34 files changed, 1146 insertions, 63 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 683b12c6f76c..75d839715b2f 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -434,6 +434,29 @@ config IA64_ESI
 
 source "drivers/sn/Kconfig"
 
+config KEXEC
+        bool "kexec system call (EXPERIMENTAL)"
+        depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
+        help
+          kexec is a system call that implements the ability to shutdown your
+          current kernel, and to start another kernel.  It is like a reboot
+          but it is indepedent of the system firmware.   And like a reboot
+          you can start any kernel with it, not just Linux.
+
+          The name comes from the similiarity to the exec system call.
+
+          It is an ongoing process to be certain the hardware in a machine
+          is properly shutdown, so do not be surprised if this code does not
+          initially work for you.  It may help to enable device hotplugging
+          support.  As of this writing the exact hardware interface is
+          strongly in flux, so no good recommendation can be made.
+
+config CRASH_DUMP
+          bool "kernel crash dumps (EXPERIMENTAL)"
+          depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
+          help
+            Generate crash dump after being started by kexec.
+
 source "drivers/firmware/Kconfig"
 
 source "fs/Kconfig.binfmt"
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 14691cda05c3..ce49fe3a3b56 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -1672,15 +1672,13 @@ ioc_sac_init(struct ioc *ioc)
          * SAC (single address cycle) addressable, so allocate a
          * pseudo-device to enforce that.
          */
-        sac = kmalloc(sizeof(*sac), GFP_KERNEL);
+        sac = kzalloc(sizeof(*sac), GFP_KERNEL);
         if (!sac)
                 panic(PFX "Couldn't allocate struct pci_dev");
-        memset(sac, 0, sizeof(*sac));
 
-        controller = kmalloc(sizeof(*controller), GFP_KERNEL);
+        controller = kzalloc(sizeof(*controller), GFP_KERNEL);
         if (!controller)
                 panic(PFX "Couldn't allocate struct pci_controller");
-        memset(controller, 0, sizeof(*controller));
 
         controller->iommu = ioc;
         sac->sysdata = controller;
@@ -1737,12 +1735,10 @@ ioc_init(u64 hpa, void *handle)
         struct ioc *ioc;
         struct ioc_iommu *info;
 
-        ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
+        ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
         if (!ioc)
                 return NULL;
 
-        memset(ioc, 0, sizeof(*ioc));
-
         ioc->next = ioc_list;
         ioc_list = ioc;
 
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index b62f0c4d2c7c..1f16ebb9a800 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -684,12 +684,11 @@ static int get_async_struct(int line, struct async_struct **ret_info)
                 *ret_info = sstate->info;
                 return 0;
         }
-        info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+        info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
         if (!info) {
                 sstate->count--;
                 return -ENOMEM;
         }
-        memset(info, 0, sizeof(struct async_struct));
         init_waitqueue_head(&info->open_wait);
         init_waitqueue_head(&info->close_wait);
         init_waitqueue_head(&info->delta_msr_wait);
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index cfa099b04cda..8ae384eb5357 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_IA64_CYCLONE)	+= cyclone.o
 obj-$(CONFIG_CPU_FREQ)          += cpufreq/
 obj-$(CONFIG_IA64_MCA_RECOVERY) += mca_recovery.o
 obj-$(CONFIG_KPROBES)           += kprobes.o jprobes.o
+obj-$(CONFIG_KEXEC)             += machine_kexec.o relocate_kernel.o crash.o
 obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR)   += uncached.o
 obj-$(CONFIG_AUDIT)             += audit.o
 obj-$(CONFIG_PCI_MSI)           += msi_ia64.o
diff --git a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
index 86faf221a070..088f130197ae 100644
--- a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
+++ b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
@@ -68,7 +68,8 @@ processor_get_pstate (
 
         dprintk("processor_get_pstate\n");
 
-        retval = ia64_pal_get_pstate(&pstate_index);
+        retval = ia64_pal_get_pstate(&pstate_index,
+                                     PAL_GET_PSTATE_TYPE_INSTANT);
         *value = (u32) pstate_index;
 
         if (retval)
@@ -91,7 +92,7 @@ extract_clock (
         dprintk("extract_clock\n");
 
         for (i = 0; i < data->acpi_data.state_count; i++) {
-                if (value >= data->acpi_data.states[i].control)
+                if (value == data->acpi_data.states[i].status)
                         return data->acpi_data.states[i].core_frequency;
         }
         return data->acpi_data.states[i-1].core_frequency;
@@ -117,11 +118,7 @@ processor_get_freq (
                 goto migrate_end;
         }
 
-        /*
-         * processor_get_pstate gets the average frequency since the
-         * last get. So, do two PAL_get_freq()...
-         */
-        ret = processor_get_pstate(&value);
+        /* processor_get_pstate gets the instantaneous frequency */
         ret = processor_get_pstate(&value);
 
         if (ret) {
diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
new file mode 100644
index 000000000000..0aabedf95dad
--- /dev/null
+++ b/arch/ia64/kernel/crash.c
@@ -0,0 +1,245 @@
+/*
+ * arch/ia64/kernel/crash.c
+ *
+ * Architecture specific (ia64) functions for kexec based crash dumps.
+ *
+ * Created by: Khalid Aziz <khalid.aziz@hp.com>
+ * Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
+ * Copyright (C) 2005 Intel Corp        Zou Nan hai <nanhai.zou@intel.com>
+ *
+ */
+#include <linux/smp.h>
+#include <linux/delay.h>
+#include <linux/crash_dump.h>
+#include <linux/bootmem.h>
+#include <linux/kexec.h>
+#include <linux/elfcore.h>
+#include <linux/sysctl.h>
+#include <linux/init.h>
+
+#include <asm/kdebug.h>
+#include <asm/mca.h>
+#include <asm/uaccess.h>
+
+int kdump_status[NR_CPUS];
+atomic_t kdump_cpu_freezed;
+atomic_t kdump_in_progress;
+int kdump_on_init = 1;
+ssize_t
+copy_oldmem_page(unsigned long pfn, char *buf,
+                size_t csize, unsigned long offset, int userbuf)
+{
+        void  *vaddr;
+
+        if (!csize)
+                return 0;
+        vaddr = __va(pfn<<PAGE_SHIFT);
+        if (userbuf) {
+                if (copy_to_user(buf, (vaddr + offset), csize)) {
+                        return -EFAULT;
+                }
+        } else
+                memcpy(buf, (vaddr + offset), csize);
+        return csize;
+}
+
+static inline Elf64_Word
+*append_elf_note(Elf64_Word *buf, char *name, unsigned type, void *data,
+                size_t data_len)
+{
+        struct elf_note *note = (struct elf_note *)buf;
+        note->n_namesz = strlen(name) + 1;
+        note->n_descsz = data_len;
+        note->n_type   = type;
+        buf += (sizeof(*note) + 3)/4;
+        memcpy(buf, name, note->n_namesz);
+        buf += (note->n_namesz + 3)/4;
+        memcpy(buf, data, data_len);
+        buf += (data_len + 3)/4;
+        return buf;
+}
+
+static void
+final_note(void *buf)
+{
+        memset(buf, 0, sizeof(struct elf_note));
+}
+
+extern void ia64_dump_cpu_regs(void *);
+
+static DEFINE_PER_CPU(struct elf_prstatus, elf_prstatus);
+
+void
+crash_save_this_cpu()
+{
+        void *buf;
+        unsigned long cfm, sof, sol;
+
+        int cpu = smp_processor_id();
+        struct elf_prstatus *prstatus = &per_cpu(elf_prstatus, cpu);
+
+        elf_greg_t *dst = (elf_greg_t *)&(prstatus->pr_reg);
+        memset(prstatus, 0, sizeof(*prstatus));
+        prstatus->pr_pid = current->pid;
+
+        ia64_dump_cpu_regs(dst);
+        cfm = dst[43];
+        sol = (cfm >> 7) & 0x7f;
+        sof = cfm & 0x7f;
+        dst[46] = (unsigned long)ia64_rse_skip_regs((unsigned long *)dst[46],
+                        sof - sol);
+
+        buf = (u64 *) per_cpu_ptr(crash_notes, cpu);
+        if (!buf)
+                return;
+        buf = append_elf_note(buf, "CORE", NT_PRSTATUS, prstatus,
+                        sizeof(*prstatus));
+        final_note(buf);
+}
+
+static int
+kdump_wait_cpu_freeze(void)
+{
+        int cpu_num = num_online_cpus() - 1;
+        int timeout = 1000;
+        while(timeout-- > 0) {
+                if (atomic_read(&kdump_cpu_freezed) == cpu_num)
+                        return 0;
+                udelay(1000);
+        }
+        return 1;
+}
+
+void
+machine_crash_shutdown(struct pt_regs *pt)
+{
+        /* This function is only called after the system
+         * has paniced or is otherwise in a critical state.
+         * The minimum amount of code to allow a kexec'd kernel
+         * to run successfully needs to happen here.
+         *
+         * In practice this means shooting down the other cpus in
+         * an SMP system.
+         */
+        kexec_disable_iosapic();
+#ifdef CONFIG_SMP
+        kdump_smp_send_stop();
+        if (kdump_wait_cpu_freeze() && kdump_on_init)   {
+                //not all cpu response to IPI, send INIT to freeze them
+                kdump_smp_send_init();
+        }
+#endif
+}
+
+static void
+machine_kdump_on_init(void)
+{
+        local_irq_disable();
+        kexec_disable_iosapic();
+        machine_kexec(ia64_kimage);
+}
+
+void
+kdump_cpu_freeze(struct unw_frame_info *info, void *arg)
+{
+        int cpuid;
+        local_irq_disable();
+        cpuid = smp_processor_id();
+        crash_save_this_cpu();
+        current->thread.ksp = (__u64)info->sw - 16;
+        atomic_inc(&kdump_cpu_freezed);
+        kdump_status[cpuid] = 1;
+        mb();
+        if (cpuid == 0) {
+                for (;;)
+                        cpu_relax();
+        } else
+                ia64_jump_to_sal(&sal_boot_rendez_state[cpuid]);
+}
+
+static int
+kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
+{
+        struct ia64_mca_notify_die *nd;
+        struct die_args *args = data;
+
+        if (!kdump_on_init)
+                return NOTIFY_DONE;
+
+        if (val != DIE_INIT_MONARCH_ENTER &&
+            val != DIE_INIT_SLAVE_ENTER &&
+            val != DIE_MCA_RENDZVOUS_LEAVE &&
+            val != DIE_MCA_MONARCH_LEAVE)
+                return NOTIFY_DONE;
+
+        nd = (struct ia64_mca_notify_die *)args->err;
+        /* Reason code 1 means machine check rendezous*/
+        if ((val == DIE_INIT_MONARCH_ENTER || DIE_INIT_SLAVE_ENTER) &&
+                 nd->sos->rv_rc == 1)
+                return NOTIFY_DONE;
+
+        switch (val) {
+                case DIE_INIT_MONARCH_ENTER:
+                        machine_kdump_on_init();
+                        break;
+                case DIE_INIT_SLAVE_ENTER:
+                        unw_init_running(kdump_cpu_freeze, NULL);
+                        break;
+                case DIE_MCA_RENDZVOUS_LEAVE:
+                        if (atomic_read(&kdump_in_progress))
+                                unw_init_running(kdump_cpu_freeze, NULL);
+                        break;
+                case DIE_MCA_MONARCH_LEAVE:
+                     /* die_register->signr indicate if MCA is recoverable */
+                        if (!args->signr)
+                                machine_kdump_on_init();
+                        break;
+        }
+        return NOTIFY_DONE;
+}
+
+#ifdef CONFIG_SYSCTL
+static ctl_table kdump_on_init_table[] = {
+        {
+                .ctl_name = CTL_UNNUMBERED,
+                .procname = "kdump_on_init",
+                .data = &kdump_on_init,
+                .maxlen = sizeof(int),
+                .mode = 0644,
+                .proc_handler = &proc_dointvec,
+        },
+        { .ctl_name = 0 }
+};
+
+static ctl_table sys_table[] = {
+        {
+          .ctl_name = CTL_KERN,
+          .procname = "kernel",
+          .mode = 0555,
+          .child = kdump_on_init_table,
+        },
+        { .ctl_name = 0 }
+};
+#endif
+
+static int
+machine_crash_setup(void)
+{
+        char *from = strstr(saved_command_line, "elfcorehdr=");
+        static struct notifier_block kdump_init_notifier_nb = {
+                .notifier_call = kdump_init_notifier,
+        };
+        int ret;
+        if (from)
+                elfcorehdr_addr = memparse(from+11, &from);
+        saved_max_pfn = (unsigned long)-1;
+        if((ret = register_die_notifier(&kdump_init_notifier_nb)) != 0)
+                return ret;
+#ifdef CONFIG_SYSCTL
+        register_sysctl_table(sys_table, 0);
+#endif
+        return 0;
+}
+
+__initcall(machine_crash_setup);
+
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index bb8770a177b5..0b25a7d4e1e4 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -26,6 +26,7 @@
 #include <linux/types.h>
 #include <linux/time.h>
 #include <linux/efi.h>
+#include <linux/kexec.h>
 
 #include <asm/io.h>
 #include <asm/kregs.h>
@@ -41,7 +42,7 @@ extern efi_status_t efi_call_phys (void *, ...);
 struct efi efi;
 EXPORT_SYMBOL(efi);
 static efi_runtime_services_t *runtime;
-static unsigned long mem_limit = ~0UL, max_addr = ~0UL;
+static unsigned long mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
 
 #define efi_call_virt(f, args...)       (*(f))(args)
 
@@ -224,7 +225,7 @@ efi_gettimeofday (struct timespec *ts)
 }
 
 static int
-is_available_memory (efi_memory_desc_t *md)
+is_memory_available (efi_memory_desc_t *md)
 {
         if (!(md->attribute & EFI_MEMORY_WB))
                 return 0;
@@ -421,6 +422,8 @@ efi_init (void)
                         mem_limit = memparse(cp + 4, &cp);
                 } else if (memcmp(cp, "max_addr=", 9) == 0) {
                         max_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
+                } else if (memcmp(cp, "min_addr=", 9) == 0) {
+                        min_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
                 } else {
                         while (*cp != ' ' && *cp)
                                 ++cp;
@@ -428,6 +431,8 @@ efi_init (void)
                                 ++cp;
                 }
         }
+        if (min_addr != 0UL)
+                printk(KERN_INFO "Ignoring memory below %luMB\n", min_addr >> 20);
         if (max_addr != ~0UL)
                 printk(KERN_INFO "Ignoring memory above %luMB\n", max_addr >> 20);
 
@@ -887,14 +892,15 @@ find_memmap_space (void)
                         }
                         contig_high = GRANULEROUNDDOWN(contig_high);
                 }
-                if (!is_available_memory(md) || md->type == EFI_LOADER_DATA)
+                if (!is_memory_available(md) || md->type == EFI_LOADER_DATA)
                         continue;
 
                 /* Round ends inward to granule boundaries */
                 as = max(contig_low, md->phys_addr);
                 ae = min(contig_high, efi_md_end(md));
 
-                /* keep within max_addr= command line arg */
+                /* keep within max_addr= and min_addr= command line arg */
+                as = max(as, min_addr);
                 ae = min(ae, max_addr);
                 if (ae <= as)
                         continue;
@@ -962,7 +968,7 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
                         }
                         contig_high = GRANULEROUNDDOWN(contig_high);
                 }
-                if (!is_available_memory(md))
+                if (!is_memory_available(md))
                         continue;
 
                 /*
@@ -1004,7 +1010,8 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
                 } else
                         ae = efi_md_end(md);
 
-                /* keep within max_addr= command line arg */
+                /* keep within max_addr= and min_addr= command line arg */
+                as = max(as, min_addr);
                 ae = min(ae, max_addr);
                 if (ae <= as)
                         continue;
@@ -1116,6 +1123,58 @@ efi_initialize_iomem_resources(struct resource *code_resource,
                          */
                         insert_resource(res, code_resource);
                         insert_resource(res, data_resource);
+#ifdef CONFIG_KEXEC
+                        insert_resource(res, &efi_memmap_res);
+                        insert_resource(res, &boot_param_res);
+                        if (crashk_res.end > crashk_res.start)
+                                insert_resource(res, &crashk_res);
+#endif
                 }
         }
 }
+
+#ifdef CONFIG_KEXEC
+/* find a block of memory aligned to 64M exclude reserved regions
+   rsvd_regions are sorted
+ */
+unsigned long
+kdump_find_rsvd_region (unsigned long size,
+                struct rsvd_region *r, int n)
+{
+  int i;
+  u64 start, end;
+  u64 alignment = 1UL << _PAGE_SIZE_64M;
+  void *efi_map_start, *efi_map_end, *p;
+  efi_memory_desc_t *md;
+  u64 efi_desc_size;
+
+  efi_map_start = __va(ia64_boot_param->efi_memmap);
+  efi_map_end   = efi_map_start + ia64_boot_param->efi_memmap_size;
+  efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+  for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
+          md = p;
+          if (!efi_wb(md))
+                  continue;
+          start = ALIGN(md->phys_addr, alignment);
+          end = efi_md_end(md);
+          for (i = 0; i < n; i++) {
+                if (__pa(r[i].start) >= start && __pa(r[i].end) < end) {
+                        if (__pa(r[i].start) > start + size)
+                                return start;
+                        start = ALIGN(__pa(r[i].end), alignment);
+                        if (i < n-1 && __pa(r[i+1].start) < start + size)
+                                continue;
+                        else
+                                break;
+                }
+          }
+          if (end > start + size)
+                return start;
+  }
+
+  printk(KERN_WARNING "Cannot reserve 0x%lx byte of memory for crashdump\n",
+        size);
+  return ~0UL;
+}
+#endif
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 3390b7c5a63f..15234ed3a341 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1575,7 +1575,7 @@ sys_call_table:
         data8 sys_mq_timedreceive               // 1265
         data8 sys_mq_notify
         data8 sys_mq_getsetattr
-        data8 sys_ni_syscall                    // reserved for kexec_load
+        data8 sys_kexec_load
         data8 sys_ni_syscall                    // reserved for vserver
         data8 sys_waitid                        // 1270
         data8 sys_add_key
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index 879c1817bd1c..bd17190bebb6 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -14,6 +14,7 @@ EXPORT_SYMBOL(strlen);
 
 #include <asm/checksum.h>
 EXPORT_SYMBOL(ip_fast_csum);            /* hand-coded assembly */
+EXPORT_SYMBOL(csum_ipv6_magic);
 
 #include <asm/semaphore.h>
 EXPORT_SYMBOL(__down);
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 60d64950e3c2..0fc5fb7865cf 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -288,6 +288,27 @@ nop (unsigned int irq)
         /* do nothing... */
 }
 
+
+#ifdef CONFIG_KEXEC
+void
+kexec_disable_iosapic(void)
+{
+        struct iosapic_intr_info *info;
+        struct iosapic_rte_info *rte;
+        u8 vec = 0;
+        for (info = iosapic_intr_info; info <
+                        iosapic_intr_info + IA64_NUM_VECTORS; ++info, ++vec) {
+                list_for_each_entry(rte, &info->rtes,
+                                rte_list) {
+                        iosapic_write(rte->addr,
+                                        IOSAPIC_RTE_LOW(rte->rte_index),
+                                        IOSAPIC_MASK|vec);
+                        iosapic_eoi(rte->addr, vec);
+                }
+        }
+}
+#endif
+
 static void
 mask_irq (unsigned int irq)
 {
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 4d592ee9300b..76e778951e20 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -851,7 +851,7 @@ static void ia64_get_bsp_cfm(struct unw_frame_info *info, void *arg)
                         return;
                 }
         } while (unw_unwind(info) >= 0);
-        lp->bsp = 0;
+        lp->bsp = NULL;
         lp->cfm = 0;
         return;
 }
diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
new file mode 100644
index 000000000000..468233fa2cee
--- /dev/null
+++ b/arch/ia64/kernel/machine_kexec.c
@@ -0,0 +1,133 @@
+/*
+ * arch/ia64/kernel/machine_kexec.c
+ *
+ * Handle transition of Linux booting another kernel
+ * Copyright (C) 2005 Hewlett-Packard Development Comapny, L.P.
+ * Copyright (C) 2005 Khalid Aziz <khalid.aziz@hp.com>
+ * Copyright (C) 2006 Intel Corp, Zou Nan hai <nanhai.zou@intel.com>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+
+#include <linux/mm.h>
+#include <linux/kexec.h>
+#include <linux/cpu.h>
+#include <linux/irq.h>
+#include <asm/mmu_context.h>
+#include <asm/setup.h>
+#include <asm/delay.h>
+#include <asm/meminit.h>
+
+typedef void (*relocate_new_kernel_t)(unsigned long, unsigned long,
+                struct ia64_boot_param *, unsigned long);
+
+struct kimage *ia64_kimage;
+
+struct resource efi_memmap_res = {
+        .name  = "EFI Memory Map",
+        .start = 0,
+        .end   = 0,
+        .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+struct resource boot_param_res = {
+        .name  = "Boot parameter",
+        .start = 0,
+        .end   = 0,
+        .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+
+/*
+ * Do what every setup is needed on image and the
+ * reboot code buffer to allow us to avoid allocations
+ * later.
+ */
+int machine_kexec_prepare(struct kimage *image)
+{
+        void *control_code_buffer;
+        const unsigned long *func;
+
+        func = (unsigned long *)&relocate_new_kernel;
+        /* Pre-load control code buffer to minimize work in kexec path */
+        control_code_buffer = page_address(image->control_code_page);
+        memcpy((void *)control_code_buffer, (const void *)func[0],
+                        relocate_new_kernel_size);
+        flush_icache_range((unsigned long)control_code_buffer,
+                        (unsigned long)control_code_buffer + relocate_new_kernel_size);
+        ia64_kimage = image;
+
+        return 0;
+}
+
+void machine_kexec_cleanup(struct kimage *image)
+{
+}
+
+void machine_shutdown(void)
+{
+        int cpu;
+
+        for_each_online_cpu(cpu) {
+                if (cpu != smp_processor_id())
+                        cpu_down(cpu);
+        }
+        kexec_disable_iosapic();
+}
+
+/*
+ * Do not allocate memory (or fail in any way) in machine_kexec().
+ * We are past the point of no return, committed to rebooting now.
+ */
+extern void *efi_get_pal_addr(void);
+static void ia64_machine_kexec(struct unw_frame_info *info, void *arg)
+{
+        struct kimage *image = arg;
+        relocate_new_kernel_t rnk;
+        void *pal_addr = efi_get_pal_addr();
+        unsigned long code_addr = (unsigned long)page_address(image->control_code_page);
+        unsigned long vector;
+        int ii;
+
+        if (image->type == KEXEC_TYPE_CRASH) {
+                crash_save_this_cpu();
+                current->thread.ksp = (__u64)info->sw - 16;
+        }
+
+        /* Interrupts aren't acceptable while we reboot */
+        local_irq_disable();
+
+        /* Mask CMC and Performance Monitor interrupts */
+        ia64_setreg(_IA64_REG_CR_PMV, 1 << 16);
+        ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16);
+
+        /* Mask ITV and Local Redirect Registers */
+        ia64_set_itv(1 << 16);
+        ia64_set_lrr0(1 << 16);
+        ia64_set_lrr1(1 << 16);
+
+        /* terminate possible nested in-service interrupts */
+        for (ii = 0; ii < 16; ii++)
+                ia64_eoi();
+
+        /* unmask TPR and clear any pending interrupts */
+        ia64_setreg(_IA64_REG_CR_TPR, 0);
+        ia64_srlz_d();
+        vector = ia64_get_ivr();
+        while (vector != IA64_SPURIOUS_INT_VECTOR) {
+                ia64_eoi();
+                vector = ia64_get_ivr();
+        }
+        platform_kernel_launch_event();
+        rnk = (relocate_new_kernel_t)&code_addr;
+        (*rnk)(image->head, image->start, ia64_boot_param,
+                     GRANULEROUNDDOWN((unsigned long) pal_addr));
+        BUG();
+}
+
+void machine_kexec(struct kimage *image)
+{
+        unw_init_running(ia64_machine_kexec, image);
+        for(;;);
+}
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 6bedd97570ca..87c1c4f42872 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -82,6 +82,7 @@
 #include <asm/system.h>
 #include <asm/sal.h>
 #include <asm/mca.h>
+#include <asm/kexec.h>
 
 #include <asm/irq.h>
 #include <asm/hw_irq.h>
@@ -1238,6 +1239,10 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
         } else {
                 /* Dump buffered message to console */
                 ia64_mlogbuf_finish(1);
+#ifdef CONFIG_CRASH_DUMP
+                atomic_set(&kdump_in_progress, 1);
+                monarch_cpu = -1;
+#endif
         }
         if (notify_die(DIE_MCA_MONARCH_LEAVE, "MCA", regs, (long)&nd, 0, recover)
                         == NOTIFY_STOP)
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index c4c10a0b99d9..a71df9ae0397 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -16,6 +16,7 @@
  * 02/05/2001   S.Eranian       fixed module support
  * 10/23/2001   S.Eranian       updated pal_perf_mon_info bug fixes
  * 03/24/2004   Ashok Raj       updated to work with CPU Hotplug
+ * 10/26/2006   Russ Anderson   updated processor features to rev 2.2 spec
  */
 #include <linux/types.h>
 #include <linux/errno.h>
@@ -314,13 +315,20 @@ vm_info(char *page)
                      "Protection Key Registers(PKR)  : %d\n"
                      "Implemented bits in PKR.key    : %d\n"
                      "Hash Tag ID                    : 0x%x\n"
-                     "Size of RR.rid                 : %d\n",
+                     "Size of RR.rid                 : %d\n"
+                     "Max Purges                     : ",
                      vm_info_1.pal_vm_info_1_s.phys_add_size,
                      vm_info_2.pal_vm_info_2_s.impl_va_msb+1,
                      vm_info_1.pal_vm_info_1_s.max_pkr+1,
                      vm_info_1.pal_vm_info_1_s.key_size,
                      vm_info_1.pal_vm_info_1_s.hash_tag_id,
                      vm_info_2.pal_vm_info_2_s.rid_size);
+                if (vm_info_2.pal_vm_info_2_s.max_purges == PAL_MAX_PURGES)
+                        p += sprintf(p, "unlimited\n");
+                else
+                        p += sprintf(p, "%d\n",
+                                vm_info_2.pal_vm_info_2_s.max_purges ?
+                                vm_info_2.pal_vm_info_2_s.max_purges : 1);
         }
 
         if (ia64_pal_mem_attrib(&attrib) == 0) {
@@ -467,7 +475,11 @@ static const char *proc_features[]={
         NULL,NULL,NULL,NULL,NULL,NULL,NULL, NULL,NULL,
         NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
         NULL,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,
-        NULL,NULL,NULL,NULL,NULL,
+        "Unimplemented instruction address fault",
+        "INIT, PMI, and LINT pins",
+        "Simple unimplemented instr addresses",
+        "Variable P-state performance",
+        "Virtual machine features implemented",
         "XIP,XPSR,XFS implemented",
         "XR1-XR3 implemented",
         "Disable dynamic predicate prediction",
@@ -475,7 +487,11 @@ static const char *proc_features[]={
         "Disable dynamic data cache prefetch",
         "Disable dynamic inst cache prefetch",
         "Disable dynamic branch prediction",
-        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+        NULL, NULL, NULL, NULL,
+        "Disable P-states",
+        "Enable MCA on Data Poisoning",
+        "Enable vmsw instruction",
+        "Enable extern environmental notification",
         "Disable BINIT on processor time-out",
         "Disable dynamic power management (DPM)",
         "Disable coherency",
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index e2321536ee4c..dbb28164b19b 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -853,9 +853,8 @@ pfm_context_alloc(void)
          * allocate context descriptor 
          * must be able to free with interrupts disabled
          */
-        ctx = kmalloc(sizeof(pfm_context_t), GFP_KERNEL);
+        ctx = kzalloc(sizeof(pfm_context_t), GFP_KERNEL);
         if (ctx) {
-                memset(ctx, 0, sizeof(pfm_context_t));
                 DPRINT(("alloc ctx @%p\n", ctx));
         }
         return ctx;
diff --git a/arch/ia64/kernel/perfmon_montecito.h b/arch/ia64/kernel/perfmon_montecito.h
index cd06ac6a686c..7f8da4c7ca67 100644
--- a/arch/ia64/kernel/perfmon_montecito.h
+++ b/arch/ia64/kernel/perfmon_montecito.h
@@ -45,16 +45,16 @@ static pfm_reg_desc_t pfm_mont_pmc_desc[PMU_MAX_PMCS]={
 /* pmc29 */ { PFM_REG_NOTIMPL, },
 /* pmc30 */ { PFM_REG_NOTIMPL, },
 /* pmc31 */ { PFM_REG_NOTIMPL, },
-/* pmc32 */ { PFM_REG_CONFIG,  0, 0x30f01ffffffffff, 0x30f01ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
-/* pmc33 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
-/* pmc34 */ { PFM_REG_CONFIG,  0, 0xf01ffffffffff, 0xf01ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
-/* pmc35 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
+/* pmc32 */ { PFM_REG_CONFIG,  0, 0x30f01ffffffffffUL, 0x30f01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
+/* pmc33 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
+/* pmc34 */ { PFM_REG_CONFIG,  0, 0xf01ffffffffffUL, 0xf01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
+/* pmc35 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
 /* pmc36 */ { PFM_REG_CONFIG,  0, 0xfffffff0, 0xf, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
 /* pmc37 */ { PFM_REG_MONITOR, 4, 0x0, 0x3fff, NULL, pfm_mont_pmc_check, {RDEP_MONT_IEAR, 0, 0, 0}, {0, 0, 0, 0}},
 /* pmc38 */ { PFM_REG_CONFIG,  0, 0xdb6, 0x2492, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
 /* pmc39 */ { PFM_REG_MONITOR, 6, 0x0, 0xffcf, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
 /* pmc40 */ { PFM_REG_MONITOR, 6, 0x2000000, 0xf01cf, NULL, pfm_mont_pmc_check, {RDEP_MONT_DEAR,0, 0, 0}, {0,0, 0, 0}},
-/* pmc41 */ { PFM_REG_CONFIG,  0, 0x00002078fefefefe, 0x1e00018181818, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
+/* pmc41 */ { PFM_REG_CONFIG,  0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
 /* pmc42 */ { PFM_REG_MONITOR, 6, 0x0, 0x7ff4f, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
             { PFM_REG_END    , 0, 0x0, -1, NULL, NULL, {0,}, {0,}}, /* end marker */
 };
@@ -185,7 +185,7 @@ pfm_mont_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cn
         DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, tmpval, ctx->ctx_fl_using_dbreg, is_loaded));
 
         if (cnum == 41 && is_loaded 
-            && (tmpval & 0x1e00000000000) && (tmpval & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
+            && (tmpval & 0x1e00000000000UL) && (tmpval & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
 
                 DPRINT(("pmc[%d]=0x%lx has active pmc41 settings, clearing dbr\n", cnum, tmpval));
 
diff --git a/arch/ia64/kernel/relocate_kernel.S b/arch/ia64/kernel/relocate_kernel.S
new file mode 100644
index 000000000000..ae473e3f2a0d
--- /dev/null
+++ b/arch/ia64/kernel/relocate_kernel.S
@@ -0,0 +1,334 @@
+/*
+ * arch/ia64/kernel/relocate_kernel.S
+ *
+ * Relocate kexec'able kernel and start it
+ *
+ * Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
+ * Copyright (C) 2005 Khalid Aziz  <khalid.aziz@hp.com>
+ * Copyright (C) 2005 Intel Corp,  Zou Nan hai <nanhai.zou@intel.com>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+#include <asm/asmmacro.h>
+#include <asm/kregs.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/mca_asm.h>
+
+       /* Must be relocatable PIC code callable as a C function
+        */
+GLOBAL_ENTRY(relocate_new_kernel)
+        .prologue
+        alloc r31=ar.pfs,4,0,0,0
+        .body
+.reloc_entry:
+{
+        rsm psr.i| psr.ic
+        mov r2=ip
+}
+        ;;
+{
+        flushrs                         // must be first insn in group
+        srlz.i
+}
+        ;;
+        dep r2=0,r2,61,3                //to physical address
+        ;;
+        //first switch to physical mode
+        add r3=1f-.reloc_entry, r2
+        movl r16 = IA64_PSR_AC|IA64_PSR_BN|IA64_PSR_IC
+        mov ar.rsc=0                    // put RSE in enforced lazy mode
+        ;;
+        add sp=(memory_stack_end - 16 - .reloc_entry),r2
+        add r8=(register_stack - .reloc_entry),r2
+        ;;
+        mov r18=ar.rnat
+        mov ar.bspstore=r8
+        ;;
+        mov cr.ipsr=r16
+        mov cr.iip=r3
+        mov cr.ifs=r0
+        srlz.i
+        ;;
+        mov ar.rnat=r18
+        rfi
+        ;;
+1:
+        //physical mode code begin
+        mov b6=in1
+        dep r28=0,in2,61,3      //to physical address
+
+        // purge all TC entries
+#define O(member)       IA64_CPUINFO_##member##_OFFSET
+        GET_THIS_PADDR(r2, cpu_info)    // load phys addr of cpu_info into r2
+        ;;
+        addl r17=O(PTCE_STRIDE),r2
+        addl r2=O(PTCE_BASE),r2
+        ;;
+        ld8 r18=[r2],(O(PTCE_COUNT)-O(PTCE_BASE));;     // r18=ptce_base
+        ld4 r19=[r2],4                                  // r19=ptce_count[0]
+        ld4 r21=[r17],4                                 // r21=ptce_stride[0]
+        ;;
+        ld4 r20=[r2]                                    // r20=ptce_count[1]
+        ld4 r22=[r17]                                   // r22=ptce_stride[1]
+        mov r24=r0
+        ;;
+        adds r20=-1,r20
+        ;;
+#undef O
+2:
+        cmp.ltu p6,p7=r24,r19
+(p7)    br.cond.dpnt.few 4f
+        mov ar.lc=r20
+3:
+        ptc.e r18
+        ;;
+        add r18=r22,r18
+        br.cloop.sptk.few 3b
+        ;;
+        add r18=r21,r18
+        add r24=1,r24
+        ;;
+        br.sptk.few 2b
+4:
+        srlz.i
+        ;;
+        //purge TR entry for kernel text and data
+        movl r16=KERNEL_START
+        mov r18=KERNEL_TR_PAGE_SHIFT<<2
+        ;;
+        ptr.i r16, r18
+        ptr.d r16, r18
+        ;;
+        srlz.i
+        ;;
+
+        // purge TR entry for percpu data
+        movl r16=PERCPU_ADDR
+        mov r18=PERCPU_PAGE_SHIFT<<2
+        ;;
+        ptr.d r16,r18
+        ;;
+        srlz.d
+        ;;
+
+        // purge TR entry for pal code
+        mov r16=in3
+        mov r18=IA64_GRANULE_SHIFT<<2
+        ;;
+        ptr.i r16,r18
+        ;;
+        srlz.i
+        ;;
+
+        // purge TR entry for stack
+        mov r16=IA64_KR(CURRENT_STACK)
+        ;;
+        shl r16=r16,IA64_GRANULE_SHIFT
+        movl r19=PAGE_OFFSET
+        ;;
+        add r16=r19,r16
+        mov r18=IA64_GRANULE_SHIFT<<2
+        ;;
+        ptr.d r16,r18
+        ;;
+        srlz.i
+        ;;
+
+        //copy segments
+        movl r16=PAGE_MASK
+        mov  r30=in0                    // in0 is page_list
+        br.sptk.few .dest_page
+        ;;
+.loop:
+        ld8  r30=[in0], 8;;
+.dest_page:
+        tbit.z p0, p6=r30, 0;;          // 0x1 dest page
+(p6)    and r17=r30, r16
+(p6)    br.cond.sptk.few .loop;;
+
+        tbit.z p0, p6=r30, 1;;          // 0x2 indirect page
+(p6)    and in0=r30, r16
+(p6)    br.cond.sptk.few .loop;;
+
+        tbit.z p0, p6=r30, 2;;          // 0x4 end flag
+(p6)    br.cond.sptk.few .end_loop;;
+
+        tbit.z p6, p0=r30, 3;;          // 0x8 source page
+(p6)    br.cond.sptk.few .loop
+
+        and r18=r30, r16
+
+        // simple copy page, may optimize later
+        movl r14=PAGE_SIZE/8 - 1;;
+        mov ar.lc=r14;;
+1:
+        ld8 r14=[r18], 8;;
+        st8 [r17]=r14;;
+        fc.i r17
+        add r17=8, r17
+        br.ctop.sptk.few 1b
+        br.sptk.few .loop
+        ;;
+
+.end_loop:
+        sync.i                  // for fc.i
+        ;;
+        srlz.i
+        ;;
+        srlz.d
+        ;;
+        br.call.sptk.many b0=b6;;
+
+.align  32
+memory_stack:
+        .fill           8192, 1, 0
+memory_stack_end:
+register_stack:
+        .fill           8192, 1, 0
+register_stack_end:
+relocate_new_kernel_end:
+END(relocate_new_kernel)
+
+.global relocate_new_kernel_size
+relocate_new_kernel_size:
+        data8   relocate_new_kernel_end - relocate_new_kernel
+
+GLOBAL_ENTRY(ia64_dump_cpu_regs)
+        .prologue
+        alloc loc0=ar.pfs,1,2,0,0
+        .body
+        mov     ar.rsc=0                // put RSE in enforced lazy mode
+        add     loc1=4*8, in0           // save r4 and r5 first
+        ;;
+{
+        flushrs                         // flush dirty regs to backing store
+        srlz.i
+}
+        st8 [loc1]=r4, 8
+        ;;
+        st8 [loc1]=r5, 8
+        ;;
+        add loc1=32*8, in0
+        mov r4=ar.rnat
+        ;;
+        st8 [in0]=r0, 8                 // r0
+        st8 [loc1]=r4, 8                // rnat
+        mov r5=pr
+        ;;
+        st8 [in0]=r1, 8                 // r1
+        st8 [loc1]=r5, 8                // pr
+        mov r4=b0
+        ;;
+        st8 [in0]=r2, 8                 // r2
+        st8 [loc1]=r4, 8                // b0
+        mov r5=b1;
+        ;;
+        st8 [in0]=r3, 24                // r3
+        st8 [loc1]=r5, 8                // b1
+        mov r4=b2
+        ;;
+        st8 [in0]=r6, 8                 // r6
+        st8 [loc1]=r4, 8                // b2
+        mov r5=b3
+        ;;
+        st8 [in0]=r7, 8                 // r7
+        st8 [loc1]=r5, 8                // b3
+        mov r4=b4
+        ;;
+        st8 [in0]=r8, 8                 // r8
+        st8 [loc1]=r4, 8                // b4
+        mov r5=b5
+        ;;
+        st8 [in0]=r9, 8                 // r9
+        st8 [loc1]=r5, 8                // b5
+        mov r4=b6
+        ;;
+        st8 [in0]=r10, 8                // r10
+        st8 [loc1]=r5, 8                // b6
+        mov r5=b7
+        ;;
+        st8 [in0]=r11, 8                // r11
+        st8 [loc1]=r5, 8                // b7
+        mov r4=b0
+        ;;
+        st8 [in0]=r12, 8                // r12
+        st8 [loc1]=r4, 8                // ip
+        mov r5=loc0
+        ;;
+        st8 [in0]=r13, 8                // r13
+        extr.u r5=r5, 0, 38             // ar.pfs.pfm
+        mov r4=r0                       // user mask
+        ;;
+        st8 [in0]=r14, 8                // r14
+        st8 [loc1]=r5, 8                // cfm
+        ;;
+        st8 [in0]=r15, 8                // r15
+        st8 [loc1]=r4, 8                // user mask
+        mov r5=ar.rsc
+        ;;
+        st8 [in0]=r16, 8                // r16
+        st8 [loc1]=r5, 8                // ar.rsc
+        mov r4=ar.bsp
+        ;;
+        st8 [in0]=r17, 8                // r17
+        st8 [loc1]=r4, 8                // ar.bsp
+        mov r5=ar.bspstore
+        ;;
+        st8 [in0]=r18, 8                // r18
+        st8 [loc1]=r5, 8                // ar.bspstore
+        mov r4=ar.rnat
+        ;;
+        st8 [in0]=r19, 8                // r19
+        st8 [loc1]=r4, 8                // ar.rnat
+        mov r5=ar.ccv
+        ;;
+        st8 [in0]=r20, 8                // r20
+        st8 [loc1]=r5, 8                // ar.ccv
+        mov r4=ar.unat
+        ;;
+        st8 [in0]=r21, 8                // r21
+        st8 [loc1]=r4, 8                // ar.unat
+        mov r5 = ar.fpsr
+        ;;
+        st8 [in0]=r22, 8                // r22
+        st8 [loc1]=r5, 8                // ar.fpsr
+        mov r4 = ar.unat
+        ;;
+        st8 [in0]=r23, 8                // r23
+        st8 [loc1]=r4, 8                // unat
+        mov r5 = ar.fpsr
+        ;;
+        st8 [in0]=r24, 8                // r24
+        st8 [loc1]=r5, 8                // fpsr
+        mov r4 = ar.pfs
+        ;;
+        st8 [in0]=r25, 8                // r25
+        st8 [loc1]=r4, 8                // ar.pfs
+        mov r5 = ar.lc
+        ;;
+        st8 [in0]=r26, 8                // r26
+        st8 [loc1]=r5, 8                // ar.lc
+        mov r4 = ar.ec
+        ;;
+        st8 [in0]=r27, 8                // r27
+        st8 [loc1]=r4, 8                // ar.ec
+        mov r5 = ar.csd
+        ;;
+        st8 [in0]=r28, 8                // r28
+        st8 [loc1]=r5, 8                // ar.csd
+        mov r4 = ar.ssd
+        ;;
+        st8 [in0]=r29, 8                // r29
+        st8 [loc1]=r4, 8                // ar.ssd
+        ;;
+        st8 [in0]=r30, 8                // r30
+        ;;
+        st8 [in0]=r31, 8                // r31
+        mov ar.pfs=loc0
+        ;;
+        br.ret.sptk.many rp
+END(ia64_dump_cpu_regs)
+
+
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d10404a41756..14e1200376a9 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -43,6 +43,8 @@
 #include <linux/initrd.h>
 #include <linux/pm.h>
 #include <linux/cpufreq.h>
+#include <linux/kexec.h>
+#include <linux/crash_dump.h>
 
 #include <asm/ia32.h>
 #include <asm/machvec.h>
@@ -252,6 +254,41 @@ reserve_memory (void)
         efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
         n++;
 
+#ifdef CONFIG_KEXEC
+        /* crashkernel=size@offset specifies the size to reserve for a crash
+         * kernel.(offset is ingored for keep compatibility with other archs)
+         * By reserving this memory we guarantee that linux never set's it
+         * up as a DMA target.Useful for holding code to do something
+         * appropriate after a kernel panic.
+         */
+        {
+                char *from = strstr(saved_command_line, "crashkernel=");
+                unsigned long base, size;
+                if (from) {
+                        size = memparse(from + 12, &from);
+                        if (size) {
+                                sort_regions(rsvd_region, n);
+                                base = kdump_find_rsvd_region(size,
+                                rsvd_region, n);
+                                if (base != ~0UL) {
+                                        rsvd_region[n].start =
+                                                (unsigned long)__va(base);
+                                        rsvd_region[n].end =
+                                                (unsigned long)__va(base + size);
+                                        n++;
+                                        crashk_res.start = base;
+                                        crashk_res.end = base + size - 1;
+                                }
+                        }
+                }
+                efi_memmap_res.start = ia64_boot_param->efi_memmap;
+                efi_memmap_res.end = efi_memmap_res.start +
+                        ia64_boot_param->efi_memmap_size;
+                boot_param_res.start = __pa(ia64_boot_param);
+                boot_param_res.end = boot_param_res.start +
+                        sizeof(*ia64_boot_param);
+        }
+#endif
         /* end of memory marker */
         rsvd_region[n].start = ~0UL;
         rsvd_region[n].end   = ~0UL;
@@ -263,6 +300,7 @@ reserve_memory (void)
         sort_regions(rsvd_region, num_rsvd_regions);
 }
 
+
 /**
  * find_initrd - get initrd parameters from the boot parameter structure
  *
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 6ab95ceaf9d4..b1b9aa4364b9 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -30,6 +30,7 @@
 #include <linux/delay.h>
 #include <linux/efi.h>
 #include <linux/bitops.h>
+#include <linux/kexec.h>
 
 #include <asm/atomic.h>
 #include <asm/current.h>
@@ -66,6 +67,7 @@ static volatile struct call_data_struct *call_data;
 
 #define IPI_CALL_FUNC           0
 #define IPI_CPU_STOP            1
+#define IPI_KDUMP_CPU_STOP      3
 
 /* This needs to be cacheline aligned because it is written to by *other* CPUs.  */
 static DEFINE_PER_CPU(u64, ipi_operation) ____cacheline_aligned;
@@ -155,7 +157,11 @@ handle_IPI (int irq, void *dev_id)
                               case IPI_CPU_STOP:
                                 stop_this_cpu();
                                 break;
-
+#ifdef CONFIG_CRASH_DUMP
+                              case IPI_KDUMP_CPU_STOP:
+                                unw_init_running(kdump_cpu_freeze, NULL);
+                                break;
+#endif
                               default:
                                 printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which);
                                 break;
@@ -213,6 +219,26 @@ send_IPI_self (int op)
         send_IPI_single(smp_processor_id(), op);
 }
 
+#ifdef CONFIG_CRASH_DUMP
+void
+kdump_smp_send_stop()
+{
+        send_IPI_allbutself(IPI_KDUMP_CPU_STOP);
+}
+
+void
+kdump_smp_send_init()
+{
+        unsigned int cpu, self_cpu;
+        self_cpu = smp_processor_id();
+        for_each_online_cpu(cpu) {
+                if (cpu != self_cpu) {
+                        if(kdump_status[cpu] == 0)
+                                platform_send_ipi(cpu, 0, IA64_IPI_DM_INIT, 0);
+                }
+        }
+}
+#endif
 /*
  * Called with preeemption disabled.
  */
diff --git a/arch/ia64/lib/ip_fast_csum.S b/arch/ia64/lib/ip_fast_csum.S
index 19674ca2acfc..1f86aeb2c948 100644
--- a/arch/ia64/lib/ip_fast_csum.S
+++ b/arch/ia64/lib/ip_fast_csum.S
@@ -8,8 +8,8 @@
  *      in0: address of buffer to checksum (char *)
  *      in1: length of the buffer (int)
  *
- * Copyright (C) 2002 Intel Corp.
- * Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com>
+ * Copyright (C) 2002, 2006 Intel Corp.
+ * Copyright (C) 2002, 2006 Ken Chen <kenneth.w.chen@intel.com>
  */
 
 #include <asm/asmmacro.h>
@@ -25,6 +25,9 @@
 
 #define in0     r32
 #define in1     r33
+#define in2     r34
+#define in3     r35
+#define in4     r36
 #define ret0    r8
 
 GLOBAL_ENTRY(ip_fast_csum)
@@ -65,8 +68,9 @@ GLOBAL_ENTRY(ip_fast_csum)
         zxt2    r20=r20
         ;;
         add     r20=ret0,r20
+        mov     r9=0xffff
         ;;
-        andcm   ret0=-1,r20
+        andcm   ret0=r9,r20
         .restore sp             // reset frame state
         br.ret.sptk.many b0
         ;;
@@ -88,3 +92,51 @@ GLOBAL_ENTRY(ip_fast_csum)
         mov     b0=r34
         br.ret.sptk.many b0
 END(ip_fast_csum)
+
+GLOBAL_ENTRY(csum_ipv6_magic)
+        ld4     r20=[in0],4
+        ld4     r21=[in1],4
+        dep     r15=in3,in2,32,16
+        ;;
+        ld4     r22=[in0],4
+        ld4     r23=[in1],4
+        mux1    r15=r15,@rev
+        ;;
+        ld4     r24=[in0],4
+        ld4     r25=[in1],4
+        shr.u   r15=r15,16
+        add     r16=r20,r21
+        add     r17=r22,r23
+        ;;
+        ld4     r26=[in0],4
+        ld4     r27=[in1],4
+        add     r18=r24,r25
+        add     r8=r16,r17
+        ;;
+        add     r19=r26,r27
+        add     r8=r8,r18
+        ;;
+        add     r8=r8,r19
+        add     r15=r15,in4
+        ;;
+        add     r8=r8,r15
+        ;;
+        shr.u   r10=r8,32       // now fold sum into short
+        zxt4    r11=r8
+        ;;
+        add     r8=r10,r11
+        ;;
+        shr.u   r10=r8,16       // yeah, keep it rolling
+        zxt2    r11=r8
+        ;;
+        add     r8=r10,r11
+        ;;
+        shr.u   r10=r8,16       // three times lucky
+        zxt2    r11=r8
+        ;;
+        add     r8=r10,r11
+        mov     r9=0xffff
+        ;;
+        andcm   r8=r9,r8
+        br.ret.sptk.many b0
+END(csum_ipv6_magic)
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index eb92cef9cd0d..474d179966dc 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -125,11 +125,10 @@ alloc_pci_controller (int seg)
 {
         struct pci_controller *controller;
 
-        controller = kmalloc(sizeof(*controller), GFP_KERNEL);
+        controller = kzalloc(sizeof(*controller), GFP_KERNEL);
         if (!controller)
                 return NULL;
 
-        memset(controller, 0, sizeof(*controller));
         controller->segment = seg;
         controller->node = -1;
         return controller;
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 0b49459a878a..8c5bee01eaa2 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -117,7 +117,10 @@ struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
                                        nasid_t nasid, int slice)
 {
         int vector;
+        int cpuid;
+#ifdef CONFIG_SMP
         int cpuphys;
+#endif
         int64_t bridge;
         int local_widget, status;
         nasid_t local_nasid;
@@ -146,7 +149,6 @@ struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
         vector = sn_irq_info->irq_irq;
         /* Free the old PROM new_irq_info structure */
         sn_intr_free(local_nasid, local_widget, new_irq_info);
-        /* Update kernels new_irq_info with new target info */
         unregister_intr_pda(new_irq_info);
 
         /* allocate a new PROM new_irq_info struct */
@@ -160,8 +162,10 @@ struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
                 return NULL;
         }
 
-        cpuphys = nasid_slice_to_cpuid(nasid, slice);
-        new_irq_info->irq_cpuid = cpuphys;
+        /* Update kernels new_irq_info with new target info */
+        cpuid = nasid_slice_to_cpuid(new_irq_info->irq_nasid,
+                                     new_irq_info->irq_slice);
+        new_irq_info->irq_cpuid = cpuid;
         register_intr_pda(new_irq_info);
 
         pci_provider = sn_pci_provider[new_irq_info->irq_bridge_type];
@@ -180,6 +184,7 @@ struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
         call_rcu(&sn_irq_info->rcu, sn_irq_info_free);
 
 #ifdef CONFIG_SMP
+        cpuphys = cpu_physical_id(cpuid);
         set_irq_affinity_info((vector & 0xff), cpuphys, 0);
 #endif
 
@@ -299,6 +304,9 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
         nasid_t nasid = sn_irq_info->irq_nasid;
         int slice = sn_irq_info->irq_slice;
         int cpu = nasid_slice_to_cpuid(nasid, slice);
+#ifdef CONFIG_SMP
+        int cpuphys;
+#endif
 
         pci_dev_get(pci_dev);
         sn_irq_info->irq_cpuid = cpu;
@@ -311,6 +319,10 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
         spin_unlock(&sn_irq_info_lock);
 
         register_intr_pda(sn_irq_info);
+#ifdef CONFIG_SMP
+        cpuphys = cpu_physical_id(cpu);
+        set_irq_affinity_info(sn_irq_info->irq_irq, cpuphys, 0);
+#endif
 }
 
 void sn_irq_unfixup(struct pci_dev *pci_dev)
diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c
index 6ffd1f850d41..b3a435fd70fb 100644
--- a/arch/ia64/sn/kernel/msi_sn.c
+++ b/arch/ia64/sn/kernel/msi_sn.c
@@ -136,10 +136,6 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev)
          */
         msg.data = 0x100 + irq;
 
-#ifdef CONFIG_SMP
-        set_irq_affinity_info(irq, sn_irq_info->irq_cpuid, 0);
-#endif
-
         write_msi_msg(irq, &msg);
         set_irq_chip_and_handler(irq, &sn_msi_chip, handle_edge_irq);
 
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 1d009f93244d..a934ad069425 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -769,5 +769,13 @@ int sn_prom_feature_available(int id)
                 return 0;
         return test_bit(id, sn_prom_features);
 }
+
+void
+sn_kernel_launch_event(void)
+{
+        /* ignore status until we understand possible failure, if any*/
+        if (ia64_sn_kernel_launch_event())
+                printk(KERN_ERR "KEXEC is not supported in this PROM, Please update the PROM.\n");
+}
 EXPORT_SYMBOL(sn_prom_feature_available);
 
diff --git a/include/asm-ia64/checksum.h b/include/asm-ia64/checksum.h
index bd40f4756ce1..2b78582cbd61 100644
--- a/include/asm-ia64/checksum.h
+++ b/include/asm-ia64/checksum.h
@@ -70,4 +70,10 @@ static inline __sum16 csum_fold(__wsum csum)
         return (__force __sum16)~sum;
 }
 
+#define _HAVE_ARCH_IPV6_CSUM    1
+struct in6_addr;
+extern unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
+        struct in6_addr *daddr, __u32 len, unsigned short proto,
+        unsigned int csum);
+
 #endif /* _ASM_IA64_CHECKSUM_H */
diff --git a/include/asm-ia64/kexec.h b/include/asm-ia64/kexec.h
new file mode 100644
index 000000000000..01c36b004747
--- /dev/null
+++ b/include/asm-ia64/kexec.h
@@ -0,0 +1,47 @@
+#ifndef _ASM_IA64_KEXEC_H
+#define _ASM_IA64_KEXEC_H
+
+
+/* Maximum physical address we can use pages from */
+#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
+/* Maximum address we can reach in physical address mode */
+#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
+/* Maximum address we can use for the control code buffer */
+#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
+
+#define KEXEC_CONTROL_CODE_SIZE (8192 + 8192 + 4096)
+
+/* The native architecture */
+#define KEXEC_ARCH KEXEC_ARCH_IA_64
+
+#define MAX_NOTE_BYTES 1024
+
+#define kexec_flush_icache_page(page) do { \
+                unsigned long page_addr = (unsigned long)page_address(page); \
+                flush_icache_range(page_addr, page_addr + PAGE_SIZE); \
+        } while(0)
+
+extern struct kimage *ia64_kimage;
+DECLARE_PER_CPU(u64, ia64_mca_pal_base);
+const extern unsigned int relocate_new_kernel_size;
+extern void relocate_new_kernel(unsigned long, unsigned long,
+                struct ia64_boot_param *, unsigned long);
+static inline void
+crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs)
+{
+}
+extern struct resource efi_memmap_res;
+extern struct resource boot_param_res;
+extern void kdump_smp_send_stop(void);
+extern void kdump_smp_send_init(void);
+extern void kexec_disable_iosapic(void);
+extern void crash_save_this_cpu(void);
+struct rsvd_region;
+extern unsigned long kdump_find_rsvd_region(unsigned long size,
+                struct rsvd_region *rsvd_regions, int n);
+extern void kdump_cpu_freeze(struct unw_frame_info *info, void *arg);
+extern int kdump_status[];
+extern atomic_t kdump_cpu_freezed;
+extern atomic_t kdump_in_progress;
+
+#endif /* _ASM_IA64_KEXEC_H */
diff --git a/include/asm-ia64/machvec.h b/include/asm-ia64/machvec.h
index 8f784f8e45b0..a3891eb3f217 100644
--- a/include/asm-ia64/machvec.h
+++ b/include/asm-ia64/machvec.h
@@ -37,6 +37,7 @@ typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
                                         u8 size);
 typedef void ia64_mv_migrate_t(struct task_struct * task);
 typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
+typedef void ia64_mv_kernel_launch_event_t(void);
 
 /* DMA-mapping interface: */
 typedef void ia64_mv_dma_init (void);
@@ -218,6 +219,7 @@ struct ia64_machine_vector {
         ia64_mv_setup_msi_irq_t *setup_msi_irq;
         ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
         ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
+        ia64_mv_kernel_launch_event_t *kernel_launch_event;
 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 
 #define MACHVEC_INIT(name)                      \
@@ -318,6 +320,9 @@ extern ia64_mv_dma_supported		swiotlb_dma_supported;
 #ifndef platform_tlb_migrate_finish
 # define platform_tlb_migrate_finish    machvec_noop_mm
 #endif
+#ifndef platform_kernel_launch_event
+# define platform_kernel_launch_event   machvec_noop
+#endif
 #ifndef platform_dma_init
 # define platform_dma_init              swiotlb_init
 #endif
diff --git a/include/asm-ia64/machvec_sn2.h b/include/asm-ia64/machvec_sn2.h
index 83325f6db03e..eaa2fce0fecd 100644
--- a/include/asm-ia64/machvec_sn2.h
+++ b/include/asm-ia64/machvec_sn2.h
@@ -67,6 +67,7 @@ extern ia64_mv_dma_sync_sg_for_device	sn_dma_sync_sg_for_device;
 extern ia64_mv_dma_mapping_error        sn_dma_mapping_error;
 extern ia64_mv_dma_supported            sn_dma_supported;
 extern ia64_mv_migrate_t                sn_migrate;
+extern ia64_mv_kernel_launch_event_t    sn_kernel_launch_event;
 extern ia64_mv_setup_msi_irq_t          sn_setup_msi_irq;
 extern ia64_mv_teardown_msi_irq_t       sn_teardown_msi_irq;
 extern ia64_mv_pci_fixup_bus_t          sn_pci_fixup_bus;
@@ -121,6 +122,7 @@ extern ia64_mv_pci_fixup_bus_t		sn_pci_fixup_bus;
 #define platform_dma_mapping_error              sn_dma_mapping_error
 #define platform_dma_supported          sn_dma_supported
 #define platform_migrate                sn_migrate
+#define platform_kernel_launch_event    sn_kernel_launch_event
 #ifdef CONFIG_PCI_MSI
 #define platform_setup_msi_irq          sn_setup_msi_irq
 #define platform_teardown_msi_irq       sn_teardown_msi_irq
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index c3b1f862e6e7..c8df75901083 100644
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -15,11 +15,12 @@
  *      - initrd (optional)
  *      - command line string
  *      - kernel code & data
+ *      - crash dumping code reserved region
  *      - Kernel memory map built from EFI memory map
  *
  * More could be added if necessary
  */
-#define IA64_MAX_RSVD_REGIONS 6
+#define IA64_MAX_RSVD_REGIONS 7
 
 struct rsvd_region {
         unsigned long start;    /* virtual address of beginning of element */
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h
index 947cb72b520e..485759ba9e36 100644
--- a/include/asm-ia64/page.h
+++ b/include/asm-ia64/page.h
@@ -101,7 +101,7 @@ do {						\
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 extern int ia64_pfn_valid (unsigned long pfn);
-#elif defined(CONFIG_FLATMEM)
+#else
 # define ia64_pfn_valid(pfn) 1
 #endif
 
@@ -110,12 +110,11 @@ extern struct page *vmem_map;
 #ifdef CONFIG_DISCONTIGMEM
 # define page_to_pfn(page)      ((unsigned long) (page - vmem_map))
 # define pfn_to_page(pfn)       (vmem_map + (pfn))
+#else
+# include <asm-generic/memory_model.h>
 #endif
-#endif
-
-#if defined(CONFIG_FLATMEM) || defined(CONFIG_SPARSEMEM)
-/* FLATMEM always configures mem_map (mem_map = vmem_map if necessary) */
-#include <asm-generic/memory_model.h>
+#else
+# include <asm-generic/memory_model.h>
 #endif
 
 #ifdef CONFIG_FLATMEM
diff --git a/include/asm-ia64/pal.h b/include/asm-ia64/pal.h
index 4283ddcc25fb..bc768153f3c9 100644
--- a/include/asm-ia64/pal.h
+++ b/include/asm-ia64/pal.h
@@ -20,6 +20,8 @@
  * 00/05/24     eranian Updated to latest PAL spec, fix structures bugs, added
  * 00/05/25     eranian Support for stack calls, and static physical calls
  * 00/06/18     eranian Support for stacked physical calls
+ * 06/10/26     rja     Support for Intel Itanium Architecture Software Developer's
+ *                      Manual Rev 2.2 (Jan 2006)
  */
 
 /*
@@ -69,6 +71,8 @@
 #define PAL_PREFETCH_VISIBILITY 41      /* Make Processor Prefetches Visible */
 #define PAL_LOGICAL_TO_PHYSICAL 42      /* returns information on logical to physical processor mapping */
 #define PAL_CACHE_SHARED_INFO   43      /* returns information on caches shared by logical processor */
+#define PAL_GET_HW_POLICY       48      /* Get current hardware resource sharing policy */
+#define PAL_SET_HW_POLICY       49      /* Set current hardware resource sharing policy */
 
 #define PAL_COPY_PAL            256     /* relocate PAL procedures and PAL PMI */
 #define PAL_HALT_INFO           257     /* return the low power capabilities of processor */
@@ -80,6 +84,11 @@
 #define PAL_SET_PSTATE          263     /* set the P-state */
 #define PAL_BRAND_INFO          274     /* Processor branding information */
 
+#define PAL_GET_PSTATE_TYPE_LASTSET     0
+#define PAL_GET_PSTATE_TYPE_AVGANDRESET 1
+#define PAL_GET_PSTATE_TYPE_AVGNORESET  2
+#define PAL_GET_PSTATE_TYPE_INSTANT     3
+
 #ifndef __ASSEMBLY__
 
 #include <linux/types.h>
@@ -102,6 +111,7 @@ typedef s64				pal_status_t;
                                                  * cache without sideeffects
                                                  * and "restrict" was 1
                                                  */
+#define PAL_STATUS_REQUIRES_MEMORY      (-9)    /* Call requires PAL memory buffer */
 
 /* Processor cache level in the heirarchy */
 typedef u64                             pal_cache_level_t;
@@ -456,7 +466,9 @@ typedef struct pal_process_state_info_s {
                                                  * by the processor
                                                  */
 
-                        reserved2       : 11,
+                        se              : 1,    /* Shared error.  MCA in a
+                                                   shared structure */
+                        reserved2       : 10,
                         cc              : 1,    /* Cache check */
                         tc              : 1,    /* TLB check */
                         bc              : 1,    /* Bus check */
@@ -487,10 +499,12 @@ typedef struct pal_cache_check_info_s {
                                                  * error occurred
                                                  */
                         wiv             : 1,    /* Way field valid */
-                        reserved2       : 10,
+                        reserved2       : 1,
+                        dp              : 1,    /* Data poisoned on MBE */
+                        reserved3       : 8,
 
                         index           : 20,   /* Cache line index */
-                        reserved3       : 2,
+                        reserved4       : 2,
 
                         is              : 1,    /* instruction set (1 == ia32) */
                         iv              : 1,    /* instruction set field valid */
@@ -557,7 +571,7 @@ typedef struct pal_bus_check_info_s {
                         type            : 8,    /* Bus xaction type*/
                         sev             : 5,    /* Bus error severity*/
                         hier            : 2,    /* Bus hierarchy level */
-                        reserved1       : 1,
+                        dp              : 1,    /* Data poisoned on MBE */
                         bsi             : 8,    /* Bus error status
                                                  * info
                                                  */
@@ -834,7 +848,9 @@ typedef union pal_bus_features_u {
                 u64     pbf_req_bus_parking                     :       1;
                 u64     pbf_bus_lock_mask                       :       1;
                 u64     pbf_enable_half_xfer_rate               :       1;
-                u64     pbf_reserved2                           :       22;
+                u64     pbf_reserved2                           :       20;
+                u64     pbf_enable_shared_line_replace          :       1;
+                u64     pbf_enable_exclusive_line_replace       :       1;
                 u64     pbf_disable_xaction_queueing            :       1;
                 u64     pbf_disable_resp_err_check              :       1;
                 u64     pbf_disable_berr_check                  :       1;
@@ -1077,6 +1093,24 @@ ia64_pal_freq_ratios (struct pal_freq_ratio *proc_ratio, struct pal_freq_ratio *
         return iprv.status;
 }
 
+/*
+ * Get the current hardware resource sharing policy of the processor
+ */
+static inline s64
+ia64_pal_get_hw_policy (u64 proc_num, u64 *cur_policy, u64 *num_impacted,
+                        u64 *la)
+{
+        struct ia64_pal_retval iprv;
+        PAL_CALL(iprv, PAL_GET_HW_POLICY, proc_num, 0, 0);
+        if (cur_policy)
+                *cur_policy = iprv.v0;
+        if (num_impacted)
+                *num_impacted = iprv.v1;
+        if (la)
+                *la = iprv.v2;
+        return iprv.status;
+}
+
 /* Make the processor enter HALT or one of the implementation dependent low
  * power states where prefetching and execution are suspended and cache and
  * TLB coherency is not maintained.
@@ -1112,10 +1146,10 @@ ia64_pal_halt_info (pal_power_mgmt_info_u_t *power_buf)
 
 /* Get the current P-state information */
 static inline s64
-ia64_pal_get_pstate (u64 *pstate_index)
+ia64_pal_get_pstate (u64 *pstate_index, unsigned long type)
 {
         struct ia64_pal_retval iprv;
-        PAL_CALL_STK(iprv, PAL_GET_PSTATE, 0, 0, 0);
+        PAL_CALL_STK(iprv, PAL_GET_PSTATE, type, 0, 0);
         *pstate_index = iprv.v0;
         return iprv.status;
 }
@@ -1401,6 +1435,17 @@ ia64_pal_rse_info (u64 *num_phys_stacked, pal_hints_u_t *hints)
         return iprv.status;
 }
 
+/*
+ * Set the current hardware resource sharing policy of the processor
+ */
+static inline s64
+ia64_pal_set_hw_policy (u64 policy)
+{
+        struct ia64_pal_retval iprv;
+        PAL_CALL(iprv, PAL_SET_HW_POLICY, policy, 0, 0);
+        return iprv.status;
+}
+
 /* Cause the processor to enter SHUTDOWN state, where prefetching and execution are
  * suspended, but cause cache and TLB coherency to be maintained.
  * This is usually called in IA-32 mode.
@@ -1524,12 +1569,15 @@ typedef union pal_vm_info_1_u {
         } pal_vm_info_1_s;
 } pal_vm_info_1_u_t;
 
+#define PAL_MAX_PURGES          0xFFFF          /* all ones is means unlimited */
+
 typedef union pal_vm_info_2_u {
         u64                     pvi2_val;
         struct {
                 u64             impl_va_msb     : 8,
                                 rid_size        : 8,
-                                reserved        : 48;
+                                max_purges      : 16,
+                                reserved        : 32;
         } pal_vm_info_2_s;
 } pal_vm_info_2_u_t;
 
diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index be5d83ad7cb1..2c4004eb5a68 100644
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -88,6 +88,8 @@
 #define  SN_SAL_INJECT_ERROR                       0x02000067
 #define  SN_SAL_SET_CPU_NUMBER                     0x02000068
 
+#define  SN_SAL_KERNEL_LAUNCH_EVENT                0x02000069
+
 /*
  * Service-specific constants
  */
@@ -1155,4 +1157,11 @@ ia64_sn_set_cpu_number(int cpu)
         SAL_CALL_NOLOCK(rv, SN_SAL_SET_CPU_NUMBER, cpu, 0, 0, 0, 0, 0, 0);
         return rv.status;
 }
+static inline int
+ia64_sn_kernel_launch_event(void)
+{
+        struct ia64_sal_retval rv;
+        SAL_CALL_NOLOCK(rv, SN_SAL_KERNEL_LAUNCH_EVENT, 0, 0, 0, 0, 0, 0, 0);
+        return rv.status;
+}
 #endif /* _ASM_IA64_SN_SN_SAL_H */
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index e3abcec6c51c..d02425cdd801 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -109,6 +109,10 @@ void crash_save_cpu(struct pt_regs *regs, int cpu);
 extern struct kimage *kexec_image;
 extern struct kimage *kexec_crash_image;
 
+#ifndef kexec_flush_icache_page
+#define kexec_flush_icache_page(page)
+#endif
+
 #define KEXEC_ON_CRASH  0x00000001
 #define KEXEC_ARCH_MASK 0xffff0000
 
@@ -134,6 +138,7 @@ extern struct resource crashk_res;
 typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
 extern note_buf_t *crash_notes;
 
+
 #else /* !CONFIG_KEXEC */
 struct pt_regs;
 struct task_struct;
diff --git a/kernel/kexec.c b/kernel/kexec.c
index afbbbe981be2..2a59c8a01ae0 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -852,6 +852,7 @@ static int kimage_load_crash_segment(struct kimage *image,
                         memset(ptr + uchunk, 0, mchunk - uchunk);
                 }
                 result = copy_from_user(ptr, buf, uchunk);
+                kexec_flush_icache_page(page);
                 kunmap(page);
                 if (result) {
                         result = (result < 0) ? result : -EIO;