Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

arch/ia64/hp/sim/simserial.c

···
 			}
 		}
 		seen_esc = 0;
-		if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
 
-		*tty->flip.char_buf_ptr = ch;
-
-		*tty->flip.flag_buf_ptr = 0;
-
-		tty->flip.flag_buf_ptr++;
-		tty->flip.char_buf_ptr++;
-		tty->flip.count++;
+		if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+			break;
 	}
 	tty_flip_buffer_push(tty);
 }

arch/ia64/kernel/fsys.S

···
 	data8 0
 	data8 0
 	data8 0
+	data8 0							// 1280
 
 	.org fsyscall_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls

arch/ia64/kernel/jprobes.S

···
 GLOBAL_ENTRY(jprobe_inst_return)
 	br.call.sptk.many b0=jprobe_break
 END(jprobe_inst_return)
+
+GLOBAL_ENTRY(invalidate_stacked_regs)
+	movl r16=invalidate_restore_cfm
+	;;
+	mov b6=r16
+	;;
+	br.ret.sptk.many b6
+	;;
+invalidate_restore_cfm:
+	mov r16=ar.rsc
+	;;
+	mov ar.rsc=r0
+	;;
+	loadrs
+	;;
+	mov ar.rsc=r16
+	;;
+	br.cond.sptk.many rp
+END(invalidate_stacked_regs)
+
+GLOBAL_ENTRY(flush_register_stack)
+	// flush dirty regs to backing store (must be first in insn group)
+	flushrs
+	;;
+	br.ret.sptk.many rp
+END(flush_register_stack)
+

arch/ia64/kernel/kprobes.c

···
 	return ret;
 }
 
+struct param_bsp_cfm {
+	unsigned long ip;
+	unsigned long *bsp;
+	unsigned long cfm;
+};
+
+static void ia64_get_bsp_cfm(struct unw_frame_info *info, void *arg)
+{
+	unsigned long ip;
+	struct param_bsp_cfm *lp = arg;
+
+	do {
+		unw_get_ip(info, &ip);
+		if (ip == 0)
+			break;
+		if (ip == lp->ip) {
+			unw_get_bsp(info, (unsigned long*)&lp->bsp);
+			unw_get_cfm(info, (unsigned long*)&lp->cfm);
+			return;
+		}
+	} while (unw_unwind(info) >= 0);
+	lp->bsp = 0;
+	lp->cfm = 0;
+	return;
+}
+
 int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
 {
 	struct jprobe *jp = container_of(p, struct jprobe, kp);
 	unsigned long addr = ((struct fnptr *)(jp->entry))->ip;
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	struct param_bsp_cfm pa;
+	int bytes;
+
+	/*
+	 * Callee owns the argument space and could overwrite it, eg
+	 * tail call optimization. So to be absolutely safe
+	 * we save the argument space before transfering the control
+	 * to instrumented jprobe function which runs in
+	 * the process context
+	 */
+	pa.ip = regs->cr_iip;
+	unw_init_running(ia64_get_bsp_cfm, &pa);
+	bytes = (char *)ia64_rse_skip_regs(pa.bsp, pa.cfm & 0x3f)
+				- (char *)pa.bsp;
+	memcpy( kcb->jprobes_saved_stacked_regs,
+		pa.bsp,
+		bytes );
+	kcb->bsp = pa.bsp;
+	kcb->cfm = pa.cfm;
 
 	/* save architectural state */
 	kcb->jprobe_saved_regs = *regs;
···
 int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
 {
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	int bytes;
 
+	/* restoring architectural state */
 	*regs = kcb->jprobe_saved_regs;
+
+	/* restoring the original argument space */
+	flush_register_stack();
+	bytes = (char *)ia64_rse_skip_regs(kcb->bsp, kcb->cfm & 0x3f)
+				- (char *)kcb->bsp;
+	memcpy( kcb->bsp,
+		kcb->jprobes_saved_stacked_regs,
+		bytes );
+	invalidate_stacked_regs();
+
 	preempt_enable_no_resched();
 	return 1;
 }

arch/ia64/kernel/mca_asm.S

···
 	;;
 	mov cr.iim=temp3
 	mov cr.iha=temp4
-	dep r22=0,r22,62,2	// pal_min_state, physical, uncached
+	dep r22=0,r22,62,1	// pal_min_state, physical, uncached
 	mov IA64_KR(CURRENT)=r21
 	ld8 r8=[temp1]		// os_status
 	ld8 r10=[temp2]		// context

arch/ia64/kernel/salinfo.c

···
  *
  * Creates entries in /proc/sal for various system features.
  *
- * Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (c) 2003, 2006 Silicon Graphics, Inc.  All rights reserved.
  * Copyright (c) 2003 Hewlett-Packard Co
  *	Bjorn Helgaas <[e-mail]>
  *
···
  *   mca.c may not pass a buffer, a NULL buffer just indicates that a new
  *   record is available in SAL.
  *   Replace some NR_CPUS by cpus_online, for hotplug cpu.
+ *
+ * Jan  5 2006        [e-mail]
+ *   Handle hotplug cpus coming online.
+ *   Handle hotplug cpus going offline while they still have outstanding records.
+ *   Use the cpu_* macros consistently.
+ *   Replace the counting semaphore with a mutex and a test if the cpumask is non-empty.
+ *   Modify the locking to make the test for "work to do" an atomic operation.
  */
 
 #include <linux/capability.h>
+#include <linux/cpu.h>
 #include <linux/types.h>
 #include <linux/proc_fs.h>
 #include <linux/module.h>
···
 };
 
 struct salinfo_data {
-	volatile cpumask_t	cpu_event;	/* which cpus have outstanding events */
-	struct semaphore	sem;		/* count of cpus with outstanding events (bits set in cpu_event) */
+	cpumask_t		cpu_event;	/* which cpus have outstanding events */
+	struct semaphore	mutex;
 	u8			*log_buffer;
 	u64			log_size;
 	u8			*oemdata;	/* decoded oem data */
···
 	int ret;
 };
 
+/* Kick the mutex that tells user space that there is work to do.  Instead of
+ * trying to track the state of the mutex across multiple cpus, in user
+ * context, interrupt context, non-maskable interrupt context and hotplug cpu,
+ * it is far easier just to grab the mutex if it is free then release it.
+ *
+ * This routine must be called with data_saved_lock held, to make the down/up
+ * operation atomic.
+ */
+static void
+salinfo_work_to_do(struct salinfo_data *data)
+{
+	down_trylock(&data->mutex);
+	up(&data->mutex);
+}
+
 static void
 salinfo_platform_oemdata_cpu(void *context)
 {
···
 
 	BUG_ON(type >= ARRAY_SIZE(salinfo_log_name));
 
+	if (irqsafe)
+		spin_lock_irqsave(&data_saved_lock, flags);
 	if (buffer) {
-		if (irqsafe)
-			spin_lock_irqsave(&data_saved_lock, flags);
 		for (i = 0, data_saved = data->data_saved; i < saved_size; ++i, ++data_saved) {
 			if (!data_saved->buffer)
 				break;
···
 			data_saved->size = size;
 			data_saved->buffer = buffer;
 		}
-		if (irqsafe)
-			spin_unlock_irqrestore(&data_saved_lock, flags);
 	}
-
-	if (!test_and_set_bit(smp_processor_id(), &data->cpu_event)) {
-		if (irqsafe)
-			up(&data->sem);
+	cpu_set(smp_processor_id(), data->cpu_event);
+	if (irqsafe) {
+		salinfo_work_to_do(data);
+		spin_unlock_irqrestore(&data_saved_lock, flags);
 	}
 }
 
···
 static void
 salinfo_timeout_check(struct salinfo_data *data)
 {
-	int i;
+	unsigned long flags;
 	if (!data->open)
 		return;
-	for_each_online_cpu(i) {
-		if (test_bit(i, &data->cpu_event)) {
-			/* double up() is not a problem, user space will see no
-			 * records for the additional "events".
-			 */
-			up(&data->sem);
-		}
+	if (!cpus_empty(data->cpu_event)) {
+		spin_lock_irqsave(&data_saved_lock, flags);
+		salinfo_work_to_do(data);
+		spin_unlock_irqrestore(&data_saved_lock, flags);
 	}
 }
 
-static void 
+static void
 salinfo_timeout (unsigned long arg)
 {
 	salinfo_timeout_check(salinfo_data + SAL_INFO_TYPE_MCA);
···
 	int i, n, cpu = -1;
 
 retry:
-	if (down_trylock(&data->sem)) {
+	if (cpus_empty(data->cpu_event) && down_trylock(&data->mutex)) {
 		if (file->f_flags & O_NONBLOCK)
 			return -EAGAIN;
-		if (down_interruptible(&data->sem))
+		if (down_interruptible(&data->mutex))
 			return -EINTR;
 	}
 
 	n = data->cpu_check;
 	for (i = 0; i < NR_CPUS; i++) {
-		if (test_bit(n, &data->cpu_event) && cpu_online(n)) {
+		if (cpu_isset(n, data->cpu_event)) {
+			if (!cpu_online(n)) {
+				cpu_clear(n, data->cpu_event);
+				continue;
+			}
 			cpu = n;
 			break;
 		}
···
 
 	if (cpu == -1)
 		goto retry;
-
-	/* events are sticky until the user says "clear" */
-	up(&data->sem);
 
 	/* for next read, start checking at next CPU */
 	data->cpu_check = cpu;
···
 static void
 call_on_cpu(int cpu, void (*fn)(void *), void *arg)
 {
-	cpumask_t save_cpus_allowed, new_cpus_allowed;
-	memcpy(&save_cpus_allowed, &current->cpus_allowed, sizeof(save_cpus_allowed));
-	memset(&new_cpus_allowed, 0, sizeof(new_cpus_allowed));
-	set_bit(cpu, &new_cpus_allowed);
+	cpumask_t save_cpus_allowed = current->cpus_allowed;
+	cpumask_t new_cpus_allowed = cpumask_of_cpu(cpu);
 	set_cpus_allowed(current, new_cpus_allowed);
 	(*fn)(arg);
 	set_cpus_allowed(current, save_cpus_allowed);
···
 	if (!data->saved_num)
 		call_on_cpu(cpu, salinfo_log_read_cpu, data);
 	if (!data->log_size) {
-	        data->state = STATE_NO_DATA;
-	        clear_bit(cpu, &data->cpu_event);
+		data->state = STATE_NO_DATA;
+		cpu_clear(cpu, data->cpu_event);
 	} else {
-	        data->state = STATE_LOG_RECORD;
+		data->state = STATE_LOG_RECORD;
 	}
 }
 
···
 salinfo_log_clear(struct salinfo_data *data, int cpu)
 {
 	sal_log_record_header_t *rh;
+	unsigned long flags;
+	spin_lock_irqsave(&data_saved_lock, flags);
 	data->state = STATE_NO_DATA;
-	if (!test_bit(cpu, &data->cpu_event))
-		return 0;
-	down(&data->sem);
-	clear_bit(cpu, &data->cpu_event);
-	if (data->saved_num) {
-		unsigned long flags;
-		spin_lock_irqsave(&data_saved_lock, flags);
-		shift1_data_saved(data, data->saved_num - 1 );
-		data->saved_num = 0;
+	if (!cpu_isset(cpu, data->cpu_event)) {
 		spin_unlock_irqrestore(&data_saved_lock, flags);
+		return 0;
 	}
+	cpu_clear(cpu, data->cpu_event);
+	if (data->saved_num) {
+		shift1_data_saved(data, data->saved_num - 1);
+		data->saved_num = 0;
+	}
+	spin_unlock_irqrestore(&data_saved_lock, flags);
 	rh = (sal_log_record_header_t *)(data->log_buffer);
 	/* Corrected errors have already been cleared from SAL */
 	if (rh->severity != sal_log_severity_corrected)
 		call_on_cpu(cpu, salinfo_log_clear_cpu, data);
 	/* clearing a record may make a new record visible */
 	salinfo_log_new_read(cpu, data);
-	if (data->state == STATE_LOG_RECORD &&
-	    !test_and_set_bit(cpu,  &data->cpu_event))
-		up(&data->sem);
+	if (data->state == STATE_LOG_RECORD) {
+		spin_lock_irqsave(&data_saved_lock, flags);
+		cpu_set(cpu, data->cpu_event);
+		salinfo_work_to_do(data);
+		spin_unlock_irqrestore(&data_saved_lock, flags);
+	}
 	return 0;
 }
 
···
 	.write   = salinfo_log_write,
 };
 
+#ifdef	CONFIG_HOTPLUG_CPU
+static int __devinit
+salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
+{
+	unsigned int i, cpu = (unsigned long)hcpu;
+	unsigned long flags;
+	struct salinfo_data *data;
+	switch (action) {
+	case CPU_ONLINE:
+		spin_lock_irqsave(&data_saved_lock, flags);
+		for (i = 0, data = salinfo_data;
+		     i < ARRAY_SIZE(salinfo_data);
+		     ++i, ++data) {
+			cpu_set(cpu, data->cpu_event);
+			salinfo_work_to_do(data);
+		}
+		spin_unlock_irqrestore(&data_saved_lock, flags);
+		break;
+	case CPU_DEAD:
+		spin_lock_irqsave(&data_saved_lock, flags);
+		for (i = 0, data = salinfo_data;
+		     i < ARRAY_SIZE(salinfo_data);
+		     ++i, ++data) {
+			struct salinfo_data_saved *data_saved;
+			int j;
+			for (j = ARRAY_SIZE(data->data_saved) - 1, data_saved = data->data_saved + j;
+			     j >= 0;
+			     --j, --data_saved) {
+				if (data_saved->buffer && data_saved->cpu == cpu) {
+					shift1_data_saved(data, j);
+				}
+			}
+			cpu_clear(cpu, data->cpu_event);
+		}
+		spin_unlock_irqrestore(&data_saved_lock, flags);
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block salinfo_cpu_notifier =
+{
+	.notifier_call = salinfo_cpu_callback,
+	.priority = 0,
+};
+#endif	/* CONFIG_HOTPLUG_CPU */
+
 static int __init
 salinfo_init(void)
 {
···
 	struct proc_dir_entry **sdir = salinfo_proc_entries; /* keeps track of every entry */
 	struct proc_dir_entry *dir, *entry;
 	struct salinfo_data *data;
-	int i, j, online;
+	int i, j;
 
 	salinfo_dir = proc_mkdir("sal", NULL);
 	if (!salinfo_dir)
···
 	for (i = 0; i < ARRAY_SIZE(salinfo_log_name); i++) {
 		data = salinfo_data + i;
 		data->type = i;
-		sema_init(&data->sem, 0);
+		init_MUTEX(&data->mutex);
 		dir = proc_mkdir(salinfo_log_name[i], salinfo_dir);
 		if (!dir)
 			continue;
···
 		*sdir++ = entry;
 
 		/* we missed any events before now */
-		online = 0;
-		for_each_online_cpu(j) {
-			set_bit(j, &data->cpu_event);
-			++online;
-		}
-		sema_init(&data->sem, online);
+		for_each_online_cpu(j)
+			cpu_set(j, data->cpu_event);
 
 		*sdir++ = dir;
 	}
···
 	salinfo_timer.expires = jiffies + SALINFO_TIMER_DELAY;
 	salinfo_timer.function = &salinfo_timeout;
 	add_timer(&salinfo_timer);
+
+#ifdef	CONFIG_HOTPLUG_CPU
+	register_cpu_notifier(&salinfo_cpu_notifier);
+#endif
 
 	return 0;
 }

arch/ia64/kernel/traps.c

···
 		if (fsys_mode(current, &regs)) {
 			extern char __kernel_syscall_via_break[];
 			/*
-			 * Got a trap in fsys-mode: Taken Branch Trap and Single Step trap
-			 * need special handling; Debug trap is not supposed to happen.
+			 * Got a trap in fsys-mode: Taken Branch Trap
+			 * and Single Step trap need special handling;
+			 * Debug trap is ignored (we disable it here
+			 * and re-enable it in the lower-privilege trap).
 			 */
 			if (unlikely(vector == 29)) {
-				die("Got debug trap in fsys-mode---not supposed to happen!",
-				    &regs, 0);
+				set_thread_flag(TIF_DB_DISABLED);
+				ia64_psr(&regs)->db = 0;
+				ia64_psr(&regs)->lp = 1;
 				return;
 			}
 			/* re-do the system call via break 0x100000: */
···
 	      case 34:
 		if (isr & 0x2) {
 			/* Lower-Privilege Transfer Trap */
+
+			/* If we disabled debug traps during an fsyscall,
+			 * re-enable them here.
+			 */
+			if (test_thread_flag(TIF_DB_DISABLED)) {
+				clear_thread_flag(TIF_DB_DISABLED);
+				ia64_psr(&regs)->db = 1;
+			}
+
 			/*
-			 * Just clear PSR.lp and then return immediately: all the
-			 * interesting work (e.g., signal delivery is done in the kernel
-			 * exit path).
+			 * Just clear PSR.lp and then return immediately:
+			 * all the interesting work (e.g., signal delivery)
+			 * is done in the kernel exit path.
 			 */
 			ia64_psr(&regs)->lp = 0;
 			return;

arch/ia64/mm/tlb.c

···
 {
 	static DEFINE_SPINLOCK(ptcg_lock);
 
-	if (mm != current->active_mm) {
+	if (mm != current->active_mm || !current->mm) {
 		flush_tlb_all();
 		return;
 	}

arch/ia64/sn/include/xtalk/hubdev.h

···
 #define IIO_NUM_ITTES   7
 #define HUB_NUM_BIG_WINDOW      (IIO_NUM_ITTES - 1)
 
-struct sn_flush_device_list {
+/* This struct is shared between the PROM and the kernel.
+ * Changes to this struct will require corresponding changes to the kernel.
+ */
+struct sn_flush_device_common {
 	int sfdl_bus;
 	int sfdl_slot;
 	int sfdl_pin;
-	struct bar_list {
+	struct common_bar_list {
 		unsigned long start;
 		unsigned long end;
 	} sfdl_bar_list[6];
···
 	uint32_t sfdl_persistent_busnum;
 	uint32_t sfdl_persistent_segment;
 	struct pcibus_info *sfdl_pcibus_info;
+};
+
+/* This struct is kernel only and is not used by the PROM */
+struct sn_flush_device_kernel {
 	spinlock_t sfdl_flush_lock;
+	struct sn_flush_device_common *common;
 };
 
 /*
- * **widget_p - Used as an array[wid_num][device] of sn_flush_device_list.
+ * **widget_p - Used as an array[wid_num][device] of sn_flush_device_kernel.
  */
 struct sn_flush_nasid_entry  {
-	struct sn_flush_device_list **widget_p; /* Used as a array of wid_num */
+	struct sn_flush_device_kernel **widget_p; // Used as an array of wid_num
 	uint64_t iio_itte[8];
 };
 

arch/ia64/sn/kernel/bte_error.c

···
  * Wait until all BTE related CRBs are completed
  * and then reset the interfaces.
  */
-void shub1_bte_error_handler(unsigned long _nodepda)
+int shub1_bte_error_handler(unsigned long _nodepda)
 {
 	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
 	struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
···
 	    (err_nodepda->bte_if[1].bh_error == BTE_SUCCESS)) {
 		BTE_PRINTK(("eh:%p:%d Nothing to do.\n", err_nodepda,
 			    smp_processor_id()));
-		return;
+		return 1;
 	}
 
 	/* Determine information about our hub */
···
 		mod_timer(recovery_timer, HZ * 5);
 		BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda,
 			    smp_processor_id()));
-		return;
+		return 1;
 	}
 	if (icmr.ii_icmr_fld_s.i_crb_vld != 0) {
 
···
 				BTE_PRINTK(("eh:%p:%d Valid %d, Giving up\n",
 					    err_nodepda, smp_processor_id(),
 					    i));
-				return;
+				return 1;
 			}
 		}
 	}
···
 	REMOTE_HUB_S(nasid, IIO_IBCR, ibcr.ii_ibcr_regval);
 
 	del_timer(recovery_timer);
+	return 0;
+}
+
+/*
+ * Wait until all BTE related CRBs are completed
+ * and then reset the interfaces.
+ */
+int shub2_bte_error_handler(unsigned long _nodepda)
+{
+	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
+	struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
+	struct bteinfo_s *bte;
+	nasid_t nasid;
+	u64 status;
+	int i;
+
+	nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode);
+
+	/*
+	 * Verify that all the BTEs are complete
+	 */
+	for (i = 0; i < BTES_PER_NODE; i++) {
+		bte = &err_nodepda->bte_if[i];
+		status = BTE_LNSTAT_LOAD(bte);
+		if ((status & IBLS_ERROR) || !(status & IBLS_BUSY))
+			continue;
+		mod_timer(recovery_timer, HZ * 5);
+		BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda,
+			    smp_processor_id()));
+		return 1;
+	}
+	if (ia64_sn_bte_recovery(nasid))
+		panic("bte_error_handler(): Fatal BTE Error");
+
+	del_timer(recovery_timer);
+	return 0;
 }
 
 /*
···
 	struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
 	spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
 	int i;
-	nasid_t nasid;
 	unsigned long irq_flags;
 	volatile u64 *notify;
 	bte_result_t bh_error;
···
 	}
 
 	if (is_shub1()) {
-		shub1_bte_error_handler(_nodepda);
+		if (shub1_bte_error_handler(_nodepda)) {
+			spin_unlock_irqrestore(recovery_lock, irq_flags);
+			return;
+		}
 	} else {
-		nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode);
-
-		if (ia64_sn_bte_recovery(nasid))
-			panic("bte_error_handler(): Fatal BTE Error");
+		if (shub2_bte_error_handler(_nodepda)) {
+			spin_unlock_irqrestore(recovery_lock, irq_flags);
+			return;
+		}
 	}
 
 	for (i = 0; i < BTES_PER_NODE; i++) {

arch/ia64/sn/kernel/huberror.c

···
 	ret_stuff.v0 = 0;
 	hubdev_info = (struct hubdev_info *)arg;
 	nasid = hubdev_info->hdi_nasid;
-	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_HUB_ERROR_INTERRUPT,
-			(u64) nasid, 0, 0, 0, 0, 0, 0);
-
-	if ((int)ret_stuff.v0)
-		panic("hubii_eint_handler(): Fatal TIO Error");
 
 	if (is_shub1()) {
+		SAL_CALL_NOLOCK(ret_stuff, SN_SAL_HUB_ERROR_INTERRUPT,
+			(u64) nasid, 0, 0, 0, 0, 0, 0);
+
+		if ((int)ret_stuff.v0)
+			panic("hubii_eint_handler(): Fatal TIO Error");
+
 		if (!(nasid & 1)) /* Not a TIO, handle CRB errors */
 			(void)hubiio_crb_error_handler(hubdev_info);
 	} else 

arch/ia64/sn/kernel/io_init.c

···
 };
 
 /*
- * Retrieve the DMA Flush List given nasid.  This list is needed 
- * to implement the WAR - Flush DMA data on PIO Reads.
+ * Retrieve the DMA Flush List given nasid, widget, and device.
+ * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
  */
-static inline uint64_t
-sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
+static inline u64
+sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
+			     u64 address)
 {
 
 	struct ia64_sal_retval ret_stuff;
···
 	ret_stuff.v0 = 0;
 
 	SAL_CALL_NOLOCK(ret_stuff,
-			(u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
-			(u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
-			0);
-	return ret_stuff.v0;
+			(u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
+			(u64) nasid, (u64) widget_num,
+			(u64) device_num, (u64) address, 0, 0, 0);
+	return ret_stuff.status;
 
 }
 
 /*
  * Retrieve the hub device info structure for the given nasid.
  */
-static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
+static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
 {
 
 	struct ia64_sal_retval ret_stuff;
···
 /*
  * Retrieve the pci bus information given the bus number.
  */
-static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
+static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 {
 
 	struct ia64_sal_retval ret_stuff;
···
 /*
  * Retrieve the pci device information given the bus and device|function number.
  */
-static inline uint64_t
+static inline u64
 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev, 
 			u64 sn_irq_info)
 {
···
  */
 static void sn_fixup_ionodes(void)
 {
-
-	struct sn_flush_device_list *sn_flush_device_list;
+	struct sn_flush_device_kernel *sn_flush_device_kernel;
+	struct sn_flush_device_kernel *dev_entry;
 	struct hubdev_info *hubdev;
-	uint64_t status;
-	uint64_t nasid;
-	int i, widget;
+	u64 status;
+	u64 nasid;
+	int i, widget, device;
 
 	/*
 	 * Get SGI Specific HUB chipset information.
···
 		nasid = cnodeid_to_nasid(i);
 		hubdev->max_segment_number = 0xffffffff;
 		hubdev->max_pcibus_number = 0xff;
-		status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
+		status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
 		if (status)
 			continue;
 
···
 
 		hubdev->hdi_flush_nasid_list.widget_p =
 		    kmalloc((HUB_WIDGET_ID_MAX + 1) *
-			    sizeof(struct sn_flush_device_list *), GFP_KERNEL);
-
+			    sizeof(struct sn_flush_device_kernel *),
+			    GFP_KERNEL);
 		memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
 		       (HUB_WIDGET_ID_MAX + 1) *
-		       sizeof(struct sn_flush_device_list *));
+		       sizeof(struct sn_flush_device_kernel *));
 
 		for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
-			sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
-						       sizeof(struct
-							      sn_flush_device_list),
-						       GFP_KERNEL);
-			memset(sn_flush_device_list, 0x0,
+			sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
+						         sizeof(struct
+						        sn_flush_device_kernel),
+						        GFP_KERNEL);
+			if (!sn_flush_device_kernel)
+				BUG();
+			memset(sn_flush_device_kernel, 0x0,
 			       DEV_PER_WIDGET *
-			       sizeof(struct sn_flush_device_list));
+			       sizeof(struct sn_flush_device_kernel));
 
-			status =
-			    sal_get_widget_dmaflush_list(nasid, widget,
-							 (uint64_t)
-							 __pa
-							 (sn_flush_device_list));
-			if (status) {
-				kfree(sn_flush_device_list);
-				continue;
+			dev_entry = sn_flush_device_kernel;
+			for (device = 0; device < DEV_PER_WIDGET;
+			     device++,dev_entry++) {
+				dev_entry->common = kmalloc(sizeof(struct
+					      	        sn_flush_device_common),
+					                    GFP_KERNEL);
+				if (!dev_entry->common)
+					BUG();
+				memset(dev_entry->common, 0x0, sizeof(struct
+					     	       sn_flush_device_common));
+
+				status = sal_get_device_dmaflush_list(nasid,
+									widget,
+								       	device,
+						      (u64)(dev_entry->common));
+				if (status)
+					BUG();
+
+				spin_lock_init(&dev_entry->sfdl_flush_lock);
 			}
 
-			spin_lock_init(&sn_flush_device_list->sfdl_flush_lock);
-			hubdev->hdi_flush_nasid_list.widget_p[widget] =
-			    sn_flush_device_list;
-		}
-
+			if (sn_flush_device_kernel)
+				hubdev->hdi_flush_nasid_list.widget_p[widget] =
+						       sn_flush_device_kernel;
+	        }
 	}
-
 }
 
 /*

arch/ia64/sn/kernel/xpc.h include/asm-ia64/sn/xpc.h

···
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2004-2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 
···
  * Cross Partition Communication (XPC) structures and macros.
  */
 
-#ifndef _IA64_SN_KERNEL_XPC_H
-#define _IA64_SN_KERNEL_XPC_H
+#ifndef _ASM_IA64_SN_XPC_H
+#define _ASM_IA64_SN_XPC_H
 
 
 #include <linux/config.h>
···
 extern struct device *xpc_part;
 extern struct device *xpc_chan;
 extern int xpc_disengage_request_timelimit;
+extern int xpc_disengage_request_timedout;
 extern irqreturn_t xpc_notify_IRQ_handler(int, void *, struct pt_regs *);
 extern void xpc_dropped_IPI_check(struct xpc_partition *);
 extern void xpc_activate_partition(struct xpc_partition *);
···
 extern void xpc_deliver_msg(struct xpc_channel *);
 extern void xpc_disconnect_channel(const int, struct xpc_channel *,
 					enum xpc_retval, unsigned long *);
-extern void xpc_disconnecting_callout(struct xpc_channel *);
+extern void xpc_disconnect_callout(struct xpc_channel *, enum xpc_retval);
 extern void xpc_partition_going_down(struct xpc_partition *, enum xpc_retval);
 extern void xpc_teardown_infrastructure(struct xpc_partition *);
 
···
 }
 
 
-#endif /* _IA64_SN_KERNEL_XPC_H */
+#endif /* _ASM_IA64_SN_XPC_H */
 

arch/ia64/sn/kernel/xpc_channel.c

···
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2004-2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 
···
 #include <linux/slab.h>
 #include <asm/sn/bte.h>
 #include <asm/sn/sn_sal.h>
-#include "xpc.h"
+#include <asm/sn/xpc.h>
 
 
 /*
···
 	}
 
 	/* both sides are disconnected now */
+
+	if (ch->flags & XPC_C_CONNECTCALLOUT) {
+		spin_unlock_irqrestore(&ch->lock, *irq_flags);
+		xpc_disconnect_callout(ch, xpcDisconnected);
+		spin_lock_irqsave(&ch->lock, *irq_flags);
+	}
 
 	/* it's now safe to free the channel's message queues */
 	xpc_free_msgqueues(ch);
···
 
 
 void
-xpc_disconnecting_callout(struct xpc_channel *ch)
+xpc_disconnect_callout(struct xpc_channel *ch, enum xpc_retval reason)
 {
 	/*
 	 * Let the channel's registerer know that the channel is being
···
 	 */
 
 	if (ch->func != NULL) {
-		dev_dbg(xpc_chan, "ch->func() called, reason=xpcDisconnecting,"
-			" partid=%d, channel=%d\n", ch->partid, ch->number);
+		dev_dbg(xpc_chan, "ch->func() called, reason=%d, partid=%d, "
+			"channel=%d\n", reason, ch->partid, ch->number);
 
-		ch->func(xpcDisconnecting, ch->partid, ch->number, NULL,
-								ch->key);
+		ch->func(reason, ch->partid, ch->number, NULL, ch->key);
 
-		dev_dbg(xpc_chan, "ch->func() returned, reason="
-			"xpcDisconnecting, partid=%d, channel=%d\n",
-			ch->partid, ch->number);
+		dev_dbg(xpc_chan, "ch->func() returned, reason=%d, partid=%d, "
+			"channel=%d\n", reason, ch->partid, ch->number);
 	}
 }
 

arch/ia64/sn/kernel/xpc_main.c

···
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2004-2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 
···
 #include <asm/sn/sn_sal.h>
 #include <asm/kdebug.h>
 #include <asm/uaccess.h>
-#include "xpc.h"
+#include <asm/sn/xpc.h>
 
 
 /* define two XPC debug device structures to be used with dev_dbg() et al */
···
 
 struct device *xpc_part = &xpc_part_dbg_subname;
 struct device *xpc_chan = &xpc_chan_dbg_subname;
+
+
+static int xpc_kdebug_ignore;
 
 
 /* systune related variables for /proc/sys directories */
···
 };
 static struct ctl_table_header *xpc_sysctl;
 
+/* non-zero if any remote partition disengage request was timed out */
+int xpc_disengage_request_timedout;
 
 /* #of IRQs received */
 static atomic_t xpc_act_IRQ_rcvd;
···
 			ch->flags |= XPC_C_DISCONNECTCALLOUT;
 			spin_unlock_irqrestore(&ch->lock, irq_flags);
 
-			xpc_disconnecting_callout(ch);
+			xpc_disconnect_callout(ch, xpcDisconnecting);
 		} else {
 			spin_unlock_irqrestore(&ch->lock, irq_flags);
 		}
···
 xpc_do_exit(enum xpc_retval reason)
 {
 	partid_t partid;
-	int active_part_count;
+	int active_part_count, printed_waiting_msg = 0;
 	struct xpc_partition *part;
-	unsigned long printmsg_time;
+	unsigned long printmsg_time, disengage_request_timeout = 0;
 
 
 	/* a 'rmmod XPC' and a 'reboot' cannot both end up here together */
···
 
 	/* wait for all partitions to become inactive */
 
-	printmsg_time = jiffies;
+	printmsg_time = jiffies + (XPC_DISENGAGE_PRINTMSG_INTERVAL * HZ);
+	xpc_disengage_request_timedout = 0;
 
 	do {
 		active_part_count = 0;
···
 			active_part_count++;
 
 			XPC_DEACTIVATE_PARTITION(part, reason);
+
+			if (part->disengage_request_timeout >
+						disengage_request_timeout) {
+				disengage_request_timeout =
+						part->disengage_request_timeout;
+			}
 		}
 
-		if (active_part_count == 0) {
-			break;
-		}
-
-		if (jiffies >= printmsg_time) {
-			dev_info(xpc_part, "waiting for partitions to "
-				"deactivate/disengage, active count=%d, remote "
-				"engaged=0x%lx\n", active_part_count,
-				xpc_partition_engaged(1UL << partid));
-
-			printmsg_time = jiffies +
+		if (xpc_partition_engaged(-1UL)) {
+			if (time_after(jiffies, printmsg_time)) {
+				dev_info(xpc_part, "waiting for remote "
+					"partitions to disengage, timeout in "
+					"%ld seconds\n",
+					(disengage_request_timeout - jiffies)
+									/ HZ);
+				printmsg_time = jiffies +
 					(XPC_DISENGAGE_PRINTMSG_INTERVAL * HZ);
+				printed_waiting_msg = 1;
+			}
+
+		} else if (active_part_count > 0) {
+			if (printed_waiting_msg) {
+				dev_info(xpc_part, "waiting for local partition"
+					" to disengage\n");
+				printed_waiting_msg = 0;
+			}
+
+		} else {
+			if (!xpc_disengage_request_timedout) {
+				dev_info(xpc_part, "all partitions have "
+					"disengaged\n");
+			}
+			break;
 		}
 
 		/* sleep for a 1/3 of a second or so */
···
 	del_timer_sync(&xpc_hb_timer);
 	DBUG_ON(xpc_vars->heartbeating_to_mask != 0);
 
-	/* take ourselves off of the reboot_notifier_list */
-	(void) unregister_reboot_notifier(&xpc_reboot_notifier);
+	if (reason == xpcUnloading) {
+		/* take ourselves off of the reboot_notifier_list */
+		(void) unregister_reboot_notifier(&xpc_reboot_notifier);
 
-	/* take ourselves off of the die_notifier list */
-	(void) unregister_die_notifier(&xpc_die_notifier);
+		/* take ourselves off of the die_notifier list */
+		(void) unregister_die_notifier(&xpc_die_notifier);
+	}
 
 	/* close down protections for IPI operations */
 	xpc_restrict_IPI_ops();
···
 	if (xpc_sysctl) {
 		unregister_sysctl_table(xpc_sysctl);
 	}
-}
-
-
-/*
- * Called when the system is about to be either restarted or halted.
- */
-static void
-xpc_die_disengage(void)
-{
-	struct xpc_partition *part;
-	partid_t partid;
-	unsigned long engaged;
-	long time, print_time, disengage_request_timeout;
-
-
-	/* keep xpc_hb_checker thread from doing anything (just in case) */
-	xpc_exiting = 1;
-
-	xpc_vars->heartbeating_to_mask = 0;  /* indicate we're deactivated */
-
-	for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
-		part = &xpc_partitions[partid];
-
-		if (!XPC_SUPPORTS_DISENGAGE_REQUEST(part->
-							remote_vars_version)) {
-
-			/* just in case it was left set by an earlier XPC */
-			xpc_clear_partition_engaged(1UL << partid);
-			continue;
-		}
-
-		if (xpc_partition_engaged(1UL << partid) ||
-					part->act_state != XPC_P_INACTIVE) {
-			xpc_request_partition_disengage(part);
-			xpc_mark_partition_disengaged(part);
-			xpc_IPI_send_disengage(part);
-		}
-	}
-
-	print_time = rtc_time();
-	disengage_request_timeout = print_time +
-		(xpc_disengage_request_timelimit * sn_rtc_cycles_per_second);
-
-	/* wait for all other partitions to disengage from us */
-
-	while ((engaged = xpc_partition_engaged(-1UL)) &&
-			(time = rtc_time()) < disengage_request_timeout) {
-
-		if (time >= print_time) {
-			dev_info(xpc_part, "waiting for remote partitions to "
-				"disengage, engaged=0x%lx\n", engaged);
-			print_time = time + (XPC_DISENGAGE_PRINTMSG_INTERVAL *
-						sn_rtc_cycles_per_second);
-		}
-	}
-	dev_info(xpc_part, "finished waiting for remote partitions to "
-				"disengage, engaged=0x%lx\n", engaged);
 }
 
 
···
 
 
 /*
- * This function is called when the system is being rebooted.
+ * Notify other partitions to disengage from all references to our memory.
+ */
+static void
+xpc_die_disengage(void)
+{
+	struct xpc_partition *part;
+	partid_t partid;
+	unsigned long engaged;
+	long time, printmsg_time, disengage_request_timeout;
+
+
+	/* keep xpc_hb_checker thread from doing anything (just in case) */
+	xpc_exiting = 1;
+
+	xpc_vars->heartbeating_to_mask = 0;  /* indicate we're deactivated */
+
+	for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
+		part = &xpc_partitions[partid];
+
+		if (!XPC_SUPPORTS_DISENGAGE_REQUEST(part->
+							remote_vars_version)) {
+
+			/* just in case it was left set by an earlier XPC */
+			xpc_clear_partition_engaged(1UL << partid);
+			continue;
+		}
+
+		if (xpc_partition_engaged(1UL << partid) ||
+					part->act_state != XPC_P_INACTIVE) {
+			xpc_request_partition_disengage(part);
+			xpc_mark_partition_disengaged(part);
+			xpc_IPI_send_disengage(part);
+		}
+	}
+
+	time = rtc_time();
+	printmsg_time = time +
+		(XPC_DISENGAGE_PRINTMSG_INTERVAL * sn_rtc_cycles_per_second);
+	disengage_request_timeout = time +
+		(xpc_disengage_request_timelimit * sn_rtc_cycles_per_second);
+
+	/* wait for all other partitions to disengage from us */
+
+	while (1) {
+		engaged = xpc_partition_engaged(-1UL);
+		if (!engaged) {
+			dev_info(xpc_part, "all partitions have disengaged\n");
+			break;
+		}
+
+		time = rtc_time();
+		if (time >= disengage_request_timeout) {
+			for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
+				if (engaged & (1UL << partid)) {
+					dev_info(xpc_part, "disengage from "
+						"remote partition %d timed "
+						"out\n", partid);
+				}
+			}
+			break;
+		}
+
+		if (time >= printmsg_time) {
+			dev_info(xpc_part, "waiting for remote partitions to "
+				"disengage, timeout in %ld seconds\n",
+				(disengage_request_timeout - time) /
+						sn_rtc_cycles_per_second);
+			printmsg_time = time +
+					(XPC_DISENGAGE_PRINTMSG_INTERVAL *
+						sn_rtc_cycles_per_second);
+		}
+	}
+}
+
+
+/*
+ * This function is called when the system is being restarted or halted due
+ * to some sort of system failure. If this is the case we need to notify the
+ * other partitions to disengage from all references to our memory.
+ * This function can also be called when our heartbeater could be offlined
+ * for a time. In this case we need to notify other partitions to not worry
+ * about the lack of a heartbeat.
  */
 static int
 xpc_system_die(struct notifier_block *nb, unsigned long event, void *unused)
···
 	case DIE_MACHINE_HALT:
 		xpc_die_disengage();
 		break;
+
+	case DIE_KDEBUG_ENTER:
+		/* Should lack of heartbeat be ignored by other partitions? */
+		if (!xpc_kdebug_ignore) {
+			break;
+		}
+		/* fall through */
 	case DIE_MCA_MONARCH_ENTER:
 	case DIE_INIT_MONARCH_ENTER:
 		xpc_vars->heartbeat++;
 		xpc_vars->heartbeat_offline = 1;
 		break;
+
+	case DIE_KDEBUG_LEAVE:
+		/* Is lack of heartbeat being ignored by other partitions? */
+		if (!xpc_kdebug_ignore) {
+			break;
+		}
+		/* fall through */
 	case DIE_MCA_MONARCH_LEAVE:
 	case DIE_INIT_MONARCH_LEAVE:
 		xpc_vars->heartbeat++;
···
 module_param(xpc_disengage_request_timelimit, int, 0);
 MODULE_PARM_DESC(xpc_disengage_request_timelimit, "Number of seconds to wait "
 		"for disengage request to complete.");
+
+module_param(xpc_kdebug_ignore, int, 0);
+MODULE_PARM_DESC(xpc_kdebug_ignore, "Should lack of heartbeat be ignored by "
+		"other partitions when dropping into kdebug.");
 

arch/ia64/sn/kernel/xpc_partition.c

···
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2004-2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 
···
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/nodepda.h>
 #include <asm/sn/addrs.h>
-#include "xpc.h"
+#include <asm/sn/xpc.h>
 
 
 /* XPC is exiting flag */
···
 		}
 	}
 
-	if (!xpc_partition_disengaged(part)) {
+	if (part->disengage_request_timeout > 0 &&
+					!xpc_partition_disengaged(part)) {
 		/* still waiting on other side to disengage from us */
 		return;
 	}
···
 			 * request in a timely fashion, so assume it's dead.
 			 */
 
+			dev_info(xpc_part, "disengage from remote partition %d "
+				"timed out\n", partid);
+			xpc_disengage_request_timedout = 1;
 			xpc_clear_partition_engaged(1UL << partid);
 			disengaged = 1;
 		}

arch/ia64/sn/pci/pcibr/pcibr_dma.c

···
 	uint64_t flags;
 	uint64_t itte;
 	struct hubdev_info *hubinfo;
-	volatile struct sn_flush_device_list *p;
+	volatile struct sn_flush_device_kernel *p;
+	volatile struct sn_flush_device_common *common;
+
 	struct sn_flush_nasid_entry *flush_nasid_list;
 
 	if (!sn_ioif_inited)
···
 	p = &flush_nasid_list->widget_p[wid_num][0];
 
 	/* find a matching BAR */
-	for (i = 0; i < DEV_PER_WIDGET; i++) {
+	for (i = 0; i < DEV_PER_WIDGET; i++,p++) {
+		common = p->common;
 		for (j = 0; j < PCI_ROM_RESOURCE; j++) {
-			if (p->sfdl_bar_list[j].start == 0)
+			if (common->sfdl_bar_list[j].start == 0)
 				break;
-			if (addr >= p->sfdl_bar_list[j].start
-			    && addr <= p->sfdl_bar_list[j].end)
+			if (addr >= common->sfdl_bar_list[j].start
+			    && addr <= common->sfdl_bar_list[j].end)
 				break;
 		}
-		if (j < PCI_ROM_RESOURCE && p->sfdl_bar_list[j].start != 0)
+		if (j < PCI_ROM_RESOURCE && common->sfdl_bar_list[j].start != 0)
 			break;
-		p++;
 	}
 
 	/* if no matching BAR, return without doing anything. */
···
 		if ((1 << XWIDGET_PART_REV_NUM_REV(revnum)) & PV907516) {
 			return;
 		} else {
-			pcireg_wrb_flush_get(p->sfdl_pcibus_info,
-					     (p->sfdl_slot - 1));
+			pcireg_wrb_flush_get(common->sfdl_pcibus_info,
+					     (common->sfdl_slot - 1));
 		}
 	} else {
-		spin_lock_irqsave(&((struct sn_flush_device_list *)p)->
-				  sfdl_flush_lock, flags);
-
-		*p->sfdl_flush_addr = 0;
+		spin_lock_irqsave((spinlock_t *)&p->sfdl_flush_lock,
+				  flags);
+		*common->sfdl_flush_addr = 0;
 
 		/* force an interrupt. */
-		*(volatile uint32_t *)(p->sfdl_force_int_addr) = 1;
+		*(volatile uint32_t *)(common->sfdl_force_int_addr) = 1;
 
 		/* wait for the interrupt to come back. */
-		while (*(p->sfdl_flush_addr) != 0x10f)
+		while (*(common->sfdl_flush_addr) != 0x10f)
 			cpu_relax();
 
 		/* okay, everything is synched up. */
-		spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock, flags);
+		spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock,
+				       flags);
 	}
 	return;
 }

arch/ia64/sn/pci/pcibr/pcibr_provider.c

···
 	cnodeid_t near_cnode;
 	struct hubdev_info *hubdev_info;
 	struct pcibus_info *soft;
-	struct sn_flush_device_list *sn_flush_device_list;
+	struct sn_flush_device_kernel *sn_flush_device_kernel;
+	struct sn_flush_device_common *common;
 
 	if (! IS_PCI_BRIDGE_ASIC(prom_bussoft->bs_asic_type)) {
 		return NULL;
···
 	hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 
 	if (hubdev_info->hdi_flush_nasid_list.widget_p) {
-		sn_flush_device_list = hubdev_info->hdi_flush_nasid_list.
+		sn_flush_device_kernel = hubdev_info->hdi_flush_nasid_list.
 		    widget_p[(int)soft->pbi_buscommon.bs_xid];
-		if (sn_flush_device_list) {
+		if (sn_flush_device_kernel) {
 			for (j = 0; j < DEV_PER_WIDGET;
-			     j++, sn_flush_device_list++) {
-				if (sn_flush_device_list->sfdl_slot == -1)
+			     j++, sn_flush_device_kernel++) {
+				common = sn_flush_device_kernel->common;
+				if (common->sfdl_slot == -1)
 					continue;
-				if ((sn_flush_device_list->
-				     sfdl_persistent_segment ==
+				if ((common->sfdl_persistent_segment ==
 				     soft->pbi_buscommon.bs_persist_segment) &&
-				     (sn_flush_device_list->
-				     sfdl_persistent_busnum ==
+				     (common->sfdl_persistent_busnum ==
 				     soft->pbi_buscommon.bs_persist_busnum))
-					sn_flush_device_list->sfdl_pcibus_info =
+					common->sfdl_pcibus_info =
 					    soft;
 			}
 		}

include/asm-ia64/kprobes.h

···
 	unsigned long status;
 };
 
+#define	MAX_PARAM_RSE_SIZE	(0x60+0x60/0x3f)
 /* per-cpu kprobe control block */
 struct kprobe_ctlblk {
 	unsigned long kprobe_status;
 	struct pt_regs jprobe_saved_regs;
+	unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE];
+	unsigned long *bsp;
+	unsigned long cfm;
 	struct prev_kprobe prev_kprobe;
 };
 
···
 static inline void jprobe_return(void)
 {
 }
+extern void invalidate_stacked_regs(void);
+extern void flush_register_stack(void);
 
 #endif				/* _ASM_KPROBES_H */

include/asm-ia64/sn/sn_sal.h

···
 #define  SN_SAL_IOIF_GET_HUBDEV_INFO		   0x02000055
 #define  SN_SAL_IOIF_GET_PCIBUS_INFO		   0x02000056
 #define  SN_SAL_IOIF_GET_PCIDEV_INFO		   0x02000057
-#define  SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST	   0x02000058
+#define  SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST	   0x02000058	// deprecated
+#define  SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST	   0x0200005a
 
 #define SN_SAL_HUB_ERROR_INTERRUPT		   0x02000060
 #define SN_SAL_BTE_RECOVER			   0x02000061
···
 	struct ia64_sal_retval rv;
 
 	rv.status = 0;
-	SAL_CALL_NOLOCK(rv, SN_SAL_BTE_RECOVER, 0, 0, 0, 0, 0, 0, 0);
+	SAL_CALL_NOLOCK(rv, SN_SAL_BTE_RECOVER, (u64)nasid, 0, 0, 0, 0, 0, 0);
 	if (rv.status == SALRET_NOT_IMPLEMENTED)
 		return 0;
 	return (int) rv.status;

include/asm-ia64/sn/xp.h

···
 
 	xpcOpenCloseError,	/* 50: channel open/close protocol error */
 
-	xpcUnknownReason	/* 51: unknown reason -- must be last in list */
+	xpcDisconnected,	/* 51: channel disconnected (closed) */
+
+	xpcUnknownReason	/* 52: unknown reason -- must be last in list */
 };
 
 

include/asm-ia64/thread_info.h

···
 #define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_MEMDIE		17
 #define TIF_MCA_INIT		18	/* this task is processing MCA or INIT */
+#define TIF_DB_DISABLED		19	/* debug trap disabled for fsyscall */
 
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
···
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
-#define _TIF_SIGDELAYED	(1 << TIF_SIGDELAYED)
+#define _TIF_SIGDELAYED		(1 << TIF_SIGDELAYED)
 #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
 #define _TIF_MCA_INIT		(1 << TIF_MCA_INIT)
+#define _TIF_DB_DISABLED	(1 << TIF_DB_DISABLED)
 
 /* "work to do on user-return" bits */
 #define TIF_ALLWORK_MASK	(_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SIGDELAYED)