Merge tag 'please-pull-misc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 fixes from Tony Luck:
 "Bundle of miscellaneous ia64 fixes for 3.10 merge window."

* tag 'please-pull-misc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  Add size restriction to the kdump documentation
  Fix example error_injection_tool
  Fix build error for numa_clear_node() under IA64
  Fix initialization of CMCI/CMCP interrupts
  Change "select DMAR" to "select INTEL_IOMMU"
  Wrong asm register contraints in the kvm implementation
  Wrong asm register contraints in the futex implementation
  Remove cast for kmalloc return value
  Fix kexec oops when iosapic was removed
  iosapic: fix a minor typo in comments
  Add WB/UC check for early_ioremap
  Fix broken fsys_getppid()
  tiocx: check retval from bus_register()

5 files changed, 66 insertions, 64 deletions

diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
index c4cd45d97749..abc6dee3799c 100644
--- a/arch/ia64/kernel/fsys.S
+++ b/arch/ia64/kernel/fsys.S
@@ -90,53 +90,6 @@ ENTRY(fsys_getpid)
         FSYS_RETURN
 END(fsys_getpid)
 
-ENTRY(fsys_getppid)
-        .prologue
-        .altrp b6
-        .body
-        add r17=IA64_TASK_GROUP_LEADER_OFFSET,r16
-        ;;
-        ld8 r17=[r17]                           // r17 = current->group_leader
-        add r9=TI_FLAGS+IA64_TASK_SIZE,r16
-        ;;
-
-        ld4 r9=[r9]
-        add r17=IA64_TASK_REAL_PARENT_OFFSET,r17 // r17 = &current->group_leader->real_parent
-        ;;
-        and r9=TIF_ALLWORK_MASK,r9
-
-1:      ld8 r18=[r17]                           // r18 = current->group_leader->real_parent
-        ;;
-        cmp.ne p8,p0=0,r9
-        add r8=IA64_TASK_TGID_OFFSET,r18        // r8 = &current->group_leader->real_parent->tgid
-        ;;
-
-        /*
-         * The .acq is needed to ensure that the read of tgid has returned its data before
-         * we re-check "real_parent".
-         */
-        ld4.acq r8=[r8]                         // r8 = current->group_leader->real_parent->tgid
-#ifdef CONFIG_SMP
-        /*
-         * Re-read current->group_leader->real_parent.
-         */
-        ld8 r19=[r17]                           // r19 = current->group_leader->real_parent
-(p8)    br.spnt.many fsys_fallback_syscall
-        ;;
-        cmp.ne p6,p0=r18,r19                    // did real_parent change?
-        mov r19=0                       // i must not leak kernel bits...
-(p6)    br.cond.spnt.few 1b                     // yes -> redo the read of tgid and the check
-        ;;
-        mov r17=0                       // i must not leak kernel bits...
-        mov r18=0                       // i must not leak kernel bits...
-#else
-        mov r17=0                       // i must not leak kernel bits...
-        mov r18=0                       // i must not leak kernel bits...
-        mov r19=0                       // i must not leak kernel bits...
-#endif
-        FSYS_RETURN
-END(fsys_getppid)
-
 ENTRY(fsys_set_tid_address)
         .prologue
         .altrp b6
@@ -614,7 +567,7 @@ paravirt_fsyscall_table:
         data8 0                         // chown
         data8 0                         // lseek                // 1040
         data8 fsys_getpid               // getpid
-        data8 fsys_getppid              // getppid
+        data8 0                         // getppid
         data8 0                         // mount
         data8 0                         // umount
         data8 0                         // setuid               // 1045
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index ee33c3aaa2fc..19f107be734e 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -76,7 +76,7 @@
  *      PCI pin -> global system interrupt (GSI) -> IA-64 vector <-> IRQ
  *
  * Note: The term "IRQ" is loosely used everywhere in Linux kernel to
- * describeinterrupts.  Now we use "IRQ" only for Linux IRQ's.  ISA IRQ
+ * describe interrupts.  Now we use "IRQ" only for Linux IRQ's.  ISA IRQ
  * (isa_irq) is the only exception in this source code.
  */
 
@@ -1010,6 +1010,26 @@ iosapic_check_gsi_range (unsigned int gsi_base, unsigned int ver)
         return 0;
 }
 
+static int
+iosapic_delete_rte(unsigned int irq, unsigned int gsi)
+{
+        struct iosapic_rte_info *rte, *temp;
+
+        list_for_each_entry_safe(rte, temp, &iosapic_intr_info[irq].rtes,
+                                                                rte_list) {
+                if (rte->iosapic->gsi_base + rte->rte_index == gsi) {
+                        if (rte->refcnt)
+                                return -EBUSY;
+
+                        list_del(&rte->rte_list);
+                        kfree(rte);
+                        return 0;
+                }
+        }
+
+        return -EINVAL;
+}
+
 int iosapic_init(unsigned long phys_addr, unsigned int gsi_base)
 {
         int num_rte, err, index;
@@ -1069,7 +1089,7 @@ int iosapic_init(unsigned long phys_addr, unsigned int gsi_base)
 
 int iosapic_remove(unsigned int gsi_base)
 {
-        int index, err = 0;
+        int i, irq, index, err = 0;
         unsigned long flags;
 
         spin_lock_irqsave(&iosapic_lock, flags);
@@ -1087,6 +1107,16 @@ int iosapic_remove(unsigned int gsi_base)
                 goto out;
         }
 
+        for (i = gsi_base; i < gsi_base + iosapic_lists[index].num_rte; i++) {
+                irq = __gsi_to_irq(i);
+                if (irq < 0)
+                        continue;
+
+                err = iosapic_delete_rte(irq, i);
+                if (err)
+                        goto out;
+        }
+
         iounmap(iosapic_lists[index].addr);
         iosapic_free(index);
  out:
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index ad69606613eb..f2c418281130 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -23,6 +23,8 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 
+#include <asm/mca.h>
+
 /*
  * 'what should we do if we get a hw irq event on an illegal vector'.
  * each architecture has to answer this themselves.
@@ -83,6 +85,12 @@ bool is_affinity_mask_valid(const struct cpumask *cpumask)
 
 #endif /* CONFIG_SMP */
 
+int __init arch_early_irq_init(void)
+{
+        ia64_mca_irq_init();
+        return 0;
+}
+
 #ifdef CONFIG_HOTPLUG_CPU
 unsigned int vectors_in_migration[NR_IRQS];
 
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 65bf9cd39044..d7396dbb07bb 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -2074,22 +2074,16 @@ ia64_mca_init(void)
         printk(KERN_INFO "MCA related initialization done\n");
 }
 
+
 /*
- * ia64_mca_late_init
- *
- *      Opportunity to setup things that require initialization later
- *      than ia64_mca_init.  Setup a timer to poll for CPEs if the
- *      platform doesn't support an interrupt driven mechanism.
- *
- *  Inputs  :   None
- *  Outputs :   Status
+ * These pieces cannot be done in ia64_mca_init() because it is called before
+ * early_irq_init() which would wipe out our percpu irq registrations. But we
+ * cannot leave them until ia64_mca_late_init() because by then all the other
+ * processors have been brought online and have set their own CMC vectors to
+ * point at a non-existant action. Called from arch_early_irq_init().
  */
-static int __init
-ia64_mca_late_init(void)
+void __init ia64_mca_irq_init(void)
 {
-        if (!mca_init)
-                return 0;
-
         /*
          *  Configure the CMCI/P vector and handler. Interrupts for CMC are
          *  per-processor, so AP CMC interrupts are setup in smp_callin() (smpboot.c).
@@ -2108,6 +2102,23 @@ ia64_mca_late_init(void)
         /* Setup the CPEI/P handler */
         register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
 #endif
+}
+
+/*
+ * ia64_mca_late_init
+ *
+ *      Opportunity to setup things that require initialization later
+ *      than ia64_mca_init.  Setup a timer to poll for CPEs if the
+ *      platform doesn't support an interrupt driven mechanism.
+ *
+ *  Inputs  :   None
+ *  Outputs :   Status
+ */
+static int __init
+ia64_mca_late_init(void)
+{
+        if (!mca_init)
+                return 0;
 
         register_hotcpu_notifier(&mca_cpu_notifier);
 
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 9392e021c93b..94f8bf777afa 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -349,7 +349,7 @@ init_record_index_pools(void)
 
         /* - 3 - */
         slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1;
-        slidx_pool.buffer = (slidx_list_t *)
+        slidx_pool.buffer =
                 kmalloc(slidx_pool.max_idx * sizeof(slidx_list_t), GFP_KERNEL);
 
         return slidx_pool.buffer ? 0 : -ENOMEM;