11 files changed, 48 insertions, 64 deletions

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index cc5d7ac5b2e7..22c8675c79f4 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2009,7 +2009,7 @@ static void ack_edge_ioapic_vector(unsigned int vector)
 {
         int irq = vector_to_irq(vector);
 
-        move_irq(vector);
+        move_native_irq(vector);
         ack_edge_ioapic_irq(irq);
 }
 
@@ -2024,7 +2024,7 @@ static void end_level_ioapic_vector (unsigned int vector)
 {
         int irq = vector_to_irq(vector);
 
-        move_irq(vector);
+        move_native_irq(vector);
         end_level_ioapic_irq(irq);
 }
 
diff --git a/arch/i386/kernel/reboot.c b/arch/i386/kernel/reboot.c
index 350ea6680f63..2afe0f8d555a 100644
--- a/arch/i386/kernel/reboot.c
+++ b/arch/i386/kernel/reboot.c
@@ -111,6 +111,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2400"),
                 },
         },
+        {       /* Handle problems with rebooting on HP nc6120 */
+                .callback = set_bios_reboot,
+                .ident = "HP Compaq nc6120",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6120"),
+                },
+        },
         { }
 };
 
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index 01572814abe4..5db9d3bcbbcb 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -42,6 +42,7 @@ EXPORT_SYMBOL(clear_page);
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 #include <linux/bootmem.h>
+EXPORT_SYMBOL(min_low_pfn);     /* defined by bootmem.c, but not exported by generic code */
 EXPORT_SYMBOL(max_low_pfn);     /* defined by bootmem.c, but not exported by generic code */
 #endif
 
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 801eeaeaf3de..2895d6e6062f 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -740,7 +740,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
         switch(val) {
         case DIE_BREAK:
                 /* err is break number from ia64_bad_break() */
-                if (args->err == 0x80200 || args->err == 0x80300)
+                if (args->err == 0x80200 || args->err == 0x80300 || args->err == 0)
                         if (pre_kprobes_handler(args))
                                 ret = NOTIFY_STOP;
                 break;
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index fba5fdd1f968..d3e0ecb56d62 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -132,24 +132,6 @@ __kprobes ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
         siginfo_t siginfo;
         int sig, code;
 
-        /* break.b always sets cr.iim to 0, which causes problems for
-         * debuggers.  Get the real break number from the original instruction,
-         * but only for kernel code.  User space break.b is left alone, to
-         * preserve the existing behaviour.  All break codings have the same
-         * format, so there is no need to check the slot type.
-         */
-        if (break_num == 0 && !user_mode(regs)) {
-                struct ia64_psr *ipsr = ia64_psr(regs);
-                unsigned long *bundle = (unsigned long *)regs->cr_iip;
-                unsigned long slot;
-                switch (ipsr->ri) {
-                      case 0:  slot = (bundle[0] >>  5); break;
-                      case 1:  slot = (bundle[0] >> 46) | (bundle[1] << 18); break;
-                      default: slot = (bundle[1] >> 23); break;
-                }
-                break_num = ((slot >> 36 & 1) << 20) | (slot >> 6 & 0xfffff);
-        }
-
         /* SIGILL, SIGFPE, SIGSEGV, and SIGBUS want these field initialized: */
         siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
         siginfo.si_imm = break_num;
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index af4d1bc9a2eb..94db25708456 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -163,15 +163,13 @@ EXPORT_SYMBOL(giveup_altivec);
 EXPORT_SYMBOL(giveup_spe);
 #endif /* CONFIG_SPE */
 
-#ifdef CONFIG_PPC64
-EXPORT_SYMBOL(__flush_icache_range);
-#else
+#ifndef CONFIG_PPC64
 EXPORT_SYMBOL(flush_instruction_cache);
-EXPORT_SYMBOL(flush_icache_range);
 EXPORT_SYMBOL(flush_tlb_kernel_range);
 EXPORT_SYMBOL(flush_tlb_page);
 EXPORT_SYMBOL(_tlbie);
 #endif
+EXPORT_SYMBOL(__flush_icache_range);
 EXPORT_SYMBOL(flush_dcache_range);
 
 #ifdef CONFIG_SMP
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a5a7542a8ff3..105d5609ff57 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -201,6 +201,28 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
 }
 #endif /* CONFIG_SPE */
 
+/*
+ * If we are doing lazy switching of CPU state (FP, altivec or SPE),
+ * and the current task has some state, discard it.
+ */
+static inline void discard_lazy_cpu_state(void)
+{
+#ifndef CONFIG_SMP
+        preempt_disable();
+        if (last_task_used_math == current)
+                last_task_used_math = NULL;
+#ifdef CONFIG_ALTIVEC
+        if (last_task_used_altivec == current)
+                last_task_used_altivec = NULL;
+#endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_SPE
+        if (last_task_used_spe == current)
+                last_task_used_spe = NULL;
+#endif
+        preempt_enable();
+#endif /* CONFIG_SMP */
+}
+
 int set_dabr(unsigned long dabr)
 {
         if (ppc_md.set_dabr)
@@ -434,19 +456,7 @@ void show_regs(struct pt_regs * regs)
 void exit_thread(void)
 {
         kprobe_flush_task(current);
-
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
 }
 
 void flush_thread(void)
@@ -458,18 +468,7 @@ void flush_thread(void)
                 t->flags ^= (_TIF_ABI_PENDING | _TIF_32BIT);
 #endif
 
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
 
 #ifdef CONFIG_PPC64     /* for now */
         if (current->thread.dabr) {
@@ -635,18 +634,7 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
         }
 #endif
 
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
         memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
         current->thread.fpscr.val = 0;
 #ifdef CONFIG_ALTIVEC
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 4ce0105c308e..bcdc209dca85 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -265,7 +265,7 @@ static int __init call_prom_ret(const char *service, int nargs, int nret,
         va_end(list);
 
         for (i = 0; i < nret; i++)
-                rets[nargs+i] = 0;
+                args.args[nargs+i] = 0;
 
         if (enter_prom(&args, RELOC(prom_entry)) < 0)
                 return PROM_ERROR;
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 66073f775193..bb6a5c6a64be 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -184,7 +184,7 @@ EXPORT_SYMBOL(kernel_thread);
 
 EXPORT_SYMBOL(flush_instruction_cache);
 EXPORT_SYMBOL(giveup_fpu);
-EXPORT_SYMBOL(flush_icache_range);
+EXPORT_SYMBOL(__flush_icache_range);
 EXPORT_SYMBOL(flush_dcache_range);
 EXPORT_SYMBOL(flush_icache_user_range);
 EXPORT_SYMBOL(flush_dcache_page);
diff --git a/arch/ppc/kernel/process.c b/arch/ppc/kernel/process.c
index cb1c7b92f8c6..25cbdc8d2941 100644
--- a/arch/ppc/kernel/process.c
+++ b/arch/ppc/kernel/process.c
@@ -417,6 +417,7 @@ void show_regs(struct pt_regs * regs)
 
 void exit_thread(void)
 {
+        preempt_disable();
         if (last_task_used_math == current)
                 last_task_used_math = NULL;
         if (last_task_used_altivec == current)
@@ -425,10 +426,12 @@ void exit_thread(void)
         if (last_task_used_spe == current)
                 last_task_used_spe = NULL;
 #endif
+        preempt_enable();
 }
 
 void flush_thread(void)
 {
+        preempt_disable();
         if (last_task_used_math == current)
                 last_task_used_math = NULL;
         if (last_task_used_altivec == current)
@@ -437,6 +440,7 @@ void flush_thread(void)
         if (last_task_used_spe == current)
                 last_task_used_spe = NULL;
 #endif
+        preempt_enable();
 }
 
 void
@@ -535,6 +539,7 @@ void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp)
         regs->nip = nip;
         regs->gpr[1] = sp;
         regs->msr = MSR_USER;
+        preempt_disable();
         if (last_task_used_math == current)
                 last_task_used_math = NULL;
         if (last_task_used_altivec == current)
@@ -543,6 +548,7 @@ void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp)
         if (last_task_used_spe == current)
                 last_task_used_spe = NULL;
 #endif
+        preempt_enable();
         memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
         current->thread.fpscr.val = 0;
 #ifdef CONFIG_ALTIVEC
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index d9396c1721cd..580b63da836b 100644
--- a/arch/sparc64/mm/generic.c
+++ b/arch/sparc64/mm/generic.c
@@ -77,6 +77,7 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte,
                         BUG_ON(!pte_none(*pte));
                         set_pte_at(mm, address, pte, entry);
                         address += PAGE_SIZE;
+                        pte_val(entry) += PAGE_SIZE;
                         pte++;
                 } while (address < curend);
         } while (address < end);