or IDE/ATAPI drives)'
 
-  bool 'Network device support' CONFIG_NETDEVICES
-  if [ "$CONFIG_NETDEVICES" = "y" ]; then
-    source drivers/net/Config.in
+  bool 'Support non-SCSI/IDE/ATAPI CDROM drives' CONFIG_CD_NO_IDESCSI
+  if [ "$CONFIG_CD_NO_IDESCSI" != "n" ]; then
+    source drivers/cdrom/Config.in
   fi
   endmenu
-fi
 
-source net/ax25/Config.in
+  #
+  # input before char - char/joystick depends on it. As does USB.
+  #
+  source drivers/input/Config.in
+  source drivers/char/Config.in
 
-source drivers/isdn/Config.in
+  #source drivers/misc/Config.in
 
-mainmenu_option next_comment
-comment 'CD-ROM drivers (not for SCSI or IDE/ATAPI drives)'
+  source drivers/media/Config.in
+else # HP_SIM
 
-bool 'Support non-SCSI/IDE/ATAPI CDROM drives' CONFIG_CD_NO_IDESCSI
-if [ "$CONFIG_CD_NO_IDESCSI" != "n" ]; then
-  source drivers/cdrom/Config.in
-fi
-endmenu
-
-fi # !HP_SIM
-
-#
-# input before char - char/joystick depends on it. As does USB.
-#
-source drivers/input/Config.in
-source drivers/char/Config.in
-
-#source drivers/misc/Config.in
-
-source drivers/media/Config.in
-
-source fs/Config.in
-
-if [ "$CONFIG_VT" = "y" ]; then
   mainmenu_option next_comment
-  comment 'Console drivers'
-  bool 'VGA text console' CONFIG_VGA_CONSOLE
-  source drivers/video/Config.in
-  if [ "$CONFIG_FB" = "y" ]; then
-    define_bool CONFIG_PCI_CONSOLE y
+  comment 'Block devices'
+  tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
+  dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
+
+  tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
+  if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
+    int '  Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
   fi
   endmenu
-fi
-
-if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+fi # HP_SIM
 
-mainmenu_option next_comment
-comment 'Sound'
-
-tristate 'Sound card support' CONFIG_SOUND
-if [ "$CONFIG_SOUND" != "n" ]; then
-  source sound/Config.in
-fi
-endmenu
+source fs/Config.in
 
-source drivers/usb/Config.in
+if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  if [ "$CONFIG_VT" = "y" ]; then
+    mainmenu_option next_comment
+    comment 'Console drivers'
+    bool 'VGA text console' CONFIG_VGA_CONSOLE
+    source drivers/video/Config.in
+    if [ "$CONFIG_FB" = "y" ]; then
+      define_bool CONFIG_PCI_CONSOLE y
+    fi
+    endmenu
+  fi
 
-source lib/Config.in
+  mainmenu_option next_comment
+  comment 'Sound'
 
-source net/bluetooth/Config.in
+  tristate 'Sound card support' CONFIG_SOUND
+  if [ "$CONFIG_SOUND" != "n" ]; then
+    source sound/Config.in
+  fi
+  endmenu
 
+  source drivers/usb/Config.in
+  source lib/Config.in
+  source net/bluetooth/Config.in
 fi # !HP_SIM
 
 if [ "$CONFIG_IA64_HP_SIM" != "n" -o "$CONFIG_IA64_GENERIC" != "n" ]; then
-  source arch/ia64/hp/Config.in
+  source arch/ia64/hp/sim/Config.in
 fi
 
-
 mainmenu_option next_comment
 comment 'Kernel hacking'
 
@@ -255,7 +245,14 @@ if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
    bool '  Disable VHPT' CONFIG_DISABLE_VHPT
    bool '  Magic SysRq key' CONFIG_MAGIC_SYSRQ
 
-   bool '  Early printk support (requires VGA!)' CONFIG_IA64_EARLY_PRINTK
+   bool '  Early printk support' CONFIG_IA64_EARLY_PRINTK
+   if [ "$CONFIG_IA64_EARLY_PRINTK" != "n" ]; then
+      bool '    Early printk on MMIO serial port' CONFIG_IA64_EARLY_PRINTK_UART
+      if [ "$CONFIG_IA64_EARLY_PRINTK_UART" != "n" ]; then
+         hex '      UART MMIO base address' CONFIG_IA64_EARLY_PRINTK_UART_BASE ff5e0000
+      fi
+      bool '    Early printk on VGA' CONFIG_IA64_EARLY_PRINTK_VGA
+   fi
    bool '  Debug memory allocations' CONFIG_DEBUG_SLAB
    bool '  Spinlock debugging' CONFIG_DEBUG_SPINLOCK
    bool '  Turn on compare-and-exchange bug checking (slow!)' CONFIG_IA64_DEBUG_CMPXCHG

arch/ia64/hp/sim/hpsim_console.c

@@ -30,12 +30,12 @@ static void simcons_write (struct console *, const char *, unsigned);
 static kdev_t simcons_console_device (struct console *);
 
 struct console hpsim_cons = {
-	name:		"simcons",
-	write:		simcons_write,
-	device:		simcons_console_device,
-	setup:		simcons_init,
-	flags:		CON_PRINTBUFFER,
-	index:		-1,
+	.name =		"simcons",
+	.write =	simcons_write,
+	.device =	simcons_console_device,
+	.setup =	simcons_init,
+	.flags =	CON_PRINTBUFFER,
+	.index =	-1,
 };
 
 static int

arch/ia64/hp/sim/hpsim_irq.c

@@ -22,14 +22,14 @@ hpsim_irq_noop (unsigned int irq)
 }
 
 static struct hw_interrupt_type irq_type_hp_sim = {
-	typename:	"hpsim",
-	startup:	hpsim_irq_startup,
-	shutdown:	hpsim_irq_noop,
-	enable:		hpsim_irq_noop,
-	disable:	hpsim_irq_noop,
-	ack:		hpsim_irq_noop,
-	end:		hpsim_irq_noop,
-	set_affinity:	(void (*)(unsigned int, unsigned long)) hpsim_irq_noop,
+	.typename =	"hpsim",
+	.startup =	hpsim_irq_startup,
+	.shutdown =	hpsim_irq_noop,
+	.enable =	hpsim_irq_noop,
+	.disable =	hpsim_irq_noop,
+	.ack =		hpsim_irq_noop,
+	.end =		hpsim_irq_noop,
+	.set_affinity =	(void (*)(unsigned int, unsigned long)) hpsim_irq_noop,
 };
 
 void __init

arch/ia64/hp/sim/hpsim_setup.c

 /*
  * Platform dependent support for HP simulator.
  *
- * Copyright (C) 1998, 1999 Hewlett-Packard Co
- * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
  */
+#include <linux/console.h>
 #include <linux/init.h>
+#include <linux/kdev_t.h>
 #include <linux/kernel.h>
+#include <linux/major.h>
 #include <linux/param.h>
+#include <linux/root_dev.h>
 #include <linux/string.h>
 #include <linux/types.h>
-#include <linux/kdev_t.h>
-#include <linux/console.h>
-#include <linux/root_dev.h>
 
 #include <asm/delay.h>
 #include <asm/irq.h>
@@ -55,5 +56,5 @@ hpsim_setup (char **cmdline_p)
 {
 	ROOT_DEV = Root_SDA1;		/* default to first SCSI drive */
 
-	register_console (&hpsim_cons);
+	register_console(&hpsim_cons);
 }

arch/ia64/hp/sim/simscsi.c

@@ -62,7 +62,9 @@ struct disk_stat {
 
 extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
 
-static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+static int desc[16] = {
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+};
 
 static struct queue_entry {
 	Scsi_Cmnd *sc;
@@ -148,9 +150,9 @@ simscsi_biosparam (Disk *disk, struct block_device *n, int ip[])
 {
 	int size = disk->capacity;
 
-	ip[0] = 64;
-	ip[1] = 32;
-	ip[2] = size >> 11;
+	ip[0] = 64;		/* heads */
+	ip[1] = 32;		/* sectors */
+	ip[2] = size >> 11;	/* cylinders */
 	return 0;
 }
 
@@ -229,6 +231,29 @@ simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
 		simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
 }
 
+static size_t
+simscsi_get_disk_size (int fd)
+{
+	struct disk_stat stat;
+	size_t bit, sectors = 0;
+	struct disk_req req;
+	char buf[512];
+
+	/*
+	 * This is a bit kludgey: the simulator doesn't provide a direct way of determining
+	 * the disk size, so we do a binary search, assuming a maximum disk size of 4GB.
+	 */
+	for (bit = (4UL << 30)/512; bit != 0; bit >>= 1) {
+		req.addr = __pa(&buf);
+		req.len = sizeof(buf);
+		ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);
+		stat.fd = fd;
+		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+		if (stat.count == sizeof(buf))
+			sectors |= bit;
+	}
+	return sectors - 1;	/* return last valid sector number */
+}
 
 static void
 simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
@@ -247,6 +272,7 @@ int
 simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
 {
 	char fname[MAX_ROOT_LEN+16];
+	size_t disk_size;
 	char *buf;
 #if DEBUG_SIMSCSI
 	register long sp asm ("sp");
@@ -258,15 +284,15 @@ simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
 
 	sc->result = DID_BAD_TARGET << 16;
 	sc->scsi_done = done;
-	if (sc->target <= 7 && sc->lun == 0) {
+	if (sc->target <= 15 && sc->lun == 0) {
 		switch (sc->cmnd[0]) {
 		      case INQUIRY:
 			if (sc->request_bufflen < 35) {
 				break;
 			}
 			sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
-			desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
-						     0, 0, SSC_OPEN);
+			desc[sc->target] = ia64_ssc(__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+						    0, 0, SSC_OPEN);
 			if (desc[sc->target] < 0) {
 				/* disk doesn't exist... */
 				break;
@@ -319,11 +345,13 @@ simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
 			}
 			buf = sc->request_buffer;
 
+			disk_size = simscsi_get_disk_size(desc[sc->target]);
+
 			/* pretend to be a 1GB disk (partition table contains real stuff): */
-			buf[0] = 0x00;
-			buf[1] = 0x1f;
-			buf[2] = 0xff;
-			buf[3] = 0xff;
+			buf[0] = (disk_size >> 24) & 0xff;
+			buf[1] = (disk_size >> 16) & 0xff;
+			buf[2] = (disk_size >>  8) & 0xff;
+			buf[3] = (disk_size >>  0) & 0xff;
 			/* set block size of 512 bytes: */
 			buf[4] = 0;
 			buf[5] = 0;

arch/ia64/hp/sim/simserial.c

@@ -13,6 +13,7 @@
  *
  * 02/04/00 D. Mosberger	Merged in serial.c bug fixes in rs_close().
  * 02/25/00 D. Mosberger	Synced up with 2.3.99pre-5 version of serial.c.
+ * 07/30/02 D. Mosberger	Replace sti()/cli() with explicit spinlocks & local irq masking
  */
 
 #include <linux/config.h>
@@ -31,6 +32,7 @@
 #include <linux/serialP.h>
 
 #include <asm/irq.h>
+#include <asm/hw_irq.h>
 #include <asm/uaccess.h>
 
 #ifdef CONFIG_KDB
@@ -61,6 +63,7 @@ extern void ia64_ssc_connect_irq (long intr, long irq);
 
 static char *serial_name = "SimSerial driver";
 static char *serial_version = "0.6";
+static spinlock_t serial_lock = SPIN_LOCK_UNLOCKED;
 
 /*
  * This has been extracted from asm/serial.h. We need one eventually but
@@ -232,14 +235,14 @@ static void rs_put_char(struct tty_struct *tty, unsigned char ch)
 
 	if (!tty || !info->xmit.buf) return;
 
-	save_flags(flags); cli();
+	spin_lock_irqsave(&serial_lock, flags);
 	if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
-		restore_flags(flags);
+		spin_unlock_irqrestore(&serial_lock, flags);
 		return;
 	}
 	info->xmit.buf[info->xmit.head] = ch;
 	info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 }
 
 static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
@@ -247,7 +250,7 @@ static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
 	int count;
 	unsigned long flags;
 
-	save_flags(flags); cli();
+	spin_lock_irqsave(&serial_lock, flags);
 
 	if (info->x_char) {
 		char c = info->x_char;
@@ -290,7 +293,7 @@ static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
 		info->xmit.tail += count;
 	}
 out:
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 }
 
 static void rs_flush_chars(struct tty_struct *tty)
@@ -314,7 +317,6 @@ static int rs_write(struct tty_struct * tty, int from_user,
 
 	if (!tty || !info->xmit.buf || !tmp_buf) return 0;
 
-	save_flags(flags);
 	if (from_user) {
 		down(&tmp_buf_sem);
 		while (1) {
@@ -331,21 +333,26 @@ static int rs_write(struct tty_struct * tty, int from_user,
 					ret = -EFAULT;
 				break;
 			}
-			cli();
-			c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-			if (c1 < c)
-				c = c1;
-			memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
-			info->xmit.head = ((info->xmit.head + c) &
-					   (SERIAL_XMIT_SIZE-1));
-			restore_flags(flags);
+
+			spin_lock_irqsave(&serial_lock, flags);
+			{
+				c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail,
+						       SERIAL_XMIT_SIZE);
+				if (c1 < c)
+					c = c1;
+				memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
+				info->xmit.head = ((info->xmit.head + c) &
+						   (SERIAL_XMIT_SIZE-1));
+			}
+			spin_unlock_irqrestore(&serial_lock, flags);
+
 			buf += c;
 			count -= c;
 			ret += c;
 		}
 		up(&tmp_buf_sem);
 	} else {
-		cli();
+		spin_lock_irqsave(&serial_lock, flags);
 		while (1) {
 			c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
 			if (count < c)
@@ -360,7 +367,7 @@ static int rs_write(struct tty_struct * tty, int from_user,
 			count -= c;
 			ret += c;
 		}
-		restore_flags(flags);
+		spin_unlock_irqrestore(&serial_lock, flags);
 	}
 	/*
 	 * Hey, we transmit directly from here in our case
@@ -391,9 +398,9 @@ static void rs_flush_buffer(struct tty_struct *tty)
 	struct async_struct *info = (struct async_struct *)tty->driver_data;
 	unsigned long flags;
 
-	save_flags(flags); cli();
+	spin_lock_irqsave(&serial_lock, flags);
 	info->xmit.head = info->xmit.tail = 0;
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 
 	wake_up_interruptible(&tty->write_wait);
 
@@ -566,44 +573,45 @@ static void shutdown(struct async_struct * info)
 	       state->irq);
 #endif
 
-	save_flags(flags); cli(); /* Disable interrupts */
+	spin_lock_irqsave(&serial_lock, flags);
+	{
+		/*
+		 * First unlink the serial port from the IRQ chain...
+		 */
+		if (info->next_port)
+			info->next_port->prev_port = info->prev_port;
+		if (info->prev_port)
+			info->prev_port->next_port = info->next_port;
+		else
+			IRQ_ports[state->irq] = info->next_port;
 
-	/*
-	 * First unlink the serial port from the IRQ chain...
-	 */
-	if (info->next_port)
-		info->next_port->prev_port = info->prev_port;
-	if (info->prev_port)
-		info->prev_port->next_port = info->next_port;
-	else
-		IRQ_ports[state->irq] = info->next_port;
+		/*
+		 * Free the IRQ, if necessary
+		 */
+		if (state->irq && (!IRQ_ports[state->irq] ||
+				   !IRQ_ports[state->irq]->next_port)) {
+			if (IRQ_ports[state->irq]) {
+				free_irq(state->irq, NULL);
+				retval = request_irq(state->irq, rs_interrupt_single,
+						     IRQ_T(info), "serial", NULL);
+
+				if (retval)
+					printk("serial shutdown: request_irq: error %d"
+					       "  Couldn't reacquire IRQ.\n", retval);
+			} else
+				free_irq(state->irq, NULL);
+		}
 
-	/*
-	 * Free the IRQ, if necessary
-	 */
-	if (state->irq && (!IRQ_ports[state->irq] ||
-			  !IRQ_ports[state->irq]->next_port)) {
-		if (IRQ_ports[state->irq]) {
-			free_irq(state->irq, NULL);
-			retval = request_irq(state->irq, rs_interrupt_single,
-					     IRQ_T(info), "serial", NULL);
+		if (info->xmit.buf) {
+			free_page((unsigned long) info->xmit.buf);
+			info->xmit.buf = 0;
+		}
 
-			if (retval)
-				printk("serial shutdown: request_irq: error %d"
-				       "  Couldn't reacquire IRQ.\n", retval);
-		} else
-			free_irq(state->irq, NULL);
-	}
+		if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
 
-	if (info->xmit.buf) {
-		free_page((unsigned long) info->xmit.buf);
-		info->xmit.buf = 0;
+		info->flags &= ~ASYNC_INITIALIZED;
 	}
-
-	if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
-
-	info->flags &= ~ASYNC_INITIALIZED;
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 }
 
 /*
@@ -626,14 +634,13 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
 
 	state = info->state;
 
-	save_flags(flags); cli();
-
+	spin_lock_irqsave(&serial_lock, flags);
 	if (tty_hung_up_p(filp)) {
 #ifdef SIMSERIAL_DEBUG
 		printk("rs_close: hung_up\n");
 #endif
 		MOD_DEC_USE_COUNT;
-		restore_flags(flags);
+		spin_unlock_irqrestore(&serial_lock, flags);
 		return;
 	}
 #ifdef SIMSERIAL_DEBUG
@@ -658,11 +665,11 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
 	}
 	if (state->count) {
 		MOD_DEC_USE_COUNT;
-		restore_flags(flags);
+		spin_unlock_irqrestore(&serial_lock, flags);
 		return;
 	}
 	info->flags |= ASYNC_CLOSING;
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 
 	/*
 	 * Now we wait for the transmit buffer to clear; and we notify
@@ -770,7 +777,7 @@ startup(struct async_struct *info)
 	if (!page)
 		return -ENOMEM;
 
-	save_flags(flags); cli();
+	spin_lock_irqsave(&serial_lock, flags);
 
 	if (info->flags & ASYNC_INITIALIZED) {
 		free_page(page);
@@ -851,11 +858,11 @@ startup(struct async_struct *info)
 	}
 
 	info->flags |= ASYNC_INITIALIZED;
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 	return 0;
 
 errout:
-	restore_flags(flags);
+	spin_unlock_irqrestore(&serial_lock, flags);
 	return retval;
 }
 

arch/ia64/hp/zx1/hpzx1_machvec.c

 #define MACHVEC_PLATFORM_NAME	hpzx1
 #include <asm/machvec_init.h>
-#define MACHVEC_PLATFORM_NAME	hpzx1
-#include <asm/machvec_init.h>

arch/ia64/ia32/binfmt_elf32.c

@@ -67,7 +67,7 @@ ia32_install_shared_page (struct vm_area_struct *vma, unsigned long address, int
 }
 
 static struct vm_operations_struct ia32_shared_page_vm_ops = {
-	nopage:	ia32_install_shared_page
+	.nopage =ia32_install_shared_page
 };
 
 void

arch/ia64/ia32/ia32_ioctl.c

@@ -30,6 +30,8 @@
 #include <asm/ia32.h>
 
 #include <../drivers/char/drm/drm.h>
+#include <../drivers/char/drm/mga_drm.h>
+#include <../drivers/char/drm/i810_drm.h>
 
 
 #define IOCTL_NR(a)	((a) & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT))

arch/ia64/kernel/efi.c

@@ -125,9 +125,79 @@ efi_gettimeofday (struct timeval *tv)
 	tv->tv_usec = tm.nanosecond / 1000;
 }
 
+static int
+is_available_memory (efi_memory_desc_t *md)
+{
+	if (!(md->attribute & EFI_MEMORY_WB))
+		return 0;
+
+	switch (md->type) {
+	      case EFI_LOADER_CODE:
+	      case EFI_LOADER_DATA:
+	      case EFI_BOOT_SERVICES_CODE:
+	      case EFI_BOOT_SERVICES_DATA:
+	      case EFI_CONVENTIONAL_MEMORY:
+		return 1;
+	}
+	return 0;
+}
+
+/*
+ * Trim descriptor MD so its starts at address START_ADDR.  If the descriptor covers
+ * memory that is normally available to the kernel, issue a warning that some memory
+ * is being ignored.
+ */
+static void
+trim_bottom (efi_memory_desc_t *md, u64 start_addr)
+{
+	u64 num_skipped_pages;
+
+	if (md->phys_addr >= start_addr || !md->num_pages)
+		return;
+
+	num_skipped_pages = (start_addr - md->phys_addr) >> EFI_PAGE_SHIFT;
+	if (num_skipped_pages > md->num_pages)
+		num_skipped_pages = md->num_pages;
+
+	if (is_available_memory(md))
+		printk(KERN_NOTICE "efi.%s: ignoring %luKB of memory at 0x%lx due to granule hole "
+		       "at 0x%lx\n", __FUNCTION__,
+		       (num_skipped_pages << EFI_PAGE_SHIFT) >> 10,
+		       md->phys_addr, start_addr - IA64_GRANULE_SIZE);
+	/*
+	 * NOTE: Don't set md->phys_addr to START_ADDR because that could cause the memory
+	 * descriptor list to become unsorted.  In such a case, md->num_pages will be
+	 * zero, so the Right Thing will happen.
+	 */
+	md->phys_addr += num_skipped_pages << EFI_PAGE_SHIFT;
+	md->num_pages -= num_skipped_pages;
+}
+
+static void
+trim_top (efi_memory_desc_t *md, u64 end_addr)
+{
+	u64 num_dropped_pages, md_end_addr;
+
+	md_end_addr = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
+
+	if (md_end_addr <= end_addr || !md->num_pages)
+		return;
+
+	num_dropped_pages = (md_end_addr - end_addr) >> EFI_PAGE_SHIFT;
+	if (num_dropped_pages > md->num_pages)
+		num_dropped_pages = md->num_pages;
+
+	if (is_available_memory(md))
+		printk(KERN_NOTICE "efi.%s: ignoring %luKB of memory at 0x%lx due to granule hole "
+		       "at 0x%lx\n", __FUNCTION__,
+		       (num_dropped_pages << EFI_PAGE_SHIFT) >> 10,
+		       md->phys_addr, end_addr);
+	md->num_pages -= num_dropped_pages;
+}
+
 /*
- * Walks the EFI memory map and calls CALLBACK once for each EFI
- * memory descriptor that has memory that is available for OS use.
+ * Walks the EFI memory map and calls CALLBACK once for each EFI memory descriptor that
+ * has memory that is available for OS use.
  */
 void
 efi_memmap_walk (efi_freemem_callback_t callback, void *arg)
@@ -137,9 +207,9 @@ efi_memmap_walk (efi_freemem_callback_t callback, void *arg)
 		u64 start;
 		u64 end;
 	} prev, curr;
-	void *efi_map_start, *efi_map_end, *p;
-	efi_memory_desc_t *md;
-	u64 efi_desc_size, start, end;
+	void *efi_map_start, *efi_map_end, *p, *q;
+	efi_memory_desc_t *md, *check_md;
+	u64 efi_desc_size, start, end, granule_addr, first_non_wb_addr = 0;
 
 	efi_map_start = __va(ia64_boot_param->efi_memmap);
 	efi_map_end   = efi_map_start + ia64_boot_param->efi_memmap_size;
@@ -147,24 +217,56 @@ efi_memmap_walk (efi_freemem_callback_t callback, void *arg)
 
 	for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
 		md = p;
-		switch (md->type) {
-		      case EFI_LOADER_CODE:
-		      case EFI_LOADER_DATA:
-		      case EFI_BOOT_SERVICES_CODE:
-		      case EFI_BOOT_SERVICES_DATA:
-		      case EFI_CONVENTIONAL_MEMORY:
-			if (!(md->attribute & EFI_MEMORY_WB))
-				continue;
+
+		/* skip over non-WB memory descriptors; that's all we're interested in... */
+		if (!(md->attribute & EFI_MEMORY_WB))
+			continue;
+
+		if (md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) > first_non_wb_addr) {
+			/*
+			 * Search for the next run of contiguous WB memory.  Start search
+			 * at first granule boundary covered by md.
+			 */
+			granule_addr = ((md->phys_addr + IA64_GRANULE_SIZE - 1)
+					& -IA64_GRANULE_SIZE);
+			first_non_wb_addr = granule_addr;
+			for (q = p; q < efi_map_end; q += efi_desc_size) {
+				check_md = q;
+
+				if (check_md->attribute & EFI_MEMORY_WB)
+					trim_bottom(md, granule_addr);
+
+				if (check_md->phys_addr < granule_addr)
+					continue;
+
+				if (!(check_md->attribute & EFI_MEMORY_WB))
+					break;	/* hit a non-WB region; stop search */
+
+				if (check_md->phys_addr != first_non_wb_addr)
+					break;	/* hit a memory hole; stop search */
+
+				first_non_wb_addr += check_md->num_pages << EFI_PAGE_SHIFT;
+			}
+			/* round it down to the previous granule-boundary: */
+			first_non_wb_addr &= -IA64_GRANULE_SIZE;
+
+			if (!(first_non_wb_addr > granule_addr))
+				continue;	/* couldn't find enough contiguous memory */
+		}
+
+		/* BUG_ON((md->phys_addr >> IA64_GRANULE_SHIFT) < first_non_wb_addr); */
+
+		trim_top(md, first_non_wb_addr);
+
+		if (is_available_memory(md)) {
 			if (md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) > mem_limit) {
 				if (md->phys_addr > mem_limit)
 					continue;
 				md->num_pages = (mem_limit - md->phys_addr) >> EFI_PAGE_SHIFT;
 			}
-			if (md->num_pages == 0) {
-				printk("efi_memmap_walk: ignoring empty region at 0x%lx",
-				       md->phys_addr);
+
+			if (md->num_pages == 0)
 				continue;
-			}
 
 			curr.start = PAGE_OFFSET + md->phys_addr;
 			curr.end   = curr.start + (md->num_pages << EFI_PAGE_SHIFT);
@@ -187,10 +289,6 @@ efi_memmap_walk (efi_freemem_callback_t callback, void *arg)
 					prev = curr;
 				}
 			}
-			break;
-
-		      default:
-			continue;
 		}
 	}
 	if (prev_valid) {
@@ -268,8 +366,9 @@ efi_map_pal_code (void)
 		 */
 		psr = ia64_clear_ic();
 		ia64_itr(0x1, IA64_TR_PALCODE, vaddr & mask,
-			 pte_val(pfn_pte(md->phys_addr >> PAGE_SHIFT, PAGE_KERNEL)), IA64_GRANULE_SHIFT);
-		ia64_set_psr(psr);
+			 pte_val(pfn_pte(md->phys_addr >> PAGE_SHIFT, PAGE_KERNEL)),
+			 IA64_GRANULE_SHIFT);
+		ia64_set_psr(psr);		/* restore psr */
 		ia64_srlz_i();
 	}
 }
@@ -347,6 +446,9 @@ efi_init (void)
 		} else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) {
 			efi.sal_systab = __va(config_tables[i].table);
 			printk(" SALsystab=0x%lx", config_tables[i].table);
+		} else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
+			efi.hcdp = __va(config_tables[i].table);
+			printk(" HCDP=0x%lx", config_tables[i].table);
 		}
 	}
 	printk("\n");
@@ -376,7 +478,7 @@ efi_init (void)
 			md = p;
 			printk("mem%02u: type=%u, attr=0x%lx, range=[0x%016lx-0x%016lx) (%luMB)\n",
 			       i, md->type, md->attribute, md->phys_addr,
-			       md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1,
+			       md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
 			       md->num_pages >> (20 - EFI_PAGE_SHIFT));
 		}
 	}

arch/ia64/kernel/entry.S

@@ -175,6 +175,7 @@ GLOBAL_ENTRY(ia64_switch_to)
 (p6)	srlz.d
 	ld8 sp=[r21]			// load kernel stack pointer of new task
 	mov IA64_KR(CURRENT)=r20	// update "current" application register
+	mov r8=r13			// return pointer to previously running task
 	mov r13=in0			// set "current" pointer
 	;;
 	DO_LOAD_SWITCH_STACK

arch/ia64/kernel/ia64_ksyms.c

@@ -88,12 +88,6 @@ EXPORT_SYMBOL(ia64_cpu_to_sapicid);
 #include <asm/smplock.h>
 EXPORT_SYMBOL(kernel_flag);
 
-/* #include <asm/system.h> */
-EXPORT_SYMBOL(__global_sti);
-EXPORT_SYMBOL(__global_cli);
-EXPORT_SYMBOL(__global_save_flags);
-EXPORT_SYMBOL(__global_restore_flags);
-
 #else /* !CONFIG_SMP */
 
 EXPORT_SYMBOL(__flush_tlb_all);

arch/ia64/kernel/init_task.c

@@ -34,8 +34,8 @@ union init_thread {
 	} s;
 	unsigned long stack[KERNEL_STACK_SIZE/sizeof (unsigned long)];
 } init_thread_union __attribute__((section(".data.init_task"))) = {{
-	task: INIT_TASK(init_thread_union.s.task),
-	thread_info: INIT_THREAD_INFO(init_thread_union.s.thread_info)
+	.task =		INIT_TASK(init_thread_union.s.task),
+	.thread_info =	INIT_THREAD_INFO(init_thread_union.s.thread_info)
 }};
 
 asm (".global init_task; init_task = init_thread_union");

arch/ia64/kernel/iosapic.c

@@ -88,7 +88,7 @@ static struct {
 
 static struct iosapic_irq {
 	char *addr;			/* base address of IOSAPIC */
-	unsigned char base_irq;		/* first irq assigned to this IOSAPIC */
+	unsigned int base_irq;		/* first irq assigned to this IOSAPIC */
 	char pin;			/* IOSAPIC pin (-1 => not an IOSAPIC irq) */
 	unsigned char dmode	: 3;	/* delivery mode (see iosapic.h) */
 	unsigned char polarity	: 1;	/* interrupt polarity (see iosapic.h) */
@@ -97,9 +97,9 @@ static struct iosapic_irq {
 
 static struct iosapic {
 	char *addr;			/* base address of IOSAPIC */
-	unsigned char	pcat_compat;	/* 8259 compatibility flag */
-	unsigned char 	base_irq;	/* first irq assigned to this IOSAPIC */
+	unsigned int 	base_irq;	/* first irq assigned to this IOSAPIC */
 	unsigned short 	max_pin;	/* max input pin supported in this IOSAPIC */
+	unsigned char	pcat_compat;	/* 8259 compatibility flag */
 } iosapic_lists[256] __initdata;
 
 static int num_iosapic = 0;
@@ -160,6 +160,10 @@ set_rte (unsigned int vector, unsigned long dest)
 	int pin;
 	char redir;
 
+#ifdef DEBUG_IRQ_ROUTING
+	printk(KERN_DEBUG "set_rte: routing vector 0x%02x to 0x%lx\n", vector, dest);
+#endif
+
 	pin = iosapic_irq[vector].pin;
 	if (pin < 0)
 		return;		/* not an IOSAPIC interrupt */
@@ -322,14 +326,14 @@ iosapic_end_level_irq (unsigned int irq)
 #define iosapic_ack_level_irq		nop
 
 struct hw_interrupt_type irq_type_iosapic_level = {
-	typename:	"IO-SAPIC-level",
-	startup:	iosapic_startup_level_irq,
-	shutdown:	iosapic_shutdown_level_irq,
-	enable:		iosapic_enable_level_irq,
-	disable:	iosapic_disable_level_irq,
-	ack:		iosapic_ack_level_irq,
-	end:		iosapic_end_level_irq,
-	set_affinity:	iosapic_set_affinity
+	.typename =	"IO-SAPIC-level",
+	.startup =	iosapic_startup_level_irq,
+	.shutdown =	iosapic_shutdown_level_irq,
+	.enable =	iosapic_enable_level_irq,
+	.disable =	iosapic_disable_level_irq,
+	.ack =		iosapic_ack_level_irq,
+	.end =		iosapic_end_level_irq,
+	.set_affinity =	iosapic_set_affinity
 };
 
 /*
@@ -366,14 +370,14 @@ iosapic_ack_edge_irq (unsigned int irq)
 #define iosapic_end_edge_irq		nop
 
 struct hw_interrupt_type irq_type_iosapic_edge = {
-	typename:	"IO-SAPIC-edge",
-	startup:	iosapic_startup_edge_irq,
-	shutdown:	iosapic_disable_edge_irq,
-	enable:		iosapic_enable_edge_irq,
-	disable:	iosapic_disable_edge_irq,
-	ack:		iosapic_ack_edge_irq,
-	end:		iosapic_end_edge_irq,
-	set_affinity:	iosapic_set_affinity
+	.typename =	"IO-SAPIC-edge",
+	.startup =	iosapic_startup_edge_irq,
+	.shutdown =	iosapic_disable_edge_irq,
+	.enable =	iosapic_enable_edge_irq,
+	.disable =	iosapic_disable_edge_irq,
+	.ack =		iosapic_ack_edge_irq,
+	.end =		iosapic_end_edge_irq,
+	.set_affinity =	iosapic_set_affinity
 };
 
 unsigned int
@@ -406,7 +410,7 @@ iosapic_reassign_vector (int vector)
 	    || iosapic_irq[vector].polarity || iosapic_irq[vector].trigger)
 	{
 		new_vector = ia64_alloc_irq();
-		printk("Reassigning Vector 0x%x to 0x%x\n", vector, new_vector);
+		printk("Reassigning vector 0x%x to 0x%x\n", vector, new_vector);
 		memcpy (&iosapic_irq[new_vector], &iosapic_irq[vector],
 			sizeof(struct iosapic_irq));
 		memset (&iosapic_irq[vector], 0, sizeof(struct iosapic_irq));
@@ -422,6 +426,7 @@ register_irq (u32 global_vector, int vector, int pin, unsigned char delivery,
 	irq_desc_t *idesc;
 	struct hw_interrupt_type *irq_type;
 
+	gsi_to_vector(global_vector) = vector;
 	iosapic_irq[vector].pin	= pin;
 	iosapic_irq[vector].polarity = polarity ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW;
 	iosapic_irq[vector].dmode    = delivery;
@@ -640,7 +645,7 @@ iosapic_init_pci_irq (void)
 	unsigned int irq;
 	char *addr;
 
-	if (0 != acpi_get_prt(&pci_irq.route, &pci_irq.num_routes))
+	if (acpi_get_prt(&pci_irq.route, &pci_irq.num_routes))
 		return;
 
 	for (i = 0; i < pci_irq.num_routes; i++) {
@@ -679,11 +684,10 @@ iosapic_init_pci_irq (void)
 		       pci_irq.route[i].bus, pci_irq.route[i].pci_id>>16, pci_irq.route[i].pin,
 		       iosapic_irq[vector].base_irq + iosapic_irq[vector].pin, vector);
 #endif
-
 		/*
-		 * Forget not to program the IOSAPIC RTE per ACPI _PRT
+		 * NOTE: The IOSAPIC RTE will be programmed in iosapic_pci_fixup().  It
+		 * needs to be done there to ensure PCI hotplug works right.
 		 */
-		set_rte(vector, (ia64_get_lid() >> 16) & 0xffff);
 	}
 }
 
@@ -757,10 +761,11 @@ iosapic_pci_fixup (int phase)
 				if (!(smp_int_redirect & SMP_IRQ_REDIRECTION)) {
 					static int cpu_index = 0;
 
-					set_rte(vector, cpu_physical_id(cpu_index) & 0xffff);
+					while (!cpu_online(cpu_index))
+						if (++cpu_index >= NR_CPUS)
+							cpu_index = 0;
 
-					for (cpu_index++; !cpu_online(cpu_index % NR_CPUS); cpu_index++);
-                                        cpu_index %= NR_CPUS;
+					set_rte(vector, cpu_physical_id(cpu_index) & 0xffff);
 				} else {
 					/*
 					 * Direct the interrupt vector to the current cpu,

arch/ia64/kernel/irq_ia64.c

@@ -36,6 +36,10 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 
+#ifdef CONFIG_PERFMON
+# include <asm/perfmon.h>
+#endif
+
 #define IRQ_DEBUG	0
 
 /* default base addr of IPI table */
@@ -50,6 +54,11 @@ __u8 isa_irq_to_vector_map[16] = {
 	0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21
 };
 
+/*
+ * GSI to IA-64 vector translation table.
+ */
+__u8 gsi_to_vector_map[255];
+
 int
 ia64_alloc_irq (void)
 {
@@ -144,9 +153,9 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
 extern void handle_IPI (int irq, void *dev_id, struct pt_regs *regs);
 
 static struct irqaction ipi_irqaction = {
-	handler:	handle_IPI,
-	flags:		SA_INTERRUPT,
-	name:		"IPI"
+	.handler =	handle_IPI,
+	.flags =	SA_INTERRUPT,
+	.name =		"IPI"
 };
 #endif
 
@@ -172,6 +181,9 @@ init_IRQ (void)
 	register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
 #ifdef CONFIG_SMP
 	register_percpu_irq(IA64_IPI_VECTOR, &ipi_irqaction);
+#endif
+#ifdef CONFIG_PERFMON
+	perfmon_init_percpu();
 #endif
 	platform_irq_init();
 }

arch/ia64/kernel/irq_lsapic.c

@@ -27,12 +27,12 @@ lsapic_noop (unsigned int irq)
 }
 
 struct hw_interrupt_type irq_type_ia64_lsapic = {
-	typename:	"LSAPIC",
-	startup:	lsapic_noop_startup,
-	shutdown:	lsapic_noop,
-	enable:		lsapic_noop,
-	disable:	lsapic_noop,
-	ack:		lsapic_noop,
-	end:		lsapic_noop,
-	set_affinity:	(void (*)(unsigned int, unsigned long)) lsapic_noop
+	.typename =	"LSAPIC",
+	.startup =	lsapic_noop_startup,
+	.shutdown =	lsapic_noop,
+	.enable =	lsapic_noop,
+	.disable =	lsapic_noop,
+	.ack =		lsapic_noop,
+	.end =		lsapic_noop,
+	.set_affinity =	(void (*)(unsigned int, unsigned long)) lsapic_noop
 };

arch/ia64/kernel/machvec.c

@@ -11,13 +11,16 @@
 struct ia64_machine_vector ia64_mv;
 
 /*
- * Most platforms use this routine for mapping page frame addresses
- * into a memory map index.
+ * Most platforms use this routine for mapping page frame addresses into a memory map
+ * index.
+ *
+ * Note: we can't use __pa() because map_nr_dense(X) MUST map to something >= max_mapnr if
+ * X is outside the identity mapped kernel space.
  */
 unsigned long
 map_nr_dense (unsigned long addr)
 {
-	return MAP_NR_DENSE(addr);
+	return (addr - PAGE_OFFSET) >> PAGE_SHIFT;
 }
 
 static struct ia64_machine_vector *

arch/ia64/kernel/mca.c

@@ -82,27 +82,27 @@ extern void			ia64_slave_init_handler (void);
 extern struct hw_interrupt_type	irq_type_iosapic_level;
 
 static struct irqaction cmci_irqaction = {
-	handler:    ia64_mca_cmc_int_handler,
-	flags:      SA_INTERRUPT,
-	name:       "cmc_hndlr"
+	.handler =	ia64_mca_cmc_int_handler,
+	.flags =	SA_INTERRUPT,
+	.name =		"cmc_hndlr"
 };
 
 static struct irqaction mca_rdzv_irqaction = {
-	handler:    ia64_mca_rendez_int_handler,
-	flags:      SA_INTERRUPT,
-	name:       "mca_rdzv"
+	.handler =	ia64_mca_rendez_int_handler,
+	.flags =	SA_INTERRUPT,
+	.name =		"mca_rdzv"
 };
 
 static struct irqaction mca_wkup_irqaction = {
-	handler:    ia64_mca_wakeup_int_handler,
-	flags:      SA_INTERRUPT,
-	name:       "mca_wkup"
+	.handler =	ia64_mca_wakeup_int_handler,
+	.flags =	SA_INTERRUPT,
+	.name =		"mca_wkup"
 };
 
 static struct irqaction mca_cpe_irqaction = {
-	handler:    ia64_mca_cpe_int_handler,
-	flags:      SA_INTERRUPT,
-	name:       "cpe_hndlr"
+	.handler =	ia64_mca_cpe_int_handler,
+	.flags =	SA_INTERRUPT,
+	.name =		"cpe_hndlr"
 };
 
 /*
@@ -626,9 +626,12 @@ ia64_mca_wakeup_all(void)
 void
 ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *ptregs)
 {
-	int flags, cpu = 0;
+	unsigned long flags;
+	int cpu = 0;
+
 	/* Mask all interrupts */
-	save_and_cli(flags);
+#warning XXX fix me: this used to be: save_and_cli(flags);
+	local_irq_save(flags);
 
 #ifdef CONFIG_SMP
 	cpu = cpu_logical_id(hard_smp_processor_id());
@@ -646,7 +649,7 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *ptregs)
 	ia64_mca_wakeup_ipi_wait();
 
 	/* Enable all interrupts */
-	restore_flags(flags);
+	local_irq_restore(flags);
 }
 
 

arch/ia64/kernel/mca_asm.S

@@ -684,9 +684,9 @@ ia64_os_mca_tlb_error_check:
 	movl	r3=SAL_GET_STATE_INFO;;
 	DATA_VA_TO_PA(r7);;		// convert to physical address
 	ld8	r8=[r7],8;;		// get pdesc function pointer
-	DATA_VA_TO_PA(r8)		// convert to physical address
+	dep	r8=0,r8,61,3;;		// convert SAL VA to PA
 	ld8	r1=[r7];;		// set new (ia64_sal) gp
-	DATA_VA_TO_PA(r1)		// convert to physical address
+	dep	r1=0,r1,61,3;;		// convert SAL VA to PA
 	mov	b6=r8
 
 	alloc	r5=ar.pfs,8,0,8,0;;	// allocate stack frame for SAL call

arch/ia64/kernel/pci.c

@@ -165,7 +165,7 @@ struct pci_ops pci_sal_ops = {
  */
 
 struct pci_bus *
-pcibios_scan_root(int seg, int bus)
+pcibios_scan_root(int bus)
 {
 	struct list_head *list = NULL;
 	struct pci_bus *pci_bus = NULL;
@@ -174,12 +174,12 @@ pcibios_scan_root(int seg, int bus)
 		pci_bus = pci_bus_b(list);
 		if (pci_bus->number == bus) {
 			/* Already scanned */
-			printk("PCI: Bus (%02x:%02x) already probed\n", seg, bus);
+			printk("PCI: Bus (%02x) already probed\n", bus);
 			return pci_bus;
 		}
 	}
 
-	printk("PCI: Probing PCI hardware on bus (%02x:%02x)\n", seg, bus);
+	printk("PCI: Probing PCI hardware on bus (%02x)\n", bus);
 
 	return pci_scan_bus(bus, pci_root_ops, NULL);
 }
@@ -265,12 +265,37 @@ pcibios_fixup_pbus_ranges (struct pci_bus * bus, struct pbus_set_ranges_data * r
 int
 pcibios_enable_device (struct pci_dev *dev)
 {
+	u16 cmd, old_cmd;
+	int idx;
+	struct resource *r;
+
 	if (!dev)
 		return -EINVAL;
 
-	/* Not needed, since we enable all devices at startup.  */
+	pci_read_config_word(dev, PCI_COMMAND, &cmd);
+	old_cmd = cmd;
+	for (idx=0; idx<6; idx++) {
+		r = &dev->resource[idx];
+		if (!r->start && r->end) {
+			printk(KERN_ERR
+			       "PCI: Device %s not available because of resource collisions\n",
+			       dev->slot_name);
+			return -EINVAL;
+		}
+		if (r->flags & IORESOURCE_IO)
+			cmd |= PCI_COMMAND_IO;
+		if (r->flags & IORESOURCE_MEM)
+			cmd |= PCI_COMMAND_MEMORY;
+	}
+	if (dev->resource[PCI_ROM_RESOURCE].start)
+		cmd |= PCI_COMMAND_MEMORY;
+	if (cmd != old_cmd) {
+		printk("PCI: Enabling device %s (%04x -> %04x)\n", dev->slot_name, old_cmd, cmd);
+		pci_write_config_word(dev, PCI_COMMAND, cmd);
+	}
 
 	printk(KERN_INFO "PCI: Found IRQ %d for device %s\n", dev->irq, dev->slot_name);
+
 	return 0;
 }
 

arch/ia64/kernel/perfmon.c

@@ -106,6 +106,12 @@
 
 #define PFM_REG_RETFLAG_SET(flags, val)	do { flags &= ~PFM_REG_RETFL_MASK; flags |= (val); } while(0)
 
+#ifdef CONFIG_SMP
+#define cpu_is_online(i) (cpu_online_map & (1UL << i))
+#else
+#define cpu_is_online(i)        (i==0)
+#endif
+
 /*
  * debugging
  */
@@ -277,8 +283,8 @@ typedef struct {
 typedef struct {
 	pfm_pmu_reg_type_t	type;
 	int			pm_pos;
-	int			(*read_check)(struct task_struct *task, unsigned int cnum, unsigned long *val);
-	int			(*write_check)(struct task_struct *task, unsigned int cnum, unsigned long *val);
+	int			(*read_check)(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
+	int			(*write_check)(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
 	unsigned long		dep_pmd[4];
 	unsigned long		dep_pmc[4];
 } pfm_reg_desc_t;
@@ -396,7 +402,7 @@ static unsigned long reset_pmcs[IA64_NUM_PMC_REGS];	/* contains PAL reset values
 static void pfm_vm_close(struct vm_area_struct * area);
 
 static struct vm_operations_struct pfm_vm_ops={
-	close: pfm_vm_close
+	.close = pfm_vm_close
 };
 
 /*
@@ -902,8 +908,8 @@ pfx_is_sane(struct task_struct *task, pfarg_context_t *pfx)
 		/*
 		 * and it must be a valid CPU
 		 */
-		cpu = ffs(pfx->ctx_cpu_mask);
-		if (!cpu_online(cpu)) {
+		cpu = ffz(~pfx->ctx_cpu_mask);
+		if (cpu_is_online(cpu) == 0) {
 			DBprintk(("CPU%d is not online\n", cpu));
 			return -EINVAL;
 		}
@@ -925,11 +931,12 @@ pfx_is_sane(struct task_struct *task, pfarg_context_t *pfx)
 			DBprintk(("must have notify_pid when blocking for [%d]\n", task->pid));
 			return -EINVAL;
 		}
-
+#if 0
 		if ((ctx_flags & PFM_FL_NOTIFY_BLOCK) && pfx->ctx_notify_pid == task->pid) {
 			DBprintk(("cannot notify self when blocking for [%d]\n", task->pid));
 			return -EINVAL;
 		}
+#endif
 	}
 	/* probably more to add here */
 
@@ -968,7 +975,7 @@ pfm_context_create(struct task_struct *task, pfm_context_t *ctx, void *req, int
 	if (ctx_flags & PFM_FL_SYSTEM_WIDE) {
 
 		/* at this point, we know there is at least one bit set */
-		cpu = ffs(tmp.ctx_cpu_mask) - 1;
+		cpu = ffz(~tmp.ctx_cpu_mask);
 
 		DBprintk(("requesting CPU%d currently on CPU%d\n",cpu, smp_processor_id()));
 
@@ -1280,7 +1287,7 @@ pfm_write_pmcs(struct task_struct *task, pfm_context_t *ctx, void *arg, int coun
 		/*
 		 * execute write checker, if any
 		 */
-		if (PMC_WR_FUNC(cnum)) ret = PMC_WR_FUNC(cnum)(task, cnum, &tmp.reg_value);
+		if (PMC_WR_FUNC(cnum)) ret = PMC_WR_FUNC(cnum)(task, cnum, &tmp.reg_value, regs);
 abort_mission:
 		if (ret == -EINVAL) reg_retval = PFM_REG_RETFL_EINVAL;
 
@@ -1371,7 +1378,7 @@ pfm_write_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int coun
 		/*
 		 * execute write checker, if any
 		 */
-		if (PMD_WR_FUNC(cnum)) ret = PMD_WR_FUNC(cnum)(task, cnum, &tmp.reg_value);
+		if (PMD_WR_FUNC(cnum)) ret = PMD_WR_FUNC(cnum)(task, cnum, &tmp.reg_value, regs);
 abort_mission:
 		if (ret == -EINVAL) reg_retval = PFM_REG_RETFL_EINVAL;
 
@@ -1394,6 +1401,8 @@ pfm_write_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int coun
 
 		/* keep track of what we use */
 		CTX_USED_PMD(ctx, pmu_conf.pmd_desc[(cnum)].dep_pmd[0]);
+		/* mark this register as used as well */
+		CTX_USED_PMD(ctx, RDEP(cnum));
 
 		/* writes to unimplemented part is ignored, so this is safe */
 		ia64_set_pmd(cnum, tmp.reg_value & pmu_conf.perf_ovfl_val);
@@ -1438,7 +1447,7 @@ pfm_read_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int count
 	DBprintk(("ctx_last_cpu=%d for [%d]\n", atomic_read(&ctx->ctx_last_cpu), task->pid));
 
 	for (i = 0; i < count; i++, req++) {
-		unsigned long reg_val = ~0UL, ctx_val = ~0UL;
+		unsigned long ctx_val = ~0UL;
 
 		if (copy_from_user(&tmp, req, sizeof(tmp))) return -EFAULT;
 
@@ -1462,7 +1471,7 @@ pfm_read_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int count
 		 */
 		if (atomic_read(&ctx->ctx_last_cpu) == smp_processor_id()){
 			ia64_srlz_d();
-			val = reg_val = ia64_get_pmd(cnum);
+			val = ia64_get_pmd(cnum);
 			DBprintk(("reading pmd[%u]=0x%lx from hw\n", cnum, val));
 		} else {
 #ifdef CONFIG_SMP
@@ -1484,7 +1493,7 @@ pfm_read_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int count
 			}
 #endif
 			/* context has been saved */
-			val = reg_val = th->pmd[cnum];
+			val = th->pmd[cnum];
 		}
 		if (PMD_IS_COUNTING(cnum)) {
 			/*
@@ -1493,9 +1502,7 @@ pfm_read_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int count
 
 			val &= pmu_conf.perf_ovfl_val;
 			val += ctx_val = ctx->ctx_soft_pmds[cnum].val;
-		} else {
-			val = reg_val = ia64_get_pmd(cnum);
-		}
+		} 
 
 		tmp.reg_value = val;
 
@@ -1503,14 +1510,13 @@ pfm_read_pmds(struct task_struct *task, pfm_context_t *ctx, void *arg, int count
 		 * execute read checker, if any
 		 */
 		if (PMD_RD_FUNC(cnum)) {
-			ret = PMD_RD_FUNC(cnum)(task, cnum, &tmp.reg_value);
+			ret = PMD_RD_FUNC(cnum)(task, cnum, &tmp.reg_value, regs);
 		}
 
 		PFM_REG_RETFLAG_SET(tmp.reg_flags, ret);
 
-		DBprintk(("read pmd[%u] ret=%d soft_pmd=0x%lx reg=0x%lx pmc=0x%lx\n", 
-					cnum, ret, ctx_val, reg_val, 
-					ia64_get_pmc(cnum)));
+		DBprintk(("read pmd[%u] ret=%d value=0x%lx pmc=0x%lx\n", 
+					cnum, ret, val, ia64_get_pmc(cnum)));
 
 		if (copy_to_user(req, &tmp, sizeof(tmp))) return -EFAULT;
 	}
@@ -1553,15 +1559,11 @@ pfm_use_debug_registers(struct task_struct *task)
 	 */
 	if (ctx && ctx->ctx_fl_using_dbreg == 1) return -1;
 
-	/*
-	 * XXX: not pretty
-	 */
 	LOCK_PFS();
 
 	/*
-	 * We only allow the use of debug registers when there is no system
-	 * wide monitoring 
-	 * XXX: we could relax this by 
+	 * We cannot allow setting breakpoints when system wide monitoring
+	 * sessions are using the debug registers.
 	 */
 	if (pfm_sessions.pfs_sys_use_dbregs> 0)
 		ret = -1;
@@ -1921,7 +1923,6 @@ typedef union {
 	dbr_mask_reg_t dbr;
 } dbreg_t;
 
-
 static int
 pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, struct pt_regs *regs)
 {
@@ -1963,8 +1964,8 @@ pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, stru
 	if (ctx->ctx_fl_system) {
 		/* we mark ourselves as owner  of the debug registers */
 		ctx->ctx_fl_using_dbreg = 1;
-	} else {
-       		if (ctx->ctx_fl_using_dbreg == 0) {
+		DBprintk(("system-wide setting fl_using_dbreg for [%d]\n", task->pid));
+	} else if (first_time) {
 			ret= -EBUSY;
 			if ((thread->flags & IA64_THREAD_DBG_VALID) != 0) {
 				DBprintk(("debug registers already in use for [%d]\n", task->pid));
@@ -1973,6 +1974,7 @@ pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, stru
 			/* we mark ourselves as owner  of the debug registers */
 			ctx->ctx_fl_using_dbreg = 1;
 
+			DBprintk(("setting fl_using_dbreg for [%d]\n", task->pid));
 			/* 
 			 * Given debug registers cannot be used for both debugging 
 			 * and performance monitoring at the same time, we reuse
@@ -1980,20 +1982,27 @@ pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, stru
 			 */
 			memset(task->thread.dbr, 0, sizeof(task->thread.dbr));
 			memset(task->thread.ibr, 0, sizeof(task->thread.ibr));
+	}
 
-			/*
-			 * clear hardware registers to make sure we don't
-			 * pick up stale state
-			 */
-			for (i=0; i < pmu_conf.num_ibrs; i++) {
-				ia64_set_ibr(i, 0UL);
-			}
-			ia64_srlz_i();
-			for (i=0; i < pmu_conf.num_dbrs; i++) {
-				ia64_set_dbr(i, 0UL);
-			}
-			ia64_srlz_d();
+	if (first_time) {
+		DBprintk(("[%d] clearing ibrs,dbrs\n", task->pid));
+		/*
+	 	 * clear hardware registers to make sure we don't
+	 	 * pick up stale state. 
+		 *
+		 * for a system wide session, we do not use
+		 * thread.dbr, thread.ibr because this process
+		 * never leaves the current CPU and the state
+		 * is shared by all processes running on it
+	 	 */
+		for (i=0; i < pmu_conf.num_ibrs; i++) {
+			ia64_set_ibr(i, 0UL);
 		}
+		ia64_srlz_i();
+		for (i=0; i < pmu_conf.num_dbrs; i++) {
+			ia64_set_dbr(i, 0UL);
+		}
+		ia64_srlz_d();
 	}
 
 	ret = -EFAULT;
@@ -2361,9 +2370,9 @@ sys_perfmonctl (pid_t pid, int cmd, void *arg, int count, long arg5, long arg6,
 {
 	struct pt_regs *regs = (struct pt_regs *)&stack;
 	struct task_struct *task = current;
-	pfm_context_t *ctx = task->thread.pfm_context;
+	pfm_context_t *ctx;
 	size_t sz;
-	int ret = -ESRCH, narg;
+	int ret, narg;
 
 	/* 
 	 * reject any call if perfmon was disabled at initialization time
@@ -2393,6 +2402,8 @@ sys_perfmonctl (pid_t pid, int cmd, void *arg, int count, long arg5, long arg6,
 
 		if (pid != current->pid) {
 
+			ret = -ESRCH;
+
 			read_lock(&tasklist_lock);
 
 			task = find_task_by_pid(pid);
@@ -2407,10 +2418,11 @@ sys_perfmonctl (pid_t pid, int cmd, void *arg, int count, long arg5, long arg6,
 				ret = check_task_state(task);
 				if (ret != 0) goto abort_call;
 			}
-			ctx = task->thread.pfm_context;
 		}
 	} 
 
+	ctx = task->thread.pfm_context;
+
 	if (PFM_CMD_USE_CTX(cmd)) {
 		ret = -EINVAL;
 	       if (ctx == NULL) {
@@ -2953,11 +2965,6 @@ perfmon_interrupt (int irq, void *arg, struct pt_regs *regs)
 static int
 perfmon_proc_info(char *page)
 {
-#ifdef CONFIG_SMP
-#define cpu_is_online(i) (cpu_online_map & (1UL << i))
-#else
-#define cpu_is_online(i)        1
-#endif
 	char *p = page;
 	int i;
 
@@ -4118,9 +4125,9 @@ pfm_cleanup_notifiers(struct task_struct *task)
 }
 
 static struct irqaction perfmon_irqaction = {
-	handler:	perfmon_interrupt,
-	flags:		SA_INTERRUPT,
-	name:		"perfmon"
+	.handler =	perfmon_interrupt,
+	.flags =	SA_INTERRUPT,
+	.name =		"perfmon"
 };
 
 
@@ -4150,11 +4157,6 @@ perfmon_init (void)
 	pal_perf_mon_info_u_t pm_info;
 	s64 status;
 
-	register_percpu_irq(IA64_PERFMON_VECTOR, &perfmon_irqaction);
-
-	ia64_set_pmv(IA64_PERFMON_VECTOR);
-	ia64_srlz_d();
-
 	pmu_conf.pfm_is_disabled = 1;
 
 	printk("perfmon: version %u.%u (sampling format v%u.%u) IRQ %u\n", 
@@ -4232,6 +4234,9 @@ __initcall(perfmon_init);
 void
 perfmon_init_percpu (void)
 {
+	if (smp_processor_id() == 0)
+		register_percpu_irq(IA64_PERFMON_VECTOR, &perfmon_irqaction);
+
 	ia64_set_pmv(IA64_PERFMON_VECTOR);
 	ia64_srlz_d();
 }

arch/ia64/kernel/perfmon_itanium.h

+/*
+ * This file contains the Itanium PMU register description tables
+ * and pmc checker used by perfmon.c.
+ *
+ * Copyright (C) 2002  Hewlett Packard Co
+ *               Stephane Eranian <eranian@hpl.hp.com>
+ */
+
+#define RDEP(x)	(1UL<<(x))
+
+#ifndef CONFIG_ITANIUM
+#error "This file is only valid when CONFIG_ITANIUM is defined"
+#endif
+
+static int pfm_ita_pmc_check(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
+static int pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, struct pt_regs *regs);
+
+static pfm_reg_desc_t pmc_desc[256]={
+/* pmc0  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc1  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc2  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc3  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc4  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(4),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc5  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(5),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc6  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(6),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc7  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(7),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc8  */ { PFM_REG_CONFIG, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc9  */ { PFM_REG_CONFIG, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc10 */ { PFM_REG_MONITOR, 6, NULL, NULL, {RDEP(0)|RDEP(1),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc11 */ { PFM_REG_MONITOR, 6, NULL, pfm_ita_pmc_check, {RDEP(2)|RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc12 */ { PFM_REG_MONITOR, 6, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc13 */ { PFM_REG_CONFIG, 0, NULL, pfm_ita_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+	    { PFM_REG_NONE, 0, NULL, NULL, {0,}, {0,}}, /* end marker */
+};
+
+static pfm_reg_desc_t pmd_desc[256]={
+/* pmd0  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(1),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
+/* pmd1  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(0),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
+/* pmd2  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+/* pmd3  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(2)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+/* pmd4  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}},
+/* pmd5  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}},
+/* pmd6  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}},
+/* pmd7  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}},
+/* pmd8  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd9  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd10 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd11 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd12 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd13 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd14 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd15 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd16 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd17 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(2)|RDEP(3),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+	    { PFM_REG_NONE, 0, NULL, NULL, {0,}, {0,}}, /* end marker */
+};
+
+static int
+pfm_ita_pmc_check(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs)
+{
+	pfm_context_t *ctx = task->thread.pfm_context;
+	int ret;
+
+	/*
+	 * we must clear the (instruction) debug registers if pmc13.ta bit is cleared
+	 * before they are written (fl_using_dbreg==0) to avoid picking up stale information. 
+	 */
+	if (cnum == 13 && ((*val & 0x1) == 0UL) && ctx->ctx_fl_using_dbreg == 0) {
+
+		/* don't mix debug with perfmon */
+		if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
+
+		/* 
+		 * a count of 0 will mark the debug registers as in use and also
+		 * ensure that they are properly cleared.
+		 */
+		ret = pfm_write_ibr_dbr(1, task, NULL, 0, regs);
+		if (ret) return ret;
+	}
+
+	/*
+	 * we must clear the (data) debug registers if pmc11.pt bit is cleared
+	 * before they are written (fl_using_dbreg==0) to avoid picking up stale information. 
+	 */
+	if (cnum == 11 && ((*val >> 28)& 0x1) == 0 && ctx->ctx_fl_using_dbreg == 0) {
+
+		/* don't mix debug with perfmon */
+		if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
+
+		/* 
+		 * a count of 0 will mark the debug registers as in use and also
+		 * ensure that they are properly cleared.
+		 */
+		ret = pfm_write_ibr_dbr(0, task, NULL, 0, regs);
+		if (ret) return ret;
+	}
+	return 0;
+}
+

arch/ia64/kernel/perfmon_mckinley.h

+/*
+ * This file contains the McKinley PMU register description tables
+ * and pmc checker used by perfmon.c.
+ *
+ * Copyright (C) 2002  Hewlett Packard Co
+ *               Stephane Eranian <eranian@hpl.hp.com>
+ */
+
+#define RDEP(x)	(1UL<<(x))
+
+#ifndef CONFIG_MCKINLEY
+#error "This file is only valid when CONFIG_MCKINLEY is defined"
+#endif
+
+static int pfm_mck_pmc_check(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
+static int pfm_write_ibr_dbr(int mode, struct task_struct *task, void *arg, int count, struct pt_regs *regs);
+
+static pfm_reg_desc_t pmc_desc[256]={
+/* pmc0  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc1  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc2  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc3  */ { PFM_REG_CONTROL, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc4  */ { PFM_REG_COUNTING, 6, NULL, pfm_mck_pmc_check, {RDEP(4),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc5  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(5),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc6  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(6),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc7  */ { PFM_REG_COUNTING, 6, NULL, NULL, {RDEP(7),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc8  */ { PFM_REG_CONFIG, 0, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc9  */ { PFM_REG_CONFIG, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc10 */ { PFM_REG_MONITOR, 4, NULL, NULL, {RDEP(0)|RDEP(1),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc11 */ { PFM_REG_MONITOR, 6, NULL, NULL, {RDEP(2)|RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc12 */ { PFM_REG_MONITOR, 6, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc13 */ { PFM_REG_CONFIG, 0, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc14 */ { PFM_REG_CONFIG, 0, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+/* pmc15 */ { PFM_REG_CONFIG, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
+	    { PFM_REG_NONE, 0, NULL, NULL, {0,}, {0,}}, /* end marker */
+};
+
+static pfm_reg_desc_t pmd_desc[256]={
+/* pmd0  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(1),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
+/* pmd1  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(0),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
+/* pmd2  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+/* pmd3  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(2)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+/* pmd4  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}},
+/* pmd5  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}},
+/* pmd6  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}},
+/* pmd7  */ { PFM_REG_COUNTING, 0, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}},
+/* pmd8  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd9  */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd10 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd11 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd12 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd13 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd14 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd15 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd16 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
+/* pmd17 */ { PFM_REG_BUFFER, 0, NULL, NULL, {RDEP(2)|RDEP(3),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
+	    { PFM_REG_NONE, 0, NULL, NULL, {0,}, {0,}}, /* end marker */
+};
+
+static int
+pfm_mck_pmc_check(struct task_struct *task, unsigned int cnum, unsigned long *val, struct pt_regs *regs)
+{
+	struct thread_struct *th = &task->thread;
+	pfm_context_t *ctx = task->thread.pfm_context;
+	int ret = 0, check_case1 = 0;
+	unsigned long val8 = 0, val14 = 0, val13 = 0;
+
+	/*
+	 * we must clear the debug registers if any pmc13.ena_dbrpX bit is enabled 
+	 * before they are written (fl_using_dbreg==0) to avoid picking up stale information. 
+	 */
+	if (cnum == 13 && (*val & (0xfUL << 45)) && ctx->ctx_fl_using_dbreg == 0) {
+
+		/* don't mix debug with perfmon */
+		if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
+
+		/* 
+		 * a count of 0 will mark the debug registers as in use and also
+		 * ensure that they are properly cleared.
+		 */
+		ret = pfm_write_ibr_dbr(1, task, NULL, 0, regs);
+		if (ret) return ret;
+	}
+	/* 
+	 * we must clear the (instruction) debug registers if any pmc14.ibrpX bit is enabled 
+	 * before they are (fl_using_dbreg==0) to avoid picking up stale information. 
+	 */
+	if (cnum == 14 && ((*val & 0x2222) != 0x2222) && ctx->ctx_fl_using_dbreg == 0) {
+
+		/* don't mix debug with perfmon */
+		if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
+
+		/* 
+		 * a count of 0 will mark the debug registers as in use and also
+		 * ensure that they are properly cleared.
+		 */
+		ret = pfm_write_ibr_dbr(0, task, NULL, 0, regs);
+		if (ret) return ret;
+
+	}
+
+	switch(cnum) {
+		case  4: *val |= 1UL << 23; /* force power enable bit */
+			 break;
+		case  8: val8 = *val;
+			 val13 = th->pmc[13];
+			 val14 = th->pmc[14];
+			 check_case1 = 1;
+			 break;
+		case 13: val8  = th->pmc[8];
+			 val13 = *val;
+			 val14 = th->pmc[14];
+			 check_case1 = 1;
+			 break;
+		case 14: val8  = th->pmc[13];
+			 val13 = th->pmc[13];
+			 val14 = *val;
+			 check_case1 = 1;
+			 break;
+	}
+	/* check illegal configuration which can produce inconsistencies in tagging
+	 * i-side events in L1D and L2 caches
+	 */
+	if (check_case1) {
+		ret =   ((val13 >> 45) & 0xf) == 0 
+		   && ((val8 & 0x1) == 0)
+		   && ((((val14>>1) & 0x3) == 0x2 || ((val14>>1) & 0x3) == 0x0)
+		       ||(((val14>>4) & 0x3) == 0x2 || ((val14>>4) & 0x3) == 0x0));
+
+		if (ret) printk("perfmon: failure check_case1\n");
+	}
+
+	return ret ? -EINVAL : 0;
+}

arch/ia64/kernel/process.c

@@ -325,6 +325,11 @@ copy_thread (int nr, unsigned long clone_flags,
 
 	/* copy parts of thread_struct: */
 	p->thread.ksp = (unsigned long) child_stack - 16;
+
+	/* stop some PSR bits from being inherited: */
+	child_ptregs->cr_ipsr =  ((child_ptregs->cr_ipsr | IA64_PSR_BITS_TO_SET)
+				  & ~IA64_PSR_BITS_TO_CLEAR);
+
 	/*
 	 * NOTE: The calling convention considers all floating point
 	 * registers in the high partition (fph) to be scratch.  Since

arch/ia64/kernel/setup.c

@@ -347,6 +347,14 @@ setup_arch (char **cmdline_p)
 #ifdef CONFIG_ACPI_BOOT
 	acpi_boot_init(*cmdline_p);
 #endif
+#ifdef CONFIG_SERIAL_HCDP
+	if (efi.hcdp) {
+		void setup_serial_hcdp(void *);
+
+		/* Setup the serial ports described by HCDP */
+		setup_serial_hcdp(efi.hcdp);
+	}
+#endif
 #ifdef CONFIG_VT
 # if defined(CONFIG_DUMMY_CONSOLE)
 	conswitchp = &dummy_con;
@@ -436,7 +444,7 @@ static void *
 c_start (struct seq_file *m, loff_t *pos)
 {
 #ifdef CONFIG_SMP
-	while (*pos < NR_CPUS && !(cpu_online_map & (1 << *pos)))
+	while (*pos < NR_CPUS && !(cpu_online_map & (1UL << *pos)))
 		++*pos;
 #endif
 	return *pos < NR_CPUS ? cpu_data(*pos) : NULL;
@@ -455,10 +463,10 @@ c_stop (struct seq_file *m, void *v)
 }
 
 struct seq_operations cpuinfo_op = {
-	start:	c_start,
-	next:	c_next,
-	stop:	c_stop,
-	show:	show_cpuinfo
+	.start =	c_start,
+	.next =		c_next,
+	.stop =		c_stop,
+	.show =		show_cpuinfo
 };
 
 void
@@ -542,7 +550,18 @@ cpu_init (void)
 	extern char __per_cpu_end[];
 	int cpu = smp_processor_id();
 
-	my_cpu_data = alloc_bootmem_pages(__per_cpu_end - __per_cpu_start);
+	if (__per_cpu_end - __per_cpu_start > PAGE_SIZE)
+		panic("Per-cpu data area too big! (%Zu > %Zu)",
+		      __per_cpu_end - __per_cpu_start, PAGE_SIZE);
+
+	/*
+	 * On the BSP, the page allocator isn't initialized by the time we get here.  On
+	 * the APs, the bootmem allocator is no longer available...
+	 */
+	if (cpu == 0)
+		my_cpu_data = alloc_bootmem_pages(__per_cpu_end - __per_cpu_start);
+	else
+		my_cpu_data = (void *) get_free_page(GFP_KERNEL);
 	memcpy(my_cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start);
 	__per_cpu_offset[cpu] = (char *) my_cpu_data - __per_cpu_start;
 	my_cpu_info = my_cpu_data + ((char *) &cpu_info - __per_cpu_start);

arch/ia64/kernel/signal.c

@@ -146,6 +146,7 @@ copy_siginfo_to_user (siginfo_t *to, siginfo_t *from)
 	if (from->si_code < 0) {
 		if (__copy_to_user(to, from, sizeof(siginfo_t)))
 			return -EFAULT;
+		return 0;
 	} else {
 		int err;
 

arch/ia64/kernel/smpboot.c

 /*
  * SMP boot-related support
  *
- * Copyright (C) 2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * 01/05/16 Rohit Seth <rohit.seth@intel.com>	Moved SMP booting functions from smp.c to here.
  * 01/04/27 David Mosberger <davidm@hpl.hp.com>	Added ITC synching code.
+ * 02/07/31 David Mosberger <davidm@hpl.hp.com>	Switch over to hotplug-CPU boot-sequence.
+ *						smp_boot_cpus()/smp_commence() is replaced by
+ *						smp_prepare_cpus()/__cpu_up()/smp_cpus_done().
  */
 
 
@@ -66,18 +70,16 @@ static volatile unsigned long go[SLAVE + 1];
 
 #define DEBUG_ITC_SYNC	0
 
-extern void __init calibrate_delay(void);
-extern void start_ap(void);
+extern void __init calibrate_delay (void);
+extern void start_ap (void);
 extern unsigned long ia64_iobase;
 
 int cpucount;
 task_t *task_for_booting_cpu;
 
-/* Setup configured maximum number of CPUs to activate */
-static int max_cpus = -1;
-
 /* Bitmask of currently online CPUs */
 volatile unsigned long cpu_online_map;
+unsigned long phys_cpu_present_map;
 
 /* which logical CPU number maps to which CPU (physical APIC ID) */
 volatile int ia64_cpu_to_sapicid[NR_CPUS];
@@ -86,44 +88,12 @@ static volatile unsigned long cpu_callin_map;
 
 struct smp_boot_data smp_boot_data __initdata;
 
-/* Set when the idlers are all forked */
-volatile int smp_threads_ready;
-
 unsigned long ap_wakeup_vector = -1; /* External Int use to wakeup APs */
 
 char __initdata no_int_routing;
 
 unsigned char smp_int_redirect; /* are INT and IPI redirectable by the chipset? */
 
-/*
- * Setup routine for controlling SMP activation
- *
- * Command-line option of "nosmp" or "maxcpus=0" will disable SMP
- * activation entirely (the MPS table probe still happens, though).
- *
- * Command-line option of "maxcpus=<NUM>", where <NUM> is an integer
- * greater than 0, limits the maximum number of CPUs activated in
- * SMP mode to <NUM>.
- */
-
-static int __init
-nosmp (char *str)
-{
-	max_cpus = 0;
-	return 1;
-}
-
-__setup("nosmp", nosmp);
-
-static int __init
-maxcpus (char *str)
-{
-	get_option(&str, &max_cpus);
-	return 1;
-}
-
-__setup("maxcpus=", maxcpus);
-
 static int __init
 nointroute (char *str)
 {
@@ -299,7 +269,7 @@ smp_setup_percpu_timer (void)
 
 static volatile atomic_t smp_commenced = ATOMIC_INIT(0);
 
-void __init
+static void __init
 smp_commence (void)
 {
 	/*
@@ -308,7 +278,7 @@ smp_commence (void)
 	Dprintk("Setting commenced=1, go go go\n");
 
 	wmb();
-	atomic_set(&smp_commenced,1);
+	atomic_set(&smp_commenced, 1);
 }
 
 
@@ -380,11 +350,7 @@ start_secondary (void *unused)
 	efi_map_pal_code();
 	cpu_init();
 	smp_callin();
-	Dprintk("CPU %d is set to go.\n", smp_processor_id());
-	while (!atomic_read(&smp_commenced))
-		cpu_relax();
 
-	Dprintk("CPU %d is starting idle.\n", smp_processor_id());
 	return cpu_idle();
 }
 
@@ -392,22 +358,20 @@ static struct task_struct * __init
 fork_by_hand (void)
 {
 	/*
-	 * don't care about the eip and regs settings since
-	 * we'll never reschedule the forked task.
+	 * don't care about the eip and regs settings since we'll never reschedule the
+	 * forked task.
 	 */
 	return do_fork(CLONE_VM|CLONE_IDLETASK, 0, 0, 0);
 }
 
-static void __init
-do_boot_cpu (int sapicid)
+static int __init
+do_boot_cpu (int sapicid, int cpu)
 {
 	struct task_struct *idle;
-	int timeout, cpu;
+	int timeout;
 
-	cpu = ++cpucount;
 	/*
-	 * We can't use kernel_thread since we must avoid to
-	 * reschedule the child.
+	 * We can't use kernel_thread since we must avoid to reschedule the child.
 	 */
 	idle = fork_by_hand();
 	if (IS_ERR(idle))
@@ -419,13 +383,11 @@ do_boot_cpu (int sapicid)
 	 */
 	init_idle(idle, cpu);
 
-	ia64_cpu_to_sapicid[cpu] = sapicid;
-
 	unhash_process(idle);
 
 	task_for_booting_cpu = idle;
 
-	Dprintk("Sending wakeup vector %u to AP 0x%x/0x%x.\n", ap_wakeup_vector, cpu, sapicid);
+	Dprintk("Sending wakeup vector %lu to AP 0x%x/0x%x.\n", ap_wakeup_vector, cpu, sapicid);
 
 	platform_send_ipi(cpu, ap_wakeup_vector, IA64_IPI_DM_INT, 0);
 
@@ -448,8 +410,10 @@ do_boot_cpu (int sapicid)
 	} else {
 		printk(KERN_ERR "Processor 0x%x/0x%x is stuck.\n", cpu, sapicid);
 		ia64_cpu_to_sapicid[cpu] = -1;
-		cpucount--;
+		clear_bit(cpu, &cpu_online_map);  /* was set in smp_callin() */
+		return -EINVAL;
 	}
+	return 0;
 }
 
 unsigned long cache_decay_ticks;	/* # of ticks an idle task is considered cache-hot */
@@ -463,22 +427,43 @@ smp_tune_scheduling (void)
 	       (cache_decay_ticks + 1) * 1000 / HZ);
 }
 
+/*
+ * Initialize the logical CPU number to SAPICID mapping
+ */
+void __init
+smp_build_cpu_map (void)
+{
+	int sapicid, cpu, i;
+	int boot_cpu_id = hard_smp_processor_id();
+
+	for (cpu = 0; cpu < NR_CPUS; cpu++)
+		ia64_cpu_to_sapicid[cpu] = -1;
+
+	ia64_cpu_to_sapicid[0] = boot_cpu_id;
+	phys_cpu_present_map = 1;
+
+	for (cpu = 1, i = 0; i < smp_boot_data.cpu_count; i++) {
+		sapicid = smp_boot_data.cpu_phys_id[i];
+		if (sapicid == -1 || sapicid == boot_cpu_id)
+			continue;
+		phys_cpu_present_map |= (1 << cpu);
+		ia64_cpu_to_sapicid[cpu] = sapicid;
+		cpu++;
+	}
+}
+
 /*
  * Cycle through the APs sending Wakeup IPIs to boot each.
  */
 void __init
-smp_boot_cpus (void)
+smp_prepare_cpus (unsigned int max_cpus)
 {
-	int sapicid, cpu;
 	int boot_cpu_id = hard_smp_processor_id();
 
 	/*
-	 * Initialize the logical to physical CPU number mapping
-	 * and the per-CPU profiling counter/multiplier
+	 * Initialize the per-CPU profiling counter/multiplier
 	 */
 
-	for (cpu = 0; cpu < NR_CPUS; cpu++)
-		ia64_cpu_to_sapicid[cpu] = -1;
 	smp_setup_percpu_timer();
 
 	/*
@@ -492,7 +477,6 @@ smp_boot_cpus (void)
 
 	printk("Boot processor id 0x%x/0x%x\n", 0, boot_cpu_id);
 
-	global_irq_holder = NO_PROC_ID;
 	current_thread_info()->cpu = 0;
 	smp_tune_scheduling();
 
@@ -501,55 +485,48 @@ smp_boot_cpus (void)
 	 */
 	if (!max_cpus || (max_cpus < -1)) {
 		printk(KERN_INFO "SMP mode deactivated.\n");
-		cpu_online_map =  1;
-		goto smp_done;
+		cpu_online_map = phys_cpu_present_map = 1;
+		return;
 	}
-	if (max_cpus != -1)
-		printk (KERN_INFO "Limiting CPUs to %d\n", max_cpus);
+}
 
-	if (smp_boot_data.cpu_count > 1) {
+void
+smp_cpus_done (unsigned int dummy)
+{
+	int cpu;
+	unsigned long bogosum = 0;
 
-		printk(KERN_INFO "SMP: starting up secondaries.\n");
+	/*
+	 * Allow the user to impress friends.
+	 */
 
-		for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) {
-			/*
-			 * Don't even attempt to start the boot CPU!
-			 */
-			sapicid = smp_boot_data.cpu_phys_id[cpu];
-			if ((sapicid == -1) || (sapicid == hard_smp_processor_id()))
-				continue;
+	for (cpu = 0; cpu < NR_CPUS; cpu++)
+		if (cpu_online(cpu))
+			bogosum += cpu_data(cpu)->loops_per_jiffy;
 
-			if ((max_cpus > 0) && (cpucount + 1 >= max_cpus))
-				break;
+	printk(KERN_INFO"Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
+	       num_online_cpus(), bogosum/(500000/HZ), (bogosum/(5000/HZ))%100);
+}
 
-			do_boot_cpu(sapicid);
+int __devinit
+__cpu_up (unsigned int cpu)
+{
+	int ret;
+	int sapicid;
 
-			/*
-			 * Make sure we unmap all failed CPUs
-			 */
-			if (ia64_cpu_to_sapicid[cpu] == -1)
-				printk("phys CPU#%d not responding - cannot use it.\n", cpu);
-		}
+	sapicid = ia64_cpu_to_sapicid[cpu];
+	if (sapicid == -1)
+		return -EINVAL;
 
-		/*
-		 * Allow the user to impress friends.
-		 */
-
-		printk("Before bogomips.\n");
-		if (!cpucount) {
-			printk(KERN_ERR "Error: only one processor found.\n");
-		} else {
-			unsigned long bogosum = 0;
-  			for (cpu = 0; cpu < NR_CPUS; cpu++)
-				if (cpu_online_map & (1<<cpu))
-					bogosum += cpu_data(cpu)->loops_per_jiffy;
-
-			printk(KERN_INFO"Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
-			       cpucount + 1, bogosum/(500000/HZ), (bogosum/(5000/HZ))%100);
-		}
-	}
-  smp_done:
-	;
+	printk(KERN_INFO "Processor %d/%d is spinning up...\n", sapicid, cpu);
+
+	/* Processor goes to start_secondary(), sets online flag */
+	ret = do_boot_cpu(sapicid, cpu);
+	if (ret < 0)
+		return ret;
+
+	printk(KERN_INFO "Processor %d has spun up...\n", cpu);
+	return 0;
 }
 
 /*
@@ -571,9 +548,6 @@ init_smp_config(void)
 	ap_startup = (struct fptr *) start_ap;
 	sal_ret = ia64_sal_set_vectors(SAL_VECTOR_OS_BOOT_RENDEZ,
 				       __pa(ap_startup->fp), __pa(ap_startup->gp), 0, 0, 0, 0);
-	if (sal_ret < 0) {
-		printk("SMP: Can't set SAL AP Boot Rendezvous: %s\n     Forcing UP mode\n",
-		       ia64_sal_strerror(sal_ret));
-		max_cpus = 0;
-	}
+	if (sal_ret < 0)
+		printk("SMP: Can't set SAL AP Boot Rendezvous: %s\n", ia64_sal_strerror(sal_ret));
 }

arch/ia64/kernel/sys_ia64.c

@@ -82,7 +82,6 @@ asmlinkage unsigned long
 ia64_shmat (int shmid, void *shmaddr, int shmflg, long arg3, long arg4, long arg5, long arg6,
 	    long arg7, long stack)
 {
-	extern int sys_shmat (int shmid, char *shmaddr, int shmflg, ulong *raddr);
 	struct pt_regs *regs = (struct pt_regs *) &stack;
 	unsigned long raddr;
 	int retval;
@@ -138,10 +137,6 @@ ia64_brk (unsigned long brk, long arg1, long arg2, long arg3,
 	if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE))
 		goto out;
 
-	/* Check if we have enough memory.. */
-	if (!vm_enough_memory((newbrk-oldbrk) >> PAGE_SHIFT))
-		goto out;
-
 	/* Ok, looks good - let it rip. */
 	if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk)
 		goto out;

arch/ia64/kernel/time.c

@@ -41,21 +41,22 @@ do_profile (unsigned long ip)
 	extern unsigned long prof_cpu_mask;
 	extern char _stext;
 
+	if (!prof_buffer)
+		return;
+
 	if (!((1UL << smp_processor_id()) & prof_cpu_mask))
 		return;
 
-	if (prof_buffer && current->pid) {
-		ip -= (unsigned long) &_stext;
-		ip >>= prof_shift;
-		/*
-		 * Don't ignore out-of-bounds IP values silently, put them into the last
-		 * histogram slot, so if present, they will show up as a sharp peak.
-		 */
-		if (ip > prof_len - 1)
-			ip = prof_len - 1;
+	ip -= (unsigned long) &_stext;
+	ip >>= prof_shift;
+	/*
+	 * Don't ignore out-of-bounds IP values silently, put them into the last
+	 * histogram slot, so if present, they will show up as a sharp peak.
+	 */
+	if (ip > prof_len - 1)
+		ip = prof_len - 1;
 
-		atomic_inc((atomic_t *) &prof_buffer[ip]);
-	}
+	atomic_inc((atomic_t *) &prof_buffer[ip]);
 }
 
 /*
@@ -285,9 +286,9 @@ ia64_init_itm (void)
 }
 
 static struct irqaction timer_irqaction = {
-	handler:	timer_interrupt,
-	flags:		SA_INTERRUPT,
-	name:		"timer"
+	.handler =	timer_interrupt,
+	.flags =	SA_INTERRUPT,
+	.name =		"timer"
 };
 
 void __init

arch/ia64/kernel/traps.c

@@ -49,10 +49,15 @@ static fpswa_interface_t *fpswa_interface;
 void __init
 trap_init (void)
 {
-	printk("fpswa interface at %lx\n", ia64_boot_param->fpswa);
-	if (ia64_boot_param->fpswa)
+	int major = 0, minor = 0;
+
+	if (ia64_boot_param->fpswa) {
 		/* FPSWA fixup: make the interface pointer a kernel virtual address: */
 		fpswa_interface = __va(ia64_boot_param->fpswa);
+		major = fpswa_interface->revision & 0xffff;
+		minor = fpswa_interface->revision >> 16;
+	}
+	printk("fpswa interface at %lx (rev %d.%d)\n", ia64_boot_param->fpswa, major, minor);
 }
 
 /*
@@ -62,27 +67,26 @@ trap_init (void)
 void
 bust_spinlocks (int yes)
 {
+	int loglevel_save = console_loglevel;
+
 	spin_lock_init(&timerlist_lock);
 	if (yes) {
 		oops_in_progress = 1;
-#ifdef CONFIG_SMP
-		global_irq_lock = 0;	/* Many serial drivers do __global_cli() */
-#endif
-	} else {
-		int loglevel_save = console_loglevel;
+		return;
+	}
+
 #ifdef CONFIG_VT
-		unblank_screen();
+	unblank_screen();
 #endif
-		oops_in_progress = 0;
-		/*
-		 * OK, the message is on the console.  Now we call printk() without
-		 * oops_in_progress set so that printk will give klogd a poke.  Hold onto
-		 * your hats...
-		 */
-		console_loglevel = 15;		/* NMI oopser may have shut the console up */
-		printk(" ");
-		console_loglevel = loglevel_save;
-	}
+	oops_in_progress = 0;
+	/*
+	 * OK, the message is on the console.  Now we call printk() without
+	 * oops_in_progress set so that printk will give klogd a poke.  Hold onto
+	 * your hats...
+	 */
+	console_loglevel = 15;		/* NMI oopser may have shut the console up */
+	printk(" ");
+	console_loglevel = loglevel_save;
 }
 
 void
@@ -93,9 +97,9 @@ die (const char *str, struct pt_regs *regs, long err)
 		int lock_owner;
 		int lock_owner_depth;
 	} die = {
-		lock:			SPIN_LOCK_UNLOCKED,
-		lock_owner:		-1,
-		lock_owner_depth:	0
+		.lock =			SPIN_LOCK_UNLOCKED,
+		.lock_owner =		-1,
+		.lock_owner_depth =	0
 	};
 
 	if (die.lock_owner != smp_processor_id()) {
@@ -131,6 +135,8 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
 	siginfo_t siginfo;
 	int sig, code;
 
+	die_if_kernel("bad break", regs, break_num);
+
 	/* SIGILL, SIGFPE, SIGSEGV, and SIGBUS want these field initialized: */
 	siginfo.si_addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
 	siginfo.si_imm = break_num;
@@ -247,10 +253,9 @@ disabled_fph_fault (struct pt_regs *regs)
 
 		if (fpu_owner)
 			ia64_flush_fph(fpu_owner);
-
-		ia64_set_fpu_owner(current);
 	}
 #endif /* !CONFIG_SMP */
+	ia64_set_fpu_owner(current);
 	if ((current->thread.flags & IA64_THREAD_FPH_VALID) != 0) {
 		__ia64_load_fpu(current->thread.fph);
 		psr->mfh = 0;
@@ -435,7 +440,7 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 	unsigned long code, error = isr;
 	struct siginfo siginfo;
 	char buf[128];
-	int result;
+	int result, sig;
 	static const char *reason[] = {
 		"IA-64 Illegal Operation fault",
 		"IA-64 Privileged Operation fault",
@@ -479,6 +484,30 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 		break;
 
 	      case 26: /* NaT Consumption */
+		if (user_mode(regs)) {
+			if (((isr >> 4) & 0xf) == 2) {
+				/* NaT page consumption */
+				sig = SIGSEGV;
+				code = SEGV_ACCERR;
+			} else {
+				/* register NaT consumption */
+				sig = SIGILL;
+				code = ILL_ILLOPN;
+			}
+			siginfo.si_signo = sig;
+			siginfo.si_code = code;
+			siginfo.si_errno = 0;
+			siginfo.si_addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
+			siginfo.si_imm = vector;
+			siginfo.si_flags = __ISR_VALID;
+			siginfo.si_isr = isr;
+			force_sig_info(sig, &siginfo, current);
+			return;
+		} else if (done_with_exception(regs))
+			return;
+		sprintf(buf, "NaT consumption");
+		break;
+
 	      case 31: /* Unsupported Data Reference */
 		if (user_mode(regs)) {
 			siginfo.si_signo = SIGILL;
@@ -491,7 +520,7 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			force_sig_info(SIGILL, &siginfo, current);
 			return;
 		}
-		sprintf(buf, (vector == 26) ? "NaT consumption" : "Unsupported data reference");
+		sprintf(buf, "Unsupported data reference");
 		break;
 
 	      case 29: /* Debug */
@@ -508,16 +537,15 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			if (ia64_psr(regs)->is == 0)
 			  ifa = regs->cr_iip;
 #endif
-			siginfo.si_addr = (void *) ifa;
 			break;
-		      case 35: siginfo.si_code = TRAP_BRANCH; break;
-		      case 36: siginfo.si_code = TRAP_TRACE; break;
+		      case 35: siginfo.si_code = TRAP_BRANCH; ifa = 0; break;
+		      case 36: siginfo.si_code = TRAP_TRACE; ifa = 0; break;
 		}
 		siginfo.si_signo = SIGTRAP;
 		siginfo.si_errno = 0;
 		siginfo.si_flags = 0;
 		siginfo.si_isr = 0;
-		siginfo.si_addr = 0;
+		siginfo.si_addr = (void *) ifa;
 		siginfo.si_imm = 0;
 		force_sig_info(SIGTRAP, &siginfo, current);
 		return;

arch/ia64/kernel/unwind.c

@@ -140,13 +140,13 @@ static struct {
 	} stat;
 # endif
 } unw = {
-	tables: &unw.kernel_table,
-	lock: SPIN_LOCK_UNLOCKED,
-	save_order: {
+	.tables = &unw.kernel_table,
+	.lock = SPIN_LOCK_UNLOCKED,
+	.save_order = {
 		UNW_REG_RP, UNW_REG_PFS, UNW_REG_PSP, UNW_REG_PR,
 		UNW_REG_UNAT, UNW_REG_LC, UNW_REG_FPSR, UNW_REG_PRI_UNAT_GR
 	},
-	preg_index: {
+	.preg_index = {
 		struct_offset(struct unw_frame_info, pri_unat_loc)/8,	/* PRI_UNAT_GR */
 		struct_offset(struct unw_frame_info, pri_unat_loc)/8,	/* PRI_UNAT_MEM */
 		struct_offset(struct unw_frame_info, bsp_loc)/8,
@@ -189,9 +189,9 @@ static struct {
 		struct_offset(struct unw_frame_info, fr_loc[30 - 16])/8,
 		struct_offset(struct unw_frame_info, fr_loc[31 - 16])/8,
 	},
-	hash : { [0 ... UNW_HASH_SIZE - 1] = -1 },
+	.hash = { [0 ... UNW_HASH_SIZE - 1] = -1 },
 #if UNW_DEBUG
-	preg_name: {
+	.preg_name = {
 		"pri_unat_gr", "pri_unat_mem", "bsp", "bspstore", "ar.pfs", "ar.rnat", "psp", "rp",
 		"r4", "r5", "r6", "r7",
 		"ar.unat", "pr", "ar.lc", "ar.fpsr",
@@ -634,8 +634,8 @@ alloc_spill_area (unsigned long *offp, unsigned long regsize,
 	for (reg = hi; reg >= lo; --reg) {
 		if (reg->where == UNW_WHERE_SPILL_HOME) {
 			reg->where = UNW_WHERE_PSPREL;
-			reg->val = 0x10 - *offp;
-			*offp += regsize;
+			*offp -= regsize;
+			reg->val = *offp;
 		}
 	}
 }
@@ -814,7 +814,8 @@ desc_frgr_mem (unsigned char grmask, unw_word frmask, struct unw_state_record *s
 	}
 	for (i = 0; i < 20; ++i) {
 		if ((frmask & 1) != 0) {
-			set_reg(sr->curr.reg + UNW_REG_F2 + i, UNW_WHERE_SPILL_HOME,
+			int base = (i < 4) ? UNW_REG_F2 : UNW_REG_F16 - 4;
+			set_reg(sr->curr.reg + base + i, UNW_WHERE_SPILL_HOME,
 				sr->region_start + sr->region_len - 1, 0);
 			sr->any_spills = 1;
 		}

arch/ia64/lib/copy_user.S

@@ -237,15 +237,17 @@ GLOBAL_ENTRY(__copy_user)
 .copy_user_bit##rshift:						\
 1:								\
 	EX(.failure_out,(EPI) st8 [dst1]=tmp,8);		\
-(EPI_1) shrp tmp=val1[PIPE_DEPTH-3],val1[PIPE_DEPTH-2],rshift;	\
-	EX(3f,(p16) ld8 val1[0]=[src1],8);			\
+(EPI_1) shrp tmp=val1[PIPE_DEPTH-2],val1[PIPE_DEPTH-1],rshift;	\
+	EX(3f,(p16) ld8 val1[1]=[src1],8);			\
+(p16)	mov val1[0]=r0;						\
 	br.ctop.dptk 1b;					\
 	;;							\
 	br.cond.sptk.many .diff_align_do_tail;			\
 2:								\
 (EPI)	st8 [dst1]=tmp,8;					\
-(EPI_1)	shrp tmp=val1[PIPE_DEPTH-3],val1[PIPE_DEPTH-2],rshift;	\
+(EPI_1)	shrp tmp=val1[PIPE_DEPTH-2],val1[PIPE_DEPTH-1],rshift;	\
 3:								\
+(p16)	mov val1[1]=r0;						\
 (p16)	mov val1[0]=r0;						\
 	br.ctop.dptk 2b;					\
 	;;							\

arch/ia64/lib/io.c

@@ -87,6 +87,12 @@ ia64_outl (unsigned int val, unsigned long port)
 	__ia64_outl(val, port);
 }
 
+void
+ia64_mmiob (void)
+{
+	__ia64_mmiob();
+}
+
 /* define aliases: */
 
 asm (".global __ia64_inb, __ia64_inw, __ia64_inl");
@@ -99,4 +105,7 @@ asm ("__ia64_outb = ia64_outb");
 asm ("__ia64_outw = ia64_outw");
 asm ("__ia64_outl = ia64_outl");
 
+asm (".global __ia64_mmiob");
+asm ("__ia64_mmiob = ia64_mmiob");
+
 #endif /* CONFIG_IA64_GENERIC */