6 files changed, 44 insertions, 30 deletions

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 21f61b8c445b..cc29c0f5300d 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -338,7 +338,8 @@ static void __init mpc85xx_mds_pic_init(void)
         }
 
         mpic = mpic_alloc(np, r.start,
-                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
+                        MPIC_BROKEN_FRR_NIRQS,
                         0, 256, " OpenPIC  ");
         BUG_ON(mpic == NULL);
         of_node_put(np);
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index 04160a4cc699..a15f582300d8 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -46,6 +46,7 @@ smp_85xx_kick_cpu(int nr)
         __iomem u32 *bptr_vaddr;
         struct device_node *np;
         int n = 0;
+        int ioremappable;
 
         WARN_ON (nr < 0 || nr >= NR_CPUS);
 
@@ -59,21 +60,37 @@ smp_85xx_kick_cpu(int nr)
                 return;
         }
 
+        /*
+         * A secondary core could be in a spinloop in the bootpage
+         * (0xfffff000), somewhere in highmem, or somewhere in lowmem.
+         * The bootpage and highmem can be accessed via ioremap(), but
+         * we need to directly access the spinloop if its in lowmem.
+         */
+        ioremappable = *cpu_rel_addr > virt_to_phys(high_memory);
+
         /* Map the spin table */
-        bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
+        if (ioremappable)
+                bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
+        else
+                bptr_vaddr = phys_to_virt(*cpu_rel_addr);
 
         local_irq_save(flags);
 
         out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr);
         out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
 
+        if (!ioremappable)
+                flush_dcache_range((ulong)bptr_vaddr,
+                                (ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
+
         /* Wait a bit for the CPU to ack. */
         while ((__secondary_hold_acknowledge != nr) && (++n < 1000))
                 mdelay(1);
 
         local_irq_restore(flags);
 
-        iounmap(bptr_vaddr);
+        if (ioremappable)
+                iounmap(bptr_vaddr);
 
         pr_debug("waited %d msecs for CPU #%d.\n", n, nr);
 }
diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
index c4d4a19235e0..eea120229cdb 100644
--- a/arch/powerpc/platforms/cell/spufs/coredump.c
+++ b/arch/powerpc/platforms/cell/spufs/coredump.c
@@ -54,7 +54,7 @@ static ssize_t do_coredump_read(int num, struct spu_context *ctx, void *buffer,
  */
 static int spufs_dump_write(struct file *file, const void *addr, int nr, loff_t *foffset)
 {
-        unsigned long limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
+        unsigned long limit = rlimit(RLIMIT_CORE);
         ssize_t written;
 
         if (*foffset + nr > limit)
diff --git a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
index 657b72f68493..2aa8b5631beb 100644
--- a/arch/powerpc/platforms/iseries/vio.c
+++ b/arch/powerpc/platforms/iseries/vio.c
@@ -474,6 +474,8 @@ static void __init get_viotape_info(struct device_node *vio_root)
         struct vio_waitevent we;
         int ret;
 
+        init_completion(&we.com);
+
         ret = viopath_open(viopath_hostLp, viomajorsubtype_tape, 2);
         if (ret) {
                 printk(KERN_WARNING "get_viotape_info: "
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 67b7a10f9fce..37bce52526da 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -236,7 +236,9 @@ static struct device_node *derive_parent(const char *path)
 
 int dlpar_attach_node(struct device_node *dn)
 {
+#ifdef CONFIG_PROC_DEVICETREE
         struct proc_dir_entry *ent;
+#endif
         int rc;
 
         of_node_set_flag(dn, OF_DYNAMIC);
@@ -267,10 +269,10 @@ int dlpar_attach_node(struct device_node *dn)
 
 int dlpar_detach_node(struct device_node *dn)
 {
+#ifdef CONFIG_PROC_DEVICETREE
         struct device_node *parent = dn->parent;
         struct property *prop = dn->properties;
 
-#ifdef CONFIG_PROC_DEVICETREE
         while (prop) {
                 remove_proc_entry(prop->name, dn->pde);
                 prop = prop->next;
@@ -344,20 +346,6 @@ int dlpar_release_drc(u32 drc_index)
 
 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
 
-static DEFINE_MUTEX(pseries_cpu_hotplug_mutex);
-
-void cpu_hotplug_driver_lock(void)
-__acquires(pseries_cpu_hotplug_mutex)
-{
-        mutex_lock(&pseries_cpu_hotplug_mutex);
-}
-
-void cpu_hotplug_driver_unlock(void)
-__releases(pseries_cpu_hotplug_mutex)
-{
-        mutex_unlock(&pseries_cpu_hotplug_mutex);
-}
-
 static int dlpar_online_cpu(struct device_node *dn)
 {
         int rc = 0;
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index b9b9e11609ec..f5f79196721c 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -163,14 +163,13 @@ static inline void lpar_qirr_info(int n_cpu , u8 value)
 /* Interface to generic irq subsystem */
 
 #ifdef CONFIG_SMP
-static int get_irq_server(unsigned int virq, unsigned int strict_check)
+static int get_irq_server(unsigned int virq, cpumask_t cpumask,
+                          unsigned int strict_check)
 {
         int server;
         /* For the moment only implement delivery to all cpus or one cpu */
-        cpumask_t cpumask;
         cpumask_t tmp = CPU_MASK_NONE;
 
-        cpumask_copy(&cpumask, irq_to_desc(virq)->affinity);
         if (!distribute_irqs)
                 return default_server;
 
@@ -192,10 +191,7 @@ static int get_irq_server(unsigned int virq, unsigned int strict_check)
         return default_server;
 }
 #else
-static int get_irq_server(unsigned int virq, unsigned int strict_check)
-{
-        return default_server;
-}
+#define get_irq_server(virq, cpumask, strict_check) (default_server)
 #endif
 
 static void xics_unmask_irq(unsigned int virq)
@@ -211,7 +207,7 @@ static void xics_unmask_irq(unsigned int virq)
         if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
                 return;
 
-        server = get_irq_server(virq, 0);
+        server = get_irq_server(virq, *(irq_to_desc(virq)->affinity), 0);
 
         call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
                                 DEFAULT_PRIORITY);
@@ -405,7 +401,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
          * For the moment only implement delivery to all cpus or one cpu.
          * Get current irq_server for the given irq
          */
-        irq_server = get_irq_server(virq, 1);
+        irq_server = get_irq_server(virq, *cpumask, 1);
         if (irq_server == -1) {
                 char cpulist[128];
                 cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
@@ -788,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr)
 {
         struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
 
-        BUG_ON(os_cppr->index != 0);
+        /*
+         * we only really want to set the priority when there's
+         * just one cppr value on the stack
+         */
+        WARN_ON(os_cppr->index != 0);
 
-        os_cppr->stack[os_cppr->index] = cppr;
+        os_cppr->stack[0] = cppr;
 
         if (firmware_has_feature(FW_FEATURE_LPAR))
                 lpar_cppr_info(cppr);
@@ -825,8 +825,14 @@ void xics_setup_cpu(void)
 
 void xics_teardown_cpu(void)
 {
+        struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
         int cpu = smp_processor_id();
 
+        /*
+         * we have to reset the cppr index to 0 because we're
+         * not going to return from the IPI
+         */
+        os_cppr->index = 0;
         xics_set_cpu_priority(0);
 
         /* Clear any pending IPI request */