Merge bk://lia64.bkbits.net/to-linus-2.5

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

Documentation/ia64/IRQ-redir.txt

+IRQ affinity on IA64 platforms
+------------------------------
+                           07.01.2002, Erich Focht <efocht@ess.nec.de>
+
+
+By writing to /proc/irq/IRQ#/smp_affinity the interrupt routing can be
+controlled. The behavior on IA64 platforms is slightly different from
+that described in Documentation/IRQ-affinity.txt for i386 systems.
+
+Because of the usage of SAPIC mode and physical destination mode the
+IRQ target is one particular CPU and cannot be a mask of several
+CPUs. Only the first non-zero bit is taken into account.
+
+
+Usage examples:
+
+The target CPU has to be specified as a hexadecimal CPU mask. The
+first non-zero bit is the selected CPU. This format has been kept for
+compatibility reasons with i386.
+
+Set the delivery mode of interrupt 41 to fixed and route the
+interrupts to CPU #3 (logical CPU number) (2^3=0x08):
+     echo "8" >/proc/irq/41/smp_affinity
+
+Set the default route for IRQ number 41 to CPU 6 in lowest priority
+delivery mode (redirectable):
+     echo "r 40" >/proc/irq/41/smp_affinity
+
+The output of the command
+     cat /proc/irq/IRQ#/smp_affinity
+gives the target CPU mask for the specified interrupt vector. If the CPU
+mask is preceeded by the character "r", the interrupt is redirectable
+(i.e. lowest priority mode routing is used), otherwise its route is
+fixed.
+
+
+
+Initialization and default behavior:
+
+If the platform features IRQ redirection (info provided by SAL) all
+IO-SAPIC interrupts are initialized with CPU#0 as their default target
+and the routing is the so called "lowest priority mode" (actually
+fixed SAPIC mode with hint). The XTP chipset registers are used as hints
+for the IRQ routing. Currently in Linux XTP registers can have three
+values:
+	- minimal for an idle task,
+	- normal if any other task runs,
+	- maximal if the CPU is going to be switched off.
+The IRQ is routed to the CPU with lowest XTP register value, the
+search begins at the default CPU. Therefore most of the interrupts
+will be handled by CPU #0.
+
+If the platform doesn't feature interrupt redirection IOSAPIC fixed
+routing is used. The target CPUs are distributed in a round robin
+manner. IRQs will be routed only to the selected target CPUs. Check
+with
+        cat /proc/interrupts
+
+
+
+Comments:
+
+On large (multi-node) systems it is recommended to route the IRQs to
+the node to which the corresponding device is connected.
+For systems like the NEC AzusA we get IRQ node-affinity for free. This
+is because usually the chipsets on each node redirect the interrupts
+only to their own CPUs (as they cannot see the XTP registers on the
+other nodes).
+

Makefile

@@ -246,14 +246,14 @@ MRPROPER_DIRS = \
 
 include arch/$(ARCH)/Makefile
 
-export	CPPFLAGS CFLAGS AFLAGS
+export	CPPFLAGS CFLAGS CFLAGS_KERNEL AFLAGS AFLAGS_KERNEL
 
 export	NETWORKS DRIVERS LIBS HEAD LDFLAGS LINKFLAGS MAKEBOOT ASFLAGS
 
 .S.s:
-	$(CPP) $(AFLAGS) -traditional -o $*.s $<
+	$(CPP) $(AFLAGS) $(AFLAGS_KERNEL) -traditional -o $*.s $<
 .S.o:
-	$(CC) $(AFLAGS) -traditional -c -o $*.o $<
+	$(CC) $(AFLAGS) $(AFLAGS_KERNEL) -traditional -c -o $*.o $<
 
 Version: dummy
 	@rm -f include/linux/compile.h

arch/ia64/Makefile

@@ -25,7 +25,7 @@ CFLAGS_KERNEL := -mconstant-gp
 GCC_VERSION=$(shell $(CROSS_COMPILE)$(HOSTCC) -v 2>&1 | fgrep 'gcc version' | cut -f3 -d' ' | cut -f1 -d'.')
 
 ifneq ($(GCC_VERSION),2)
-	CFLAGS += -frename-registers --param max-inline-insns=400
+	CFLAGS += -frename-registers --param max-inline-insns=2000
 endif
 
 ifeq ($(CONFIG_ITANIUM_BSTEP_SPECIFIC),y)
@@ -58,7 +58,7 @@ ifdef CONFIG_IA64_SGI_SN
 	CFLAGS		+= -DBRINGUP
         SUBDIRS         :=      arch/$(ARCH)/sn/kernel	\
 				arch/$(ARCH)/sn/io	\
-				arch/$(ARCH)/sn/fprom	\
+				arch/$(ARCH)/sn/fakeprom	\
 				$(SUBDIRS)
         CORE_FILES      :=      arch/$(ARCH)/sn/kernel/sn.o	\
 				arch/$(ARCH)/sn/io/sgiio.o	\

arch/ia64/config.in

@@ -119,6 +119,7 @@ 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
 
@@ -230,7 +231,7 @@ if [ "$CONFIG_IA64_HP_SIM" != "n" -o "$CONFIG_IA64_GENERIC" != "n" ]; then
   mainmenu_option next_comment
   comment 'Simulated drivers'
 
-  tristate 'Simulated Ethernet ' CONFIG_SIMETH
+  bool 'Simulated Ethernet ' CONFIG_SIMETH
   bool 'Simulated serial driver support' CONFIG_SIM_SERIAL
   if [ "$CONFIG_SCSI" != "n" ]; then
     bool 'Simulated SCSI disk' CONFIG_SCSI_SIM
@@ -252,13 +253,20 @@ if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
    bool '  Disable VHPT' CONFIG_DISABLE_VHPT
    bool '  Magic SysRq key' CONFIG_MAGIC_SYSRQ
 
-# early printk is currently broken for SMP: the secondary processors get stuck...
-#   bool '  Early printk support (requires VGA!)' CONFIG_IA64_EARLY_PRINTK
-
+   bool '  Early printk support (requires VGA!)' CONFIG_IA64_EARLY_PRINTK
    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
    bool '  Turn on irq debug checks (slow!)' CONFIG_IA64_DEBUG_IRQ
+   bool '  Built-in Kernel Debugger support' CONFIG_KDB
+   dep_tristate '    KDB modules' CONFIG_KDB_MODULES $CONFIG_KDB
+   if [ "$CONFIG_KDB" = "y" ]; then
+      bool '    KDB off by default' CONFIG_KDB_OFF
+      comment '  Load all symbols for debugging is required for KDB'
+      define_bool CONFIG_KALLSYMS y
+   else
+      bool '  Load all symbols for debugging' CONFIG_KALLSYMS
+   fi
 fi
 
 endmenu

arch/ia64/dig/setup.c

@@ -33,6 +33,7 @@
  * is sufficient (the IDE driver will autodetect the drive geometry).
  */
 char drive_info[4*16];
+extern int pcat_compat;
 
 unsigned char aux_device_present = 0xaa;	/* XXX remove this when legacy I/O is gone */
 
@@ -81,13 +82,19 @@ dig_setup (char **cmdline_p)
 	screen_info.orig_video_ega_bx = 3;	/* XXX fake */
 }
 
-void
+void __init
 dig_irq_init (void)
 {
-	/*
-	 * Disable the compatibility mode interrupts (8259 style), needs IN/OUT support
-	 * enabled.
-	 */
-	outb(0xff, 0xA1);
-	outb(0xff, 0x21);
+	if (pcat_compat) {
+		/*
+		 * Disable the compatibility mode interrupts (8259 style), needs IN/OUT support
+		 * enabled.
+		 */
+		printk("%s: Disabling PC-AT compatible 8259 interrupts\n", __FUNCTION__);
+		outb(0xff, 0xA1);
+		outb(0xff, 0x21);
+	} else {
+		printk("%s: System doesn't have PC-AT compatible dual-8259 setup. "
+		       "Nothing to be done\n", __FUNCTION__);
+	}
 }

arch/ia64/hp/hpsim_console.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/config.h>
+
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/param.h>
 #include <linux/string.h>
 #include <linux/types.h>
+#include <linux/tty.h>
 #include <linux/kdev_t.h>
 #include <linux/console.h>
 
@@ -57,5 +60,5 @@ simcons_write (struct console *cons, const char *buf, unsigned count)
 static kdev_t
 simcons_console_device (struct console *c)
 {
-	return MKDEV(TTY_MAJOR, 64 + c->index);
+	return mk_kdev(TTY_MAJOR, 64 + c->index);
 }

arch/ia64/ia32/binfmt_elf32.c

@@ -142,10 +142,11 @@ ia64_elf32_init (struct pt_regs *regs)
 	/*
 	 * Setup GDTD.  Note: GDTD is the descrambled version of the pseudo-descriptor
 	 * format defined by Figure 3-11 "Pseudo-Descriptor Format" in the IA-32
-	 * architecture manual.
+	 * architecture manual. Also note that the only fields that are not ignored are
+	 * `base', `limit', 'G', `P' (must be 1) and `S' (must be 0).
 	 */
-	regs->r31 = IA32_SEG_UNSCRAMBLE(IA32_SEG_DESCRIPTOR(IA32_GDT_OFFSET, IA32_PAGE_SIZE - 1, 0,
-							    0, 0, 0, 0, 0, 0));
+	regs->r31 = IA32_SEG_UNSCRAMBLE(IA32_SEG_DESCRIPTOR(IA32_GDT_OFFSET, IA32_PAGE_SIZE - 1,
+							    0, 0, 0, 1, 0, 0, 0));
 	/* Setup the segment selectors */
 	regs->r16 = (__USER_DS << 16) | __USER_DS; /* ES == DS, GS, FS are zero */
 	regs->r17 = (__USER_DS << 16) | __USER_CS; /* SS, CS; ia32_load_state() sets TSS and LDT */
@@ -206,6 +207,7 @@ elf32_set_personality (void)
 	set_personality(PER_LINUX32);
 	current->thread.map_base  = IA32_PAGE_OFFSET/3;
 	current->thread.task_size = IA32_PAGE_OFFSET;	/* use what Linux/x86 uses... */
+	current->thread.flags |= IA64_THREAD_XSTACK;	/* data must be executable */
 	set_fs(USER_DS);				/* set addr limit for new TASK_SIZE */
 }
 

arch/ia64/ia32/ia32_entry.S

@@ -37,7 +37,7 @@ ENTRY(ia32_clone)
 	mov loc1=r16				// save ar.pfs across do_fork
 	.body
 	zxt4 out1=in1				// newsp
-	mov out3=0				// stacksize
+	mov out3=16				// stacksize (compensates for 16-byte scratch area)
 	adds out2=IA64_SWITCH_STACK_SIZE+16,sp	// out2 = &regs
 	zxt4 out0=in0				// out0 = clone_flags
 	br.call.sptk.many rp=do_fork
@@ -98,7 +98,7 @@ GLOBAL_ENTRY(ia32_ret_from_clone)
 	ld8 r2=[r2]
 	;;
 	mov r8=0
-	tbit.nz p6,p0=r2,PT_TRACESYS_BIT
+	tbit.nz p6,p0=r2,PT_SYSCALLTRACE_BIT
 (p6)	br.cond.spnt .ia32_strace_check_retval
 	;;					// prevent RAW on r8
 END(ia32_ret_from_clone)
@@ -220,7 +220,7 @@ ia32_syscall_table:
 	data8 sys32_pipe
 	data8 sys32_times
 	data8 sys32_ni_syscall	  /* old prof syscall holder */
-	data8 sys_brk		  /* 45 */
+	data8 sys32_brk		  /* 45 */
 	data8 sys_setgid	/* 16-bit version */
 	data8 sys_getgid	/* 16-bit version */
 	data8 sys32_signal

arch/ia64/ia32/ia32_ioctl.c

@@ -3,12 +3,14 @@
  *
  * Copyright (C) 2000 VA Linux Co
  * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
- * Copyright (C) 2001 Hewlett-Packard Co
+ * Copyright (C) 2001-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
 #include <linux/types.h>
 #include <linux/dirent.h>
+#include <linux/fs.h>		/* argh, msdos_fs.h isn't self-contained... */
+
 #include <linux/msdos_fs.h>
 #include <linux/mtio.h>
 #include <linux/ncp_fs.h>
@@ -79,6 +81,38 @@ sys32_ioctl (unsigned int fd, unsigned int cmd, unsigned int arg)
 
 		      return ret;
 	      }
+		case IOCTL_NR(SIOCGIFCONF):
+		{
+			struct ifconf32 {
+				int		ifc_len;
+				unsigned int	ifc_ptr;
+			} ifconf32;
+			struct ifconf ifconf;
+			int i, n;
+			char *p32, *p64;
+			char buf[32];	/* sizeof IA32 ifreq structure */
+
+			if (copy_from_user(&ifconf32, P(arg), sizeof(ifconf32)))
+				return -EFAULT;
+			ifconf.ifc_len = ifconf32.ifc_len;
+			ifconf.ifc_req = P(ifconf32.ifc_ptr);
+			ret = DO_IOCTL(fd, SIOCGIFCONF, &ifconf);
+			ifconf32.ifc_len = ifconf.ifc_len;
+			if (copy_to_user(P(arg), &ifconf32, sizeof(ifconf32)))
+				return -EFAULT;
+			n = ifconf.ifc_len / sizeof(struct ifreq);
+			p32 = P(ifconf32.ifc_ptr);
+			p64 = P(ifconf32.ifc_ptr);
+			for (i = 0; i < n; i++) {
+				if (copy_from_user(buf, p64, sizeof(struct ifreq)))
+					return -EFAULT;
+				if (copy_to_user(p32, buf, sizeof(buf)))
+					return -EFAULT;
+				p32 += sizeof(buf);
+				p64 += sizeof(struct ifreq);
+			}
+			return ret;
+		}
 
 	      case IOCTL_NR(DRM_IOCTL_VERSION):
 	      {

arch/ia64/ia32/ia32_signal.c

 /*
  * IA32 Architecture-specific signal handling support.
  *
- * Copyright (C) 1999, 2001 Hewlett-Packard Co
+ * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
  * Copyright (C) 2000 VA Linux Co
@@ -522,6 +522,7 @@ get_sigframe (struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
 static int
 setup_frame_ia32 (int sig, struct k_sigaction *ka, sigset_t *set, struct pt_regs * regs)
 {
+	struct exec_domain *ed = current_thread_info()->exec_domain;
 	struct sigframe_ia32 *frame;
 	int err = 0;
 
@@ -530,12 +531,8 @@ setup_frame_ia32 (int sig, struct k_sigaction *ka, sigset_t *set, struct pt_regs
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
 		goto give_sigsegv;
 
-	err |= __put_user((current->exec_domain
-			   && current->exec_domain->signal_invmap
-			   && sig < 32
-			   ? (int)(current->exec_domain->signal_invmap[sig])
-			   : sig),
-			  &frame->sig);
+	err |= __put_user((ed && ed->signal_invmap && sig < 32
+			   ? (int)(ed->signal_invmap[sig]) : sig), &frame->sig);
 
 	err |= setup_sigcontext_ia32(&frame->sc, &frame->fpstate, regs, set->sig[0]);
 
@@ -590,6 +587,7 @@ static int
 setup_rt_frame_ia32 (int sig, struct k_sigaction *ka, siginfo_t *info,
 		     sigset_t *set, struct pt_regs * regs)
 {
+	struct exec_domain *ed = current_thread_info()->exec_domain;
 	struct rt_sigframe_ia32 *frame;
 	int err = 0;
 
@@ -598,12 +596,8 @@ setup_rt_frame_ia32 (int sig, struct k_sigaction *ka, siginfo_t *info,
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
 		goto give_sigsegv;
 
-	err |= __put_user((current->exec_domain
-			   && current->exec_domain->signal_invmap
-			   && sig < 32
-			   ? current->exec_domain->signal_invmap[sig]
-			   : sig),
-			  &frame->sig);
+	err |= __put_user((ed && ed->signal_invmap
+			   && sig < 32 ? ed->signal_invmap[sig] : sig), &frame->sig);
 	err |= __put_user((long)&frame->info, &frame->pinfo);
 	err |= __put_user((long)&frame->uc, &frame->puc);
 	err |= copy_siginfo_to_user32(&frame->info, info);

arch/ia64/ia32/ia32_support.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
  * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
- * Copyright (C) 2001 Hewlett-Packard Co
+ * Copyright (C) 2001-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * 06/16/00	A. Mallick	added csd/ssd/tssd for ia32 thread context
@@ -153,10 +153,12 @@ ia32_gdt_init (void)
 	/* We never change the TSS and LDT descriptors, so we can share them across all CPUs.  */
 	ldt_size = PAGE_ALIGN(IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE);
 	for (nr = 0; nr < NR_CPUS; ++nr) {
-		ia32_gdt[_TSS(nr)] = IA32_SEG_DESCRIPTOR(IA32_TSS_OFFSET, 235,
-							 0xb, 0, 3, 1, 1, 1, 0);
-		ia32_gdt[_LDT(nr)] = IA32_SEG_DESCRIPTOR(IA32_LDT_OFFSET, ldt_size - 1,
-							 0x2, 0, 3, 1, 1, 1, 0);
+		ia32_gdt[_TSS(nr) >> IA32_SEGSEL_INDEX_SHIFT]
+			= IA32_SEG_DESCRIPTOR(IA32_TSS_OFFSET, 235,
+					      0xb, 0, 3, 1, 1, 1, 0);
+		ia32_gdt[_LDT(nr) >> IA32_SEGSEL_INDEX_SHIFT]
+			= IA32_SEG_DESCRIPTOR(IA32_LDT_OFFSET, ldt_size - 1,
+					      0x2, 0, 3, 1, 1, 1, 0);
 	}
 }
 
@@ -172,6 +174,10 @@ ia32_bad_interrupt (unsigned long int_num, struct pt_regs *regs)
 
 	siginfo.si_signo = SIGTRAP;
 	siginfo.si_errno = int_num;	/* XXX is it OK to abuse si_errno like this? */
+	siginfo.si_flags = 0;
+	siginfo.si_isr = 0;
+	siginfo.si_addr = 0;
+	siginfo.si_imm = 0;
 	siginfo.si_code = TRAP_BRKPT;
 	force_sig_info(SIGTRAP, &siginfo, current);
 }

arch/ia64/ia32/ia32_traps.c

@@ -2,7 +2,7 @@
  * IA-32 exception handlers
  *
  * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
- * Copyright (C) 2001 Hewlett-Packard Co
+ * Copyright (C) 2001-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * 06/16/00	A. Mallick	added siginfo for most cases (close to IA32)
@@ -40,7 +40,11 @@ ia32_exception (struct pt_regs *regs, unsigned long isr)
 {
 	struct siginfo siginfo;
 
+	/* initialize these fields to avoid leaking kernel bits to user space: */
 	siginfo.si_errno = 0;
+	siginfo.si_flags = 0;
+	siginfo.si_isr = 0;
+	siginfo.si_imm = 0;
 	switch ((isr >> 16) & 0xff) {
 	      case 1:
 	      case 2:
@@ -103,6 +107,8 @@ ia32_exception (struct pt_regs *regs, unsigned long isr)
 			 * and it will suffer the consequences since we won't be able to
 			 * fully reproduce the context of the exception
 			 */
+			siginfo.si_isr = isr;
+			siginfo.si_flags = __ISR_VALID;
 			switch(((~fcr) & (fsr & 0x3f)) | (fsr & 0x240)) {
 				case 0x000:
 				default:

arch/ia64/ia32/sys_ia32.c

@@ -6,7 +6,7 @@
  * Copyright (C) 1999		Arun Sharma <arun.sharma@intel.com>
  * Copyright (C) 1997,1998	Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  * Copyright (C) 1997		David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 2000-2001 Hewlett-Packard Co
+ * Copyright (C) 2000-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * These routines maintain argument size conversion between 32bit and 64bit
@@ -74,6 +74,9 @@
 #define PAGE_START(addr)	((addr) & PAGE_MASK)
 #define PAGE_OFF(addr)		((addr) & ~PAGE_MASK)
 
+#define high2lowuid(uid) ((uid) > 65535 ? 65534 : (uid))
+#define high2lowgid(gid) ((gid) > 65535 ? 65534 : (gid))
+
 extern asmlinkage long sys_execve (char *, char **, char **, struct pt_regs *);
 extern asmlinkage long sys_mprotect (unsigned long, size_t, unsigned long);
 extern asmlinkage long sys_munmap (unsigned long, size_t);
@@ -82,6 +85,7 @@ extern unsigned long arch_get_unmapped_area (struct file *, unsigned long, unsig
 
 /* forward declaration: */
 asmlinkage long sys32_mprotect (unsigned int, unsigned int, int);
+asmlinkage unsigned long sys_brk(unsigned long);
 
 /*
  * Anything that modifies or inspects ia32 user virtual memory must hold this semaphore
@@ -400,7 +404,7 @@ emulate_mmap (struct file *file, unsigned long start, unsigned long len, int pro
 			return -EINVAL;
 		}
 		if (!(prot & PROT_WRITE) && sys_mprotect(pstart, pend - pstart, prot) < 0)
-			return EINVAL;
+			return -EINVAL;
 	}
 	return start;
 }
@@ -2578,6 +2582,7 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
 	      default:
 		return -EINVAL;
 	}
+	return -EINVAL;
 }
 
 /*
@@ -3783,6 +3788,19 @@ sys32_personality (unsigned int personality)
 	return ret;
 }
 
+asmlinkage unsigned long
+sys32_brk (unsigned int brk)
+{
+	unsigned long ret, obrk;
+	struct mm_struct *mm = current->mm;
+
+	obrk = mm->brk;
+	ret = sys_brk(brk);
+	if (ret < obrk)
+		clear_user((void *) ret, PAGE_ALIGN(ret) - ret);
+	return ret;
+}
+
 #ifdef	NOTYET  /* UNTESTED FOR IA64 FROM HERE DOWN */
 
 struct ncp_mount_data32 {

arch/ia64/kernel/acpi.c

@@ -5,11 +5,11 @@
  * 'IA-64 Extensions to ACPI Specification' Revision 0.6
  *
  * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
- * Copyright (C) 2000 Hewlett-Packard Co.
- * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999, 2000 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 2000, 2002 Hewlett-Packard Co.
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  * Copyright (C) 2000 Intel Corp.
- * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ * Copyright (C) 2000, 2001 J.I. Lee <jung-ik.lee@intel.com>
  *      ACPI based kernel configuration manager.
  *      ACPI 2.0 & IA64 ext 0.71
  */
@@ -44,6 +44,8 @@ int platform_irq_list[ACPI_MAX_PLATFORM_IRQS];
 int __initdata available_cpus;
 int __initdata total_cpus;
 
+int __initdata pcat_compat;
+
 void (*pm_idle) (void);
 void (*pm_power_off) (void);
 
@@ -293,6 +295,16 @@ acpi20_parse_madt (acpi_madt_t *madt)
 	} else
 		printk("Lapic address set to default 0x%lx\n", ipi_base_addr);
 
+	/*
+	 * The PCAT_COMPAT flag indicates that the system has a dual-8259 compatible
+	 * setup.
+	 */
+#ifdef CONFIG_ITANIUM
+	pcat_compat = 1; /* fw on some Itanium systems is broken... */
+#else
+	pcat_compat = (madt->flags & MADT_PCAT_COMPAT);
+#endif
+
 	p = (char *) (madt + 1);
 	end = p + (madt->header.length - sizeof(acpi_madt_t));
 
@@ -319,17 +331,7 @@ acpi20_parse_madt (acpi_madt_t *madt)
 		      case ACPI20_ENTRY_IO_SAPIC:
 			iosapic = (acpi_entry_iosapic_t *) p;
 			if (iosapic_init)
-				/*
-				 * The PCAT_COMPAT flag indicates that the system has a
-				 * dual-8259 compatible setup.
-				 */
-				iosapic_init(iosapic->address, iosapic->irq_base,
-#ifdef CONFIG_ITANIUM
-					     1 /* fw on some Itanium systems is broken... */
-#else
-					     (madt->flags & MADT_PCAT_COMPAT)
-#endif
-					);
+				iosapic_init(iosapic->address, iosapic->irq_base, pcat_compat);
 			break;
 
 		      case ACPI20_ENTRY_PLATFORM_INT_SOURCE:
@@ -401,7 +403,7 @@ acpi20_parse (acpi20_rsdp_t *rsdp20)
 # ifdef CONFIG_ACPI
 	acpi_xsdt_t *xsdt;
 	acpi_desc_table_hdr_t *hdrp;
-	acpi_madt_t *madt;
+	acpi_madt_t *madt = NULL;
 	int tables, i;
 
 	if (strncmp(rsdp20->signature, ACPI_RSDP_SIG, ACPI_RSDP_SIG_LEN)) {

arch/ia64/kernel/brl_emu.c

@@ -2,6 +2,9 @@
  *  Emulation of the "brl" instruction for IA64 processors that
  *  don't support it in hardware.
  *  Author: Stephan Zeisset, Intel Corp. <Stephan.Zeisset@intel.com>
+ *
+ *    02/22/02	D. Mosberger	Clear si_flgs, si_isr, and si_imm to avoid
+ *				leaking kernel bits.
  */
 
 #include <linux/kernel.h>
@@ -195,6 +198,9 @@ ia64_emulate_brl (struct pt_regs *regs, unsigned long ar_ec)
 		printk("Woah! Unimplemented Instruction Address Trap!\n");
 		siginfo.si_signo = SIGILL;
 		siginfo.si_errno = 0;
+		siginfo.si_flags = 0;
+		siginfo.si_isr = 0;
+		siginfo.si_imm = 0;
 		siginfo.si_code = ILL_BADIADDR;
 		force_sig_info(SIGILL, &siginfo, current);
 	} else if (ia64_psr(regs)->tb) {
@@ -205,6 +211,10 @@ ia64_emulate_brl (struct pt_regs *regs, unsigned long ar_ec)
 		siginfo.si_signo = SIGTRAP;
 		siginfo.si_errno = 0;
 		siginfo.si_code = TRAP_BRANCH;
+		siginfo.si_flags = 0;
+		siginfo.si_isr = 0;
+		siginfo.si_addr = 0;
+		siginfo.si_imm = 0;
 		force_sig_info(SIGTRAP, &siginfo, current);
 	} else if (ia64_psr(regs)->ss) {
 		/*
@@ -214,6 +224,10 @@ ia64_emulate_brl (struct pt_regs *regs, unsigned long ar_ec)
 		siginfo.si_signo = SIGTRAP;
 		siginfo.si_errno = 0;
 		siginfo.si_code = TRAP_TRACE;
+		siginfo.si_flags = 0;
+		siginfo.si_isr = 0;
+		siginfo.si_addr = 0;
+		siginfo.si_imm = 0;
 		force_sig_info(SIGTRAP, &siginfo, current);
 	}
 	return rv;

arch/ia64/kernel/efivars.c

@@ -29,6 +29,11 @@
  *
  * Changelog:
  *
+ *  12 Feb 2002 - Matt Domsch <Matt_Domsch@dell.com>
+ *   use list_for_each_safe when deleting vars.
+ *   remove ifdef CONFIG_SMP around include <linux/smp.h>
+ *   v0.04 release to linux-ia64@linuxia64.org
+ *
  *  20 April 2001 - Matt Domsch <Matt_Domsch@dell.com>
  *   Moved vars from /proc/efi to /proc/efi/vars, and made
  *   efi.c own the /proc/efi directory.
@@ -56,18 +61,16 @@
 #include <linux/sched.h>		/* for capable() */
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/smp.h>
 
 #include <asm/efi.h>
 #include <asm/uaccess.h>
-#ifdef CONFIG_SMP
-#include <linux/smp.h>
-#endif
 
 MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
 MODULE_DESCRIPTION("/proc interface to EFI Variables");
 MODULE_LICENSE("GPL");
 
-#define EFIVARS_VERSION "0.03 2001-Apr-20"
+#define EFIVARS_VERSION "0.04 2002-Feb-12"
 
 static int
 efivar_read(char *page, char **start, off_t off,
@@ -265,7 +268,7 @@ efivar_write(struct file *file, const char *buffer,
 {
 	unsigned long strsize1, strsize2;
 	int found=0;
-	struct list_head *pos;
+	struct list_head *pos, *n;
 	unsigned long size = sizeof(efi_variable_t);
 	efi_status_t status;
 	efivar_entry_t *efivar = data, *search_efivar = NULL;
@@ -297,7 +300,7 @@ efivar_write(struct file *file, const char *buffer,
 	   This allows any properly formatted data structure to
 	   be written to any of the files in /proc/efi/vars and it will work.
 	*/
-	list_for_each(pos, &efivar_list) {
+	list_for_each_safe(pos, n, &efivar_list) {
 		search_efivar = efivar_entry(pos);
 		strsize1 = utf8_strsize(search_efivar->var.VariableName, 1024);
 		strsize2 = utf8_strsize(var_data->VariableName, 1024);
@@ -413,12 +416,12 @@ efivars_init(void)
 static void __exit
 efivars_exit(void)
 {
-	struct list_head *pos;
+	struct list_head *pos, *n;
 	efivar_entry_t *efivar;
 
 	spin_lock(&efivars_lock);
 
-	list_for_each(pos, &efivar_list) {
+	list_for_each_safe(pos, n, &efivar_list) {
 		efivar = efivar_entry(pos);
 		remove_proc_entry(efivar->entry->name, efi_vars_dir);
 		list_del(&efivar->list);

arch/ia64/kernel/entry.S

@@ -3,7 +3,7 @@
  *
  * Kernel entry points.
  *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  * Copyright (C) 1999 VA Linux Systems
  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
@@ -30,14 +30,15 @@
 
 #include <linux/config.h>
 
+#include <asm/asmmacro.h>
 #include <asm/cache.h>
 #include <asm/errno.h>
 #include <asm/kregs.h>
 #include <asm/offsets.h>
+#include <asm/pgtable.h>
 #include <asm/processor.h>
+#include <asm/thread_info.h>
 #include <asm/unistd.h>
-#include <asm/asmmacro.h>
-#include <asm/pgtable.h>
 
 #include "minstate.h"
 
@@ -115,7 +116,7 @@ GLOBAL_ENTRY(sys_clone)
 	mov loc1=r16				// save ar.pfs across do_fork
 	.body
 	mov out1=in1
-	mov out3=0
+	mov out3=16				// stacksize (compensates for 16-byte scratch area)
 	adds out2=IA64_SWITCH_STACK_SIZE+16,sp	// out2 = &regs
 	mov out0=in0				// out0 = clone_flags
 	br.call.sptk.many rp=do_fork
@@ -128,6 +129,9 @@ END(sys_clone)
 
 /*
  * prev_task <- ia64_switch_to(struct task_struct *next)
+ *	With Ingo's new scheduler, interrupts are disabled when this routine gets
+ *	called.  The code starting at .map relies on this.  The rest of the code
+ *	doesn't care about the interrupt masking status.
  */
 GLOBAL_ENTRY(ia64_switch_to)
 	.prologue
@@ -158,10 +162,8 @@ 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
 	;;
-(p6)	ssm psr.i			// renable psr.i AFTER the ic bit is serialized
 	DO_LOAD_SWITCH_STACK
 
 #ifdef CONFIG_SMP
@@ -170,7 +172,7 @@ GLOBAL_ENTRY(ia64_switch_to)
 	br.ret.sptk.many rp		// boogie on out in new context
 
 .map:
-	rsm psr.i | psr.ic
+	rsm psr.ic			// interrupts (psr.i) are already disabled here
 	movl r25=PAGE_KERNEL
 	;;
 	srlz.d
@@ -433,7 +435,7 @@ GLOBAL_ENTRY(invoke_syscall_trace)
 	.body
 	mov loc2=b6
 	;;
-#error	br.call.sptk.many rp=syscall_trace
+	br.call.sptk.many rp=syscall_trace
 .ret3:	mov rp=loc0
 	mov ar.pfs=loc1
 	mov b6=loc2
@@ -454,7 +456,7 @@ END(invoke_syscall_trace)
 
 GLOBAL_ENTRY(ia64_trace_syscall)
 	PT_REGS_UNWIND_INFO(0)
-#error	br.call.sptk.many rp=invoke_syscall_trace // give parent a chance to catch syscall args
+	br.call.sptk.many rp=invoke_syscall_trace // give parent a chance to catch syscall args
 .ret6:	br.call.sptk.many rp=b6			// do the syscall
 strace_check_retval:
 	cmp.lt p6,p0=r8,r0			// syscall failed?
@@ -467,7 +469,7 @@ strace_save_retval:
 .mem.offset 0,0;	st8.spill [r2]=r8	// store return value in slot for r8
 .mem.offset 8,0;	st8.spill [r3]=r10	// clear error indication in slot for r10
 ia64_strace_leave_kernel:
-#error	br.call.sptk.many rp=invoke_syscall_trace // give parent a chance to catch return value
+	br.call.sptk.many rp=invoke_syscall_trace // give parent a chance to catch return value
 .rety:	br.cond.sptk ia64_leave_kernel
 
 strace_error:
@@ -491,12 +493,12 @@ GLOBAL_ENTRY(ia64_ret_from_clone)
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
 .ret8:
-	adds r2=IA64_TASK_PTRACE_OFFSET,r13
+	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
-	ld8 r2=[r2]
+	ld4 r2=[r2]
 	;;
 	mov r8=0
-	tbit.nz p6,p0=r2,PT_TRACESYS_BIT
+	tbit.nz p6,p0=r2,TIF_SYSCALL_TRACE
 (p6)	br.cond.spnt strace_check_retval
 	;;					// added stop bits to prevent r8 dependency
 END(ia64_ret_from_clone)
@@ -516,50 +518,29 @@ END(ia64_ret_from_syscall)
 	// fall through
 GLOBAL_ENTRY(ia64_leave_kernel)
 	PT_REGS_UNWIND_INFO(0)
-	lfetch.fault [sp]
-	movl r14=.restart
-	;;
-	mov.ret.sptk rp=r14,.restart
-.restart:
-	adds r17=IA64_TASK_NEED_RESCHED_OFFSET,r13
-	adds r18=IA64_TASK_SIGPENDING_OFFSET,r13
-#ifdef CONFIG_PERFMON
-	adds r19=IA64_TASK_PFM_MUST_BLOCK_OFFSET,r13
-#endif
-	;;
-#ifdef CONFIG_PERFMON
-(pUser)	ld8 r19=[r19]				// load current->thread.pfm_must_block
-#endif
-#error (pUser)	ld8 r17=[r17]				// load current->need_resched
-#error (pUser)	ld4 r18=[r18]				// load current->sigpending
+	// work.need_resched etc. mustn't get changed by this CPU before it returns to userspace:
+(pUser)	cmp.eq.unc p6,p0=r0,r0			// p6 <- pUser
+(pUser)	rsm psr.i
 	;;
-#ifdef CONFIG_PERFMON
-(pUser)	cmp.ne.unc p9,p0=r19,r0			// current->thread.pfm_must_block != 0?
-#endif
-#error (pUser)	cmp.ne.unc p7,p0=r17,r0			// current->need_resched != 0?
-#errror (pUser)	cmp.ne.unc p8,p0=r18,r0			// current->sigpending != 0?
+(pUser)	adds r17=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
+.work_processed:
+(p6)	ld4 r18=[r17]				// load current_thread_info()->flags
 	adds r2=PT(R8)+16,r12
 	adds r3=PT(R9)+16,r12
-#ifdef CONFIG_PERFMON
-(p9)	br.call.spnt.many b7=pfm_block_on_overflow
-#endif
-#if __GNUC__ < 3
-(p7)	br.call.spnt.many b7=invoke_schedule
-#else
-(p7)	br.call.spnt.many b7=schedule
-#endif
-(p8)	br.call.spnt.many b7=handle_signal_delivery	// check & deliver pending signals
 	;;
 	// start restoring the state saved on the kernel stack (struct pt_regs):
 	ld8.fill r8=[r2],16
 	ld8.fill r9=[r3],16
+(p6)	and r19=TIF_WORK_MASK,r18		// any work other than TIF_SYSCALL_TRACE?
 	;;
 	ld8.fill r10=[r2],16
 	ld8.fill r11=[r3],16
+(p6)	cmp4.ne.unc p6,p0=r19, r0		// any special work pending?
 	;;
 	ld8.fill r16=[r2],16
 	ld8.fill r17=[r3],16
+(p6)	br.cond.spnt .work_pending
 	;;
 	ld8.fill r18=[r2],16
 	ld8.fill r19=[r3],16
@@ -582,7 +563,7 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	ld8.fill r30=[r2],16
 	ld8.fill r31=[r3],16
 	;;
-	rsm psr.i | psr.ic	// initiate turning off of interrupts & interruption collection
+	rsm psr.i | psr.ic	// initiate turning off of interrupt and interruption collection
 	invala			// invalidate ALAT
 	;;
 	ld8 r1=[r2],16		// ar.ccv
@@ -601,7 +582,7 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	mov ar.fpsr=r13
 	mov b0=r14
 	;;
-	srlz.i			// ensure interrupts & interruption collection are off
+	srlz.i			// ensure interruption collection is off
 	mov b7=r15
 	;;
 	bsw.0			// switch back to bank 0
@@ -729,6 +710,25 @@ skip_rbs_switch:
 	mov ar.unat=rARUNAT
 	mov pr=rARPR,-1
 	rfi
+
+.work_pending:
+	tbit.z p6,p0=r18,TIF_NEED_RESCHED		// current_thread_info()->need_resched==0?
+(p6)	br.cond.sptk.few .notify
+#if __GNUC__ < 3
+	br.call.spnt.many rp=invoke_schedule
+#else
+	br.call.spnt.many rp=schedule
+#endif
+.ret9:	cmp.eq p6,p0=r0,r0				// p6 <- 1
+	rsm psr.i
+	;;
+	adds r17=TI_FLAGS+IA64_TASK_SIZE,r13
+	br.cond.sptk.many .work_processed		// re-check
+
+.notify:
+	br.call.spnt.many rp=notify_resume_user
+.ret10:	cmp.ne p6,p0=r0,r0				// p6 <- 0
+	br.cond.sptk.many .work_processed		// don't re-check
 END(ia64_leave_kernel)
 
 ENTRY(handle_syscall_error)
@@ -802,7 +802,7 @@ END(invoke_schedule)
 	 * be set up by the caller.  We declare 8 input registers so the system call
 	 * args get preserved, in case we need to restart a system call.
 	 */
-ENTRY(handle_signal_delivery)
+ENTRY(notify_resume_user)
 	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
 	alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs in case of syscall restart!
 	mov r9=ar.unat
@@ -816,17 +816,17 @@ ENTRY(handle_signal_delivery)
 	.spillpsp ar.unat, 16			// (note that offset is relative to psp+0x10!)
 	st8 [sp]=r9,-16				// allocate space for ar.unat and save it
 	.body
-#error	br.call.sptk.many rp=ia64_do_signal
+	br.call.sptk.many rp=do_notify_resume_user
 .ret15:	.restore sp
 	adds sp=16,sp				// pop scratch stack space
 	;;
-	ld8 r9=[sp]				// load new unat from sw->caller_unat
+	ld8 r9=[sp]				// load new unat from sigscratch->scratch_unat
 	mov rp=loc0
 	;;
 	mov ar.unat=r9
 	mov ar.pfs=loc1
 	br.ret.sptk.many rp
-END(handle_signal_delivery)
+END(do_notify_resume_user)
 
 GLOBAL_ENTRY(sys_rt_sigsuspend)
 	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
@@ -1033,9 +1033,9 @@ sys_call_table:
 	data8 sys_syslog
 	data8 sys_setitimer
 	data8 sys_getitimer
-	data8 ia64_oldstat			// 1120
-	data8 ia64_oldlstat
-	data8 ia64_oldfstat
+	data8 ia64_ni_syscall			// 1120		/* was: ia64_oldstat */
+	data8 ia64_ni_syscall					/* was: ia64_oldlstat */
+	data8 ia64_ni_syscall					/* was: ia64_oldfstat */
 	data8 sys_vhangup
 	data8 sys_lchown
 	data8 sys_vm86				// 1125
@@ -1130,19 +1130,23 @@ sys_call_table:
 	data8 sys_getdents64
 	data8 sys_getunwind			// 1215
 	data8 sys_readahead
+	data8 sys_setxattr
+	data8 sys_lsetxattr
+	data8 sys_fsetxattr
+	data8 sys_getxattr			// 1220
+	data8 sys_lgetxattr
+	data8 sys_fgetxattr
+	data8 sys_listxattr
+	data8 sys_llistxattr
+	data8 sys_flistxattr			// 1225
+	data8 sys_removexattr
+	data8 sys_lremovexattr
+	data8 sys_fremovexattr
+#if 0
 	data8 sys_tkill
+#else
 	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall			// 1220
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall			// 1225
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
-	data8 ia64_ni_syscall
+#endif
 	data8 ia64_ni_syscall			// 1230
 	data8 ia64_ni_syscall
 	data8 ia64_ni_syscall

arch/ia64/kernel/gate.S

@@ -90,7 +90,7 @@ GLOBAL_ENTRY(ia64_sigtramp)
 (p8)	br.cond.spnt setup_rbs		// yup -> (clobbers r14, r15, and r16)
 back_from_setup_rbs:
 
-	.save ar.pfs, r8
+	.spillreg ar.pfs, r8
 	alloc r8=ar.pfs,0,0,3,0		// get CFM0, EC0, and CPL0 into r8
 	ld8 out0=[base0],16		// load arg0 (signum)
 	adds base1=(ARG1_OFF-(RBS_BASE_OFF+SIGCONTEXT_OFF)),base1

arch/ia64/kernel/head.S

@@ -127,23 +127,21 @@ start_ap:
 #ifdef CONFIG_SMP
 	/*
 	 * Find the init_task for the currently booting CPU.  At poweron, and in
-	 * UP mode, cpucount is 0.
+	 * UP mode, task_for_booting_cpu is NULL.
 	 */
-	movl r3=cpucount
+	movl r3=task_for_booting_cpu
  	;;
-	ld4 r3=[r3]		// r3 <- smp_processor_id()
-	movl r2=init_tasks
+	ld8 r3=[r3]
+	movl r2=init_thread_union
 	;;
-	shladd r2=r3,3,r2
+	cmp.eq isBP,isAP=r3,r0
 	;;
-	ld8 r2=[r2]
+(isAP)	mov r2=r3
 #else
-	mov r3=0
-	movl r2=init_task_union
-	;;
+	movl r2=init_thread_union
+	cmp.eq isBP,isAP=r0,r0
 #endif
-	cmp4.ne isAP,isBP=r3,r0
-	;;			// RAW on r2
+	;;
 	extr r3=r2,0,61		// r3 == phys addr of task struct
 	mov r16=KERNEL_TR_PAGE_NUM
 	;;
@@ -180,10 +178,12 @@ start_ap:
 	.rodata
 alive_msg:
 	stringz "I'm alive and well\n"
+alive_msg_end:
 	.previous
 
 	alloc r2=ar.pfs,0,0,2,0
 	movl out0=alive_msg
+	movl out1=alive_msg_end-alive_msg-1
 	;;
 	br.call.sptk.many rp=early_printk
 1:	// force new bundle

arch/ia64/kernel/ia64_ksyms.c

@@ -24,6 +24,7 @@ EXPORT_SYMBOL(strnlen);
 EXPORT_SYMBOL(strrchr);
 EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(strtok);
+EXPORT_SYMBOL(strpbrk);
 
 #include <linux/irq.h>
 EXPORT_SYMBOL(isa_irq_to_vector_map);

arch/ia64/kernel/init_task.c

@@ -2,8 +2,8 @@
  * This is where we statically allocate and initialize the initial
  * task.
  *
- * Copyright (C) 1999 Hewlett-Packard Co
- * Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
 #include <linux/init.h>
@@ -22,10 +22,20 @@ struct mm_struct init_mm = INIT_MM(init_mm);
 /*
  * Initial task structure.
  *
- * We need to make sure that this is page aligned due to the way
- * process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
+ * We need to make sure that this is properly aligned due to the way process stacks are
+ * handled. This is done by having a special ".data.init_task" section...
  */
-union task_union init_task_union
-	__attribute__((section("init_task"))) =
-		{ INIT_TASK(init_task_union.task) };
+#define init_thread_info	init_thread_union.s.thread_info
+
+union init_thread {
+	struct {
+		struct task_struct task;
+		struct thread_info thread_info;
+	} 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)
+}};
+
+asm (".global init_task; init_task = init_thread_union");

arch/ia64/kernel/irq.c

@@ -161,7 +161,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		for (action=action->next; action; action = action->next)
 			seq_printf(p, ", %s", action->name);
-		seq_putc('\n');
+		seq_putc(p, '\n');
 	}
 	seq_puts(p, "NMI: ");
 	for (j = 0; j < smp_num_cpus; j++)
@@ -287,10 +287,11 @@ static inline void wait_on_irq(void)
 		 * already executing in one..
 		 */
 		if (!irqs_running())
-			if (local_bh_count() || !spin_is_locked(&global_bh_lock))
+			if (really_local_bh_count() || !spin_is_locked(&global_bh_lock))
 				break;
 
 		/* Duh, we have to loop. Release the lock to avoid deadlocks */
+		smp_mb__before_clear_bit();	/* need barrier before releasing lock... */
 		clear_bit(0,&global_irq_lock);
 
 		for (;;) {
@@ -305,7 +306,7 @@ static inline void wait_on_irq(void)
 				continue;
 			if (global_irq_lock)
 				continue;
-			if (!local_bh_count() && spin_is_locked(&global_bh_lock))
+			if (!really_local_bh_count() && spin_is_locked(&global_bh_lock))
 				continue;
 			if (!test_and_set_bit(0,&global_irq_lock))
 				break;
@@ -378,14 +379,14 @@ void __global_cli(void)
 	__save_flags(flags);
 	if (flags & IA64_PSR_I) {
 		__cli();
-		if (!local_irq_count())
+		if (!really_local_irq_count())
 			get_irqlock();
 	}
 #else
 	__save_flags(flags);
 	if (flags & (1 << EFLAGS_IF_SHIFT)) {
 		__cli();
-		if (!local_irq_count())
+		if (!really_local_irq_count())
 			get_irqlock();
 	}
 #endif
@@ -393,7 +394,7 @@ void __global_cli(void)
 
 void __global_sti(void)
 {
-	if (!local_irq_count())
+	if (!really_local_irq_count())
 		release_irqlock(smp_processor_id());
 	__sti();
 }
@@ -422,7 +423,7 @@ unsigned long __global_save_flags(void)
 	retval = 2 + local_enabled;
 
 	/* check for global flags if we're not in an interrupt */
-	if (!local_irq_count()) {
+	if (!really_local_irq_count()) {
 		if (local_enabled)
 			retval = 1;
 		if (global_irq_holder == cpu)
@@ -529,7 +530,7 @@ void disable_irq(unsigned int irq)
 	disable_irq_nosync(irq);
 
 #ifdef CONFIG_SMP
-	if (!local_irq_count()) {
+	if (!really_local_irq_count()) {
 		do {
 			barrier();
 		} while (irq_desc(irq)->status & IRQ_INPROGRESS);
@@ -1009,6 +1010,11 @@ int setup_irq(unsigned int irq, struct irqaction * new)
 		rand_initialize_irq(irq);
 	}
 
+	if (new->flags & SA_PERCPU_IRQ) {
+		desc->status |= IRQ_PER_CPU;
+		desc->handler = &irq_type_ia64_lsapic;
+	}
+
 	/*
 	 * The following block of code has to be executed atomically
 	 */
@@ -1089,13 +1095,25 @@ static unsigned int parse_hex_value (const char *buffer,
 static struct proc_dir_entry * smp_affinity_entry [NR_IRQS];
 
 static unsigned long irq_affinity [NR_IRQS] = { [0 ... NR_IRQS-1] = ~0UL };
+static char irq_redir [NR_IRQS]; // = { [0 ... NR_IRQS-1] = 1 };
+
+void set_irq_affinity_info(int irq, int hwid, int redir)
+{
+	unsigned long mask = 1UL<<cpu_logical_id(hwid);
+
+	if (irq >= 0 && irq < NR_IRQS) {
+		irq_affinity[irq] = mask;
+		irq_redir[irq] = (char) (redir & 0xff);
+	}
+}
 
 static int irq_affinity_read_proc (char *page, char **start, off_t off,
 			int count, int *eof, void *data)
 {
-	if (count < HEX_DIGITS+1)
+	if (count < HEX_DIGITS+3)
 		return -EINVAL;
-	return sprintf (page, "%08lx\n", irq_affinity[(long)data]);
+	return sprintf (page, "%s%08lx\n", irq_redir[(long)data] ? "r " : "",
+			irq_affinity[(long)data]);
 }
 
 static int irq_affinity_write_proc (struct file *file, const char *buffer,
@@ -1103,11 +1121,20 @@ static int irq_affinity_write_proc (struct file *file, const char *buffer,
 {
 	int irq = (long) data, full_count = count, err;
 	unsigned long new_value;
+	const char *buf = buffer;
+	int redir;
 
 	if (!irq_desc(irq)->handler->set_affinity)
 		return -EIO;
 
-	err = parse_hex_value(buffer, count, &new_value);
+	if (buf[0] == 'r' || buf[0] == 'R') {
+		++buf;
+		while (*buf == ' ') ++buf;
+		redir = 1;
+	} else
+		redir = 0;
+
+	err = parse_hex_value(buf, count, &new_value);
 
 	/*
 	 * Do not allow disabling IRQs completely - it's a too easy
@@ -1117,8 +1144,7 @@ static int irq_affinity_write_proc (struct file *file, const char *buffer,
 	if (!(new_value & cpu_online_map))
 		return -EINVAL;
 
-	irq_affinity[irq] = new_value;
-	irq_desc(irq)->handler->set_affinity(irq, new_value);
+	irq_desc(irq)->handler->set_affinity(irq | (redir?(1<<31):0), new_value);
 
 	return full_count;
 }

arch/ia64/kernel/ivt.S

@@ -43,6 +43,7 @@
 #include <asm/processor.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
+#include <asm/thread_info.h>
 #include <asm/unistd.h>
 
 #if 1
@@ -275,6 +276,7 @@ ENTRY(alt_itlb_miss)
 	mov r16=cr.ifa		// get address that caused the TLB miss
 	movl r17=PAGE_KERNEL
 	mov r21=cr.ipsr
+	movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
 	mov r31=pr
 	;;
 #ifdef CONFIG_DISABLE_VHPT
@@ -289,12 +291,12 @@ ENTRY(alt_itlb_miss)
 (p8)	br.cond.dptk itlb_fault
 #endif
 	extr.u r23=r21,IA64_PSR_CPL0_BIT,2	// extract psr.cpl
+	and r19=r19,r16		// clear ed, reserved bits, and PTE control bits
 	shr.u r18=r16,57	// move address bit 61 to bit 4
-	dep r19=0,r16,IA64_MAX_PHYS_BITS,(64-IA64_MAX_PHYS_BITS)	// clear ed & reserved bits
 	;;
 	andcm r18=0x10,r18	// bit 4=~address-bit(61)
 	cmp.ne p8,p0=r0,r23	// psr.cpl != 0?
-	dep r19=r17,r19,0,12	// insert PTE control bits into r19
+	or r19=r17,r19		// insert PTE control bits into r19
 	;;
 	or r19=r19,r18		// set bit 4 (uncached) if the access was to region 6
 (p8)	br.cond.spnt page_fault
@@ -312,6 +314,7 @@ ENTRY(alt_dtlb_miss)
 	mov r16=cr.ifa		// get address that caused the TLB miss
 	movl r17=PAGE_KERNEL
 	mov r20=cr.isr
+	movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
 	mov r21=cr.ipsr
 	mov r31=pr
 	;;
@@ -328,15 +331,15 @@ ENTRY(alt_dtlb_miss)
 #endif
 	extr.u r23=r21,IA64_PSR_CPL0_BIT,2	// extract psr.cpl
 	tbit.nz p6,p7=r20,IA64_ISR_SP_BIT	// is speculation bit on?
+	and r19=r19,r16		// clear ed, reserved bits, and PTE control bits
 	shr.u r18=r16,57	// move address bit 61 to bit 4
-	dep r19=0,r16,IA64_MAX_PHYS_BITS,(64-IA64_MAX_PHYS_BITS) // clear ed & reserved bits
 	;;
 	andcm r18=0x10,r18	// bit 4=~address-bit(61)
 	cmp.ne p8,p0=r0,r23
 (p8)	br.cond.spnt page_fault
 
 	dep r21=-1,r21,IA64_PSR_ED_BIT,1
-	dep r19=r17,r19,0,12	// insert PTE control bits into r19
+	or r19=r19,r17		// insert PTE control bits into r19
 	;;
 	or r19=r19,r18		// set bit 4 (uncached) if the access was to region 6
 (p6)	mov cr.ipsr=r21
@@ -654,16 +657,16 @@ ENTRY(break_fault)
 	ld8 r16=[r16]				// load address of syscall entry point
 	mov rp=r15				// set the real return addr
 	;;
-	ld8 r2=[r2]				// r2 = current->ptrace
 	mov b6=r16
 
 	// arrange things so we skip over break instruction when returning:
 
 	adds r16=16,sp				// get pointer to cr_ipsr
 	adds r17=24,sp				// get pointer to cr_iip
+	add r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
 	ld8 r18=[r16]				// fetch cr_ipsr
-	tbit.z p8,p0=r2,PT_TRACESYS_BIT		// (current->ptrace & PF_TRACESYS) == 0?
+	ld4 r2=[r2]				// r2 = current_thread_info()->flags
 	;;
 	ld8 r19=[r17]				// fetch cr_iip
 	extr.u r20=r18,41,2			// extract ei field
@@ -676,6 +679,7 @@ ENTRY(break_fault)
 	;;
 (p6)	st8 [r17]=r19				// store new cr.iip if cr.isr.ei wrapped around
 	dep r18=r20,r18,41,2			// insert new ei into cr.isr
+	tbit.z p8,p0=r2,TIF_SYSCALL_TRACE
 	;;
 	st8 [r16]=r18				// store new value for cr.isr
 
@@ -855,16 +859,16 @@ ENTRY(dispatch_to_ia32_handler)
 	ld4 out5=[r14],8	// r13 == ebp
 	;;
 	ld4 out3=[r14],8	// r14 == esi
-	adds r2=IA64_TASK_PTRACE_OFFSET,r13	// r2 = &current->ptrace
+	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
 	ld4 out4=[r14]		// r15 == edi
 	movl r16=ia32_syscall_table
 	;;
 (p6)    shladd r16=r8,3,r16	// force ni_syscall if not valid syscall number
-	ld8 r2=[r2]		// r2 = current->ptrace
+	ld4 r2=[r2]		// r2 = current_thread_info()->flags
 	;;
 	ld8 r16=[r16]
-	tbit.z p8,p0=r2,PT_TRACESYS_BIT	// (current->ptrace & PT_TRACESYS) == 0?
+	tbit.z p8,p0=r2,TIF_SYSCALL_TRACE
 	;;
 	mov b6=r16
 	movl r15=ia32_ret_from_syscall

arch/ia64/kernel/minstate.h

@@ -92,7 +92,6 @@
  *
  * Assumed state upon entry:
  *	psr.ic: off
- *	psr.dt: off
  *	r31:	contains saved predicates (pr)
  *
  * Upon exit, the state is as follows:
@@ -186,7 +185,6 @@
  *
  * Assumed state upon entry:
  *	psr.ic: on
- *	psr.dt: on
  *	r2:	points to &pt_regs.r16
  *	r3:	points to &pt_regs.r17
  */

arch/ia64/kernel/palinfo.c

@@ -724,7 +724,7 @@ tr_info(char *page)
 
 		status = ia64_pal_tr_read(j, i, tr_buffer, &tr_valid);
 		if (status != 0) {
-			printk(__FUNCTION__ " pal call failed on tr[%d:%d]=%ld\n", i, j, status);
+			printk("palinfo: pal call failed on tr[%d:%d]=%ld\n", i, j, status);
 			continue;
 		}
 
@@ -842,9 +842,8 @@ static void
 palinfo_smp_call(void *info)
 {
 	palinfo_smp_data_t *data = (palinfo_smp_data_t *)info;
-	/* printk(__FUNCTION__" called on CPU %d\n", smp_processor_id());*/
 	if (data == NULL) {
-		printk(KERN_ERR __FUNCTION__" data pointer is NULL\n");
+		printk("%s palinfo: data pointer is NULL\n", KERN_ERR);
 		data->ret = 0; /* no output */
 		return;
 	}
@@ -868,11 +867,10 @@ int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page)
 	ptr.page = page;
 	ptr.ret  = 0; /* just in case */
 
-	/*printk(__FUNCTION__" calling CPU %d from CPU %d for function %d\n", f->req_cpu,smp_processor_id(), f->func_id);*/
 
 	/* will send IPI to other CPU and wait for completion of remote call */
 	if ((ret=smp_call_function_single(f->req_cpu, palinfo_smp_call, &ptr, 0, 1))) {
-		printk(__FUNCTION__" remote CPU call from %d to %d on function %d: error %d\n", smp_processor_id(), f->req_cpu, f->func_id, ret);
+		printk("palinfo: remote CPU call from %d to %d on function %d: error %d\n", smp_processor_id(), f->req_cpu, f->func_id, ret);
 		return 0;
 	}
 	return ptr.ret;
@@ -881,7 +879,7 @@ int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page)
 static
 int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page)
 {
-	printk(__FUNCTION__" should not be called with non SMP kernel\n");
+	printk("palinfo: should not be called with non SMP kernel\n");
 	return 0;
 }
 #endif /* CONFIG_SMP */

arch/ia64/kernel/process.c

 /*
  * Architecture-specific setup.
  *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 #define __KERNEL_SYSCALLS__	/* see <asm/unistd.h> */
 #include <linux/config.h>
@@ -12,14 +12,17 @@
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
+#include <linux/personality.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/stddef.h>
+#include <linux/thread_info.h>
 #include <linux/unistd.h>
 
 #include <asm/delay.h>
 #include <asm/efi.h>
+#include <asm/elf.h>
 #include <asm/perfmon.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
@@ -28,6 +31,16 @@
 #include <asm/unwind.h>
 #include <asm/user.h>
 
+#ifdef CONFIG_IA64_SGI_SN
+#include <asm/sn/idle.h>
+#endif
+
+#ifdef CONFIG_PERFMON
+# include <asm/perfmon.h>
+#endif
+
+#include "sigframe.h"
+
 static void
 do_show_stack (struct unw_frame_info *info, void *arg)
 {
@@ -45,6 +58,15 @@ do_show_stack (struct unw_frame_info *info, void *arg)
 	} while (unw_unwind(info) >= 0);
 }
 
+void
+show_trace_task (struct task_struct *task)
+{
+	struct unw_frame_info info;
+
+	unw_init_from_blocked_task(&info, task);
+	do_show_stack(&info, 0);
+}
+
 void
 show_stack (struct task_struct *task)
 {
@@ -90,8 +112,8 @@ show_regs (struct pt_regs *regs)
 	printk("r26 : %016lx r27 : %016lx r28 : %016lx\n", regs->r26, regs->r27, regs->r28);
 	printk("r29 : %016lx r30 : %016lx r31 : %016lx\n", regs->r29, regs->r30, regs->r31);
 
-	/* print the stacked registers if cr.ifs is valid: */
-	if (regs->cr_ifs & 0x8000000000000000) {
+	if (user_mode(regs)) {
+		/* print the stacked registers */
 		unsigned long val, sof, *bsp, ndirty;
 		int i, is_nat = 0;
 
@@ -103,32 +125,61 @@ show_regs (struct pt_regs *regs)
 			printk("r%-3u:%c%016lx%s", 32 + i, is_nat ? '*' : ' ', val,
 			       ((i == sof - 1) || (i % 3) == 2) ? "\n" : " ");
 		}
-	}
-	if (!user_mode(regs))
+	} else
 		show_stack(0);
 }
 
+void
+do_notify_resume_user (sigset_t *oldset, struct sigscratch *scr, long in_syscall)
+{
+#ifdef CONFIG_PERFMON
+	if (current->thread.pfm_ovfl_block_reset)
+		pfm_ovfl_block_reset();
+#endif
+
+	/* deal with pending signal delivery */
+	if (test_thread_flag(TIF_SIGPENDING))
+		ia64_do_signal(oldset, scr, in_syscall);
+}
+
+/*
+ * We use this if we don't have any better idle routine..
+ */
+static void
+default_idle (void)
+{
+	/* may want to do PAL_LIGHT_HALT here... */
+}
+
 void __attribute__((noreturn))
 cpu_idle (void *unused)
 {
 	/* endless idle loop with no priority at all */
-	init_idle();
-	current->nice = 20;
-
 	while (1) {
 #ifdef CONFIG_SMP
 		if (!need_resched())
 			min_xtp();
 #endif
-		while (!need_resched())
-			continue;
+
+		while (!need_resched()) {
+#ifdef CONFIG_IA64_SGI_SN
+			snidle();
+#endif
+			if (pm_idle)
+				(*pm_idle)();
+			else
+				default_idle();
+		}
+
+#ifdef CONFIG_IA64_SGI_SN
+		snidleoff();
+#endif
+
 #ifdef CONFIG_SMP
 		normal_xtp();
 #endif
 		schedule();
 		check_pgt_cache();
-		if (pm_idle)
-			(*pm_idle)();
 	}
 }
 
@@ -137,10 +188,14 @@ ia64_save_extra (struct task_struct *task)
 {
 	if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0)
 		ia64_save_debug_regs(&task->thread.dbr[0]);
+
 #ifdef CONFIG_PERFMON
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_save_regs(task);
+
+	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 0);
 #endif
+
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))
 		ia32_save_state(task);
 }
@@ -150,10 +205,14 @@ ia64_load_extra (struct task_struct *task)
 {
 	if ((task->thread.flags & IA64_THREAD_DBG_VALID) != 0)
 		ia64_load_debug_regs(&task->thread.dbr[0]);
+
 #ifdef CONFIG_PERFMON
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_load_regs(task);
+
+	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 1);
 #endif
+
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))
 		ia32_load_state(task);
 }
@@ -233,7 +292,7 @@ copy_thread (int nr, unsigned long clone_flags,
 
 	if (user_mode(child_ptregs)) {
 		if (user_stack_base) {
-			child_ptregs->r12 = user_stack_base + user_stack_size;
+			child_ptregs->r12 = user_stack_base + user_stack_size - 16;
 			child_ptregs->ar_bspstore = user_stack_base;
 			child_ptregs->ar_rnat = 0;
 			child_ptregs->loadrs = 0;
@@ -286,9 +345,15 @@ copy_thread (int nr, unsigned long clone_flags,
 	if (IS_IA32_PROCESS(ia64_task_regs(current)))
 		ia32_save_state(p);
 #endif
+
 #ifdef CONFIG_PERFMON
-	if (p->thread.pfm_context)
-		retval = pfm_inherit(p, child_ptregs);
+	/*
+	 * reset notifiers and owner check (may not have a perfmon context)
+	 */
+	atomic_set(&p->thread.pfm_notifiers_check, 0);
+	atomic_set(&p->thread.pfm_owners_check, 0);
+
+	if (current->thread.pfm_context) retval = pfm_inherit(p, child_ptregs);
 #endif
 	return retval;
 }
@@ -412,6 +477,16 @@ sys_execve (char *filename, char **argv, char **envp, struct pt_regs *regs)
 	return error;
 }
 
+void
+ia64_set_personality (struct elf64_hdr *elf_ex, int ibcs2_interpreter)
+{
+	set_personality(PER_LINUX);
+	if (elf_ex->e_flags & EF_IA_64_LINUX_EXECUTABLE_STACK)
+		current->thread.flags |= IA64_THREAD_XSTACK;
+	else
+		current->thread.flags &= ~IA64_THREAD_XSTACK;
+}
+
 pid_t
 kernel_thread (int (*fn)(void *), void *arg, unsigned long flags)
 {
@@ -443,15 +518,15 @@ flush_thread (void)
 
 #ifdef CONFIG_PERFMON
 /*
- * By the time we get here, the task is detached from the tasklist. This is important
- * because it means that no other tasks can ever find it as a notifiied task, therfore
- * there is no race condition between this code and let's say a pfm_context_create().
- * Conversely, the pfm_cleanup_notifiers() cannot try to access a task's pfm context if
- * this other task is in the middle of its own pfm_context_exit() because it would alreayd
- * be out of the task list. Note that this case is very unlikely between a direct child
- * and its parents (if it is the notified process) because of the way the exit is notified
- * via SIGCHLD.
+ * by the time we get here, the task is detached from the tasklist. This is important
+ * because it means that no other tasks can ever find it as a notified task, therfore there
+ * is no race condition between this code and let's say a pfm_context_create().
+ * Conversely, the pfm_cleanup_notifiers() cannot try to access a task's pfm context if this
+ * other task is in the middle of its own pfm_context_exit() because it would already be out of
+ * the task list. Note that this case is very unlikely between a direct child and its parents
+ * (if it is the notified process) because of the way the exit is notified via SIGCHLD.
  */
+
 void
 release_thread (struct task_struct *task)
 {
@@ -460,6 +535,12 @@ release_thread (struct task_struct *task)
 
 	if (atomic_read(&task->thread.pfm_notifiers_check) > 0)
 		pfm_cleanup_notifiers(task);
+
+	if (atomic_read(&task->thread.pfm_owners_check) > 0)
+		pfm_cleanup_owners(task);
+
+	if (task->thread.pfm_smpl_buf_list)
+		pfm_cleanup_smpl_buf(task);
 }
 #endif
 
@@ -475,21 +556,13 @@ exit_thread (void)
 		ia64_set_fpu_owner(0);
 #endif
 #ifdef CONFIG_PERFMON
-       /* stop monitoring */
-	if ((current->thread.flags & IA64_THREAD_PM_VALID) != 0) {
-		/*
-		 * we cannot rely on switch_to() to save the PMU
-		 * context for the last time. There is a possible race
-		 * condition in SMP mode between the child and the
-		 * parent.  by explicitly saving the PMU context here
-		 * we garantee no race.  this call we also stop
-		 * monitoring
-		 */
+       /* if needed, stop monitoring and flush state to perfmon context */
+	if (current->thread.pfm_context) 
 		pfm_flush_regs(current);
-		/*
-		 * make sure that switch_to() will not save context again
-		 */
-		current->thread.flags &= ~IA64_THREAD_PM_VALID;
+
+	/* free debug register resources */
+	if ((current->thread.flags & IA64_THREAD_DBG_VALID) != 0) {
+		pfm_release_debug_registers(current);
 	}
 #endif
 }
@@ -571,3 +644,29 @@ machine_power_off (void)
 		pm_power_off();
 	machine_halt();
 }
+
+void __init
+init_task_struct_cache (void)
+{
+}
+
+struct task_struct *
+dup_task_struct(struct task_struct *orig)
+{
+	struct task_struct *tsk;
+
+	tsk = __get_free_pages(GFP_KERNEL, KERNEL_STACK_SIZE_ORDER);
+	if (!tsk)
+		return NULL;
+
+	memcpy(tsk, orig, sizeof(struct task_struct) + sizeof(struct thread_info));
+	tsk->thread_info = (struct thread_info *) ((char *) tsk + IA64_TASK_SIZE);
+	atomic_set(&tsk->usage, 1);
+	return tsk;
+}
+
+void
+__put_task_struct (struct task_struct *tsk)
+{
+	free_pages((unsigned long) tsk, KERNEL_STACK_SIZE_ORDER);
+}

arch/ia64/kernel/sal.c

@@ -18,7 +18,8 @@
 #include <asm/sal.h>
 #include <asm/pal.h>
 
-spinlock_t sal_lock = SPIN_LOCK_UNLOCKED;
+spinlock_t sal_lock __cacheline_aligned = SPIN_LOCK_UNLOCKED;
+unsigned long sal_platform_features;
 
 static struct {
 	void *addr;	/* function entry point */
@@ -76,7 +77,7 @@ ia64_sal_strerror (long status)
 	return str;
 }
 
-static void __init 
+static void __init
 ia64_sal_handler_init (void *entry_point, void *gpval)
 {
 	/* fill in the SAL procedure descriptor and point ia64_sal to it: */
@@ -102,7 +103,7 @@ ia64_sal_init (struct ia64_sal_systab *systab)
 	if (strncmp(systab->signature, "SST_", 4) != 0)
 		printk("bad signature in system table!");
 
-	/* 
+	/*
 	 * revisions are coded in BCD, so %x does the job for us
 	 */
 	printk("SAL v%x.%02x: oem=%.32s, product=%.32s\n",
@@ -152,12 +153,12 @@ ia64_sal_init (struct ia64_sal_systab *systab)
 		      case SAL_DESC_PLATFORM_FEATURE:
 		      {
 			      struct ia64_sal_desc_platform_feature *pf = (void *) p;
+			      sal_platform_features = pf->feature_mask;
 			      printk("SAL: Platform features ");
 
-			      if (pf->feature_mask & (1 << 0))
+			      if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
 				      printk("BusLock ");
-
-			      if (pf->feature_mask & (1 << 1)) {
+			      if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
 				      printk("IRQ_Redirection ");
 #ifdef CONFIG_SMP
 				      if (no_int_routing)
@@ -166,15 +167,17 @@ ia64_sal_init (struct ia64_sal_systab *systab)
 					      smp_int_redirect |= SMP_IRQ_REDIRECTION;
 #endif
 			      }
-			      if (pf->feature_mask & (1 << 2)) {
+			      if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
 				      printk("IPI_Redirection ");
 #ifdef CONFIG_SMP
-				      if (no_int_routing) 
+				      if (no_int_routing)
 					      smp_int_redirect &= ~SMP_IPI_REDIRECTION;
 				      else
 					      smp_int_redirect |= SMP_IPI_REDIRECTION;
 #endif
 			      }
+			      if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
+				      printk("ITC_Drift ");
 			      printk("\n");
 			      break;
  		      }

arch/ia64/kernel/salinfo.c

+/*
+ * salinfo.c
+ *
+ * Creates entries in /proc/sal for various system features.
+ *
+ * Copyright (c) 2001 Silicon Graphics, Inc.  All rights reserved.
+ *
+ * 10/30/2001	jbarnes@sgi.com		copied much of Stephane's palinfo
+ *					code to create this file
+ */
+
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/module.h>
+
+#include <asm/sal.h>
+
+MODULE_AUTHOR("Jesse Barnes <jbarnes@sgi.com>");
+MODULE_DESCRIPTION("/proc interface to IA-64 SAL features");
+MODULE_LICENSE("GPL");
+
+static int salinfo_read(char *page, char **start, off_t off, int count, int *eof, void *data);
+
+typedef struct {
+	const char		*name;		/* name of the proc entry */
+	unsigned long           feature;        /* feature bit */
+	struct proc_dir_entry	*entry;		/* registered entry (removal) */
+} salinfo_entry_t;
+
+/*
+ * List {name,feature} pairs for every entry in /proc/sal/<feature>
+ * that this module exports
+ */
+static salinfo_entry_t salinfo_entries[]={
+	{ "bus_lock",           IA64_SAL_PLATFORM_FEATURE_BUS_LOCK, },
+	{ "irq_redirection",	IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT, },
+	{ "ipi_redirection",	IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT, },
+	{ "itc_drift",		IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT, },
+};
+
+#define NR_SALINFO_ENTRIES (sizeof(salinfo_entries)/sizeof(salinfo_entry_t))
+
+/*
+ * One for each feature and one more for the directory entry...
+ */
+static struct proc_dir_entry *salinfo_proc_entries[NR_SALINFO_ENTRIES + 1];
+
+static int __init
+salinfo_init(void)
+{
+	struct proc_dir_entry *salinfo_dir; /* /proc/sal dir entry */
+	struct proc_dir_entry **sdir = salinfo_proc_entries; /* keeps track of every entry */
+	int i;
+
+	salinfo_dir = proc_mkdir("sal", NULL);
+
+	for (i=0; i < NR_SALINFO_ENTRIES; i++) {
+		/* pass the feature bit in question as misc data */
+		*sdir++ = create_proc_read_entry (salinfo_entries[i].name, 0, salinfo_dir,
+						  salinfo_read, (void *)salinfo_entries[i].feature);
+	}
+	*sdir++ = salinfo_dir;
+
+	return 0;
+}
+
+static void __exit
+salinfo_exit(void)
+{
+	int i = 0;
+
+	for (i = 0; i < NR_SALINFO_ENTRIES ; i++) {
+		if (salinfo_proc_entries[i])
+			remove_proc_entry (salinfo_proc_entries[i]->name, NULL);
+	}
+}
+
+/*
+ * 'data' contains an integer that corresponds to the feature we're
+ * testing
+ */
+static int
+salinfo_read(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	int len = 0;
+
+	MOD_INC_USE_COUNT;
+
+	len = sprintf(page, (sal_platform_features & (unsigned long)data) ? "1\n" : "0\n");
+
+	if (len <= off+count) *eof = 1;
+
+	*start = page + off;
+	len   -= off;
+
+	if (len>count) len = count;
+	if (len<0) len = 0;
+
+	MOD_DEC_USE_COUNT;
+
+	return len;
+}
+
+module_init(salinfo_init);
+module_exit(salinfo_exit);

arch/ia64/kernel/setup.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998-2001 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1998, 1999, 2001 Stephane Eranian <eranian@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
  * Copyright (C) 2000, Rohit Seth <rohit.seth@intel.com>
  * Copyright (C) 1999 VA Linux Systems
  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 
 #include <linux/bootmem.h>
+#include <linux/console.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/reboot.h>
@@ -27,7 +28,7 @@
 #include <linux/seq_file.h>
 #include <linux/string.h>
 #include <linux/threads.h>
-#include <linux/console.h>
+#include <linux/tty.h>
 
 #include <asm/acpi-ext.h>
 #include <asm/ia32.h>
@@ -147,6 +148,10 @@ free_available_memory (unsigned long start, unsigned long end, void *arg)
 }
 
 
+/*
+ * Find a place to put the bootmap and return its starting address in bootmap_start.
+ * This address must be page-aligned.
+ */
 static int
 find_bootmap_location (unsigned long start, unsigned long end, void *arg)
 {
@@ -165,7 +170,7 @@ find_bootmap_location (unsigned long start, unsigned long end, void *arg)
 
 	for (i = 0; i < num_rsvd_regions; i++) {
 		range_start = MAX(start, free_start);
-		range_end   = MIN(end, rsvd_region[i].start);
+		range_end   = MIN(end, rsvd_region[i].start & PAGE_MASK);
 
 		if (range_end <= range_start) continue;	/* skip over empty range */
 
@@ -177,7 +182,7 @@ find_bootmap_location (unsigned long start, unsigned long end, void *arg)
 		/* nothing more available in this segment */
 		if (range_end == end) return 0;
 
-		free_start = rsvd_region[i].end;
+		free_start = PAGE_ALIGN(rsvd_region[i].end);
 	}
 	return 0;
 }
@@ -306,6 +311,10 @@ setup_arch (char **cmdline_p)
 	/* process SAL system table: */
 	ia64_sal_init(efi.sal_systab);
 
+#ifdef CONFIG_IA64_GENERIC
+	machvec_init(acpi_get_sysname());
+#endif
+
 	/*
 	 *  Set `iobase' to the appropriate address in region 6
 	 *    (uncached access range)
@@ -332,10 +341,6 @@ setup_arch (char **cmdline_p)
 
 	cpu_init();	/* initialize the bootstrap CPU */
 
-#ifdef CONFIG_IA64_GENERIC
-	machvec_init(acpi_get_sysname());
-#endif
-
 	if (efi.acpi20) {
 		/* Parse the ACPI 2.0 tables */
 		acpi20_parse(efi.acpi20);
@@ -371,17 +376,14 @@ show_cpuinfo (struct seq_file *m, void *v)
 {
 #ifdef CONFIG_SMP
 #	define lpj	c->loops_per_jiffy
+#	define cpunum	c->cpu
 #else
 #	define lpj	loops_per_jiffy
+#	define cpunum	0
 #endif
 	char family[32], features[128], *cp;
 	struct cpuinfo_ia64 *c = v;
-	unsigned long mask, cpu = c - cpu_data(0);
-
-#ifdef CONFIG_SMP
-	if (!(cpu_online_map & (1 << cpu)))
-		return 0;
-#endif
+	unsigned long mask;
 
 	mask = c->features;
 
@@ -403,7 +405,7 @@ show_cpuinfo (struct seq_file *m, void *v)
 		sprintf(cp, " 0x%lx", mask);
 
 	seq_printf(m,
-		   "processor  : %lu\n"
+		   "processor  : %d\n"
 		   "vendor     : %s\n"
 		   "arch       : IA-64\n"
 		   "family     : %s\n"
@@ -416,7 +418,7 @@ show_cpuinfo (struct seq_file *m, void *v)
 		   "cpu MHz    : %lu.%06lu\n"
 		   "itc MHz    : %lu.%06lu\n"
 		   "BogoMIPS   : %lu.%02lu\n\n",
-		   cpu, c->vendor, family, c->model, c->revision, c->archrev,
+		   cpunum, c->vendor, family, c->model, c->revision, c->archrev,
 		   features, c->ppn, c->number,
 		   c->proc_freq / 1000000, c->proc_freq % 1000000,
 		   c->itc_freq / 1000000, c->itc_freq % 1000000,
@@ -427,6 +429,10 @@ show_cpuinfo (struct seq_file *m, void *v)
 static void *
 c_start (struct seq_file *m, loff_t *pos)
 {
+#ifdef CONFIG_SMP
+	while (*pos < NR_CPUS && !(cpu_online_map & (1 << *pos)))
+		++*pos;
+#endif
 	return *pos < NR_CPUS ? cpu_data(*pos) : NULL;
 }
 
@@ -483,6 +489,9 @@ identify_cpu (struct cpuinfo_ia64 *c)
 		cpuid.bits[i] = ia64_get_cpuid(i);
 
 	memcpy(c->vendor, cpuid.field.vendor, 16);
+#ifdef CONFIG_SMP
+	c->cpu = smp_processor_id();
+#endif
 	c->ppn = cpuid.field.ppn;
 	c->number = cpuid.field.number;
 	c->revision = cpuid.field.revision;
@@ -534,7 +543,7 @@ cpu_init (void)
 				= alloc_bootmem_pages_node(NODE_DATA(numa_node_id()),
 							   sizeof(struct cpuinfo_ia64));
 		for (cpu = 1; cpu < NR_CPUS; ++cpu)
-			memcpy(my_cpu_data->cpu_data[cpu]->cpu_data_ptrs,
+			memcpy(my_cpu_data->cpu_data[cpu]->cpu_data,
 			       my_cpu_data->cpu_data, sizeof(my_cpu_data->cpu_data));
 	} else {
 		order = get_order(sizeof(struct cpuinfo_ia64));
@@ -577,6 +586,8 @@ cpu_init (void)
 
 	atomic_inc(&init_mm.mm_count);
 	current->active_mm = &init_mm;
+	if (current->mm)
+		BUG();
 
 	ia64_mmu_init(my_cpu_data);
 
@@ -616,4 +627,6 @@ cpu_init (void)
 		num_phys_stacked = 96;
 	}
 	local_cpu_data->phys_stacked_size_p8 = num_phys_stacked*8 + 8;
+
+	platform_cpu_init();
 }

arch/ia64/kernel/sigframe.h

@@ -21,3 +21,5 @@ struct sigframe {
 	struct siginfo info;
 	struct sigcontext sc;
 };
+
+extern long ia64_do_signal (sigset_t *, struct sigscratch *, long);

arch/ia64/kernel/signal.c

 /*
  * Architecture-specific signal handling support.
  *
- * Copyright (C) 1999-2001 Hewlett-Packard Co
+ * Copyright (C) 1999-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * Derived from i386 and Alpha versions.
@@ -17,6 +17,8 @@
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/stddef.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
 #include <linux/unistd.h>
 #include <linux/wait.h>
 
@@ -39,8 +41,6 @@
 # define GET_SIGSET(k,u)	__get_user((k)->sig[0], &(u)->sig[0])
 #endif
 
-extern long ia64_do_signal (sigset_t *, struct sigscratch *, long);	/* forward decl */
-
 long
 ia64_rt_sigsuspend (sigset_t *uset, size_t sigsetsize, struct sigscratch *scr)
 {
@@ -160,6 +160,7 @@ copy_siginfo_to_user (siginfo_t *to, siginfo_t *from)
 		err |= __put_user((short)from->si_code, &to->si_code);
 		switch (from->si_code >> 16) {
 		      case __SI_FAULT >> 16:
+			err |= __put_user(from->si_flags, &to->si_flags);
 			err |= __put_user(from->si_isr, &to->si_isr);
 		      case __SI_POLL >> 16:
 			err |= __put_user(from->si_addr, &to->si_addr);
@@ -172,7 +173,12 @@ copy_siginfo_to_user (siginfo_t *to, siginfo_t *from)
 		      case __SI_PROF >> 16:
 			err |= __put_user(from->si_uid, &to->si_uid);
 			err |= __put_user(from->si_pid, &to->si_pid);
-			err |= __put_user(from->si_pfm_ovfl, &to->si_pfm_ovfl);
+			if (from->si_code == PROF_OVFL) {
+				err |= __put_user(from->si_pfm_ovfl[0], &to->si_pfm_ovfl[0]);
+				err |= __put_user(from->si_pfm_ovfl[1], &to->si_pfm_ovfl[1]);
+				err |= __put_user(from->si_pfm_ovfl[2], &to->si_pfm_ovfl[2]);
+				err |= __put_user(from->si_pfm_ovfl[3], &to->si_pfm_ovfl[3]);
+			}
 			break;
 		      default:
 			err |= __put_user(from->si_uid, &to->si_uid);
@@ -239,7 +245,7 @@ ia64_rt_sigreturn (struct sigscratch *scr)
 	 * could be corrupted.
 	 */
 	retval = (long) &ia64_leave_kernel;
-	if (current->ptrace & PT_TRACESYS)
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		/*
 		 * strace expects to be notified after sigreturn returns even though the
 		 * context to which we return may not be in the middle of a syscall.

arch/ia64/kernel/smp.c

@@ -29,6 +29,7 @@
 #include <linux/smp.h>
 #include <linux/kernel_stat.h>
 #include <linux/mm.h>
+#include <linux/cache.h>
 #include <linux/delay.h>
 #include <linux/cache.h>
 
@@ -38,7 +39,6 @@
 #include <asm/delay.h>
 #include <asm/efi.h>
 #include <asm/machvec.h>
-
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/page.h>
@@ -51,14 +51,19 @@
 #include <asm/unistd.h>
 #include <asm/mca.h>
 
-/* The 'big kernel lock' */
-spinlock_t kernel_flag __cacheline_aligned_in_smp = SPIN_LOCK_UNLOCKED;
+/*
+ * The Big Kernel Lock.  It's not supposed to be used for performance critical stuff
+ * anymore.  But we still need to align it because certain workloads are still affected by
+ * it.  For example, llseek() and various other filesystem related routines still use the
+ * BKL.
+ */
+spinlock_t kernel_flag __cacheline_aligned = SPIN_LOCK_UNLOCKED;
 
 /*
  * Structure and data for smp_call_function(). This is designed to minimise static memory
  * requirements. It also looks cleaner.
  */
-static spinlock_t call_lock = SPIN_LOCK_UNLOCKED;
+static spinlock_t call_lock __cacheline_aligned = SPIN_LOCK_UNLOCKED;
 
 struct call_data_struct {
 	void (*func) (void *info);
@@ -70,8 +75,12 @@ struct call_data_struct {
 
 static volatile struct call_data_struct *call_data;
 
+static spinlock_t migration_lock = SPIN_LOCK_UNLOCKED;
+static task_t *migrating_task;
+
 #define IPI_CALL_FUNC		0
 #define IPI_CPU_STOP		1
+#define IPI_MIGRATE_TASK	2
 
 static void
 stop_this_cpu (void)
@@ -98,51 +107,60 @@ handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 
 	mb();	/* Order interrupt and bit testing. */
 	while ((ops = xchg(pending_ipis, 0)) != 0) {
-	  mb();	/* Order bit clearing and data access. */
-	  do {
-		unsigned long which;
-
-		which = ffz(~ops);
-		ops &= ~(1 << which);
-
-		switch (which) {
-		case IPI_CALL_FUNC:
-			{
-				struct call_data_struct *data;
-				void (*func)(void *info);
-				void *info;
-				int wait;
-
-				/* release the 'pointer lock' */
-				data = (struct call_data_struct *) call_data;
-				func = data->func;
-				info = data->info;
-				wait = data->wait;
-
-				mb();
-				atomic_inc(&data->started);
-
-				/* At this point the structure may be gone unless wait is true.  */
-				(*func)(info);
-
-				/* Notify the sending CPU that the task is done.  */
-				mb();
-				if (wait)
-					atomic_inc(&data->finished);
+		mb();	/* Order bit clearing and data access. */
+		do {
+			unsigned long which;
+
+			which = ffz(~ops);
+			ops &= ~(1 << which);
+
+			switch (which) {
+			      case IPI_CALL_FUNC:
+			      {
+				      struct call_data_struct *data;
+				      void (*func)(void *info);
+				      void *info;
+				      int wait;
+
+				      /* release the 'pointer lock' */
+				      data = (struct call_data_struct *) call_data;
+				      func = data->func;
+				      info = data->info;
+				      wait = data->wait;
+
+				      mb();
+				      atomic_inc(&data->started);
+				      /*
+				       * At this point the structure may be gone unless
+				       * wait is true.
+				       */
+				      (*func)(info);
+
+				      /* Notify the sending CPU that the task is done.  */
+				      mb();
+				      if (wait)
+					      atomic_inc(&data->finished);
+			      }
+			      break;
+
+			      case IPI_MIGRATE_TASK:
+			      {
+				      task_t *p = migrating_task;
+				      spin_unlock(&migration_lock);
+				      sched_task_migrated(p);
+			      }
+			      break;
+
+			      case IPI_CPU_STOP:
+				stop_this_cpu();
+				break;
+
+			      default:
+				printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which);
+				break;
 			}
-			break;
-
-		case IPI_CPU_STOP:
-			stop_this_cpu();
-			break;
-
-		default:
-			printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which);
-			break;
-		} /* Switch */
-	  } while (ops);
-
-	  mb();	/* Order data access and bit testing. */
+		} while (ops);
+		mb();	/* Order data access and bit testing. */
 	}
 }
 
@@ -185,10 +203,25 @@ smp_send_reschedule (int cpu)
 	platform_send_ipi(cpu, IA64_IPI_RESCHEDULE, IA64_IPI_DM_INT, 0);
 }
 
+/*
+ * This function sends a reschedule IPI to all (other) CPUs.  This should only be used if
+ * some 'global' task became runnable, such as a RT task, that must be handled now. The
+ * first CPU that manages to grab the task will run it.
+ */
+void
+smp_send_reschedule_all (void)
+{
+	int i;
+
+	for (i = 0; i < smp_num_cpus; i++)
+		if (i != smp_processor_id())
+			smp_send_reschedule(i);
+}
+
 void
 smp_flush_tlb_all (void)
 {
-	smp_call_function ((void (*)(void *))__flush_tlb_all,0,1,1);
+	smp_call_function((void (*)(void *))__flush_tlb_all, 0, 1, 1);
 	__flush_tlb_all();
 }
 
@@ -317,6 +350,15 @@ smp_send_stop (void)
 	smp_num_cpus = 1;
 }
 
+void
+smp_migrate_task (int cpu, task_t *p)
+{
+	/* The target CPU will unlock the migration spinlock: */
+	spin_lock(&migration_lock);
+	migrating_task = p;
+	send_IPI_single(cpu, IPI_MIGRATE_TASK);
+}
+
 int __init
 setup_profiling_timer (unsigned int multiplier)
 {

arch/ia64/kernel/smpboot.c

@@ -70,6 +70,7 @@ extern void __init calibrate_delay(void);
 extern void start_ap(void);
 
 int cpucount;
+task_t *task_for_booting_cpu;
 
 /* Setup configured maximum number of CPUs to activate */
 static int max_cpus = -1;
@@ -378,7 +379,7 @@ start_secondary (void *unused)
 	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();
@@ -416,13 +417,13 @@ do_boot_cpu (int sapicid)
 	if (!idle)
 		panic("No idle process for CPU %d", cpu);
 
-	idle->processor = cpu;
+	init_idle(idle, cpu);
+
 	ia64_cpu_to_sapicid[cpu] = sapicid;
-	idle->cpus_runnable = 1 << cpu; /* we schedule the first task manually */
 
-	del_from_runqueue(idle);
 	unhash_process(idle);
-	init_tasks[cpu] = idle;
+
+	task_for_booting_cpu = idle;
 
 	Dprintk("Sending wakeup vector %u to AP 0x%x/0x%x.\n", ap_wakeup_vector, cpu, sapicid);
 
@@ -451,6 +452,17 @@ do_boot_cpu (int sapicid)
 	}
 }
 
+unsigned long cache_decay_ticks;	/* # of ticks an idle task is considered cache-hot */
+
+static void
+smp_tune_scheduling (void)
+{
+	cache_decay_ticks = 10;	/* XXX base this on PAL info and cache-bandwidth estimate */
+
+	printk("task migration cache decay timeout: %ld msecs.\n",
+	       (cache_decay_ticks + 1) * 1000 / HZ);
+}
+
 /*
  * Cycle through the APs sending Wakeup IPIs to boot each.
  */
@@ -470,8 +482,8 @@ smp_boot_cpus (void)
 	smp_setup_percpu_timer();
 
 	/*
-	* We have the boot CPU online for sure.
-	*/
+	 * We have the boot CPU online for sure.
+	 */
 	set_bit(0, &cpu_online_map);
 	set_bit(0, &cpu_callin_map);
 
@@ -480,9 +492,9 @@ smp_boot_cpus (void)
 
 	printk("Boot processor id 0x%x/0x%x\n", 0, boot_cpu_id);
 
-	global_irq_holder = 0;
-	current->processor = 0;
-	init_idle();
+	global_irq_holder = NO_PROC_ID;
+	current_thread_info()->cpu = 0;
+	smp_tune_scheduling();
 
 	/*
 	 * If SMP should be disabled, then really disable it!
@@ -493,7 +505,7 @@ smp_boot_cpus (void)
 		smp_num_cpus = 1;
 		goto smp_done;
 	}
-	if  (max_cpus != -1)
+	if (max_cpus != -1)
 		printk (KERN_INFO "Limiting CPUs to %d\n", max_cpus);
 
 	if (smp_boot_data.cpu_count > 1) {

arch/ia64/kernel/sys_ia64.c

@@ -2,8 +2,8 @@
  * This file contains various system calls that have different calling
  * conventions on different platforms.
  *
- * Copyright (C) 1999-2000 Hewlett-Packard Co
- * Copyright (C) 1999-2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999-2000, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 #include <linux/config.h>
 #include <linux/errno.h>
@@ -201,15 +201,13 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un
 	if (len == 0)
 		goto out;
 
-	/* don't permit mappings into unmapped space or the virtual page table of a region: */
+	/*
+	 * Don't permit mappings into unmapped space, the virtual page table of a region,
+	 * or across a region boundary.  Note: RGN_MAP_LIMIT is equal to 2^n-PAGE_SIZE
+	 * (for some integer n <= 61) and len > 0.
+	 */
 	roff = rgn_offset(addr);
-	if ((len | roff | (roff + len)) >= RGN_MAP_LIMIT) {
-		addr = -EINVAL;
-		goto out;
-	}
-
-	/* don't permit mappings that would cross a region boundary: */
-	if (rgn_index(addr) != rgn_index(addr + len)) {
+	if ((len > RGN_MAP_LIMIT) || (roff > (RGN_MAP_LIMIT - len))) {
 		addr = -EINVAL;
 		goto out;
 	}
@@ -276,74 +274,6 @@ ia64_create_module (const char *name_user, size_t size, long arg2, long arg3,
 	return addr;
 }
 
-#if 1
-/*
- * This is here for a while to keep compatibillity with the old stat()
- * call - it will be removed later once everybody migrates to the new
- * kernel stat structure that matches the glibc one - Jes
- */
-
-static int
-cp_ia64_old_stat (struct kstat *stat, struct ia64_oldstat *statbuf)
-{
-	struct ia64_oldstat tmp;
-	unsigned int blocks, indirect;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.st_dev = stat->dev;
-	tmp.st_ino = stat->ino;
-	tmp.st_mode = stat->mode;
-	tmp.st_nlink = stat->nlink;
-	SET_STAT_UID(tmp, stat->uid);
-	SET_STAT_GID(tmp, stat->gid);
-	tmp.st_rdev = stat->rdev;
-	tmp.st_size = stat->size;
-	tmp.st_atime = stat->atime;
-	tmp.st_mtime = stat->mtime;
-	tmp.st_ctime = stat->ctime;
-	tmp.st_blocks = stat->i_blocks;
-	tmp.st_blksize = stat->i_blksize;
-	return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
-}
-
-asmlinkage long
-ia64_oldstat (char *filename, struct ia64_oldstat *statbuf)
-{
-	struct kstat stat;
-	int error = vfs_stat(filename, &stat);
-
-	if (!error)
-		error = cp_ia64_old_stat(&stat, statbuf);
-
-	return error;
-}
-
-asmlinkage long
-ia64_oldlstat (char *filename, struct ia64_oldstat *statbuf)
-{
-	struct kstat stat;
-	int error = vfs_lstat(filename, &stat);
-
-	if (!error)
-		error = cp_ia64_old_stat(&stat, statbuf);
-
-	return error;
-}
-
-asmlinkage long
-ia64_oldfstat (unsigned int fd, struct ia64_oldstat *statbuf)
-{
-	struct kstat stat;
-	int error = vfs_fstat(fd, &stat);
-
-	if (!error)
-		error = cp_ia64_old_stat(&stat, statbuf);
-
-	return error;
-}
-
-#endif
-
 #ifndef CONFIG_PCI
 
 asmlinkage long

arch/ia64/kernel/traps.c

 /*
  * Architecture-specific trap handling.
  *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * 05/12/00 grao <goutham.rao@intel.com> : added isr in siginfo for SIGFPE
@@ -32,6 +32,7 @@ register double f30 asm ("f30"); register double f31 asm ("f31");
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/sched.h>
+#include <linux/tty.h>
 #include <linux/vt_kern.h>		/* For unblank_screen() */
 
 #include <asm/hardirq.h>
@@ -133,6 +134,8 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
 	/* 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;
+	siginfo.si_flags = 0;		/* clear __ISR_VALID */
+	siginfo.si_isr = 0;
 
 	switch (break_num) {
 	      case 0: /* unknown error */
@@ -352,6 +355,8 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
 				siginfo.si_code = FPE_FLTDIV;
 			}
 			siginfo.si_isr = isr;
+			siginfo.si_flags = __ISR_VALID;
+			siginfo.si_imm = 0;
 			force_sig_info(SIGFPE, &siginfo, current);
 		}
 	} else {
@@ -372,6 +377,8 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
 				siginfo.si_code = FPE_FLTRES;
 			}
 			siginfo.si_isr = isr;
+			siginfo.si_flags = __ISR_VALID;
+			siginfo.si_imm = 0;
 			force_sig_info(SIGFPE, &siginfo, current);
 		}
 	}
@@ -490,6 +497,8 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			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(SIGILL, &siginfo, current);
 			return;
 		}
@@ -517,6 +526,10 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 		}
 		siginfo.si_signo = SIGTRAP;
 		siginfo.si_errno = 0;
+		siginfo.si_flags = 0;
+		siginfo.si_isr = 0;
+		siginfo.si_addr = 0;
+		siginfo.si_imm = 0;
 		force_sig_info(SIGTRAP, &siginfo, current);
 		return;
 
@@ -528,6 +541,9 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			siginfo.si_errno = 0;
 			siginfo.si_code = FPE_FLTINV;
 			siginfo.si_addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
+			siginfo.si_flags = __ISR_VALID;
+			siginfo.si_isr = isr;
+			siginfo.si_imm = 0;
 			force_sig_info(SIGFPE, &siginfo, current);
 		}
 		return;
@@ -537,6 +553,9 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			siginfo.si_signo = SIGILL;
 			siginfo.si_code = ILL_BADIADDR;
 			siginfo.si_errno = 0;
+			siginfo.si_flags = 0;
+			siginfo.si_isr = 0;
+			siginfo.si_imm = 0;
 			siginfo.si_addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
 			force_sig_info(SIGILL, &siginfo, current);
 			return;

arch/ia64/kernel/unaligned.c

 /*
  * Architecture-specific unaligned trap handling.
  *
- * Copyright (C) 1999-2001 Hewlett-Packard Co
- * Copyright (C) 1999-2000 Stephane Eranian <eranian@hpl.hp.com>
- * Copyright (C) 2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999-2002 Hewlett-Packard Co
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * 2001/10/11	Fix unaligned access to rotating registers in s/w pipelined loops.
  * 2001/08/13	Correct size of extended floats (float_fsz) from 16 to 10 bytes.
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/smp_lock.h>
+#include <linux/tty.h>
 
 #include <asm/uaccess.h>
 #include <asm/rse.h>
@@ -23,7 +24,7 @@ extern void die_if_kernel(char *str, struct pt_regs *regs, long err) __attribute
 #undef DEBUG_UNALIGNED_TRAP
 
 #ifdef DEBUG_UNALIGNED_TRAP
-# define DPRINT(a...)	do { printk("%s.%u: ", __FUNCTION__, __LINE__); printk (a); } while (0)
+# define DPRINT(a...)	do { printk("%s %u: ", __FUNCTION__, __LINE__); printk (a); } while (0)
 # define DDUMP(str,vp,len)	dump(str, vp, len)
 
 static void
@@ -650,7 +651,7 @@ emulate_load_updates (update_t type, load_store_t ld, struct pt_regs *regs, unsi
 	 * just in case.
 	 */
 	if (ld.x6_op == 1 || ld.x6_op == 3) {
-		printk(KERN_ERR __FUNCTION__": register update on speculative load, error\n");
+		printk("%s %s: register update on speculative load, error\n", KERN_ERR, __FUNCTION__);
 		die_if_kernel("unaligned reference on specualtive load with register update\n",
 			      regs, 30);
 	}
@@ -1080,8 +1081,8 @@ emulate_load_floatpair (unsigned long ifa, load_store_t ld, struct pt_regs *regs
 		 * For this reason we keep this sanity check
 		 */
 		if (ld.x6_op == 1 || ld.x6_op == 3)
-			printk(KERN_ERR __FUNCTION__": register update on speculative load pair, "
-			       "error\n");
+			printk("%s %s: register update on speculative load pair, "
+			       "error\n",KERN_ERR, __FUNCTION__);
 
 		setreg(ld.r3, ifa, 0, regs);
 	}
@@ -1488,6 +1489,9 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs)
 	si.si_errno = 0;
 	si.si_code = BUS_ADRALN;
 	si.si_addr = (void *) ifa;
+	si.si_flags = 0;
+	si.si_isr = 0;
+	si.si_imm = 0;
 	force_sig_info(SIGBUS, &si, current);
 	goto done;
 }

arch/ia64/kernel/unwind.c

 /*
- * Copyright (C) 1999-2001 Hewlett-Packard Co
- * Copyright (C) 1999-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 /*
  * This file implements call frame unwind support for the Linux
@@ -72,6 +72,8 @@
 
 #define alloc_reg_state()	kmalloc(sizeof(struct unw_state_record), GFP_ATOMIC)
 #define free_reg_state(usr)	kfree(usr)
+#define alloc_labeled_state()	kmalloc(sizeof(struct unw_labeled_state), GFP_ATOMIC)
+#define free_labeled_state(usr)	kfree(usr)
 
 typedef unsigned long unw_word;
 typedef unsigned char unw_hash_index_t;
@@ -521,7 +523,7 @@ unw_access_pr (struct unw_frame_info *info, unsigned long *val, int write)
 }
 
 
-/* Unwind decoder routines */
+/* Routines to manipulate the state stack.  */
 
 static inline void
 push (struct unw_state_record *sr)
@@ -534,24 +536,60 @@ push (struct unw_state_record *sr)
 		return;
 	}
 	memcpy(rs, &sr->curr, sizeof(*rs));
-	rs->next = sr->stack;
-	sr->stack = rs;
+	sr->curr.next = rs;
 }
 
 static void
 pop (struct unw_state_record *sr)
 {
-	struct unw_reg_state *rs;
+	struct unw_reg_state *rs = sr->curr.next;
 
-	if (!sr->stack) {
-		printk ("unwind: stack underflow!\n");
+	if (!rs) {
+		printk("unwind: stack underflow!\n");
 		return;
 	}
-	rs = sr->stack;
-	sr->stack = rs->next;
+	memcpy(&sr->curr, rs, sizeof(*rs));
 	free_reg_state(rs);
 }
 
+/* Make a copy of the state stack.  Non-recursive to avoid stack overflows.  */
+static struct unw_reg_state *
+dup_state_stack (struct unw_reg_state *rs)
+{
+	struct unw_reg_state *copy, *prev = NULL, *first = NULL;
+
+	while (rs) {
+		copy = alloc_reg_state();
+		if (!copy) {
+			printk ("unwind.dup_state_stack: out of memory\n");
+			return NULL;
+		}
+		memcpy(copy, rs, sizeof(*copy));
+		if (first)
+			prev->next = copy;
+		else
+			first = copy;
+		rs = rs->next;
+		prev = copy;
+	}
+	return first;
+}
+
+/* Free all stacked register states (but not RS itself).  */
+static void
+free_state_stack (struct unw_reg_state *rs)
+{
+	struct unw_reg_state *p, *next;
+
+	for (p = rs->next; p != NULL; p = next) {
+		next = p->next;
+		free_reg_state(p);
+	}
+	rs->next = NULL;
+}
+
+/* Unwind decoder routines */
+
 static enum unw_register_index __attribute__((const))
 decode_abreg (unsigned char abreg, int memory)
 {
@@ -689,7 +727,7 @@ desc_prologue (int body, unw_word rlen, unsigned char mask, unsigned char grsave
 	sr->first_region = 0;
 
 	/* check if we're done: */
-	if (body && sr->when_target < sr->region_start + sr->region_len) {
+	if (sr->when_target < sr->region_start + sr->region_len) {
 		sr->done = 1;
 		return;
 	}
@@ -902,31 +940,36 @@ desc_epilogue (unw_word t, unw_word ecount, struct unw_state_record *sr)
 static inline void
 desc_copy_state (unw_word label, struct unw_state_record *sr)
 {
-	struct unw_reg_state *rs;
+	struct unw_labeled_state *ls;
 
-	for (rs = sr->reg_state_list; rs; rs = rs->next) {
-		if (rs->label == label) {
-			memcpy (&sr->curr, rs, sizeof(sr->curr));
+	for (ls = sr->labeled_states; ls; ls = ls->next) {
+		if (ls->label == label) {
+			free_state_stack(&sr->curr);
+			memcpy(&sr->curr, &ls->saved_state, sizeof(sr->curr));
+			sr->curr.next = dup_state_stack(ls->saved_state.next);
 			return;
 		}
 	}
-	printk("unwind: failed to find state labelled 0x%lx\n", label);
+	printk("unwind: failed to find state labeled 0x%lx\n", label);
 }
 
 static inline void
 desc_label_state (unw_word label, struct unw_state_record *sr)
 {
-	struct unw_reg_state *rs;
+	struct unw_labeled_state *ls;
 
-	rs = alloc_reg_state();
-	if (!rs) {
-		printk("unwind: cannot stack!\n");
+	ls = alloc_labeled_state();
+	if (!ls) {
+		printk("unwind.desc_label_state(): out of memory\n");
 		return;
 	}
-	memcpy(rs, &sr->curr, sizeof(*rs));
-	rs->label = label;
-	rs->next = sr->reg_state_list;
-	sr->reg_state_list = rs;
+	ls->label = label;
+	memcpy(&ls->saved_state, &sr->curr, sizeof(ls->saved_state));
+	ls->saved_state.next = dup_state_stack(sr->curr.next);
+
+	/* insert into list of labeled states: */
+	ls->next = sr->labeled_states;
+	sr->labeled_states = ls;
 }
 
 /*
@@ -1378,6 +1421,8 @@ lookup (struct unw_table *table, unsigned long rel_ip)
 		else
 			break;
 	}
+	if (rel_ip < e->start_offset || rel_ip >= e->end_offset)
+		return NULL;
 	return e;
 }
 
@@ -1388,9 +1433,9 @@ lookup (struct unw_table *table, unsigned long rel_ip)
 static inline struct unw_script *
 build_script (struct unw_frame_info *info)
 {
-	struct unw_reg_state *rs, *next;
 	const struct unw_table_entry *e = 0;
 	struct unw_script *script = 0;
+	struct unw_labeled_state *ls, *next;
 	unsigned long ip = info->ip;
 	struct unw_state_record sr;
 	struct unw_table *table;
@@ -1535,15 +1580,15 @@ build_script (struct unw_frame_info *info)
 	for (i = UNW_REG_BSP; i < UNW_NUM_REGS; ++i)
 		compile_reg(&sr, i, script);
 
-	/* free labelled register states & stack: */
+	/* free labeled register states & stack: */
 
 	STAT(parse_start = ia64_get_itc());
-	for (rs = sr.reg_state_list; rs; rs = next) {
-		next = rs->next;
-		free_reg_state(rs);
+	for (ls = sr.labeled_states; ls; ls = next) {
+		next = ls->next;
+		free_state_stack(&ls->saved_state);
+		free_labeled_state(ls);
 	}
-	while (sr.stack)
-		pop(&sr);
+	free_state_stack(&sr.curr);
 	STAT(unw.stat.script.parse_time += ia64_get_itc() - parse_start);
 
 	script_finalize(script, &sr);

arch/ia64/kernel/unwind_i.h

 /*
- * Copyright (C) 2000 Hewlett-Packard Co
- * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  *
  * Kernel unwind support.
  */
@@ -85,6 +85,17 @@ struct unw_reg_info {
 	int when;			/* when the register gets saved */
 };
 
+struct unw_reg_state {
+	struct unw_reg_state *next;		/* next (outer) element on state stack */
+	struct unw_reg_info reg[UNW_NUM_REGS];	/* register save locations */
+};
+
+struct unw_labeled_state {
+	struct unw_labeled_state *next;		/* next labeled state (or NULL) */
+	unsigned long label;			/* label for this state */
+	struct unw_reg_state saved_state;
+};
+
 struct unw_state_record {
 	unsigned int first_region : 1;	/* is this the first region? */
 	unsigned int done : 1;		/* are we done scanning descriptors? */
@@ -105,11 +116,8 @@ struct unw_state_record {
 	u8 gr_save_loc;			/* next general register to use for saving a register */
 	u8 return_link_reg;		/* branch register in which the return link is passed */
 
-	struct unw_reg_state {
-		struct unw_reg_state *next;
-		unsigned long label;		/* label of this state record */
-		struct unw_reg_info reg[UNW_NUM_REGS];
-	} curr, *stack, *reg_state_list;
+	struct unw_labeled_state *labeled_states;	/* list of all labeled states */
+	struct unw_reg_state curr;	/* current state */
 };
 
 enum unw_nat_type {
@@ -139,7 +147,7 @@ struct unw_insn {
 };
 
 /*
- * Preserved general static registers (r2-r5) give rise to two script
+ * Preserved general static registers (r4-r7) give rise to two script
  * instructions; everything else yields at most one instruction; at
  * the end of the script, the psp gets popped, accounting for one more
  * instruction.

arch/ia64/lib/clear_page.S

 /*
- *
- * Optimized function to clear a page of memory.
- *
- * Inputs:
- *	in0:	address of page
- *
- * Output:
- * 	none
- *
- * Copyright (C) 1999-2001 Hewlett-Packard Co
- * Copyright (C) 1999 Stephane Eranian <eranian@hpl.hp.com>
- * Copyright (C) 1999-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999-2002 Hewlett-Packard Co
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com>
  *
  * 1/06/01 davidm	Tuned for Itanium.
+ * 2/12/02 kchen	Tuned for both Itanium and McKinley
+ * 3/08/02 davidm	Some more tweaking
  */
+#include <linux/config.h>
+
 #include <asm/asmmacro.h>
 #include <asm/page.h>
 
+#ifdef CONFIG_ITANIUM
+# define L3_LINE_SIZE	64	// Itanium L3 line size
+# define PREFETCH_LINES	9	// magic number
+#else
+# define L3_LINE_SIZE	128	// McKinley L3 line size
+# define PREFETCH_LINES	7	// magic number
+#endif
+
 #define saved_lc	r2
-#define dst0		in0
+#define dst_fetch	r3
 #define dst1		r8
 #define dst2		r9
 #define dst3		r10
-#define dst_fetch	r11
+#define dst4		r11
+
+#define dst_last	r31
 
 GLOBAL_ENTRY(clear_page)
 	.prologue
 	.regstk 1,0,0,0
-	mov r16 = PAGE_SIZE/64-1	// -1 = repeat/until
-	;;
+	mov r16 = PAGE_SIZE/L3_LINE_SIZE-1	// main loop count, -1=repeat/until
 	.save ar.lc, saved_lc
 	mov saved_lc = ar.lc
+
 	.body
-	mov ar.lc = r16
-	adds dst1 = 16, dst0
-	adds dst2 = 32, dst0
-	adds dst3 = 48, dst0
-	adds dst_fetch = 512, dst0
+	mov ar.lc = (PREFETCH_LINES - 1)
+	mov dst_fetch = in0
+	adds dst1 = 16, in0
+	adds dst2 = 32, in0
+	;;
+.fetch:	stf.spill.nta [dst_fetch] = f0, L3_LINE_SIZE
+	adds dst3 = 48, in0		// executing this multiple times is harmless
+	br.cloop.sptk.few .fetch
+	;;
+	addl dst_last = (PAGE_SIZE - PREFETCH_LINES*L3_LINE_SIZE), dst_fetch
+	mov ar.lc = r16			// one L3 line per iteration
+	adds dst4 = 64, in0
+	;;
+#ifdef CONFIG_ITANIUM
+	// Optimized for Itanium
+1:	stf.spill.nta [dst1] = f0, 64
+	stf.spill.nta [dst2] = f0, 64
+	cmp.lt p8,p0=dst_fetch, dst_last
+	;;
+#else
+	// Optimized for McKinley
+1:	stf.spill.nta [dst1] = f0, 64
+	stf.spill.nta [dst2] = f0, 64
+	stf.spill.nta [dst3] = f0, 64
+	stf.spill.nta [dst4] = f0, 128
+	cmp.lt p8,p0=dst_fetch, dst_last
 	;;
-1:	stf.spill.nta [dst0] = f0, 64
 	stf.spill.nta [dst1] = f0, 64
 	stf.spill.nta [dst2] = f0, 64
+#endif
 	stf.spill.nta [dst3] = f0, 64
-
-	lfetch [dst_fetch], 64
-	br.cloop.dptk.few 1b
+(p8)	stf.spill.nta [dst_fetch] = f0, L3_LINE_SIZE
+	br.cloop.sptk.few 1b
 	;;
-	mov ar.lc = r2		// restore lc
+	mov ar.lc = saved_lc		// restore lc
 	br.ret.sptk.many rp
 END(clear_page)

arch/ia64/lib/copy_page.S

@@ -9,8 +9,8 @@
  *	no return value
  *
  * Copyright (C) 1999, 2001 Hewlett-Packard Co
- * Copyright (C) 1999 Stephane Eranian <eranian@hpl.hp.com>
- * Copyright (C) 2001 David Mosberger <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *	David Mosberger <davidm@hpl.hp.com>
  *
  * 4/06/01 davidm	Tuned to make it perform well both for cached and uncached copies.
  */

arch/ia64/lib/swiotlb.c

@@ -27,10 +27,19 @@
 #define ALIGN(val, align) ((unsigned long)	\
 	(((unsigned long) (val) + ((align) - 1)) & ~((align) - 1)))
 
-#define SG_ENT_VIRT_ADDRESS(sg)	((sg)->address ? (sg)->address			\
-				 : page_address((sg)->page) + (sg)->offset)
+#define OFFSET(val,align) ((unsigned long)	\
+	                   ( (val) & ( (align) - 1)))
+
+#define SG_ENT_VIRT_ADDRESS(sg)	(page_address((sg)->page) + (sg)->offset)
 #define SG_ENT_PHYS_ADDRESS(SG)	virt_to_phys(SG_ENT_VIRT_ADDRESS(SG))
 
+/*
+ * Maximum allowable number of contiguous slabs to map,
+ * must be a power of 2.  What is the appropriate value ?
+ * The complexity of {map,unmap}_single is linearly dependent on this value.
+ */
+#define IO_TLB_SEGSIZE	128
+
 /*
  * log of the size of each IO TLB slab.  The number of slabs is command line controllable.
  */
@@ -69,10 +78,15 @@ static int __init
 setup_io_tlb_npages (char *str)
 {
 	io_tlb_nslabs = simple_strtoul(str, NULL, 0) << (PAGE_SHIFT - IO_TLB_SHIFT);
+
+	/* avoid tail segment of size < IO_TLB_SEGSIZE */
+	io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
+
 	return 1;
 }
 __setup("swiotlb=", setup_io_tlb_npages);
 
+
 /*
  * Statically reserve bounce buffer space and initialize bounce buffer data structures for
  * the software IO TLB used to implement the PCI DMA API.
@@ -92,12 +106,12 @@ swiotlb_init (void)
 
 	/*
 	 * Allocate and initialize the free list array.  This array is used
-	 * to find contiguous free memory regions of size 2^IO_TLB_SHIFT between
-	 * io_tlb_start and io_tlb_end.
+	 * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE
+	 * between io_tlb_start and io_tlb_end.
 	 */
 	io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int));
 	for (i = 0; i < io_tlb_nslabs; i++)
-		io_tlb_list[i] = io_tlb_nslabs - i;
+ 		io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
 	io_tlb_index = 0;
 	io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(char *));
 
@@ -124,7 +138,7 @@ map_single (struct pci_dev *hwdev, char *buffer, size_t size, int direction)
 	if (size > (1 << PAGE_SHIFT))
 		stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT));
 	else
-		stride = nslots;
+		stride = 1;
 
 	if (!nslots)
 		BUG();
@@ -151,7 +165,8 @@ map_single (struct pci_dev *hwdev, char *buffer, size_t size, int direction)
 
 				for (i = index; i < index + nslots; i++)
 					io_tlb_list[i] = 0;
-				for (i = index - 1; (i >= 0) && io_tlb_list[i]; i--)
+				for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1)
+				       && io_tlb_list[i]; i--)
 					io_tlb_list[i] = ++count;
 				dma_addr = io_tlb_start + (index << IO_TLB_SHIFT);
 
@@ -217,7 +232,8 @@ unmap_single (struct pci_dev *hwdev, char *dma_addr, size_t size, int direction)
 	 */
 	spin_lock_irqsave(&io_tlb_lock, flags);
 	{
-		int count = ((index + nslots) < io_tlb_nslabs ? io_tlb_list[index + nslots] : 0);
+		int count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ?
+			     io_tlb_list[index + nslots] : 0);
 		/*
 		 * Step 1: return the slots to the free list, merging the slots with
 		 * superceeding slots
@@ -228,7 +244,8 @@ unmap_single (struct pci_dev *hwdev, char *dma_addr, size_t size, int direction)
 		 * Step 2: merge the returned slots with the preceeding slots, if
 		 * available (non zero)
 		 */
-		for (i = index - 1; (i >= 0) && io_tlb_list[i]; i--)
+		for (i = index - 1;  (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) &&
+		       io_tlb_list[i]; i--)
 			io_tlb_list[i] = ++count;
 	}
 	spin_unlock_irqrestore(&io_tlb_lock, flags);
@@ -405,11 +422,9 @@ swiotlb_map_sg (struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int d
 	for (i = 0; i < nelems; i++, sg++) {
 		sg->orig_address = SG_ENT_VIRT_ADDRESS(sg);
 		if ((SG_ENT_PHYS_ADDRESS(sg) & ~hwdev->dma_mask) != 0) {
-			addr = map_single(hwdev, sg->address, sg->length, direction);
-			if (sg->address)
-				sg->address = addr;
-			else
-				sg->page = virt_to_page(addr);
+			addr = map_single(hwdev, sg->orig_address, sg->length, direction);
+			sg->page = virt_to_page(addr);
+			sg->offset = (u64) addr & ~PAGE_MASK;
 		}
 	}
 	return nelems;
@@ -430,12 +445,10 @@ swiotlb_unmap_sg (struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int
 	for (i = 0; i < nelems; i++, sg++)
 		if (sg->orig_address != SG_ENT_VIRT_ADDRESS(sg)) {
 			unmap_single(hwdev, SG_ENT_VIRT_ADDRESS(sg), sg->length, direction);
-			if (sg->address)
-				sg->address = sg->orig_address;
-			else
-				sg->page = virt_to_page(sg->orig_address);
+			sg->page = virt_to_page(sg->orig_address);
+			sg->offset = (u64) sg->orig_address & ~PAGE_MASK;
 		} else if (direction == PCI_DMA_FROMDEVICE)
-			mark_clean(sg->address, sg->length);
+			mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->length);
 }
 
 /*

arch/ia64/mm/extable.c

 /*
  * Kernel exception handling table support.  Derived from arch/alpha/mm/extable.c.
  *
- * Copyright (C) 1998, 1999, 2001 Hewlett-Packard Co
- * Copyright (C) 1998, 1999, 2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998, 1999, 2001-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
 #include <linux/config.h>
@@ -55,10 +55,12 @@ search_exception_table (unsigned long addr)
 	struct module *mp;
 
 	/* The kernel is the last "module" -- no need to treat it special. */
-	for (mp = module_list; mp ; mp = mp->next) {
+	for (mp = module_list; mp; mp = mp->next) {
 		if (!mp->ex_table_start)
 			continue;
 		archdata = (struct archdata *) mp->archdata_start;
+		if (!archdata)
+			continue;
 		entry = search_one_table(mp->ex_table_start, mp->ex_table_end - 1,
 					 addr, (unsigned long) archdata->gp);
 		if (entry) {

arch/ia64/mm/fault.c

 /*
  * MMU fault handling support.
  *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 #include <linux/sched.h>
@@ -96,7 +96,7 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 	 * sure we exit gracefully rather than endlessly redo the
 	 * fault.
 	 */
-	switch (handle_mm_fault(mm, vma, address, mask)) {
+	switch (handle_mm_fault(mm, vma, address, (mask & VM_WRITE) != 0)) {
 	      case 1:
 		++current->min_flt;
 		break;
@@ -151,6 +151,8 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 		si.si_errno = 0;
 		si.si_code = code;
 		si.si_addr = (void *) address;
+		si.si_isr = isr;
+		si.si_flags = __ISR_VALID;
 		force_sig_info(signal, &si, current);
 		return;
 	}
@@ -194,9 +196,7 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
   out_of_memory:
 	up_read(&mm->mmap_sem);
 	if (current->pid == 1) {
-		current->policy |= SCHED_YIELD;
-		schedule();
-		down_read(&mm->mmap_sem);
+		yield();
 		goto survive;
 	}
 	printk("VM: killing process %s\n", current->comm);

arch/ia64/mm/init.c

 /*
  * Initialize MMU support.
  *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1998-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 #include <linux/config.h>
 #include <linux/kernel.h>
@@ -14,6 +14,7 @@
 #include <linux/slab.h>
 #include <linux/swap.h>
 
+#include <asm/a.out.h>
 #include <asm/bitops.h>
 #include <asm/dma.h>
 #include <asm/efi.h>
@@ -37,10 +38,15 @@ unsigned long MAX_DMA_ADDRESS = PAGE_OFFSET + 0x100000000UL;
 
 static unsigned long totalram_pages;
 
+static int pgt_cache_water[2] = { 25, 50 };
+
 int
-do_check_pgt_cache (int low, int high)
+check_pgt_cache (void)
 {
-	int freed = 0;
+	int low, high, freed = 0;
+
+	low = pgt_cache_water[0];
+	high = pgt_cache_water[1];
 
 	if (pgtable_cache_size > high) {
 		do {
@@ -48,8 +54,6 @@ do_check_pgt_cache (int low, int high)
 				free_page((unsigned long)pgd_alloc_one_fast(0)), ++freed;
 			if (pmd_quicklist)
 				free_page((unsigned long)pmd_alloc_one_fast(0, 0)), ++freed;
-			if (pte_quicklist)
-				free_page((unsigned long)pte_alloc_one_fast(0, 0)), ++freed;
 		} while (pgtable_cache_size > low);
 	}
 	return freed;
@@ -243,15 +247,16 @@ put_gate_page (struct page *page, unsigned long address)
 		pmd = pmd_alloc(&init_mm, pgd, address);
 		if (!pmd)
 			goto out;
-		pte = pte_alloc(&init_mm, pmd, address);
+		pte = pte_alloc_map(&init_mm, pmd, address);
 		if (!pte)
 			goto out;
 		if (!pte_none(*pte)) {
-			pte_ERROR(*pte);
+			pte_unmap(pte);
 			goto out;
 		}
 		flush_page_to_ram(page);
 		set_pte(pte, mk_pte(page, PAGE_GATE));
+		pte_unmap(pte);
 	}
   out:	spin_unlock(&init_mm.page_table_lock);
 	/* no need for flush_tlb */

arch/ia64/sn/Makefile

-#
-# ia64/sn/Makefile
-#
-# Copyright (C) 1999 Silicon Graphics, Inc.
-# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
-#
-
-EXTRA_CFLAGS	:= -DSN -DLANGUAGE_C=1 -D_LANGUAGE_C=1 -I. -DBRINGUP \
-		   -DDIRECT_L1_CONSOLE -DNUMA_BASE -DSIMULATED_KLGRAPH \
-		   -DNUMA_MIGR_CONTROL -DLITTLE_ENDIAN -DREAL_HARDWARE \
-		   -DNEW_INTERRUPTS
-all: sn.a
-
-O_TARGET        = sn.a
-obj-y           = sn1/sn1.a
-
-clean::
-
-include $(TOPDIR)/Rules.make

arch/ia64/sn/configs/sn1/defconfig-hp-sp

+#
+# Automatically generated make config: don't edit
+#
+
+#
+# Code maturity level options
+#
+# CONFIG_EXPERIMENTAL is not set
+
+#
+# Loadable module support
+#
+# CONFIG_MODULES is not set
+
+#
+# General setup
+#
+CONFIG_IA64=y
+# CONFIG_ISA is not set
+# CONFIG_EISA is not set
+# CONFIG_MCA is not set
+# CONFIG_SBUS is not set
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+CONFIG_ITANIUM=y
+# CONFIG_MCKINLEY is not set
+# CONFIG_IA64_GENERIC is not set
+# CONFIG_IA64_DIG is not set
+CONFIG_IA64_HP_SIM=y
+# CONFIG_IA64_SGI_SN1 is not set
+# CONFIG_IA64_SGI_SN2 is not set
+# CONFIG_IA64_PAGE_SIZE_4KB is not set
+# CONFIG_IA64_PAGE_SIZE_8KB is not set
+CONFIG_IA64_PAGE_SIZE_16KB=y
+# CONFIG_IA64_PAGE_SIZE_64KB is not set
+CONFIG_IA64_BRL_EMU=y
+CONFIG_ITANIUM_BSTEP_SPECIFIC=y
+CONFIG_IA64_L1_CACHE_SHIFT=6
+CONFIG_KCORE_ELF=y
+# CONFIG_SMP is not set
+# CONFIG_IA32_SUPPORT is not set
+# CONFIG_PERFMON is not set
+# CONFIG_IA64_PALINFO is not set
+# CONFIG_EFI_VARS is not set
+CONFIG_NET=y
+CONFIG_SYSVIPC=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+CONFIG_SYSCTL=y
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+
+#
+# Networking options
+#
+# CONFIG_PACKET is not set
+# CONFIG_NETLINK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_FILTER is not set
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_INET_ECN is not set
+# CONFIG_SYN_COOKIES is not set
+
+#
+#  
+#
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_DECNET is not set
+# CONFIG_BRIDGE is not set
+
+#
+# QoS and/or fair queueing
+#
+# CONFIG_NET_SCHED is not set
+
+#
+# Alternate 1394 support
+#
+# CONFIG_X1394 is not set
+
+#
+# Alternate SCSI support
+#
+# CONFIG_XSCSI is not set
+
+#
+# SCSI support
+#
+CONFIG_SCSI=y
+
+#
+# SCSI support type (disk, tape, CD-ROM)
+#
+CONFIG_BLK_DEV_SD=y
+CONFIG_SD_EXTRA_DEVS=40
+# CONFIG_CHR_DEV_ST is not set
+# CONFIG_CHR_DEV_OSST is not set
+# CONFIG_BLK_DEV_SR is not set
+# CONFIG_CHR_DEV_SG is not set
+
+#
+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
+#
+# CONFIG_SCSI_DEBUG_QUEUES is not set
+# CONFIG_SCSI_MULTI_LUN is not set
+CONFIG_SCSI_CONSTANTS=y
+# CONFIG_SCSI_LOGGING is not set
+
+#
+# SCSI low-level drivers
+#
+# CONFIG_SCSI_7000FASST is not set
+# CONFIG_SCSI_ACARD is not set
+# CONFIG_SCSI_AHA152X is not set
+# CONFIG_SCSI_AHA1542 is not set
+# CONFIG_SCSI_AHA1740 is not set
+# CONFIG_SCSI_AIC7XXX is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_SCSI_ADVANSYS is not set
+# CONFIG_SCSI_IN2000 is not set
+# CONFIG_SCSI_AM53C974 is not set
+# CONFIG_SCSI_MEGARAID is not set
+# CONFIG_SCSI_BUSLOGIC is not set
+# CONFIG_SCSI_DMX3191D is not set
+# CONFIG_SCSI_DTC3280 is not set
+# CONFIG_SCSI_EATA is not set
+# CONFIG_SCSI_EATA_DMA is not set
+# CONFIG_SCSI_EATA_PIO is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_GDTH is not set
+# CONFIG_SCSI_GENERIC_NCR5380 is not set
+# CONFIG_SCSI_INITIO is not set
+# CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_PPA is not set
+# CONFIG_SCSI_IMM is not set
+# CONFIG_SCSI_NCR53C406A is not set
+# CONFIG_SCSI_NCR53C7xx is not set
+# CONFIG_SCSI_PAS16 is not set
+# CONFIG_SCSI_PCI2000 is not set
+# CONFIG_SCSI_PCI2220I is not set
+# CONFIG_SCSI_PSI240I is not set
+# CONFIG_SCSI_QLOGIC_FAS is not set
+# CONFIG_SCSI_SIM710 is not set
+# CONFIG_SCSI_SYM53C416 is not set
+# CONFIG_SCSI_T128 is not set
+# CONFIG_SCSI_U14_34F is not set
+
+#
+# Input core support
+#
+# CONFIG_INPUT is not set
+# CONFIG_INPUT_KEYBDEV is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+# CONFIG_SERIAL is not set
+# CONFIG_SERIAL_EXTENDED is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+CONFIG_UNIX98_PTYS=y
+CONFIG_UNIX98_PTY_COUNT=256
+# CONFIG_PRINTER is not set
+# CONFIG_PPDEV is not set
+
+#
+# I2C support
+#
+# CONFIG_I2C is not set
+
+#
+# Mice
+#
+# CONFIG_BUSMOUSE is not set
+# CONFIG_MOUSE is not set
+
+#
+# Joysticks
+#
+# CONFIG_INPUT_GAMEPORT is not set
+
+#
+# Input core support is needed for gameports
+#
+
+#
+# Input core support is needed for joysticks
+#
+# CONFIG_QIC02_TAPE is not set
+
+#
+# Watchdog Cards
+#
+# CONFIG_WATCHDOG is not set
+# CONFIG_INTEL_RNG is not set
+# CONFIG_NVRAM is not set
+# CONFIG_RTC is not set
+CONFIG_EFI_RTC=y
+# CONFIG_DTLK is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+
+#
+# Ftape, the floppy tape device driver
+#
+# CONFIG_FTAPE is not set
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_MWAVE is not set
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+
+#
+# File systems
+#
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_ADFS_FS is not set
+# CONFIG_ADFS_FS_RW is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_FAT_FS is not set
+# CONFIG_MSDOS_FS is not set
+# CONFIG_UMSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+# CONFIG_CRAMFS is not set
+CONFIG_TMPFS=y
+# CONFIG_RAMFS is not set
+# CONFIG_ISO9660_FS is not set
+# CONFIG_JOLIET is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_NTFS_FS is not set
+# CONFIG_NTFS_RW is not set
+# CONFIG_HPFS_FS is not set
+CONFIG_PROC_FS=y
+# CONFIG_DEVFS_FS is not set
+# CONFIG_DEVFS_MOUNT is not set
+# CONFIG_DEVFS_DEBUG is not set
+CONFIG_DEVPTS_FS=y
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QNX4FS_RW is not set
+# CONFIG_ROMFS_FS is not set
+CONFIG_EXT2_FS=y
+# CONFIG_SYSV_FS is not set
+# CONFIG_UDF_FS is not set
+# CONFIG_UDF_RW is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_UFS_FS_WRITE is not set
+# CONFIG_XFS_SUPPORT is not set
+
+#
+# Network File Systems
+#
+# CONFIG_CODA_FS is not set
+# CONFIG_NFS_FS is not set
+# CONFIG_NFS_V3 is not set
+# CONFIG_ROOT_NFS is not set
+# CONFIG_NFSD is not set
+# CONFIG_NFSD_V3 is not set
+# CONFIG_SUNRPC is not set
+# CONFIG_LOCKD is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_NCPFS_PACKET_SIGNING is not set
+# CONFIG_NCPFS_IOCTL_LOCKING is not set
+# CONFIG_NCPFS_STRONG is not set
+# CONFIG_NCPFS_NFS_NS is not set
+# CONFIG_NCPFS_OS2_NS is not set
+# CONFIG_NCPFS_SMALLDOS is not set
+# CONFIG_NCPFS_NLS is not set
+# CONFIG_NCPFS_EXTRAS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_SMB_NLS is not set
+# CONFIG_NLS is not set
+
+#
+# Console drivers
+#
+CONFIG_VGA_CONSOLE=y
+
+#
+# Frame-buffer support
+#
+# CONFIG_FB is not set
+
+#
+# Simulated drivers
+#
+CONFIG_SIMETH=y
+CONFIG_SIM_SERIAL=y
+CONFIG_SCSI_SIM=y
+
+#
+# Kernel hacking
+#
+CONFIG_DEBUG_KERNEL=y
+CONFIG_IA64_PRINT_HAZARDS=y
+# CONFIG_DISABLE_VHPT is not set
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_IA64_EARLY_PRINTK=y
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_IA64_DEBUG_CMPXCHG is not set
+# CONFIG_IA64_DEBUG_IRQ is not set
+# CONFIG_KDB is not set
+# CONFIG_KDB_MODULES is not set
+# CONFIG_KALLSYMS is not set

arch/ia64/sn/fprom/Makefile → arch/ia64/sn/fakeprom/Makefile

@@ -3,8 +3,7 @@
 # License.  See the file "COPYING" in the main directory of this archive
 # for more details.
 #
-# Copyright (C) 2000 Silicon Graphics, Inc.
-# Copyright (C) Jack Steiner (steiner@sgi.com)
+#  Copyright (c) 2000-2001 Silicon Graphics, Inc.  All rights reserved.
 #
 
 TOPDIR=../../../..
@@ -12,18 +11,16 @@ HPATH           = $(TOPDIR)/include
 
 LIB     = ../../lib/lib.a
 
-OBJ=fpromasm.o main.o  fw-emu.o fpmem.o
+OBJ=fpromasm.o main.o  fw-emu.o fpmem.o klgraph_init.o
 obj-y=fprom
 
 fprom: $(OBJ)
 	$(LD) -static -Tfprom.lds -o fprom $(OBJ) $(LIB)
 
-comma	:= ,
-
 .S.o:
 	$(CC)  -D__ASSEMBLY__ $(AFLAGS) $(AFLAGS_KERNEL) -c -o $*.o $<
 .c.o:
-	$(CC)  $(CFLAGS) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_KERNEL) -c -o $*.o $<
+	$(CC)  $(CFLAGS) $(CFLAGS_KERNEL) -c -o $*.o $<
 
 clean:
 	rm -f *.o fprom