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-rw-r--r--arch/s390/kernel/compat_linux.c110
-rw-r--r--arch/s390/kernel/compat_linux.h5
-rw-r--r--arch/s390/kernel/compat_ptrace.h1
-rw-r--r--arch/s390/kernel/compat_wrapper.S51
-rw-r--r--arch/s390/kernel/entry.S50
-rw-r--r--arch/s390/kernel/entry64.S42
-rw-r--r--arch/s390/kernel/ipl.c5
-rw-r--r--arch/s390/kernel/kprobes.c12
-rw-r--r--arch/s390/kernel/mem_detect.c23
-rw-r--r--arch/s390/kernel/process.c6
-rw-r--r--arch/s390/kernel/ptrace.c89
-rw-r--r--arch/s390/kernel/setup.c4
-rw-r--r--arch/s390/kernel/signal.c13
-rw-r--r--arch/s390/kernel/smp.c40
-rw-r--r--arch/s390/kernel/syscalls.S12
-rw-r--r--arch/s390/kernel/time.c41
-rw-r--r--arch/s390/kernel/topology.c14
-rw-r--r--arch/s390/kernel/vmlinux.lds.S2
18 files changed, 271 insertions, 249 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index d7f22226fc4..4646382af34 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -279,22 +279,6 @@ asmlinkage long sys32_getegid16(void)
return high2lowgid(current->egid);
}
-/* 32-bit timeval and related flotsam. */
-
-static inline long get_tv32(struct timeval *o, struct compat_timeval __user *i)
-{
- return (!access_ok(VERIFY_READ, o, sizeof(*o)) ||
- (__get_user(o->tv_sec, &i->tv_sec) ||
- __get_user(o->tv_usec, &i->tv_usec)));
-}
-
-static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
-{
- return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
- (__put_user(i->tv_sec, &o->tv_sec) ||
- __put_user(i->tv_usec, &o->tv_usec)));
-}
-
/*
* sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.
*
@@ -362,41 +346,6 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned
return sys_ftruncate(fd, (high << 32) | low);
}
-int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
-{
- compat_ino_t ino;
- int err;
-
- if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
- return -EOVERFLOW;
-
- ino = stat->ino;
- if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
- return -EOVERFLOW;
-
- err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
- err |= put_user(stat->ino, &statbuf->st_ino);
- err |= put_user(stat->mode, &statbuf->st_mode);
- err |= put_user(stat->nlink, &statbuf->st_nlink);
- err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
- err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
- err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
- err |= put_user(stat->size, &statbuf->st_size);
- err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
- err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
- err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
- err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
- err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
- err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
- err |= put_user(stat->blksize, &statbuf->st_blksize);
- err |= put_user(stat->blocks, &statbuf->st_blocks);
-/* fixme
- err |= put_user(0, &statbuf->__unused4[0]);
- err |= put_user(0, &statbuf->__unused4[1]);
-*/
- return err;
-}
-
asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
struct compat_timespec __user *interval)
{
@@ -557,65 +506,6 @@ sys32_delete_module(const char __user *name_user, unsigned int flags)
#endif /* CONFIG_MODULES */
-/* Translations due to time_t size differences. Which affects all
- sorts of things, like timeval and itimerval. */
-
-extern struct timezone sys_tz;
-
-asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
-{
- if (tv) {
- struct timeval ktv;
- do_gettimeofday(&ktv);
- if (put_tv32(tv, &ktv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
- return -EFAULT;
- }
- return 0;
-}
-
-static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
-{
- long usec;
-
- if (!access_ok(VERIFY_READ, i, sizeof(*i)))
- return -EFAULT;
- if (__get_user(o->tv_sec, &i->tv_sec))
- return -EFAULT;
- if (__get_user(usec, &i->tv_usec))
- return -EFAULT;
- o->tv_nsec = usec * 1000;
- return 0;
-}
-
-asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
-{
- struct timespec kts;
- struct timezone ktz;
-
- if (tv) {
- if (get_ts32(&kts, tv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_from_user(&ktz, tz, sizeof(ktz)))
- return -EFAULT;
- }
-
- return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
-}
-
-/* These are here just in case some old sparc32 binary calls it. */
-asmlinkage long sys32_pause(void)
-{
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- return -ERESTARTNOHAND;
-}
-
asmlinkage long sys32_pread64(unsigned int fd, char __user *ubuf,
size_t count, u32 poshi, u32 poslo)
{
diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h
index 20723a06201..836a2884290 100644
--- a/arch/s390/kernel/compat_linux.h
+++ b/arch/s390/kernel/compat_linux.h
@@ -202,11 +202,6 @@ long sys32_execve(void);
long sys32_init_module(void __user *umod, unsigned long len,
const char __user *uargs);
long sys32_delete_module(const char __user *name_user, unsigned int flags);
-long sys32_gettimeofday(struct compat_timeval __user *tv,
- struct timezone __user *tz);
-long sys32_settimeofday(struct compat_timeval __user *tv,
- struct timezone __user *tz);
-long sys32_pause(void);
long sys32_pread64(unsigned int fd, char __user *ubuf, size_t count,
u32 poshi, u32 poslo);
long sys32_pwrite64(unsigned int fd, const char __user *ubuf,
diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
index cde81fa64f8..a2be3a978d5 100644
--- a/arch/s390/kernel/compat_ptrace.h
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -42,6 +42,7 @@ struct user_regs_struct32
u32 gprs[NUM_GPRS];
u32 acrs[NUM_ACRS];
u32 orig_gpr2;
+ /* nb: there's a 4-byte hole here */
s390_fp_regs fp_regs;
/*
* These per registers are in here so that gdb can modify them
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index d003a6e16af..fc2c97197a5 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -128,8 +128,6 @@ sys32_alarm_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_alarm # branch to system call
-#sys32_pause_wrapper # void
-
.globl compat_sys_utime_wrapper
compat_sys_utime_wrapper:
llgtr %r2,%r2 # char *
@@ -334,17 +332,17 @@ compat_sys_getrusage_wrapper:
llgtr %r3,%r3 # struct rusage_emu31 *
jg compat_sys_getrusage # branch to system call
- .globl sys32_gettimeofday_wrapper
-sys32_gettimeofday_wrapper:
+ .globl compat_sys_gettimeofday_wrapper
+compat_sys_gettimeofday_wrapper:
llgtr %r2,%r2 # struct timeval_emu31 *
llgtr %r3,%r3 # struct timezone *
- jg sys32_gettimeofday # branch to system call
+ jg compat_sys_gettimeofday # branch to system call
- .globl sys32_settimeofday_wrapper
-sys32_settimeofday_wrapper:
+ .globl compat_sys_settimeofday_wrapper
+compat_sys_settimeofday_wrapper:
llgtr %r2,%r2 # struct timeval_emu31 *
llgtr %r3,%r3 # struct timezone *
- jg sys32_settimeofday # branch to system call
+ jg compat_sys_settimeofday # branch to system call
.globl sys32_getgroups16_wrapper
sys32_getgroups16_wrapper:
@@ -1732,3 +1730,40 @@ compat_sys_timerfd_gettime_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct compat_itimerspec *
jg compat_sys_timerfd_gettime
+
+ .globl compat_sys_signalfd4_wrapper
+compat_sys_signalfd4_wrapper:
+ lgfr %r2,%r2 # int
+ llgtr %r3,%r3 # compat_sigset_t *
+ llgfr %r4,%r4 # compat_size_t
+ lgfr %r5,%r5 # int
+ jg compat_sys_signalfd4
+
+ .globl sys_eventfd2_wrapper
+sys_eventfd2_wrapper:
+ llgfr %r2,%r2 # unsigned int
+ lgfr %r3,%r3 # int
+ jg sys_eventfd2
+
+ .globl sys_inotify_init1_wrapper
+sys_inotify_init1_wrapper:
+ lgfr %r2,%r2 # int
+ jg sys_inotify_init1
+
+ .globl sys_pipe2_wrapper
+sys_pipe2_wrapper:
+ llgtr %r2,%r2 # u32 *
+ lgfr %r3,%r3 # int
+ jg sys_pipe2 # branch to system call
+
+ .globl sys_dup3_wrapper
+sys_dup3_wrapper:
+ llgfr %r2,%r2 # unsigned int
+ llgfr %r3,%r3 # unsigned int
+ lgfr %r4,%r4 # int
+ jg sys_dup3 # branch to system call
+
+ .globl sys_epoll_create1_wrapper
+sys_epoll_create1_wrapper:
+ lgfr %r2,%r2 # int
+ jg sys_epoll_create1 # branch to system call
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 708cf9cf9a3..ed500ef799b 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -49,9 +49,9 @@ SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
-_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )
-_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING)
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
@@ -318,6 +318,8 @@ sysc_work:
bo BASED(sysc_reschedule)
tm __TI_flags+3(%r9),_TIF_SIGPENDING
bnz BASED(sysc_sigpending)
+ tm __TI_flags+3(%r9),_TIF_NOTIFY_RESUME
+ bnz BASED(sysc_notify_resume)
tm __TI_flags+3(%r9),_TIF_RESTART_SVC
bo BASED(sysc_restart)
tm __TI_flags+3(%r9),_TIF_SINGLE_STEP
@@ -356,6 +358,16 @@ sysc_sigpending:
b BASED(sysc_work_loop)
#
+# _TIF_NOTIFY_RESUME is set, call do_notify_resume
+#
+sysc_notify_resume:
+ la %r2,SP_PTREGS(%r15) # load pt_regs
+ l %r1,BASED(.Ldo_notify_resume)
+ la %r14,BASED(sysc_work_loop)
+ br %r1 # call do_notify_resume
+
+
+#
# _TIF_RESTART_SVC is set, set up registers and restart svc
#
sysc_restart:
@@ -378,20 +390,21 @@ sysc_singlestep:
br %r1 # branch to do_single_step
#
-# call trace before and after sys_call
+# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
+# and after the system call
#
sysc_tracesys:
- l %r1,BASED(.Ltrace)
+ l %r1,BASED(.Ltrace_entry)
la %r2,SP_PTREGS(%r15) # load pt_regs
la %r3,0
srl %r7,2
st %r7,SP_R2(%r15)
basr %r14,%r1
- clc SP_R2(4,%r15),BASED(.Lnr_syscalls)
+ cl %r2,BASED(.Lnr_syscalls)
bnl BASED(sysc_tracenogo)
l %r8,BASED(.Lsysc_table)
- l %r7,SP_R2(%r15) # strace might have changed the
- sll %r7,2 # system call
+ lr %r7,%r2
+ sll %r7,2 # *4
l %r8,0(%r7,%r8)
sysc_tracego:
lm %r3,%r6,SP_R3(%r15)
@@ -401,9 +414,8 @@ sysc_tracego:
sysc_tracenogo:
tm __TI_flags+3(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
bz BASED(sysc_return)
- l %r1,BASED(.Ltrace)
+ l %r1,BASED(.Ltrace_exit)
la %r2,SP_PTREGS(%r15) # load pt_regs
- la %r3,1
la %r14,BASED(sysc_return)
br %r1
@@ -666,6 +678,8 @@ io_work_loop:
bo BASED(io_reschedule)
tm __TI_flags+3(%r9),_TIF_SIGPENDING
bnz BASED(io_sigpending)
+ tm __TI_flags+3(%r9),_TIF_NOTIFY_RESUME
+ bnz BASED(io_notify_resume)
b BASED(io_restore)
io_work_done:
@@ -704,6 +718,19 @@ io_sigpending:
TRACE_IRQS_OFF
b BASED(io_work_loop)
+#
+# _TIF_SIGPENDING is set, call do_signal
+#
+io_notify_resume:
+ TRACE_IRQS_ON
+ stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
+ la %r2,SP_PTREGS(%r15) # load pt_regs
+ l %r1,BASED(.Ldo_notify_resume)
+ basr %r14,%r1 # call do_signal
+ stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
+ TRACE_IRQS_OFF
+ b BASED(io_work_loop)
+
/*
* External interrupt handler routine
*/
@@ -1070,6 +1097,8 @@ cleanup_io_leave_insn:
.Ldo_IRQ: .long do_IRQ
.Ldo_extint: .long do_extint
.Ldo_signal: .long do_signal
+.Ldo_notify_resume:
+ .long do_notify_resume
.Lhandle_per: .long do_single_step
.Ldo_execve: .long do_execve
.Lexecve_tail: .long execve_tail
@@ -1079,7 +1108,8 @@ cleanup_io_leave_insn:
.Lpreempt_schedule_irq:
.long preempt_schedule_irq
#endif
-.Ltrace: .long syscall_trace
+.Ltrace_entry: .long do_syscall_trace_enter
+.Ltrace_exit: .long do_syscall_trace_exit
.Lschedtail: .long schedule_tail
.Lsysc_table: .long sys_call_table
#ifdef CONFIG_TRACE_IRQFLAGS
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index fee10177dbf..d7ce150453f 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -52,9 +52,9 @@ SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
STACK_SIZE = 1 << STACK_SHIFT
-_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )
-_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING)
#define BASED(name) name-system_call(%r13)
@@ -310,6 +310,8 @@ sysc_work:
jo sysc_reschedule
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jnz sysc_sigpending
+ tm __TI_flags+7(%r9),_TIF_NOTIFY_RESUME
+ jnz sysc_notify_resume
tm __TI_flags+7(%r9),_TIF_RESTART_SVC
jo sysc_restart
tm __TI_flags+7(%r9),_TIF_SINGLE_STEP
@@ -345,6 +347,14 @@ sysc_sigpending:
j sysc_work_loop
#
+# _TIF_NOTIFY_RESUME is set, call do_notify_resume
+#
+sysc_notify_resume:
+ la %r2,SP_PTREGS(%r15) # load pt_regs
+ larl %r14,sysc_work_loop
+ jg do_notify_resume # call do_notify_resume
+
+#
# _TIF_RESTART_SVC is set, set up registers and restart svc
#
sysc_restart:
@@ -367,20 +377,19 @@ sysc_singlestep:
jg do_single_step # branch to do_sigtrap
#
-# call syscall_trace before and after system call
-# special linkage: %r12 contains the return address for trace_svc
+# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
+# and after the system call
#
sysc_tracesys:
la %r2,SP_PTREGS(%r15) # load pt_regs
la %r3,0
srl %r7,2
stg %r7,SP_R2(%r15)
- brasl %r14,syscall_trace
+ brasl %r14,do_syscall_trace_enter
lghi %r0,NR_syscalls
- clg %r0,SP_R2(%r15)
+ clgr %r0,%r2
jnh sysc_tracenogo
- lg %r7,SP_R2(%r15) # strace might have changed the
- sll %r7,2 # system call
+ slag %r7,%r2,2 # *4
lgf %r8,0(%r7,%r10)
sysc_tracego:
lmg %r3,%r6,SP_R3(%r15)
@@ -391,9 +400,8 @@ sysc_tracenogo:
tm __TI_flags+7(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
jz sysc_return
la %r2,SP_PTREGS(%r15) # load pt_regs
- la %r3,1
larl %r14,sysc_return # return point is sysc_return
- jg syscall_trace
+ jg do_syscall_trace_exit
#
# a new process exits the kernel with ret_from_fork
@@ -672,6 +680,8 @@ io_work_loop:
jo io_reschedule
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jnz io_sigpending
+ tm __TI_flags+7(%r9),_TIF_NOTIFY_RESUME
+ jnz io_notify_resume
j io_restore
io_work_done:
@@ -712,6 +722,18 @@ io_sigpending:
TRACE_IRQS_OFF
j io_work_loop
+#
+# _TIF_NOTIFY_RESUME or is set, call do_notify_resume
+#
+io_notify_resume:
+ TRACE_IRQS_ON
+ stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
+ la %r2,SP_PTREGS(%r15) # load pt_regs
+ brasl %r14,do_notify_resume # call do_notify_resume
+ stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
+ TRACE_IRQS_OFF
+ j io_work_loop
+
/*
* External interrupt handler routine
*/
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 54b2779b5e2..2dcf590faba 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1705,7 +1705,10 @@ void __init setup_ipl(void)
void __init ipl_update_parameters(void)
{
- if (diag308(DIAG308_STORE, &ipl_block) == DIAG308_RC_OK)
+ int rc;
+
+ rc = diag308(DIAG308_STORE, &ipl_block);
+ if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG))
diag308_set_works = 1;
}
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 288ad490a6d..569079ec4ff 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -197,7 +197,7 @@ void __kprobes arch_arm_kprobe(struct kprobe *p)
args.new = BREAKPOINT_INSTRUCTION;
kcb->kprobe_status = KPROBE_SWAP_INST;
- stop_machine_run(swap_instruction, &args, NR_CPUS);
+ stop_machine(swap_instruction, &args, NULL);
kcb->kprobe_status = status;
}
@@ -212,7 +212,7 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
args.new = p->opcode;
kcb->kprobe_status = KPROBE_SWAP_INST;
- stop_machine_run(swap_instruction, &args, NR_CPUS);
+ stop_machine(swap_instruction, &args, NULL);
kcb->kprobe_status = status;
}
@@ -270,7 +270,6 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
__ctl_store(kcb->kprobe_saved_ctl, 9, 11);
}
-/* Called with kretprobe_lock held */
void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
struct pt_regs *regs)
{
@@ -332,7 +331,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
* No kprobe at this address. The fault has not been
* caused by a kprobe breakpoint. The race of breakpoint
* vs. kprobe remove does not exist because on s390 we
- * use stop_machine_run to arm/disarm the breakpoints.
+ * use stop_machine to arm/disarm the breakpoints.
*/
goto no_kprobe;
@@ -377,8 +376,7 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
INIT_HLIST_HEAD(&empty_rp);
- spin_lock_irqsave(&kretprobe_lock, flags);
- head = kretprobe_inst_table_head(current);
+ kretprobe_hash_lock(current, &head, &flags);
/*
* It is possible to have multiple instances associated with a given
@@ -417,7 +415,7 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
reset_current_kprobe();
- spin_unlock_irqrestore(&kretprobe_lock, flags);
+ kretprobe_hash_unlock(current, &flags);
preempt_enable_no_resched();
hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) {
diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c
index 18ed7abe16c..9872999c66d 100644
--- a/arch/s390/kernel/mem_detect.c
+++ b/arch/s390/kernel/mem_detect.c
@@ -9,27 +9,6 @@
#include <asm/sclp.h>
#include <asm/setup.h>
-static int memory_fast_detect(struct mem_chunk *chunk)
-{
- unsigned long val0 = 0;
- unsigned long val1 = 0xc;
- int rc = -EOPNOTSUPP;
-
- if (ipl_flags & IPL_NSS_VALID)
- return -EOPNOTSUPP;
- asm volatile(
- " diag %1,%2,0x260\n"
- "0: lhi %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "+d" (rc), "+d" (val0), "+d" (val1) : : "cc");
-
- if (rc || val0 != val1)
- return -EOPNOTSUPP;
- chunk->size = val0 + 1;
- return 0;
-}
-
static inline int tprot(unsigned long addr)
{
int rc = -EFAULT;
@@ -84,8 +63,6 @@ void detect_memory_layout(struct mem_chunk chunk[])
unsigned long flags, cr0;
memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk));
- if (memory_fast_detect(&chunk[0]) == 0)
- return;
/* Disable IRQs, DAT and low address protection so tprot does the
* right thing and we don't get scheduled away with low address
* protection disabled.
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 85defd01d29..3e2c05cb6a8 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -75,7 +75,9 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return sf->gprs[8];
}
-DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
+DEFINE_PER_CPU(struct s390_idle_data, s390_idle) = {
+ .lock = __SPIN_LOCK_UNLOCKED(s390_idle.lock)
+};
static int s390_idle_enter(void)
{
@@ -142,7 +144,7 @@ static void default_idle(void)
void cpu_idle(void)
{
for (;;) {
- tick_nohz_stop_sched_tick();
+ tick_nohz_stop_sched_tick(1);
while (!need_resched())
default_idle();
tick_nohz_restart_sched_tick();
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 2815bfe348a..1f31be1ecc4 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -35,6 +35,7 @@
#include <linux/signal.h>
#include <linux/elf.h>
#include <linux/regset.h>
+#include <linux/tracehook.h>
#include <asm/segment.h>
#include <asm/page.h>
@@ -170,6 +171,13 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
*/
tmp = (addr_t) task_pt_regs(child)->orig_gpr2;
+ } else if (addr < (addr_t) &dummy->regs.fp_regs) {
+ /*
+ * prevent reads of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ tmp = 0;
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -270,6 +278,13 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
*/
task_pt_regs(child)->orig_gpr2 = data;
+ } else if (addr < (addr_t) &dummy->regs.fp_regs) {
+ /*
+ * prevent writes of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ return 0;
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -428,6 +443,13 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
*/
tmp = *(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4);
+ } else if (addr < (addr_t) &dummy32->regs.fp_regs) {
+ /*
+ * prevent reads of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ tmp = 0;
+
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -514,6 +536,13 @@ static int __poke_user_compat(struct task_struct *child,
*/
*(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4) = tmp;
+ } else if (addr < (addr_t) &dummy32->regs.fp_regs) {
+ /*
+ * prevent writess of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ return 0;
+
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -611,40 +640,44 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
}
#endif
-asmlinkage void
-syscall_trace(struct pt_regs *regs, int entryexit)
+asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
{
- if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
-
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- goto out;
- if (!(current->ptrace & PT_PTRACED))
- goto out;
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
+ long ret;
/*
- * If the debuffer has set an invalid system call number,
- * we prepare to skip the system call restart handling.
+ * The sysc_tracesys code in entry.S stored the system
+ * call number to gprs[2].
*/
- if (!entryexit && regs->gprs[2] >= NR_syscalls)
+ ret = regs->gprs[2];
+ if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+ (tracehook_report_syscall_entry(regs) ||
+ regs->gprs[2] >= NR_syscalls)) {
+ /*
+ * Tracing decided this syscall should not happen or the
+ * debugger stored an invalid system call number. Skip
+ * the system call and the system call restart handling.
+ */
regs->trap = -1;
-
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
+ ret = -1;
}
- out:
- if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
- regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
- regs->gprs[4], regs->gprs[5]);
+
+ if (unlikely(current->audit_context))
+ audit_syscall_entry(test_thread_flag(TIF_31BIT) ?
+ AUDIT_ARCH_S390 : AUDIT_ARCH_S390X,
+ regs->gprs[2], regs->orig_gpr2,
+ regs->gprs[3], regs->gprs[4],
+ regs->gprs[5]);
+ return ret;
+}
+
+asmlinkage void do_syscall_trace_exit(struct pt_regs *regs)
+{
+ if (unlikely(current->audit_context))
+ audit_syscall_exit(AUDITSC_RESULT(regs->gprs[2]),
+ regs->gprs[2]);
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(regs, 0);
}
/*
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index b358e18273b..62122bad1e3 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -54,6 +54,7 @@
#include <asm/sections.h>
#include <asm/ebcdic.h>
#include <asm/compat.h>
+#include <asm/kvm_virtio.h>
long psw_kernel_bits = (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY |
PSW_MASK_MCHECK | PSW_DEFAULT_KEY);
@@ -766,7 +767,8 @@ setup_arch(char **cmdline_p)
printk("We are running under VM (64 bit mode)\n");
else if (MACHINE_IS_KVM) {
printk("We are running under KVM (64 bit mode)\n");
- add_preferred_console("ttyS", 1, NULL);
+ add_preferred_console("hvc", 0, NULL);
+ s390_virtio_console_init();
} else
printk("We are running native (64 bit mode)\n");
#endif /* CONFIG_64BIT */
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index b9768204021..4f7fc3059a8 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -24,6 +24,7 @@
#include <linux/tty.h>
#include <linux/personality.h>
#include <linux/binfmts.h>
+#include <linux/tracehook.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/lowcore.h>
@@ -507,6 +508,12 @@ void do_signal(struct pt_regs *regs)
*/
if (current->thread.per_info.single_step)
set_thread_flag(TIF_SINGLE_STEP);
+
+ /*
+ * Let tracing know that we've done the handler setup.
+ */
+ tracehook_signal_handler(signr, &info, &ka, regs,
+ test_thread_flag(TIF_SINGLE_STEP));
}
return;
}
@@ -526,3 +533,9 @@ void do_signal(struct pt_regs *regs)
set_thread_flag(TIF_RESTART_SVC);
}
}
+
+void do_notify_resume(struct pt_regs *regs)
+{
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+}
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b6781030cfb..9e8b1f9b8f4 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -585,6 +585,8 @@ int __cpuinit start_secondary(void *cpuvoid)
/* Enable pfault pseudo page faults on this cpu. */
pfault_init();
+ /* call cpu notifiers */
+ notify_cpu_starting(smp_processor_id());
/* Mark this cpu as online */
spin_lock(&call_lock);
cpu_set(smp_processor_id(), cpu_online_map);
@@ -610,7 +612,6 @@ static void __init smp_create_idle(unsigned int cpu)
if (IS_ERR(p))
panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
current_set[cpu] = p;
- spin_lock_init(&(&per_cpu(s390_idle, cpu))->lock);
}
static int __cpuinit smp_alloc_lowcore(int cpu)
@@ -845,7 +846,6 @@ void __init smp_prepare_boot_cpu(void)
current_set[0] = current;
smp_cpu_state[0] = CPU_STATE_CONFIGURED;
smp_cpu_polarization[0] = POLARIZATION_UNKNWN;
- spin_lock_init(&(&__get_cpu_var(s390_idle))->lock);
}
void __init smp_cpus_done(unsigned int max_cpus)
@@ -864,7 +864,8 @@ int setup_profiling_timer(unsigned int multiplier)
}
#ifdef CONFIG_HOTPLUG_CPU
-static ssize_t cpu_configure_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_configure_show(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
ssize_t count;
@@ -874,8 +875,9 @@ static ssize_t cpu_configure_show(struct sys_device *dev, char *buf)
return count;
}
-static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf,
- size_t count)
+static ssize_t cpu_configure_store(struct sys_device *dev,
+ struct sysdev_attribute *attr,
+ const char *buf, size_t count)
{
int cpu = dev->id;
int val, rc;
@@ -922,7 +924,8 @@ out:
static SYSDEV_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store);
#endif /* CONFIG_HOTPLUG_CPU */
-static ssize_t cpu_polarization_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_polarization_show(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
int cpu = dev->id;
ssize_t count;
@@ -950,7 +953,8 @@ static ssize_t cpu_polarization_show(struct sys_device *dev, char *buf)
}
static SYSDEV_ATTR(polarization, 0444, cpu_polarization_show, NULL);
-static ssize_t show_cpu_address(struct sys_device *dev, char *buf)
+static ssize_t show_cpu_address(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", __cpu_logical_map[dev->id]);
}
@@ -970,7 +974,8 @@ static struct attribute_group cpu_common_attr_group = {
.attrs = cpu_common_attrs,
};
-static ssize_t show_capability(struct sys_device *dev, char *buf)
+static ssize_t show_capability(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
unsigned int capability;
int rc;
@@ -982,7 +987,8 @@ static ssize_t show_capability(struct sys_device *dev, char *buf)
}
static SYSDEV_ATTR(capability, 0444, show_capability, NULL);
-static ssize_t show_idle_count(struct sys_device *dev, char *buf)
+static ssize_t show_idle_count(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
struct s390_idle_data *idle;
unsigned long long idle_count;
@@ -995,7 +1001,8 @@ static ssize_t show_idle_count(struct sys_device *dev, char *buf)
}
static SYSDEV_ATTR(idle_count, 0444, show_idle_count, NULL);
-static ssize_t show_idle_time(struct sys_device *dev, char *buf)
+static ssize_t show_idle_time(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
{
struct s390_idle_data *idle;
unsigned long long new_time;
@@ -1112,7 +1119,9 @@ out:
return rc;
}
-static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
+static ssize_t __ref rescan_store(struct sys_device *dev,
+ struct sysdev_attribute *attr,
+ const char *buf,
size_t count)
{
int rc;
@@ -1123,7 +1132,9 @@ static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store);
#endif /* CONFIG_HOTPLUG_CPU */
-static ssize_t dispatching_show(struct sys_device *dev, char *buf)
+static ssize_t dispatching_show(struct sys_devic