8 files changed, 89 insertions, 26 deletions

diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 5006a1d9f5d0..18c51df9fe06 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1627,3 +1627,23 @@ ENTRY(sys_setns_wrapper)
         lgfr    %r2,%r2                 # int
         lgfr    %r3,%r3                 # int
         jg      sys_setns
+
+ENTRY(compat_sys_process_vm_readv_wrapper)
+        lgfr    %r2,%r2                 # compat_pid_t
+        llgtr   %r3,%r3                 # struct compat_iovec __user *
+        llgfr   %r4,%r4                 # unsigned long
+        llgtr   %r5,%r5                 # struct compat_iovec __user *
+        llgfr   %r6,%r6                 # unsigned long
+        llgf    %r0,164(%r15)           # unsigned long
+        stg     %r0,160(%r15)
+        jg      sys_process_vm_readv
+
+ENTRY(compat_sys_process_vm_writev_wrapper)
+        lgfr    %r2,%r2                 # compat_pid_t
+        llgtr   %r3,%r3                 # struct compat_iovec __user *
+        llgfr   %r4,%r4                 # unsigned long
+        llgtr   %r5,%r5                 # struct compat_iovec __user *
+        llgfr   %r6,%r6                 # unsigned long
+        llgf    %r0,164(%r15)           # unsigned long
+        stg     %r0,160(%r15)
+        jg      sys_process_vm_writev
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 37394b3413e2..c9ffe0025197 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -390,6 +390,8 @@ static __init void detect_machine_facilities(void)
                 S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS;
         if (test_facility(40))
                 S390_lowcore.machine_flags |= MACHINE_FLAG_SPP;
+        if (test_facility(25))
+                S390_lowcore.machine_flags |= MACHINE_FLAG_STCKF;
 #endif
 }
 
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 450931a45b68..573bc29551ef 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -296,13 +296,6 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
                      ((data & PSW_MASK_EA) && !(data & PSW_MASK_BA))))
                         /* Invalid psw mask. */
                         return -EINVAL;
-                if (addr == (addr_t) &dummy->regs.psw.addr)
-                        /*
-                         * The debugger changed the instruction address,
-                         * reset system call restart, see signal.c:do_signal
-                         */
-                        task_thread_info(child)->system_call = 0;
-
                 *(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr) = data;
 
         } else if (addr < (addr_t) (&dummy->regs.orig_gpr2)) {
@@ -614,11 +607,6 @@ static int __poke_user_compat(struct task_struct *child,
                         /* Transfer 31 bit amode bit to psw mask. */
                         regs->psw.mask = (regs->psw.mask & ~PSW_MASK_BA) |
                                 (__u64)(tmp & PSW32_ADDR_AMODE);
-                        /*
-                         * The debugger changed the instruction address,
-                         * reset system call restart, see signal.c:do_signal
-                         */
-                        task_thread_info(child)->system_call = 0;
                 } else {
                         /* gpr 0-15 */
                         *(__u32*)((addr_t) &regs->psw + addr*2 + 4) = tmp;
@@ -905,6 +893,14 @@ static int s390_last_break_get(struct task_struct *target,
         return 0;
 }
 
+static int s390_last_break_set(struct task_struct *target,
+                               const struct user_regset *regset,
+                               unsigned int pos, unsigned int count,
+                               const void *kbuf, const void __user *ubuf)
+{
+        return 0;
+}
+
 #endif
 
 static int s390_system_call_get(struct task_struct *target,
@@ -951,6 +947,7 @@ static const struct user_regset s390_regsets[] = {
                 .size = sizeof(long),
                 .align = sizeof(long),
                 .get = s390_last_break_get,
+                .set = s390_last_break_set,
         },
 #endif
         [REGSET_SYSTEM_CALL] = {
@@ -1116,6 +1113,14 @@ static int s390_compat_last_break_get(struct task_struct *target,
         return 0;
 }
 
+static int s390_compat_last_break_set(struct task_struct *target,
+                                      const struct user_regset *regset,
+                                      unsigned int pos, unsigned int count,
+                                      const void *kbuf, const void __user *ubuf)
+{
+        return 0;
+}
+
 static const struct user_regset s390_compat_regsets[] = {
         [REGSET_GENERAL] = {
                 .core_note_type = NT_PRSTATUS,
@@ -1139,6 +1144,7 @@ static const struct user_regset s390_compat_regsets[] = {
                 .size = sizeof(long),
                 .align = sizeof(long),
                 .get = s390_compat_last_break_get,
+                .set = s390_compat_last_break_set,
         },
         [REGSET_SYSTEM_CALL] = {
                 .core_note_type = NT_S390_SYSTEM_CALL,
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 8ac6bfa2786c..e54c4ff8abaa 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -211,6 +211,8 @@ static void __init setup_zfcpdump(unsigned int console_devno)
 
         if (ipl_info.type != IPL_TYPE_FCP_DUMP)
                 return;
+        if (OLDMEM_BASE)
+                return;
         if (console_devno != -1)
                 sprintf(str, " cio_ignore=all,!0.0.%04x,!0.0.%04x",
                         ipl_info.data.fcp.dev_id.devno, console_devno);
@@ -482,7 +484,7 @@ static void __init setup_memory_end(void)
 
 
 #ifdef CONFIG_ZFCPDUMP
-        if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
+        if (ipl_info.type == IPL_TYPE_FCP_DUMP && !OLDMEM_BASE) {
                 memory_end = ZFCPDUMP_HSA_SIZE;
                 memory_end_set = 1;
         }
@@ -577,7 +579,7 @@ static unsigned long __init find_crash_base(unsigned long crash_size,
                 *msg = "first memory chunk must be at least crashkernel size";
                 return 0;
         }
-        if (is_kdump_kernel() && (crash_size == OLDMEM_SIZE))
+        if (OLDMEM_BASE && crash_size == OLDMEM_SIZE)
                 return OLDMEM_BASE;
 
         for (i = MEMORY_CHUNKS - 1; i >= 0; i--) {
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 05a85bc14c98..7f6f9f354545 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -460,9 +460,9 @@ void do_signal(struct pt_regs *regs)
                                                      regs->svc_code >> 16);
                                 break;
                         }
-                        /* No longer in a system call */
-                        clear_thread_flag(TIF_SYSCALL);
                 }
+                /* No longer in a system call */
+                clear_thread_flag(TIF_SYSCALL);
 
                 if ((is_compat_task() ?
                      handle_signal32(signr, &ka, &info, oldset, regs) :
@@ -486,6 +486,7 @@ void do_signal(struct pt_regs *regs)
         }
 
         /* No handlers present - check for system call restart */
+        clear_thread_flag(TIF_SYSCALL);
         if (current_thread_info()->system_call) {
                 regs->svc_code = current_thread_info()->system_call;
                 switch (regs->gprs[2]) {
@@ -500,9 +501,6 @@ void do_signal(struct pt_regs *regs)
                         regs->gprs[2] = regs->orig_gpr2;
                         set_thread_flag(TIF_SYSCALL);
                         break;
-                default:
-                        clear_thread_flag(TIF_SYSCALL);
-                        break;
                 }
         }
 
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 73eb08c874fb..bcab2f04ba58 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -348,3 +348,5 @@ SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at
 SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime_wrapper)
 SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
 SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
+SYSCALL(sys_process_vm_readv,sys_process_vm_readv,compat_sys_process_vm_readv_wrapper) /* 340 */
+SYSCALL(sys_process_vm_writev,sys_process_vm_writev,compat_sys_process_vm_writev_wrapper)
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 6dfc524c31aa..6e0e29b29a7b 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -68,8 +68,10 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
         return mask;
 }
 
-static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
-                             struct mask_info *book, struct mask_info *core)
+static struct mask_info *add_cpus_to_mask(struct topology_cpu *tl_cpu,
+                                          struct mask_info *book,
+                                          struct mask_info *core,
+                                          int z10)
 {
         unsigned int cpu;
 
@@ -88,10 +90,16 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
                         cpu_book_id[lcpu] = book->id;
 #endif
                         cpumask_set_cpu(lcpu, &core->mask);
-                        cpu_core_id[lcpu] = core->id;
+                        if (z10) {
+                                cpu_core_id[lcpu] = rcpu;
+                                core = core->next;
+                        } else {
+                                cpu_core_id[lcpu] = core->id;
+                        }
                         smp_cpu_polarization[lcpu] = tl_cpu->pp;
                 }
         }
+        return core;
 }
 
 static void clear_masks(void)
@@ -123,18 +131,41 @@ static void tl_to_cores(struct sysinfo_15_1_x *info)
 {
 #ifdef CONFIG_SCHED_BOOK
         struct mask_info *book = &book_info;
+        struct cpuid cpu_id;
 #else
         struct mask_info *book = NULL;
 #endif
         struct mask_info *core = &core_info;
         union topology_entry *tle, *end;
+        int z10 = 0;
 
-
+#ifdef CONFIG_SCHED_BOOK
+        get_cpu_id(&cpu_id);
+        z10 = cpu_id.machine == 0x2097 || cpu_id.machine == 0x2098;
+#endif
         spin_lock_irq(&topology_lock);
         clear_masks();
         tle = info->tle;
         end = (union topology_entry *)((unsigned long)info + info->length);
         while (tle < end) {
+#ifdef CONFIG_SCHED_BOOK
+                if (z10) {
+                        switch (tle->nl) {
+                        case 1:
+                                book = book->next;
+                                book->id = tle->container.id;
+                                break;
+                        case 0:
+                                core = add_cpus_to_mask(&tle->cpu, book, core, z10);
+                                break;
+                        default:
+                                clear_masks();
+                                goto out;
+                        }
+                        tle = next_tle(tle);
+                        continue;
+                }
+#endif
                 switch (tle->nl) {
 #ifdef CONFIG_SCHED_BOOK
                 case 2:
@@ -147,7 +178,7 @@ static void tl_to_cores(struct sysinfo_15_1_x *info)
                         core->id = tle->container.id;
                         break;
                 case 0:
-                        add_cpus_to_mask(&tle->cpu, book, core);
+                        add_cpus_to_mask(&tle->cpu, book, core, z10);
                         break;
                 default:
                         clear_masks();
@@ -328,8 +359,8 @@ void __init s390_init_cpu_topology(void)
         for (i = 0; i < TOPOLOGY_NR_MAG; i++)
                 printk(" %d", info->mag[i]);
         printk(" / %d\n", info->mnest);
-        alloc_masks(info, &core_info, 2);
+        alloc_masks(info, &core_info, 1);
 #ifdef CONFIG_SCHED_BOOK
-        alloc_masks(info, &book_info, 3);
+        alloc_masks(info, &book_info, 2);
 #endif
 }
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 56fe6bc81fee..e4c79ebb40e6 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -43,6 +43,8 @@ SECTIONS
 
         NOTES :text :note
 
+        .dummy : { *(.dummy) } :data
+
         RODATA
 
 #ifdef CONFIG_SHARED_KERNEL