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-rw-r--r--arch/s390/kernel/asm-offsets.c5
-rw-r--r--arch/s390/kernel/compat_linux.c2
-rw-r--r--arch/s390/kernel/compat_signal.c2
-rw-r--r--arch/s390/kernel/compat_wrapper.c2
-rw-r--r--arch/s390/kernel/debug.c12
-rw-r--r--arch/s390/kernel/dumpstack.c3
-rw-r--r--arch/s390/kernel/early.c4
-rw-r--r--arch/s390/kernel/entry.S424
-rw-r--r--arch/s390/kernel/entry.h2
-rw-r--r--arch/s390/kernel/entry64.S372
-rw-r--r--arch/s390/kernel/ftrace.c136
-rw-r--r--arch/s390/kernel/idle.c29
-rw-r--r--arch/s390/kernel/irq.c5
-rw-r--r--arch/s390/kernel/kprobes.c178
-rw-r--r--arch/s390/kernel/mcount.S1
-rw-r--r--arch/s390/kernel/nmi.c8
-rw-r--r--arch/s390/kernel/perf_cpum_sf.c1
-rw-r--r--arch/s390/kernel/process.c3
-rw-r--r--arch/s390/kernel/ptrace.c115
-rw-r--r--arch/s390/kernel/setup.c2
-rw-r--r--arch/s390/kernel/signal.c2
-rw-r--r--arch/s390/kernel/smp.c1
-rw-r--r--arch/s390/kernel/syscalls.S2
-rw-r--r--arch/s390/kernel/time.c3
-rw-r--r--arch/s390/kernel/traps.c25
25 files changed, 742 insertions, 597 deletions
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index ef279a136801..e07e91605353 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -17,8 +17,8 @@
* Make sure that the compiler is new enough. We want a compiler that
* is known to work with the "Q" assembler constraint.
*/
-#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-#error Your compiler is too old; please use version 3.3.3 or newer
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+#error Your compiler is too old; please use version 4.3 or newer
#endif
int main(void)
@@ -156,7 +156,6 @@ int main(void)
DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
- DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func));
DEFINE(__LC_DUMP_REIPL, offsetof(struct _lowcore, ipib));
BLANK();
DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area));
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index ca38139423ae..437e61159279 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -249,7 +249,7 @@ COMPAT_SYSCALL_DEFINE2(s390_setgroups16, int, gidsetsize, u16 __user *, grouplis
struct group_info *group_info;
int retval;
- if (!capable(CAP_SETGID))
+ if (!may_setgroups())
return -EPERM;
if ((unsigned)gidsetsize > NGROUPS_MAX)
return -EINVAL;
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 009f5eb11125..34d5fa7b01b5 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -434,7 +434,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE;
} else {
/* Signal frames without vectors registers are short ! */
- __u16 __user *svc = (void *) frame + frame_size - 2;
+ __u16 __user *svc = (void __user *) frame + frame_size - 2;
if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
restorer = (unsigned long __force) svc | PSW32_ADDR_AMODE;
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
index c4f7a3d655b8..d7fa2f0f1425 100644
--- a/arch/s390/kernel/compat_wrapper.c
+++ b/arch/s390/kernel/compat_wrapper.c
@@ -218,3 +218,5 @@ COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char
COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags)
COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags)
COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size);
+COMPAT_SYSCALL_WRAP3(s390_pci_mmio_write, const unsigned long, mmio_addr, const void __user *, user_buffer, const size_t, length);
+COMPAT_SYSCALL_WRAP3(s390_pci_mmio_read, const unsigned long, mmio_addr, void __user *, user_buffer, const size_t, length);
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index ee8390da6ea7..c1f21aca76e7 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -1019,7 +1019,7 @@ debug_count_numargs(char *string)
*/
debug_entry_t*
-debug_sprintf_event(debug_info_t* id, int level,char *string,...)
+__debug_sprintf_event(debug_info_t *id, int level, char *string, ...)
{
va_list ap;
int numargs,idx;
@@ -1027,8 +1027,6 @@ debug_sprintf_event(debug_info_t* id, int level,char *string,...)
debug_sprintf_entry_t *curr_event;
debug_entry_t *active;
- if((!id) || (level > id->level))
- return NULL;
if (!debug_active || !id->areas)
return NULL;
numargs=debug_count_numargs(string);
@@ -1050,14 +1048,14 @@ debug_sprintf_event(debug_info_t* id, int level,char *string,...)
return active;
}
-EXPORT_SYMBOL(debug_sprintf_event);
+EXPORT_SYMBOL(__debug_sprintf_event);
/*
* debug_sprintf_exception:
*/
debug_entry_t*
-debug_sprintf_exception(debug_info_t* id, int level,char *string,...)
+__debug_sprintf_exception(debug_info_t *id, int level, char *string, ...)
{
va_list ap;
int numargs,idx;
@@ -1065,8 +1063,6 @@ debug_sprintf_exception(debug_info_t* id, int level,char *string,...)
debug_sprintf_entry_t *curr_event;
debug_entry_t *active;
- if((!id) || (level > id->level))
- return NULL;
if (!debug_active || !id->areas)
return NULL;
@@ -1089,7 +1085,7 @@ debug_sprintf_exception(debug_info_t* id, int level,char *string,...)
return active;
}
-EXPORT_SYMBOL(debug_sprintf_exception);
+EXPORT_SYMBOL(__debug_sprintf_exception);
/*
* debug_register_view:
diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
index acb412442e5e..a99852e96a77 100644
--- a/arch/s390/kernel/dumpstack.c
+++ b/arch/s390/kernel/dumpstack.c
@@ -191,7 +191,8 @@ void die(struct pt_regs *regs, const char *str)
console_verbose();
spin_lock_irq(&die_lock);
bust_spinlocks(1);
- printk("%s: %04x [#%d] ", str, regs->int_code & 0xffff, ++die_counter);
+ printk("%s: %04x ilc:%d [#%d] ", str, regs->int_code & 0xffff,
+ regs->int_code >> 17, ++die_counter);
#ifdef CONFIG_PREEMPT
printk("PREEMPT ");
#endif
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index cef2879edff3..302ac1f7f8e7 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -12,7 +12,6 @@
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/ctype.h>
-#include <linux/ftrace.h>
#include <linux/lockdep.h>
#include <linux/module.h>
#include <linux/pfn.h>
@@ -490,8 +489,5 @@ void __init startup_init(void)
detect_machine_facilities();
setup_topology();
sclp_early_detect();
-#ifdef CONFIG_DYNAMIC_FTRACE
- S390_lowcore.ftrace_func = (unsigned long)ftrace_caller;
-#endif
lockdep_on();
}
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 70203265196f..398329b2b518 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -53,7 +53,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
.macro TRACE_IRQS_ON
#ifdef CONFIG_TRACE_IRQFLAGS
basr %r2,%r0
- l %r1,BASED(.Lhardirqs_on)
+ l %r1,BASED(.Lc_hardirqs_on)
basr %r14,%r1 # call trace_hardirqs_on_caller
#endif
.endm
@@ -61,7 +61,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
.macro TRACE_IRQS_OFF
#ifdef CONFIG_TRACE_IRQFLAGS
basr %r2,%r0
- l %r1,BASED(.Lhardirqs_off)
+ l %r1,BASED(.Lc_hardirqs_off)
basr %r14,%r1 # call trace_hardirqs_off_caller
#endif
.endm
@@ -70,7 +70,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
#ifdef CONFIG_LOCKDEP
tm __PT_PSW+1(%r11),0x01 # returning to user ?
jz .+10
- l %r1,BASED(.Llockdep_sys_exit)
+ l %r1,BASED(.Lc_lockdep_sys_exit)
basr %r14,%r1 # call lockdep_sys_exit
#endif
.endm
@@ -87,8 +87,8 @@ _PIF_WORK = (_PIF_PER_TRAP)
tmh %r8,0x0001 # interrupting from user ?
jnz 1f
lr %r14,%r9
- sl %r14,BASED(.Lcritical_start)
- cl %r14,BASED(.Lcritical_length)
+ sl %r14,BASED(.Lc_critical_start)
+ cl %r14,BASED(.Lc_critical_length)
jhe 0f
la %r11,\savearea # inside critical section, do cleanup
bras %r14,cleanup_critical
@@ -162,7 +162,7 @@ ENTRY(__switch_to)
lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
br %r14
-__critical_start:
+.L__critical_start:
/*
* SVC interrupt handler routine. System calls are synchronous events and
* are executed with interrupts enabled.
@@ -170,145 +170,145 @@ __critical_start:
ENTRY(system_call)
stpt __LC_SYNC_ENTER_TIMER
-sysc_stm:
+.Lsysc_stm:
stm %r8,%r15,__LC_SAVE_AREA_SYNC
l %r12,__LC_THREAD_INFO
l %r13,__LC_SVC_NEW_PSW+4
lhi %r14,_PIF_SYSCALL
-sysc_per:
+.Lsysc_per:
l %r15,__LC_KERNEL_STACK
la %r11,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs
-sysc_vtime:
+.Lsysc_vtime:
UPDATE_VTIME %r8,%r9,__LC_SYNC_ENTER_TIMER
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
mvc __PT_PSW(8,%r11),__LC_SVC_OLD_PSW
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
st %r14,__PT_FLAGS(%r11)
-sysc_do_svc:
+.Lsysc_do_svc:
l %r10,__TI_sysc_table(%r12) # 31 bit system call table
lh %r8,__PT_INT_CODE+2(%r11)
sla %r8,2 # shift and test for svc0
- jnz sysc_nr_ok
+ jnz .Lsysc_nr_ok
# svc 0: system call number in %r1
cl %r1,BASED(.Lnr_syscalls)
- jnl sysc_nr_ok
+ jnl .Lsysc_nr_ok
sth %r1,__PT_INT_CODE+2(%r11)
lr %r8,%r1
sla %r8,2
-sysc_nr_ok:
+.Lsysc_nr_ok:
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
st %r2,__PT_ORIG_GPR2(%r11)
st %r7,STACK_FRAME_OVERHEAD(%r15)
l %r9,0(%r8,%r10) # get system call addr.
tm __TI_flags+3(%r12),_TIF_TRACE
- jnz sysc_tracesys
+ jnz .Lsysc_tracesys
basr %r14,%r9 # call sys_xxxx
st %r2,__PT_R2(%r11) # store return value
-sysc_return:
+.Lsysc_return:
LOCKDEP_SYS_EXIT
-sysc_tif:
+.Lsysc_tif:
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno sysc_restore
+ jno .Lsysc_restore
tm __PT_FLAGS+3(%r11),_PIF_WORK
- jnz sysc_work
+ jnz .Lsysc_work
tm __TI_flags+3(%r12),_TIF_WORK
- jnz sysc_work # check for thread work
+ jnz .Lsysc_work # check for thread work
tm __LC_CPU_FLAGS+3,_CIF_WORK
- jnz sysc_work
-sysc_restore:
+ jnz .Lsysc_work
+.Lsysc_restore:
mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
stpt __LC_EXIT_TIMER
lm %r0,%r15,__PT_R0(%r11)
lpsw __LC_RETURN_PSW
-sysc_done:
+.Lsysc_done:
#
# One of the work bits is on. Find out which one.
#
-sysc_work:
+.Lsysc_work:
tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
- jo sysc_mcck_pending
+ jo .Lsysc_mcck_pending
tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jo sysc_reschedule
+ jo .Lsysc_reschedule
tm __PT_FLAGS+3(%r11),_PIF_PER_TRAP
- jo sysc_singlestep
+ jo .Lsysc_singlestep
tm __TI_flags+3(%r12),_TIF_SIGPENDING
- jo sysc_sigpending
+ jo .Lsysc_sigpending
tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
- jo sysc_notify_resume
+ jo .Lsysc_notify_resume
tm __LC_CPU_FLAGS+3,_CIF_ASCE
- jo sysc_uaccess
- j sysc_return # beware of critical section cleanup
+ jo .Lsysc_uaccess
+ j .Lsysc_return # beware of critical section cleanup
#
# _TIF_NEED_RESCHED is set, call schedule
#
-sysc_reschedule:
- l %r1,BASED(.Lschedule)
- la %r14,BASED(sysc_return)
+.Lsysc_reschedule:
+ l %r1,BASED(.Lc_schedule)
+ la %r14,BASED(.Lsysc_return)
br %r1 # call schedule
#
# _CIF_MCCK_PENDING is set, call handler
#
-sysc_mcck_pending:
- l %r1,BASED(.Lhandle_mcck)
- la %r14,BASED(sysc_return)
+.Lsysc_mcck_pending:
+ l %r1,BASED(.Lc_handle_mcck)
+ la %r14,BASED(.Lsysc_return)
br %r1 # TIF bit will be cleared by handler
#
# _CIF_ASCE is set, load user space asce
#
-sysc_uaccess:
+.Lsysc_uaccess:
ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
lctl %c1,%c1,__LC_USER_ASCE # load primary asce
- j sysc_return
+ j .Lsysc_return
#
# _TIF_SIGPENDING is set, call do_signal
#
-sysc_sigpending:
+.Lsysc_sigpending:
lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Ldo_signal)
+ l %r1,BASED(.Lc_do_signal)
basr %r14,%r1 # call do_signal
tm __PT_FLAGS+3(%r11),_PIF_SYSCALL
- jno sysc_return
+ jno .Lsysc_return
lm %r2,%r7,__PT_R2(%r11) # load svc arguments
l %r10,__TI_sysc_table(%r12) # 31 bit system call table
xr %r8,%r8 # svc 0 returns -ENOSYS
clc __PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
- jnl sysc_nr_ok # invalid svc number -> do svc 0
+ jnl .Lsysc_nr_ok # invalid svc number -> do svc 0
lh %r8,__PT_INT_CODE+2(%r11) # load new svc number
sla %r8,2
- j sysc_nr_ok # restart svc
+ j .Lsysc_nr_ok # restart svc
#
# _TIF_NOTIFY_RESUME is set, call do_notify_resume
#
-sysc_notify_resume:
+.Lsysc_notify_resume:
lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Ldo_notify_resume)
- la %r14,BASED(sysc_return)
+ l %r1,BASED(.Lc_do_notify_resume)
+ la %r14,BASED(.Lsysc_return)
br %r1 # call do_notify_resume
#
# _PIF_PER_TRAP is set, call do_per_trap
#
-sysc_singlestep:
+.Lsysc_singlestep:
ni __PT_FLAGS+3(%r11),255-_PIF_PER_TRAP
lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Ldo_per_trap)
- la %r14,BASED(sysc_return)
+ l %r1,BASED(.Lc_do_per_trap)
+ la %r14,BASED(.Lsysc_return)
br %r1 # call do_per_trap
#
# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
# and after the system call
#
-sysc_tracesys:
- l %r1,BASED(.Ltrace_enter)
+.Lsysc_tracesys:
+ l %r1,BASED(.Lc_trace_enter)
lr %r2,%r11 # pass pointer to pt_regs
la %r3,0
xr %r0,%r0
@@ -316,22 +316,22 @@ sysc_tracesys:
st %r0,__PT_R2(%r11)
basr %r14,%r1 # call do_syscall_trace_enter
cl %r2,BASED(.Lnr_syscalls)
- jnl sysc_tracenogo
+ jnl .Lsysc_tracenogo
lr %r8,%r2
sll %r8,2
l %r9,0(%r8,%r10)
-sysc_tracego:
+.Lsysc_tracego:
lm %r3,%r7,__PT_R3(%r11)
st %r7,STACK_FRAME_OVERHEAD(%r15)
l %r2,__PT_ORIG_GPR2(%r11)
basr %r14,%r9 # call sys_xxx
st %r2,__PT_R2(%r11) # store return value
-sysc_tracenogo:
+.Lsysc_tracenogo:
tm __TI_flags+3(%r12),_TIF_TRACE
- jz sysc_return
- l %r1,BASED(.Ltrace_exit)
+ jz .Lsysc_return
+ l %r1,BASED(.Lc_trace_exit)
lr %r2,%r11 # pass pointer to pt_regs
- la %r14,BASED(sysc_return)
+ la %r14,BASED(.Lsysc_return)
br %r1 # call do_syscall_trace_exit
#
@@ -341,18 +341,18 @@ ENTRY(ret_from_fork)
la %r11,STACK_FRAME_OVERHEAD(%r15)
l %r12,__LC_THREAD_INFO
l %r13,__LC_SVC_NEW_PSW+4
- l %r1,BASED(.Lschedule_tail)
+ l %r1,BASED(.Lc_schedule_tail)
basr %r14,%r1 # call schedule_tail
TRACE_IRQS_ON
ssm __LC_SVC_NEW_PSW # reenable interrupts
tm __PT_PSW+1(%r11),0x01 # forking a kernel thread ?
- jne sysc_tracenogo
+ jne .Lsysc_tracenogo
# it's a kernel thread
lm %r9,%r10,__PT_R9(%r11) # load gprs
ENTRY(kernel_thread_starter)
la %r2,0(%r10)
basr %r14,%r9
- j sysc_tracenogo
+ j .Lsysc_tracenogo
/*
* Program check handler routine
@@ -369,7 +369,7 @@ ENTRY(pgm_check_handler)
tmh %r8,0x4000 # PER bit set in old PSW ?
jnz 0f # -> enabled, can't be a double fault
tm __LC_PGM_ILC+3,0x80 # check for per exception
- jnz pgm_svcper # -> single stepped svc
+ jnz .Lpgm_svcper # -> single stepped svc
0: CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
j 2f
@@ -386,42 +386,42 @@ ENTRY(pgm_check_handler)
jz 0f
l %r1,__TI_task(%r12)
tmh %r8,0x0001 # kernel per event ?
- jz pgm_kprobe
+ jz .Lpgm_kprobe
oi __PT_FLAGS+3(%r11),_PIF_PER_TRAP
mvc __THREAD_per_address(4,%r1),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r1),__LC_PER_CODE
mvc __THREAD_per_paid(1,%r1),__LC_PER_ACCESS_ID
0: REENABLE_IRQS
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Ljump_table)
+ l %r1,BASED(.Lc_jump_table)
la %r10,0x7f
n %r10,__PT_INT_CODE(%r11)
- je sysc_return
+ je .Lsysc_return
sll %r10,2
l %r1,0(%r10,%r1) # load address of handler routine
lr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # branch to interrupt-handler
- j sysc_return
+ j .Lsysc_return
#
# PER event in supervisor state, must be kprobes
#
-pgm_kprobe:
+.Lpgm_kprobe:
REENABLE_IRQS
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Ldo_per_trap)
+ l %r1,BASED(.Lc_do_per_trap)
lr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # call do_per_trap
- j sysc_return
+ j .Lsysc_return
#
# single stepped system call
#
-pgm_svcper:
+.Lpgm_svcper:
mvc __LC_RETURN_PSW(4),__LC_SVC_NEW_PSW
- mvc __LC_RETURN_PSW+4(4),BASED(.Lsysc_per)
+ mvc __LC_RETURN_PSW+4(4),BASED(.Lc_sysc_per)
lhi %r14,_PIF_SYSCALL | _PIF_PER_TRAP
- lpsw __LC_RETURN_PSW # branch to sysc_per and enable irqs
+ lpsw __LC_RETURN_PSW # branch to .Lsysc_per and enable irqs
/*
* IO interrupt handler routine
@@ -435,9 +435,9 @@ ENTRY(io_int_handler)
l %r13,__LC_SVC_NEW_PSW+4
lm %r8,%r9,__LC_IO_OLD_PSW
tmh %r8,0x0001 # interrupting from user ?
- jz io_skip
+ jz .Lio_skip
UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
-io_skip:
+.Lio_skip:
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
@@ -446,35 +446,35 @@ io_skip:
xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
TRACE_IRQS_OFF
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-io_loop:
- l %r1,BASED(.Ldo_IRQ)
+.Lio_loop:
+ l %r1,BASED(.Lc_do_IRQ)
lr %r2,%r11 # pass pointer to pt_regs
lhi %r3,IO_INTERRUPT
tm __PT_INT_CODE+8(%r11),0x80 # adapter interrupt ?
- jz io_call
+ jz .Lio_call
lhi %r3,THIN_INTERRUPT
-io_call:
+.Lio_call:
basr %r14,%r1 # call do_IRQ
tm __LC_MACHINE_FLAGS+2,0x10 # MACHINE_FLAG_LPAR
- jz io_return
+ jz .Lio_return
tpi 0
- jz io_return
+ jz .Lio_return
mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
- j io_loop
-io_return:
+ j .Lio_loop
+.Lio_return:
LOCKDEP_SYS_EXIT
TRACE_IRQS_ON
-io_tif:
+.Lio_tif:
tm __TI_flags+3(%r12),_TIF_WORK
- jnz io_work # there is work to do (signals etc.)
+ jnz .Lio_work # there is work to do (signals etc.)
tm __LC_CPU_FLAGS+3,_CIF_WORK
- jnz io_work
-io_restore:
+ jnz .Lio_work
+.Lio_restore:
mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
stpt __LC_EXIT_TIMER
lm %r0,%r15,__PT_R0(%r11)
lpsw __LC_RETURN_PSW
-io_done:
+.Lio_done:
#
# There is work todo, find out in which context we have been interrupted:
@@ -483,15 +483,15 @@ io_done:
# the preemption counter and if it is zero call preempt_schedule_irq
# Before any work can be done, a switch to the kernel stack is required.
#
-io_work:
+.Lio_work:
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jo io_work_user # yes -> do resched & signal
+ jo .Lio_work_user # yes -> do resched & signal
#ifdef CONFIG_PREEMPT
# check for preemptive scheduling
icm %r0,15,__TI_precount(%r12)
- jnz io_restore # preemption disabled
+ jnz .Lio_restore # preemption disabled
tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jno io_restore
+ jno .Lio_restore
# switch to kernel stack
l %r1,__PT_R15(%r11)
ahi %r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
@@ -499,20 +499,20 @@ io_work:
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
la %r11,STACK_FRAME_OVERHEAD(%r1)
lr %r15,%r1
- # TRACE_IRQS_ON already done at io_return, call
+ # TRACE_IRQS_ON already done at .Lio_return, call
# TRACE_IRQS_OFF to keep things symmetrical
TRACE_IRQS_OFF
- l %r1,BASED(.Lpreempt_irq)
+ l %r1,BASED(.Lc_preempt_irq)
basr %r14,%r1 # call preempt_schedule_irq
- j io_return
+ j .Lio_return
#else
- j io_restore
+ j .Lio_restore
#endif
#
# Need to do work before returning to userspace, switch to kernel stack
#
-io_work_user:
+.Lio_work_user:
l %r1,__LC_KERNEL_STACK
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
@@ -522,74 +522,74 @@ io_work_user:
#
# One of the work bits is on. Find out which one.
#
-io_work_tif:
+.Lio_work_tif:
tm __LC_CPU_FLAGS+3(%r12),_CIF_MCCK_PENDING
- jo io_mcck_pending
+ jo .Lio_mcck_pending
tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jo io_reschedule
+ jo .Lio_reschedule
tm __TI_flags+3(%r12),_TIF_SIGPENDING
- jo io_sigpending
+ jo .Lio_sigpending
tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
- jo io_notify_resume
+ jo .Lio_notify_resume
tm __LC_CPU_FLAGS+3,_CIF_ASCE
- jo io_uaccess
- j io_return # beware of critical section cleanup
+ jo .Lio_uaccess
+ j .Lio_return # beware of critical section cleanup
#
# _CIF_MCCK_PENDING is set, call handler
#
-io_mcck_pending:
- # TRACE_IRQS_ON already done at io_return
- l %r1,BASED(.Lhandle_mcck)
+.Lio_mcck_pending:
+ # TRACE_IRQS_ON already done at .Lio_return
+ l %r1,BASED(.Lc_handle_mcck)
basr %r14,%r1 # TIF bit will be cleared by handler
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _CIF_ASCE is set, load user space asce
#
-io_uaccess:
+.Lio_uaccess:
ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
lctl %c1,%c1,__LC_USER_ASCE # load primary asce
- j io_return
+ j .Lio_return
#
# _TIF_NEED_RESCHED is set, call schedule
#
-io_reschedule:
- # TRACE_IRQS_ON already done at io_return
- l %r1,BASED(.Lschedule)
+.Lio_reschedule:
+ # TRACE_IRQS_ON already done at .Lio_return
+ l %r1,BASED(.Lc_schedule)
ssm __LC_SVC_NEW_PSW # reenable interrupts
basr %r14,%r1 # call scheduler
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _TIF_SIGPENDING is set, call do_signal
#
-io_sigpending:
- # TRACE_IRQS_ON already done at io_return
- l %r1,BASED(.Ldo_signal)
+.Lio_sigpending:
+ # TRACE_IRQS_ON already done at .Lio_return
+ l %r1,BASED(.Lc_do_signal)
ssm __LC_SVC_NEW_PSW # reenable interrupts
lr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # call do_signal
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _TIF_SIGPENDING is set, call do_signal
#
-io_notify_resume:
- # TRACE_IRQS_ON already done at io_return
- l %r1,BASED(.Ldo_notify_resume)
+.Lio_notify_resume:
+ # TRACE_IRQS_ON already done at .Lio_return
+ l %r1,BASED(.Lc_do_notify_resume)
ssm __LC_SVC_NEW_PSW # reenable interrupts
lr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # call do_notify_resume
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
/*
* External interrupt handler routine
@@ -603,9 +603,9 @@ ENTRY(ext_int_handler)
l %r13,__LC_SVC_NEW_PSW+4
lm %r8,%r9,__LC_EXT_OLD_PSW
tmh %r8,0x0001 # interrupting from user ?
- jz ext_skip
+ jz .Lext_skip
UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
-ext_skip:
+.Lext_skip:
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
@@ -614,29 +614,29 @@ ext_skip:
mvc __PT_INT_PARM(4,%r11),__LC_EXT_PARAMS
xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
TRACE_IRQS_OFF
- l %r1,BASED(.Ldo_IRQ)
+ l %r1,BASED(.Lc_do_IRQ)
lr %r2,%r11 # pass pointer to pt_regs
lhi %r3,EXT_INTERRUPT
basr %r14,%r1 # call do_IRQ
- j io_return
+ j .Lio_return
/*
- * Load idle PSW. The second "half" of this function is in cleanup_idle.
+ * Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
*/
ENTRY(psw_idle)
st %r3,__SF_EMPTY(%r15)
basr %r1,0
- la %r1,psw_idle_lpsw+4-.(%r1)
+ la %r1,.Lpsw_idle_lpsw+4-.(%r1)
st %r1,__SF_EMPTY+4(%r15)
oi __SF_EMPTY+4(%r15),0x80
stck __CLOCK_IDLE_ENTER(%r2)
stpt __TIMER_IDLE_ENTER(%r2)
-psw_idle_lpsw:
+.Lpsw_idle_lpsw:
lpsw __SF_EMPTY(%r15)
br %r14
-psw_idle_end:
+.Lpsw_idle_end:
-__critical_end:
+.L__critical_end:
/*
* Machine check handler routines
@@ -650,7 +650,7 @@ ENTRY(mcck_int_handler)
l %r13,__LC_SVC_NEW_PSW+4
lm %r8,%r9,__LC_MCK_OLD_PSW
tm __LC_MCCK_CODE,0x80 # system damage?
- jo mcck_panic # yes -> rest of mcck code invalid
+ jo .Lmcck_panic # yes -> rest of mcck code invalid
la %r14,__LC_CPU_TIMER_SAVE_AREA
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid?
@@ -668,22 +668,22 @@ ENTRY(mcck_int_handler)
2: spt 0(%r14)
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
- jno mcck_panic # no -> skip cleanup critical
+ jno .Lmcck_panic # no -> skip cleanup critical
tm %r8,0x0001 # interrupting from user ?
- jz mcck_skip
+ jz .Lmcck_skip
UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER
-mcck_skip:
+.Lmcck_skip:
SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32
stm %r8,%r9,__PT_PSW(%r11)
xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Ldo_machine_check)
+ l %r1,BASED(.Lc_do_machine_check)
lr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # call s390_do_machine_check
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno mcck_return
+ jno .Lmcck_return
l %r1,__LC_KERNEL_STACK # switch to kernel stack
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
@@ -691,12 +691,12 @@ mcck_skip:
lr %r15,%r1
ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off
tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
- jno mcck_return
+ jno .Lmcck_return
TRACE_IRQS_OFF
- l %r1,BASED(.Lhandle_mcck)
+ l %r1,BASED(.Lc_handle_mcck)
basr %r14,%r1 # call s390_handle_mcck
TRACE_IRQS_ON
-mcck_return:
+.Lmcck_return:
mvc __LC_RETURN_MCCK_PSW(8),__PT_PSW(%r11) # move return PSW
tm __LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
jno 0f
@@ -706,15 +706,15 @@ mcck_return:
0: lm %r0,%r15,__PT_R0(%r11)
lpsw __LC_RETURN_MCCK_PSW
-mcck_panic:
+.Lmcck_panic:
l %r14,__LC_PANIC_STACK
slr %r14,%r15
sra %r14,PAGE_SHIFT
jz 0f
l %r15,__LC_PANIC_STACK
- j mcck_skip
+ j .Lmcck_skip
0: ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j mcck_skip
+ j .Lmcck_skip
#
# PSW restart interrupt handler
@@ -764,58 +764,58 @@ stack_overflow:
1: .long kernel_stack_overflow
#endif
-cleanup_table:
+.Lcleanup_table:
.long system_call + 0x80000000
- .long sysc_do_svc + 0x80000000
- .long sysc_tif + 0x80000000
- .long sysc_restore + 0x80000000
- .long sysc_done + 0x80000000
- .long io_tif + 0x80000000
- .long io_restore + 0x80000000
- .long io_done + 0x80000000
+ .long .Lsysc_do_svc + 0x80000000
+ .long .Lsysc_tif + 0x80000000
+ .long .Lsysc_restore + 0x80000000
+ .long .Lsysc_done + 0x80000000
+ .long .Lio_tif + 0x80000000
+ .long .Lio_restore + 0x80000000
+ .long .Lio_done + 0x80000000
.long psw_idle + 0x80000000
- .long psw_idle_end + 0x80000000
+ .long .Lpsw_idle_end + 0x80000000
cleanup_critical:
- cl %r9,BASED(cleanup_table) # system_call
+ cl %r9,BASED(.Lcleanup_table) # system_call
jl 0f
- cl %r9,BASED(cleanup_table+4) # sysc_do_svc
- jl cleanup_system_call
- cl %r9,BASED(cleanup_table+8) # sysc_tif
+ cl %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc
+ jl .Lcleanup_system_call
+ cl %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif
jl 0f
- cl %r9,BASED(cleanup_table+12) # sysc_restore
- jl cleanup_sysc_tif
- cl %r9,BASED(cleanup_table+16) # sysc_done
- jl cleanup_sysc_restore
- cl %r9,BASED(cleanup_table+20) # io_tif
+ cl %r9,BASED(.Lcleanup_table+12) # .Lsysc_restore
+ jl .Lcleanup_sysc_tif
+ cl %r9,BASED(.Lcleanup_table+16) # .Lsysc_done
+ jl .Lcleanup_sysc_restore
+ cl %r9,BASED(.Lcleanup_table+20) # .Lio_tif
jl 0f
- cl %r9,BASED(cleanup_table+24) # io_restore
- jl cleanup_io_tif
- cl %r9,BASED(cleanup_table+28) # io_done
- jl cleanup_io_restore
- cl %r9,BASED(cleanup_table+32) # psw_idle
+ cl %r9,BASED(.Lcleanup_table+24) # .Lio_restore
+ jl .Lcleanup_io_tif
+ cl %r9,BASED(.Lcleanup_table+28) # .Lio_done
+ jl .Lcleanup_io_restore
+ cl %r9,BASED(.Lcleanup_table+32) # psw_idle
jl 0f
- cl %r9,BASED(cleanup_table+36) # psw_idle_end
- jl cleanup_idle
+ cl %r9,BASED(.Lcleanup_table+36) # .Lpsw_idle_end
+ jl .Lcleanup_idle
0: br %r14
-cleanup_system_call:
+.Lcleanup_system_call:
# check if stpt has been executed
- cl %r9,BASED(cleanup_system_call_insn)
+ cl %r9,BASED(.Lcleanup_system_call_insn)
jh 0f
mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
chi %r11,__LC_SAVE_AREA_ASYNC
je 0f
mvc __LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
0: # check if stm has been executed
- cl %r9,BASED(cleanup_system_call_insn+4)
+ cl %r9,BASED(.Lcleanup_system_call_insn+4)
jh 0f
mvc __LC_SAVE_AREA_SYNC(32),0(%r11)
0: # set up saved registers r12, and r13
st %r12,16(%r11) # r12 thread-info pointer
st %r13,20(%r11) # r13 literal-pool pointer
# check if the user time calculation has been done
- cl %r9,BASED(cleanup_system_call_insn+8)
+ cl %r9,BASED(.Lcleanup_system_call_insn+8)
jh 0f
l %r10,__LC_EXIT_TIMER
l %r15,__LC_EXIT_TIMER+4
@@ -824,7 +824,7 @@ cleanup_system_call:
st %r10,__LC_USER_TIMER
st %r15,__LC_USER_TIMER+4
0: # check if the system time calculation has been done
- cl %r9,BASED(cleanup_system_call_insn+12)
+ cl %r9,BASED(.Lcleanup_system_call_insn+12)
jh 0f
l %r10,__LC_LAST_UPDATE_TIMER
l %r15,__LC_LAST_UPDATE_TIMER+4
@@ -848,20 +848,20 @@ cleanup_system_call:
# setup saved register 15
st %r15,28(%r11) # r15 stack pointer
# set new psw address and exit
- l %r9,BASED(cleanup_table+4) # sysc_do_svc + 0x80000000
+ l %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc + 0x80000000
br %r14
-cleanup_system_call_insn:
+.Lcleanup_system_call_insn:
.long system_call + 0x80000000
- .long sysc_stm + 0x80000000
- .long sysc_vtime + 0x80000000 + 36
- .long sysc_vtime + 0x80000000 + 76
+ .long .Lsysc_stm + 0x80000000
+ .long .Lsysc_vtime + 0x80000000 + 36
+ .long .Lsysc_vtime + 0x80000000 + 76
-cleanup_sysc_tif:
- l %r9,BASED(cleanup_table+8) # sysc_tif + 0x80000000
+.Lcleanup_sysc_tif:
+ l %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif + 0x80000000
br %r14
-cleanup_sysc_restore:
- cl %r9,BASED(cleanup_sysc_restore_insn)
+.Lcleanup_sysc_restore:
+ cl %r9,BASED(.Lcleanup_sysc_restore_insn)
jhe 0f
l %r9,12(%r11) # get saved pointer to pt_regs
mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
@@ -869,15 +869,15 @@ cleanup_sysc_restore:
lm %r0,%r7,__PT_R0(%r9)
0: lm %r8,%r9,__LC_RETURN_PSW
br %r14
-cleanup_sysc_restore_insn:
- .long sysc_done - 4 + 0x80000000
+.Lcleanup_sysc_restore_insn:
+ .long .Lsysc_done - 4 + 0x80000000
-cleanup_io_tif:
- l %r9,BASED(cleanup_table+20) # io_tif + 0x80000000
+.Lcleanup_io_tif:
+ l %r9,BASED(.Lcleanup_table+20) # .Lio_tif + 0x80000000
br %r14
-cleanup_io_restore:
- cl %r9,BASED(cleanup_io_restore_insn)
+.Lcleanup_io_restore:
+ cl %r9,BASED(.Lcleanup_io_restore_insn)
jhe 0f
l %r9,12(%r11) # get saved r11 pointer to pt_regs
mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
@@ -885,10 +885,10 @@ cleanup_io_restore:
lm %r0,%r7,__PT_R0(%r9)
0: lm %r8,%r9,__LC_RETURN_PSW
br %r14
-cleanup_io_restore_insn:
- .long io_done - 4 + 0x80000000
+.Lcleanup_io_restore_insn:
+ .long .Lio_done - 4 + 0x80000000
-cleanup_idle:
+.Lcleanup_idle:
# copy interrupt clock & cpu timer
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
@@ -897,7 +897,7 @@ cleanup_idle:
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
0: # check if stck has been executed
- cl %r9,BASED(cleanup_idle_insn)
+ cl %r9,BASED(.Lcleanup_idle_insn)
jhe 1f
mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r3)
@@ -913,12 +913,12 @@ cleanup_idle:
stm %r9,%r10,__LC_SYSTEM_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
# prepare return psw
- n %r8,BASED(cleanup_idle_wait) # clear irq & wait state bits
+ n %r8,BASED(.Lcleanup_idle_wait) # clear irq & wait state bits
l %r9,24(%r11) # return from psw_idle
br %r14
-cleanup_idle_insn:
- .long psw_idle_lpsw + 0x80000000
-cleanup_idle_wait:
+.Lcleanup_idle_insn:
+ .long .Lpsw_idle_lpsw + 0x80000000
+.Lcleanup_idle_wait:
.long 0xfcfdffff
/*
@@ -933,30 +933,30 @@ cleanup_idle_wait:
/*
* Symbol constants
*/
-.Ldo_machine_check: .long s390_do_machine_check
-.Lhandle_mcck: .long s390_handle_mcck
-.Ldo_IRQ: .long do_IRQ
-.Ldo_signal: .long do_signal
-.Ldo_notify_resume: .long do_notify_resume
-.Ldo_per_trap: .long do_per_trap
-.Ljump_table: .long pgm_check_table
-.Lschedule: .long schedule
+.Lc_do_machine_check: .long s390_do_machine_check
+.Lc_handle_mcck: .long s390_handle_mcck
+.Lc_do_IRQ: .long do_IRQ
+.Lc_do_signal: .long do_signal
+.Lc_do_notify_resume: .long do_notify_resume
+.Lc_do_per_trap: .long do_per_trap
+.Lc_jump_table: .long pgm_check_table
+.Lc_schedule: .long schedule
#ifdef CONFIG_PREEMPT
-.Lpreempt_irq: .long preempt_schedule_irq
+.Lc_preempt_irq: .long preempt_schedule_irq
#endif
-.Ltrace_enter: .long do_syscall_trace_enter
-.Ltrace_exit: .long do_syscall_trace_exit
-.Lschedule_tail: .long schedule_tail
-.Lsysc_per: .long sysc_per + 0x80000000
+.Lc_trace_enter: .long do_syscall_trace_enter
+.Lc_trace_exit: .long do_syscall_trace_exit
+.Lc_schedule_tail: .long schedule_tail
+.Lc_sysc_per: .long .Lsysc_per + 0x80000000
#ifdef CONFIG_TRACE_IRQFLAGS
-.Lhardirqs_on: .long trace_hardirqs_on_caller
-.Lhardirqs_off: .long trace_hardirqs_off_caller
+.Lc_hardirqs_on: .long trace_hardirqs_on_caller
+.Lc_hardirqs_off: .long trace_hardirqs_off_caller
#endif
#ifdef CONFIG_LOCKDEP
-.Llockdep_sys_exit: .long lockdep_sys_exit
+.Lc_lockdep_sys_exit: .long lockdep_sys_exit
#endif
-.Lcritical_start: .long __critical_start + 0x80000000
-.Lcritical_length: .long __critical_end - __critical_start
+.Lc_critical_start: .long .L__critical_start + 0x80000000
+.Lc_critical_length: .long .L__critical_end - .L__critical_start
.section .rodata, "a"
#define SYSCALL(esa,esame,emu) .long esa
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index 0554b9771c9f..8e61393c8275 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -74,4 +74,6 @@ struct old_sigaction;
long sys_s390_personality(unsigned int personality);
long sys_s390_runtime_instr(int command, int signum);
+long sys_s390_pci_mmio_write(unsigned long, const void __user *, size_t);
+long sys_s390_pci_mmio_read(unsigned long, void __user *, size_t);
#endif /* _ENTRY_H */
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 7b2e03afd017..c329446a951d 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -91,7 +91,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
.if \reason==1
# Some program interrupts are suppressing (e.g. protection).
# We must also check the instruction after SIE in that case.
- # do_protection_exception will rewind to rewind_pad
+ # do_protection_exception will rewind to .Lrewind_pad
jh .+42
.else
jhe .+42
@@ -192,7 +192,7 @@ ENTRY(__switch_to)
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
br %r14
-__critical_start:
+.L__critical_start:
/*
* SVC interrupt handler routine. System calls are synchronous events and
* are executed with interrupts enabled.
@@ -200,15 +200,15 @@ __critical_start:
ENTRY(system_call)
stpt __LC_SYNC_ENTER_TIMER
-sysc_stmg:
+.Lsysc_stmg:
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
lg %r10,__LC_LAST_BREAK
lg %r12,__LC_THREAD_INFO
lghi %r14,_PIF_SYSCALL
-sysc_per:
+.Lsysc_per:
lg %r15,__LC_KERNEL_STACK
la %r11,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs
-sysc_vtime:
+.Lsysc_vtime:
UPDATE_VTIME %r13,__LC_SYNC_ENTER_TIMER
LAST_BREAK %r13
stmg %r0,%r7,__PT_R0(%r11)
@@ -216,39 +216,39 @@ sysc_vtime:
mvc __PT_PSW(16,%r11),__LC_SVC_OLD_PSW
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
stg %r14,__PT_FLAGS(%r11)
-sysc_do_svc:
+.Lsysc_do_svc:
lg %r10,__TI_sysc_table(%r12) # address of system call table
llgh %r8,__PT_INT_CODE+2(%r11)
slag %r8,%r8,2 # shift and test for svc 0
- jnz sysc_nr_ok
+ jnz .Lsysc_nr_ok
# svc 0: system call number in %r1
llgfr %r1,%r1 # clear high word in r1
cghi %r1,NR_syscalls
- jnl sysc_nr_ok
+ jnl .Lsysc_nr_ok
sth %r1,__PT_INT_CODE+2(%r11)
slag %r8,%r1,2
-sysc_nr_ok:
+.Lsysc_nr_ok:
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
stg %r2,__PT_ORIG_GPR2(%r11)
stg %r7,STACK_FRAME_OVERHEAD(%r15)
lgf %r9,0(%r8,%r10) # get system call add.
tm __TI_flags+7(%r12),_TIF_TRACE
- jnz sysc_tracesys
+ jnz .Lsysc_tracesys
basr %r14,%r9 # call sys_xxxx
stg %r2,__PT_R2(%r11) # store return value
-sysc_return:
+.Lsysc_return:
LOCKDEP_SYS_EXIT
-sysc_tif:
+.Lsysc_tif:
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno sysc_restore
+ jno .Lsysc_restore
tm __PT_FLAGS+7(%r11),_PIF_WORK
- jnz sysc_work
+ jnz .Lsysc_work
tm __TI_flags+7(%r12),_TIF_WORK
- jnz sysc_work # check for work
+ jnz .Lsysc_work # check for work
tm __LC_CPU_FLAGS+7,_CIF_WORK
- jnz sysc_work
-sysc_restore:
+ jnz .Lsysc_work
+.Lsysc_restore:
lg %r14,__LC_VDSO_PER_CPU
lmg %r0,%r10,__PT_R0(%r11)
mvc __LC_RETURN_PSW(16),__PT_PSW(%r11)
@@ -256,101 +256,101 @@ sysc_restore:
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
lmg %r11,%r15,__PT_R11(%r11)
lpswe __LC_RETURN_PSW
-sysc_done:
+.Lsysc_done:
#
# One of the work bits is on. Find out which one.
#
-sysc_work:
+.Lsysc_work:
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
- jo sysc_mcck_pending
+ jo .Lsysc_mcck_pending
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
- jo sysc_reschedule
+ jo .Lsysc_reschedule
#ifdef CONFIG_UPROBES
tm __TI_flags+7(%r12),_TIF_UPROBE
- jo sysc_uprobe_notify
+ jo .Lsysc_uprobe_notify
#endif
tm __PT_FLAGS+7(%r11),_PIF_PER_TRAP
- jo sysc_singlestep
+ jo .Lsysc_singlestep
tm __TI_flags+7(%r12),_TIF_SIGPENDING
- jo sysc_sigpending
+ jo .Lsysc_sigpending
tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME
- jo sysc_notify_resume
+ jo .Lsysc_notify_resume
tm __LC_CPU_FLAGS+7,_CIF_ASCE
- jo sysc_uaccess
- j sysc_return # beware of critical section cleanup
+ jo .Lsysc_uaccess
+ j .Lsysc_return # beware of critical section cleanup
#
# _TIF_NEED_RESCHED is set, call schedule
#
-sysc_reschedule:
- larl %r14,sysc_return
+.Lsysc_reschedule:
+ larl %r14,.Lsysc_return
jg schedule
#
# _CIF_MCCK_PENDING is set, call handler
#
-sysc_mcck_pending:
- larl %r14,sysc_return
+.Lsysc_mcck_pending:
+ larl %r14,.Lsysc_return
jg s390_handle_mcck # TIF bit will be cleared by handler
#
# _CIF_ASCE is set, load user space asce
#
-sysc_uaccess:
+.Lsysc_uaccess:
ni __LC_CPU_FLAGS+7,255-_CIF_ASCE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
- j sysc_return
+ j .Lsysc_return
#
# _TIF_SIGPENDING is set, call do_signal
#
-sysc_sigpending:
+.Lsysc_sigpending:
lgr %r2,%r11 # pass pointer to pt_regs
brasl %r14,do_signal
tm __PT_FLAGS+7(%r11),_PIF_SYSCALL
- jno sysc_return
+ jno .Lsysc_return
lmg %r2,%r7,__PT_R2(%r11) # load svc arguments
lg %r10,__TI_sysc_table(%r12) # address of system call table
lghi %r8,0 # svc 0 returns -ENOSYS
llgh %r1,__PT_INT_CODE+2(%r11) # load new svc number
cghi %r1,NR_syscalls
- jnl sysc_nr_ok # invalid svc number -> do svc 0
+ jnl .Lsysc_nr_ok # invalid svc number -> do svc 0
slag %r8,%r1,2
- j sysc_nr_ok # restart svc
+ j .Lsysc_nr_ok # restart svc
#
# _TIF_NOTIFY_RESUME is set, call do_notify_resume
#
-sysc_notify_resume:
+.Lsysc_notify_resume:
lgr %r2,%r11 # pass pointer to pt_regs
- larl %r14,sysc_return
+ larl %r14,.Lsysc_return
jg do_notify_resume
#
# _TIF_UPROBE is set, call uprobe_notify_resume
#
#ifdef CONFIG_UPROBES
-sysc_uprobe_notify:
+.Lsysc_uprobe_notify:
lgr %r2,%r11 # pass pointer to pt_regs
- larl %r14,sysc_return
+ larl %r14,.Lsysc_return
jg uprobe_notify_resume
#endif
#
# _PIF_PER_TRAP is set, call do_per_trap
#
-sysc_singlestep:
+.Lsysc_singlestep:
ni __PT_FLAGS+7(%r11),255-_PIF_PER_TRAP
lgr %r2,%r11 # pass pointer to pt_regs
- larl %r14,sysc_return
+ larl %r14,.Lsysc_return
jg do_per_trap
#
# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
# and after the system call
#
-sysc_tracesys:
+.Lsysc_tracesys:
lgr %r2,%r11 # pass pointer to pt_regs
la %r3,0
llgh %r0,__PT_INT_CODE+2(%r11)
@@ -358,20 +358,20 @@ sysc_tracesys:
brasl %r14,do_syscall_trace_enter
lghi %r0,NR_syscalls
clgr %r0,%r2
- jnh sysc_tracenogo
+ jnh .Lsysc_tracenogo
sllg %r8,%r2,2
lgf %r9,0(%r8,%r10)
-sysc_tracego:
+.Lsysc_tracego:
lmg %r3,%r7,__PT_R3(%r11)
stg %r7,STACK_FRAME_OVERHEAD(%r15)
lg %r2,__PT_ORIG_GPR2(%r11)
basr %r14,%r9 # call sys_xxx
stg %r2,__PT_R2(%r11) # store return value
-sysc_tracenogo:
+.Lsysc_tracenogo:
tm __TI_flags+7(%r12),_TIF_TRACE
- jz sysc_return
+ jz .Lsysc_return
lgr %r2,%r11 # pass pointer to pt_regs
- larl %r14,sysc_return
+ larl %r14,.Lsysc_return
jg do_syscall_trace_exit
#
@@ -384,13 +384,13 @@ ENTRY(ret_from_fork)
TRACE_IRQS_ON
ssm __LC_SVC_NEW_PSW # reenable interrupts
tm __PT_PSW+1(%r11),0x01 # forking a kernel thread ?
- jne sysc_tracenogo
+ jne .Lsysc_tracenogo
# it's a kernel thread
lmg %r9,%r10,__PT_R9(%r11) # load gprs
ENTRY(kernel_thread_starter)
la %r2,0(%r10)
basr %r14,%r9
- j sysc_tracenogo
+ j .Lsysc_tracenogo
/*
* Program check handler routine
@@ -409,7 +409,7 @@ ENTRY(pgm_check_handler)
tmhh %r8,0x4000 # PER bit set in old PSW ?
jnz 0f # -> enabled, can't be a double fault
tm __LC_PGM_ILC+3,0x80 # check for per exception
- jnz pgm_svcper # -> single stepped svc
+ jnz .Lpgm_svcper # -> single stepped svc
0: CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
j 2f
@@ -432,7 +432,7 @@ ENTRY(pgm_check_handler)
tm __LC_PGM_ILC+3,0x80 # check for per exception
jz 0f
tmhh %r8,0x0001 # kernel per event ?
- jz pgm_kprobe
+ jz .Lpgm_kprobe
oi __PT_FLAGS+7(%r11),_PIF_PER_TRAP
mvc __THREAD_per_address(8,%r14),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r14),__LC_PER_CODE
@@ -443,31 +443,31 @@ ENTRY(pgm_check_handler)
llgh %r10,__PT_INT_CODE+2(%r11)
nill %r10,0x007f
sll %r10,2
- je sysc_return
+ je .Lsysc_return
lgf %r1,0(%r10,%r1) # load address of handler routine
lgr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # branch to interrupt-handler
- j sysc_return
+ j .Lsysc_return
#
# PER event in supervisor state, must be kprobes
#
-pgm_kprobe:
+.Lpgm_kprobe:
REENABLE_IRQS
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
lgr %r2,%r11 # pass pointer to pt_regs
brasl %r14,do_per_trap
- j sysc_return
+ j .Lsysc_return
#
# single stepped system call
#
-pgm_svcper:
+.Lpgm_svcper:
mvc __LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
- larl %r14,sysc_per
+ larl %r14,.Lsysc_per
stg %r14,__LC_RETURN_PSW+8
lghi %r14,_PIF_SYSCALL | _PIF_PER_TRAP
- lpswe __LC_RETURN_PSW # branch to sysc_per and enable irqs
+ lpswe __LC_RETURN_PSW # branch to .Lsysc_per and enable irqs
/*
* IO interrupt handler routine
@@ -483,10 +483,10 @@ ENTRY(io_int_handler)
HANDLE_SIE_INTERCEPT %r14,2
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
tmhh %r8,0x0001 # interrupting from user?
- jz io_skip
+ jz .Lio_skip
UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
LAST_BREAK %r14
-io_skip:
+.Lio_skip:
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
stmg %r8,%r9,__PT_PSW(%r11)
@@ -494,29 +494,29 @@ io_skip:
xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
TRACE_IRQS_OFF
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-io_loop:
+.Lio_loop:
lgr %r2,%r11 # pass pointer to pt_regs
lghi %r3,IO_INTERRUPT
tm __PT_INT_CODE+8(%r11),0x80 # adapter interrupt ?
- jz io_call
+ jz .Lio_call
lghi %r3,THIN_INTERRUPT
-io_call:
+.Lio_call:
brasl %r14,do_IRQ
tm __LC_MACHINE_FLAGS+6,0x10 # MACHINE_FLAG_LPAR
- jz io_return
+ jz .Lio_return
tpi 0
- jz io_return
+ jz .Lio_return
mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
- j io_loop
-io_return:
+ j .Lio_loop
+.Lio_return:
LOCKDEP_SYS_EXIT
TRACE_IRQS_ON
-io_tif:
+.Lio_tif:
tm __TI_flags+7(%r12),_TIF_WORK
- jnz io_work # there is work to do (signals etc.)
+ jnz .Lio_work # there is work to do (signals etc.)
tm __LC_CPU_FLAGS+7,_CIF_WORK
- jnz io_work
-io_restore:
+ jnz .Lio_work
+.Lio_restore:
lg %r14,__LC_VDSO_PER_CPU
lmg %r0,%r10,__PT_R0(%r11)
mvc __LC_RETURN_PSW(16),__PT_PSW(%r11)
@@ -524,7 +524,7 @@ io_restore:
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
lmg %r11,%r15,__PT_R11(%r11)
lpswe __LC_RETURN_PSW
-io_done:
+.Lio_done:
#
# There is work todo, find out in which context we have been interrupted:
@@ -535,15 +535,15 @@ io_done:
# the preemption counter and if it is zero call preempt_schedule_irq
# Before any work can be done, a switch to the kernel stack is required.
#
-io_work:
+.Lio_work:
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jo io_work_user # yes -> do resched & signal
+ jo .Lio_work_user # yes -> do resched & signal
#ifdef CONFIG_PREEMPT
# check for preemptive scheduling
icm %r0,15,__TI_precount(%r12)
- jnz io_restore # preemption is disabled
+ jnz .Lio_restore # preemption is disabled
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
- jno io_restore
+ jno .Lio_restore
# switch to kernel stack
lg %r1,__PT_R15(%r11)
aghi %r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
@@ -551,19 +551,19 @@ io_work:
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
la %r11,STACK_FRAME_OVERHEAD(%r1)
lgr %r15,%r1
- # TRACE_IRQS_ON already done at io_return, call
+ # TRACE_IRQS_ON already done at .Lio_return, call
# TRACE_IRQS_OFF to keep things symmetrical
TRACE_IRQS_OFF
brasl %r14,preempt_schedule_irq
- j io_return
+ j .Lio_return
#else
- j io_restore
+ j .Lio_restore
#endif
#
# Need to do work before returning to userspace, switch to kernel stack
#
-io_work_user:
+.Lio_work_user:
lg %r1,__LC_KERNEL_STACK
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
@@ -573,70 +573,70 @@ io_work_user:
#
# One of the work bits is on. Find out which one.
#
-io_work_tif:
+.Lio_work_tif:
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
- jo io_mcck_pending
+ jo .Lio_mcck_pending
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
- jo io_reschedule
+ jo .Lio_reschedule
tm __TI_flags+7(%r12),_TIF_SIGPENDING
- jo io_sigpending
+ jo .Lio_sigpending
tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME
- jo io_notify_resume
+ jo .Lio_notify_resume
tm __LC_CPU_FLAGS+7,_CIF_ASCE
- jo io_uaccess
- j io_return # beware of critical section cleanup
+ jo .Lio_uaccess
+ j .Lio_return # beware of critical section cleanup
#
# _CIF_MCCK_PENDING is set, call handler
#
-io_mcck_pending:
- # TRACE_IRQS_ON already done at io_return
+.Lio_mcck_pending:
+ # TRACE_IRQS_ON already done at .Lio_return
brasl %r14,s390_handle_mcck # TIF bit will be cleared by handler
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _CIF_ASCE is set, load user space asce
#
-io_uaccess:
+.Lio_uaccess:
ni __LC_CPU_FLAGS+7,255-_CIF_ASCE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
- j io_return
+ j .Lio_return
#
# _TIF_NEED_RESCHED is set, call schedule
#
-io_reschedule:
- # TRACE_IRQS_ON already done at io_return
+.Lio_reschedule:
+ # TRACE_IRQS_ON already done at .Lio_return
ssm __LC_SVC_NEW_PSW # reenable interrupts
brasl %r14,schedule # call scheduler
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _TIF_SIGPENDING or is set, call do_signal
#
-io_sigpending:
- # TRACE_IRQS_ON already done at io_return
+.Lio_sigpending:
+ # TRACE_IRQS_ON already done at .Lio_return
ssm __LC_SVC_NEW_PSW # reenable interrupts
lgr %r2,%r11 # pass pointer to pt_regs
brasl %r14,do_signal
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
#
# _TIF_NOTIFY_RESUME or is set, call do_notify_resume
#
-io_notify_resume:
- # TRACE_IRQS_ON already done at io_return
+.Lio_notify_resume:
+ # TRACE_IRQS_ON already done at .Lio_return
ssm __LC_SVC_NEW_PSW # reenable interrupts
lgr %r2,%r11 # pass pointer to pt_regs
brasl %r14,do_notify_resume
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
TRACE_IRQS_OFF
- j io_return
+ j .Lio_return
/*
* External interrupt handler routine
@@ -652,10 +652,10 @@ ENTRY(ext_int_handler)
HANDLE_SIE_INTERCEPT %r14,3
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
tmhh %r8,0x0001 # interrupting from user ?
- jz ext_skip
+ jz .Lext_skip
UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
LAST_BREAK %r14
-ext_skip:
+.Lext_skip:
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
stmg %r8,%r9,__PT_PSW(%r11)
@@ -669,23 +669,23 @@ ext_skip:
lgr %r2,%r11 # pass pointer to pt_regs
lghi %r3,EXT_INTERRUPT
brasl %r14,do_IRQ
- j io_return
+ j .Lio_return
/*
- * Load idle PSW. The second "half" of this function is in cleanup_idle.
+ * Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
*/
ENTRY(psw_idle)
stg %r3,__SF_EMPTY(%r15)
- larl %r1,psw_idle_lpsw+4
+ larl %r1,.Lpsw_idle_lpsw+4
stg %r1,__SF_EMPTY+8(%r15)
STCK __CLOCK_IDLE_ENTER(%r2)
stpt __TIMER_IDLE_ENTER(%r2)
-psw_idle_lpsw:
+.Lpsw_idle_lpsw:
lpswe __SF_EMPTY(%r15)
br %r14
-psw_idle_end:
+.Lpsw_idle_end:
-__critical_end:
+.L__critical_end:
/*
* Machine check handler routines
@@ -701,7 +701,7 @@ ENTRY(mcck_int_handler)
lmg %r8,%r9,__LC_MCK_OLD_PSW
HANDLE_SIE_INTERCEPT %r14,4
tm __LC_MCCK_CODE,0x80 # system damage?
- jo mcck_panic # yes -> rest of mcck code invalid
+ jo .Lmcck_panic # yes -> rest of mcck code invalid
lghi %r14,__LC_CPU_TIMER_SAVE_AREA
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid?
@@ -719,13 +719,13 @@ ENTRY(mcck_int_handler)
2: spt 0(%r14)
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
- jno mcck_panic # no -> skip cleanup critical
+ jno .Lmcck_panic # no -> skip cleanup critical
SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+64,__LC_PANIC_STACK,PAGE_SHIFT
tm %r8,0x0001 # interrupting from user ?
- jz mcck_skip
+ jz .Lmcck_skip
UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER
LAST_BREAK %r14
-mcck_skip:
+.Lmcck_skip:
lghi %r14,__LC_GPREGS_SAVE_AREA+64
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(64,%r11),0(%r14)
@@ -735,7 +735,7 @@ mcck_skip:
lgr %r2,%r11 # pass pointer to pt_regs
brasl %r14,s390_do_machine_check
tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno mcck_return
+ jno .Lmcck_return
lg %r1,__LC_KERNEL_STACK # switch to kernel stack
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
@@ -743,11 +743,11 @@ mcck_skip:
lgr %r15,%r1
ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
- jno mcck_return
+ jno .Lmcck_return
TRACE_IRQS_OFF
brasl %r14,s390_handle_mcck
TRACE_IRQS_ON
-mcck_return:
+.Lmcck_return:
lg %r14,__LC_VDSO_PER_CPU
lmg %r0,%r10,__PT_R0(%r11)
mvc __LC_RETURN_MCCK_PSW(16),__PT_PSW(%r11) # move return PSW
@@ -758,14 +758,14 @@ mcck_return:
0: lmg %r11,%r15,__PT_R11(%r11)
lpswe __LC_RETURN_MCCK_PSW
-mcck_panic:
+.Lmcck_panic:
lg %r14,__LC_PANIC_STACK
slgr %r14,%r15
srag %r14,%r14,PAGE_SHIFT
jz 0f
lg %r15,__LC_PANIC_STACK
0: aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j mcck_skip
+ j .Lmcck_skip
#
# PSW restart interrupt handler
@@ -815,69 +815,69 @@ stack_overflow:
#endif
.align 8
-cleanup_table:
+.Lcleanup_table:
.quad system_call
- .quad sysc_do_svc
- .quad sysc_tif
- .quad sysc_restore
- .quad sysc_done
- .quad io_tif
- .quad io_restore
- .quad io_done
+ .quad .Lsysc_do_svc
+ .quad .Lsysc_tif
+ .quad .Lsysc_restore
+ .quad .Lsysc_done
+ .quad .Lio_tif
+ .quad .Lio_restore
+ .quad .Lio_done
.quad psw_idle
- .quad psw_idle_end
+ .quad .Lpsw_idle_end
cleanup_critical:
- clg %r9,BASED(cleanup_table) # system_call
+ clg %r9,BASED(.Lcleanup_table) # system_call
jl 0f
- clg %r9,BASED(cleanup_table+8) # sysc_do_svc
- jl cleanup_system_call
- clg %r9,BASED(cleanup_table+16) # sysc_tif
+ clg %r9,BASED(.Lcleanup_table+8) # .Lsysc_do_svc
+ jl .Lcleanup_system_call
+ clg %r9,BASED(.Lcleanup_table+16) # .Lsysc_tif
jl 0f
- clg %r9,BASED(cleanup_table+24) # sysc_restore
- jl cleanup_sysc_tif
- clg %r9,BASED(cleanup_table+32) # sysc_done
- jl cleanup_sysc_restore
- clg %r9,BASED(cleanup_table+40) # io_tif
+ clg %r9,BASED(.Lcleanup_table+24) # .Lsysc_restore
+ jl .Lcleanup_sysc_tif
+ clg %r9,BASED(.Lcleanup_table+32) # .Lsysc_done
+ jl .Lcleanup_sysc_restore
+ clg %r9,BASED(.Lcleanup_table+40) # .Lio_tif
jl 0f
- clg %r9,BASED(cleanup_table+48) # io_restore
- jl cleanup_io_tif
- clg %r9,BASED(cleanup_table+56) # io_done
- jl cleanup_io_restore
- clg %r9,BASED(cleanup_table+64) # psw_idle
+ clg %r9,BASED(.Lcleanup_table+48) # .Lio_restore
+ jl .Lcleanup_io_tif
+ clg %r9,BASED(.Lcleanup_table+56) # .Lio_done
+ jl .Lcleanup_io_restore
+ clg %r9,BASED(.Lcleanup_table+64) # psw_idle
jl 0f
- clg %r9,BASED(cleanup_table+72) # psw_idle_end
- jl cleanup_idle
+ clg %r9,BASED(.Lcleanup_table+72) # .Lpsw_idle_end
+ jl .Lcleanup_idle
0: br %r14
-cleanup_system_call:
+.Lcleanup_system_call:
# check if stpt has been executed
- clg %r9,BASED(cleanup_system_call_insn)
+ clg %r9,BASED(.Lcleanup_system_call_insn)
jh 0f
mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
cghi %r11,__LC_SAVE_AREA_ASYNC
je 0f
mvc __LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
0: # check if stmg has been executed
- clg %r9,BASED(cleanup_system_call_insn+8)
+ clg %r9,BASED(.Lcleanup_system_call_insn+8)
jh 0f
mvc __LC_SAVE_AREA_SYNC(64),0(%r11)
0: # check if base register setup + TIF bit load has been done
- clg %r9,BASED(cleanup_system_call_insn+16)
+ clg %r9,BASED(.Lcleanup_system_call_insn+16)
jhe 0f
# set up saved registers r10 and r12
stg %r10,16(%r11) # r10 last break
stg %r12,32(%r11) # r12 thread-info pointer
0: # check if the user time update has been done
- clg %r9,BASED(cleanup_system_call_insn+24)
+ clg %r9,BASED(.Lcleanup_system_call_insn+24)
jh 0f
lg %r15,__LC_EXIT_TIMER
slg %r15,__LC_SYNC_ENTER_TIMER
alg %r15,__LC_USER_TIMER
stg %r15,__LC_USER_TIMER
0: # check if the system time update has been done
- clg %r9,BASED(cleanup_system_call_insn+32)
+ clg %r9,BASED(.Lcleanup_system_call_insn+32)
jh 0f
lg %r15,__LC_LAST_UPDATE_TIMER
slg %r15,__LC_EXIT_TIMER
@@ -904,21 +904,21 @@ cleanup_system_call:
# setup saved register r15
stg %r15,56(%r11) # r15 stack pointer
# set new psw address and exit
- larl %r9,sysc_do_svc
+ larl %r9,.Lsysc_do_svc
br %r14
-cleanup_system_call_insn:
+.Lcleanup_system_call_insn:
.quad system_call
- .quad sysc_stmg
- .quad sysc_per
- .quad sysc_vtime+18
- .quad sysc_vtime+42
+ .quad .Lsysc_stmg
+ .quad .Lsysc_per
+ .quad .Lsysc_vtime+18
+ .quad .Lsysc_vtime+42
-cleanup_sysc_tif:
- larl %r9,sysc_tif
+.Lcleanup_sysc_tif:
+ larl %r9,.Lsysc_tif
br %r14
-cleanup_sysc_restore:
- clg %r9,BASED(cleanup_sysc_restore_insn)
+.Lcleanup_sysc_restore:
+ clg %r9,BASED(.Lcleanup_sysc_restore_insn)
je 0f
lg %r9,24(%r11) # get saved pointer to pt_regs
mvc __LC_RETURN_PSW(16),__PT_PSW(%r9)
@@ -926,15 +926,15 @@ cleanup_sysc_restore:
lmg %r0,%r7,__PT_R0(%r9)
0: lmg %r8,%r9,__LC_RETURN_PSW
br %r14
-cleanup_sysc_restore_insn:
- .quad sysc_done - 4
+.Lcleanup_sysc_restore_insn:
+ .quad .Lsysc_done - 4
-cleanup_io_tif:
- larl %r9,io_tif
+.Lcleanup_io_tif:
+ larl %r9,.Lio_tif
br %r14
-cleanup_io_restore:
- clg %r9,BASED(cleanup_io_restore_insn)
+.Lcleanup_io_restore:
+ clg %r9,BASED(.Lcleanup_io_restore_insn)
je 0f
lg %r9,24(%r11) # get saved r11 pointer to pt_regs
mvc __LC_RETURN_PSW(16),__PT_PSW(%r9)
@@ -942,10 +942,10 @@ cleanup_io_restore:
lmg %r0,%r7,__PT_R0(%r9)
0: lmg %r8,%r9,__LC_RETURN_PSW
br %r14
-cleanup_io_restore_insn:
- .quad io_done - 4
+.Lcleanup_io_restore_insn:
+ .quad .Lio_done - 4
-cleanup_idle:
+.Lcleanup_idle:
# copy interrupt clock & cpu timer
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
@@ -954,7 +954,7 @@ cleanup_idle:
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
0: # check if stck & stpt have been executed
- clg %r9,BASED(cleanup_idle_insn)
+ clg %r9,BASED(.Lcleanup_idle_insn)
jhe 1f
mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2)
@@ -973,17 +973,17 @@ cleanup_idle:
nihh %r8,0xfcfd # clear irq & wait state bits
lg %r9,48(%r11) # return from psw_idle
br %r14
-cleanup_idle_insn:
- .quad psw_idle_lpsw
+.Lcleanup_idle_insn:
+ .quad .Lpsw_idle_lpsw
/*
* Integer constants
*/
.align 8
.Lcritical_start:
- .quad __critical_start
+ .quad .L__critical_start
.Lcritical_length:
- .quad __critical_end - __critical_start
+ .quad .L__critical_end - .L__critical_start
#if IS_ENABLED(CONFIG_KVM)
@@ -1000,25 +1000,25 @@ ENTRY(sie64a)
lmg %r0,%r13,0(%r3) # load guest gprs 0-13
lg %r14,__LC_GMAP # get gmap pointer
ltgr %r14,%r14
- jz sie_gmap
+ jz .Lsie_gmap
lctlg %c1,%c1,__GMAP_ASCE(%r14) # load primary asce
-sie_gmap:
+.Lsie_gmap:
lg %r14,__SF_EMPTY(%r15) # get control block pointer
oi __SIE_PROG0C+3(%r14),1 # we are going into SIE now
tm __SIE_PROG20+3(%r14),1 # last exit...
- jnz sie_done
+ jnz .Lsie_done
LPP __SF_EMPTY(%r15) # set guest id
sie 0(%r14)
-sie_done:
+.Lsie_done:
LPP __SF_EMPTY+16(%r15) # set host id
ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
# some program checks are suppressing. C code (e.g. do_protection_exception)
# will rewind the PSW by the ILC, which is 4 bytes in case of SIE. Other
-# instructions between sie64a and sie_done should not cause program
+# instructions between sie64a and .Lsie_done should not cause program
# interrupts. So lets use a nop (47 00 00 00) as a landing pad.
# See also HANDLE_SIE_INTERCEPT
-rewind_pad:
+.Lrewind_pad:
nop 0
.globl sie_exit
sie_exit:
@@ -1027,19 +1027,19 @@ sie_exit:
lmg %r6,%r14,__SF_GPRS(%r15) # restore kernel registers
lg %r2,__SF_EMPTY+24(%r15) # return exit reason code
br %r14
-sie_fault:
+.Lsie_fault:
lghi %r14,-EFAULT
stg %r14,__SF_EMPTY+24(%r15) # set exit reason code
j sie_exit
.align 8
.Lsie_critical:
- .quad sie_gmap
+ .quad .Lsie_gmap
.Lsie_critical_length:
- .quad sie_done - sie_gmap
+ .quad .Lsie_done - .Lsie_gmap
- EX_TABLE(rewind_pad,sie_fault)
- EX_TABLE(sie_exit,sie_fault)
+ EX_TABLE(.Lrewind_pad,.Lsie_fault)
+ EX_TABLE(sie_exit,.Lsie_fault)
#endif
.section .rodata, "a"
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index ca1cabb3a96c..b86bb8823f15 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -7,6 +7,7 @@
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
+#include <linux/moduleloader.h>
#include <linux/hardirq.h>
#include <linux/uaccess.h>
#include <linux/ftrace.h>
@@ -15,60 +16,39 @@
#include <linux/kprobes.h>
#include <trace/syscall.h>
#include <asm/asm-offsets.h>
+#include <asm/cacheflush.h>
#include "entry.h"
-void mcount_replace_code(void);
-void ftrace_disable_code(void);
-void ftrace_enable_insn(void);
-
/*
* The mcount code looks like this:
* stg %r14,8(%r15) # offset 0
* larl %r1,<&counter> # offset 6
* brasl %r14,_mcount # offset 12
* lg %r14,8(%r15) # offset 18
- * Total length is 24 bytes. The complete mcount block initially gets replaced
- * by ftrace_make_nop. Subsequent calls to ftrace_make_call / ftrace_make_nop
- * only patch the jg/lg instruction within the block.
- * Note: we do not patch the first instruction to an unconditional branch,
- * since that would break kprobes/jprobes. It is easier to leave the larl
- * instruction in and only modify the second instruction.
+ * Total length is 24 bytes. Only the first instruction will be patched
+ * by ftrace_make_call / ftrace_make_nop.
* The enabled ftrace code block looks like this:
- * larl %r0,.+24 # offset 0
- * > lg %r1,__LC_FTRACE_FUNC # offset 6
- * br %r1 # offset 12
- * brcl 0,0 # offset 14
- * brc 0,0 # offset 20
+ * > brasl %r0,ftrace_caller # offset 0
+ * larl %r1,<&counter> # offset 6
+ * brasl %r14,_mcount # offset 12
+ * lg %r14,8(%r15) # offset 18
* The ftrace function gets called with a non-standard C function call ABI
* where r0 contains the return address. It is also expected that the called
* function only clobbers r0 and r1, but restores r2-r15.
+ * For module code we can't directly jump to ftrace caller, but need a
+ * trampoline (ftrace_plt), which clobbers also r1.
* The return point of the ftrace function has offset 24, so execution
* continues behind the mcount block.
- * larl %r0,.+24 # offset 0
- * > jg .+18 # offset 6
- * br %r1 # offset 12
- * brcl 0,0 # offset 14
- * brc 0,0 # offset 20
+ * The disabled ftrace code block looks like this:
+ * > jg .+24 # offset 0
+ * larl %r1,<&counter> # offset 6
+ * brasl %r14,_mcount # offset 12
+ * lg %r14,8(%r15) # offset 18
* The jg instruction branches to offset 24 to skip as many instructions
* as possible.
*/
-asm(
- " .align 4\n"
- "mcount_replace_code:\n"
- " larl %r0,0f\n"
- "ftrace_disable_code:\n"
- " jg 0f\n"
- " br %r1\n"
- " brcl 0,0\n"
- " brc 0,0\n"
- "0:\n"
- " .align 4\n"
- "ftrace_enable_insn:\n"
- " lg %r1,"__stringify(__LC_FTRACE_FUNC)"\n");
-
-#define MCOUNT_BLOCK_SIZE 24
-#define MCOUNT_INSN_OFFSET 6
-#define FTRACE_INSN_SIZE 6
+
+unsigned long ftrace_plt;
int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
unsigned long addr)
@@ -79,24 +59,62 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long addr)
{
- /* Initial replacement of the whole mcount block */
- if (addr == MCOUNT_ADDR) {
- if (probe_kernel_write((void *) rec->ip - MCOUNT_INSN_OFFSET,
- mcount_replace_code,
- MCOUNT_BLOCK_SIZE))
- return -EPERM;
- return 0;
+ struct ftrace_insn insn;
+ unsigned short op;
+ void *from, *to;
+ size_t size;
+
+ ftrace_generate_nop_insn(&insn);
+ size = sizeof(insn);
+ from = &insn;
+ to = (void *) rec->ip;
+ if (probe_kernel_read(&op, (void *) rec->ip, sizeof(op)))
+ return -EFAULT;
+ /*
+ * If we find a breakpoint instruction, a kprobe has been placed
+ * at the beginning of the function. We write the constant
+ * KPROBE_ON_FTRACE_NOP into the remaining four bytes of the original
+ * instruction so that the kprobes handler can execute a nop, if it
+ * reaches this breakpoint.
+ */
+ if (op == BREAKPOINT_INSTRUCTION) {
+ size -= 2;
+ from += 2;
+ to += 2;
+ insn.disp = KPROBE_ON_FTRACE_NOP;
}
- if (probe_kernel_write((void *) rec->ip, ftrace_disable_code,
- MCOUNT_INSN_SIZE))
+ if (probe_kernel_write(to, from, size))
return -EPERM;
return 0;
}
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
- if (probe_kernel_write((void *) rec->ip, ftrace_enable_insn,
- FTRACE_INSN_SIZE))
+ struct ftrace_insn insn;
+ unsigned short op;
+ void *from, *to;
+ size_t size;
+
+ ftrace_generate_call_insn(&insn, rec->ip);
+ size = sizeof(insn);
+ from = &insn;
+ to = (void *) rec->ip;
+ if (probe_kernel_read(&op, (void *) rec->ip, sizeof(op)))
+ return -EFAULT;
+ /*
+ * If we find a breakpoint instruction, a kprobe has been placed
+ * at the beginning of the function. We write the constant
+ * KPROBE_ON_FTRACE_CALL into the remaining four bytes of the original
+ * instruction so that the kprobes handler can execute a brasl if it
+ * reaches this breakpoint.
+ */
+ if (op == BREAKPOINT_INSTRUCTION) {
+ size -= 2;
+ from += 2;
+ to += 2;
+ insn.disp = KPROBE_ON_FTRACE_CALL;
+ }
+ if (probe_kernel_write(to, from, size))
return -EPERM;
return 0;
}
@@ -111,13 +129,30 @@ int __init ftrace_dyn_arch_init(void)
return 0;
}
+static int __init ftrace_plt_init(void)
+{
+ unsigned int *ip;
+
+ ftrace_plt = (unsigned long) module_alloc(PAGE_SIZE);
+ if (!ftrace_plt)
+ panic("cannot allocate ftrace plt\n");
+ ip = (unsigned int *) ftrace_plt;
+ ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
+ ip[1] = 0x100a0004;
+ ip[2] = 0x07f10000;
+ ip[3] = FTRACE_ADDR >> 32;
+ ip[4] = FTRACE_ADDR & 0xffffffff;
+ set_memory_ro(ftrace_plt, 1);
+ return 0;
+}
+device_initcall(ftrace_plt_init);
+
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/*
* Hook the return address and push it in the stack of return addresses
* in current thread info.
*/
-unsigned long __kprobes prepare_ftrace_return(unsigned long parent,
- unsigned long ip)
+unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
{
struct ftrace_graph_ent trace;
@@ -137,6 +172,7 @@ unsigned long __kprobes prepare_ftrace_return(unsigned long parent,
out:
return parent;
}
+NOKPROBE_SYMBOL(prepare_ftrace_return);
/*
* Patch the kernel code at ftrace_graph_caller location. The instruction
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c
index 7559f1beab29..7a55c29b0b33 100644
--- a/arch/s390/kernel/idle.c
+++ b/arch/s390/kernel/idle.c
@@ -19,7 +19,7 @@
static DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
-void __kprobes enabled_wait(void)
+void enabled_wait(void)
{
struct s390_idle_data *idle = this_cpu_ptr(&s390_idle);
unsigned long long idle_time;
@@ -35,31 +35,32 @@ void __kprobes enabled_wait(void)
/* Call the assembler magic in entry.S */
psw_idle(idle, psw_mask);
+ trace_hardirqs_off();
+
/* Account time spent with enabled wait psw loaded as idle time. */
- idle->sequence++;
- smp_wmb();
+ write_seqcount_begin(&idle->seqcount);
idle_time = idle->clock_idle_exit - idle->clock_idle_enter;
idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
idle->idle_time += idle_time;
idle->idle_count++;
account_idle_time(idle_time);
- smp_wmb();
- idle->sequence++;
+ write_seqcount_end(&idle->seqcount);
}
+NOKPROBE_SYMBOL(enabled_wait);
static ssize_t show_idle_count(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
unsigned long long idle_count;
- unsigned int sequence;
+ unsigned int seq;
do {
- sequence = ACCESS_ONCE(idle->sequence);
+ seq = read_seqcount_begin(&idle->seqcount);
idle_count = ACCESS_ONCE(idle->idle_count);
if (ACCESS_ONCE(idle->clock_idle_enter))
idle_count++;
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ } while (read_seqcount_retry(&idle->seqcount, seq));
return sprintf(buf, "%llu\n", idle_count);
}
DEVICE_ATTR(idle_count, 0444, show_idle_count, NULL);
@@ -69,15 +70,15 @@ static ssize_t show_idle_time(struct device *dev,
{
struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
unsigned long long now, idle_time, idle_enter, idle_exit;
- unsigned int sequence;
+ unsigned int seq;
do {
now = get_tod_clock();
- sequence = ACCESS_ONCE(idle->sequence);
+ seq = read_seqcount_begin(&idle->seqcount);
idle_time = ACCESS_ONCE(idle->idle_time);
idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ } while (read_seqcount_retry(&idle->seqcount, seq));
idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
return sprintf(buf, "%llu\n", idle_time >> 12);
}
@@ -87,14 +88,14 @@ cputime64_t arch_cpu_idle_time(int cpu)
{
struct s390_idle_data *idle = &per_cpu(s390_idle, cpu);
unsigned long long now, idle_enter, idle_exit;
- unsigned int sequence;
+ unsigned int seq;
do {
now = get_tod_clock();
- sequence = ACCESS_ONCE(idle->sequence);
+ seq = read_seqcount_begin(&idle->seqcount);
idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ } while (read_seqcount_retry(&idle->seqcount, seq));
return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
}
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 1b8a38ab7861..f238720690f3 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -127,13 +127,10 @@ int show_interrupts(struct seq_file *p, void *v)
for_each_online_cpu(cpu)
seq_printf(p, "CPU%d ", cpu);
seq_putc(p, '\n');
- goto out;
}
if (index < NR_IRQS) {
if (index >= NR_IRQS_BASE)
goto out;
- /* Adjust index to process irqclass_main_desc array entries */
- index--;
seq_printf(p, "%s: ", irqclass_main_desc[index].name);
irq = irqclass_main_desc[index].irq;
for_each_online_cpu(cpu)
@@ -158,7 +155,7 @@ out:
unsigned int arch_dynirq_lower_bound(unsigned int from)
{
- return from < THIN_INTERRUPT ? THIN_INTERRUPT : from;
+ return from < NR_IRQS_BASE ? NR_IRQS_BASE : from;
}
/*
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 014d4729b134..1e4c710dfb92 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -29,6 +29,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/hardirq.h>
+#include <linux/ftrace.h>
#include <asm/cacheflush.h>
#include <asm/sections.h>
#include <asm/dis.h>
@@ -58,12 +59,23 @@ struct kprobe_insn_cache kprobe_dmainsn_slots = {
.insn_size = MAX_INSN_SIZE,
};
-static void __kprobes copy_instruction(struct kprobe *p)
+static void copy_instruction(struct kprobe *p)
{
+ unsigned long ip = (unsigned long) p->addr;
s64 disp, new_disp;
u64 addr, new_addr;
- memcpy(p->ainsn.insn, p->addr, insn_length(p->opcode >> 8));
+ if (ftrace_location(ip) == ip) {
+ /*
+ * If kprobes patches the instruction that is morphed by
+ * ftrace make sure that kprobes always sees the branch
+ * "jg .+24" that skips the mcount block
+ */
+ ftrace_generate_nop_insn((struct ftrace_insn *)p->ainsn.insn);
+ p->ainsn.is_ftrace_insn = 1;
+ } else
+ memcpy(p->ainsn.insn, p->addr, insn_length(*p->addr >> 8));
+ p->opcode = p->ainsn.insn[0];
if (!probe_is_insn_relative_long(p->ainsn.insn))
return;
/*
@@ -79,25 +91,14 @@ static void __kprobes copy_instruction(struct kprobe *p)
new_disp = ((addr + (disp * 2)) - new_addr) / 2;
*(s32 *)&p->ainsn.insn[1] = new_disp;
}
+NOKPROBE_SYMBOL(copy_instruction);
static inline int is_kernel_addr(void *addr)
{
return addr < (void *)_end;
}
-static inline int is_module_addr(void *addr)
-{
-#ifdef CONFIG_64BIT
- BUILD_BUG_ON(MODULES_LEN > (1UL << 31));
- if (addr < (void *)MODULES_VADDR)
- return 0;
- if (addr > (void *)MODULES_END)
- return 0;
-#endif
- return 1;
-}
-
-static int __kprobes s390_get_insn_slot(struct kprobe *p)
+static int s390_get_insn_slot(struct kprobe *p)
{
/*
* Get an insn slot that is within the same 2GB area like the original
@@ -111,8 +112,9 @@ static int __kprobes s390_get_insn_slot(struct kprobe *p)
p->ainsn.insn = get_insn_slot();
return p->ainsn.insn ? 0 : -ENOMEM;
}
+NOKPROBE_SYMBOL(s390_get_insn_slot);
-static void __kprobes s390_free_insn_slot(struct kprobe *p)
+static void s390_free_insn_slot(struct kprobe *p)
{
if (!p->ainsn.insn)
return;
@@ -122,8 +124,9 @@ static void __kprobes s390_free_insn_slot(struct kprobe *p)
free_insn_slot(p->ainsn.insn, 0);
p->ainsn.insn = NULL;
}
+NOKPROBE_SYMBOL(s390_free_insn_slot);
-int __kprobes arch_prepare_kprobe(struct kprobe *p)
+int arch_prepare_kprobe(struct kprobe *p)
{
if ((unsigned long) p->addr & 0x01)
return -EINVAL;
@@ -132,54 +135,79 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
return -EINVAL;
if (s390_get_insn_slot(p))
return -ENOMEM;
- p->opcode = *p->addr;
copy_instruction(p);
return 0;
}
+NOKPROBE_SYMBOL(arch_prepare_kprobe);
-struct ins_replace_args {
- kprobe_opcode_t *ptr;
- kprobe_opcode_t opcode;
+int arch_check_ftrace_location(struct kprobe *p)
+{
+ return 0;
+}
+
+struct swap_insn_args {
+ struct kprobe *p;
+ unsigned int arm_kprobe : 1;
};
-static int __kprobes swap_instruction(void *aref)
+static int swap_instruction(void *data)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
unsigned long status = kcb->kprobe_status;
- struct ins_replace_args *args = aref;
-
+ struct swap_insn_args *args = data;
+ struct ftrace_insn new_insn, *insn;
+ struct kprobe *p = args->p;
+ size_t len;
+
+ new_insn.opc = args->arm_kprobe ? BREAKPOINT_INSTRUCTION : p->opcode;
+ len = sizeof(new_insn.opc);
+ if (!p->ainsn.is_ftrace_insn)
+ goto skip_ftrace;
+ len = sizeof(new_insn);
+ insn = (struct ftrace_insn *) p->addr;
+ if (args->arm_kprobe) {
+ if (is_ftrace_nop(insn))
+ new_insn.disp = KPROBE_ON_FTRACE_NOP;
+ else
+ new_insn.disp = KPROBE_ON_FTRACE_CALL;
+ } else {
+ ftrace_generate_call_insn(&new_insn, (unsigned long)p->addr);
+ if (insn->disp == KPROBE_ON_FTRACE_NOP)
+ ftrace_generate_nop_insn(&new_insn);
+ }
+skip_ftrace:
kcb->kprobe_status = KPROBE_SWAP_INST;
- probe_kernel_write(args->ptr, &args->opcode, sizeof(args->opcode));
+ probe_kernel_write(p->addr, &new_insn, len);
kcb->kprobe_status = status;
return 0;
}
+NOKPROBE_SYMBOL(swap_instruction);
-void __kprobes arch_arm_kprobe(struct kprobe *p)
+void arch_arm_kprobe(struct kprobe *p)
{
- struct ins_replace_args args;
+ struct swap_insn_args args = {.p = p, .arm_kprobe = 1};
- args.ptr = p->addr;
- args.opcode = BREAKPOINT_INSTRUCTION;
stop_machine(swap_instruction, &args, NULL);
}
+NOKPROBE_SYMBOL(arch_arm_kprobe);
-void __kprobes arch_disarm_kprobe(struct kprobe *p)
+void arch_disarm_kprobe(struct kprobe *p)
{
- struct ins_replace_args args;
+ struct swap_insn_args args = {.p = p, .arm_kprobe = 0};
- args.ptr = p->addr;
- args.opcode = p->opcode;
stop_machine(swap_instruction, &args, NULL);
}
+NOKPROBE_SYMBOL(arch_disarm_kprobe);
-void __kprobes arch_remove_kprobe(struct kprobe *p)
+void arch_remove_kprobe(struct kprobe *p)
{
s390_free_insn_slot(p);
}
+NOKPROBE_SYMBOL(arch_remove_kprobe);
-static void __kprobes enable_singlestep(struct kprobe_ctlblk *kcb,
- struct pt_regs *regs,
- unsigned long ip)
+static void enable_singlestep(struct kprobe_ctlblk *kcb,
+ struct pt_regs *regs,
+ unsigned long ip)
{
struct per_regs per_kprobe;
@@ -199,10 +227,11 @@ static void __kprobes enable_singlestep(struct kprobe_ctlblk *kcb,
regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
regs->psw.addr = ip | PSW_ADDR_AMODE;
}
+NOKPROBE_SYMBOL(enable_singlestep);
-static void __kprobes disable_singlestep(struct kprobe_ctlblk *kcb,
- struct pt_regs *regs,
- unsigned long ip)
+static void disable_singlestep(struct kprobe_ctlblk *kcb,
+ struct pt_regs *regs,
+ unsigned long ip)
{
/* Restore control regs and psw mask, set new psw address */
__ctl_load(kcb->kprobe_saved_ctl, 9, 11);
@@ -210,41 +239,43 @@ static void __kprobes disable_singlestep(struct kprobe_ctlblk *kcb,
regs->psw.mask |= kcb->kprobe_saved_imask;
regs->psw.addr = ip | PSW_ADDR_AMODE;
}
+NOKPROBE_SYMBOL(disable_singlestep);
/*
* Activate a kprobe by storing its pointer to current_kprobe. The
* previous kprobe is stored in kcb->prev_kprobe. A stack of up to
* two kprobes can be active, see KPROBE_REENTER.
*/
-static void __kprobes push_kprobe(struct kprobe_ctlblk *kcb, struct kprobe *p)
+static void push_kprobe(struct kprobe_ctlblk *kcb, struct kprobe *p)
{
kcb->prev_kprobe.kp = __this_cpu_read(current_kprobe);
kcb->prev_kprobe.status = kcb->kprobe_status;
__this_cpu_write(current_kprobe, p);
}
+NOKPROBE_SYMBOL(push_kprobe);
/*
* Deactivate a kprobe by backing up to the previous state. If the
* current state is KPROBE_REENTER prev_kprobe.kp will be non-NULL,
* for any other state prev_kprobe.kp will be NULL.
*/
-static void __kprobes pop_kprobe(struct kprobe_ctlblk *kcb)
+static void pop_kprobe(struct kprobe_ctlblk *kcb)
{
__this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);
kcb->kprobe_status = kcb->prev_kprobe.status;
}
+NOKPROBE_SYMBOL(pop_kprobe);
-void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
- struct pt_regs *regs)
+void arch_prepare_kretprobe(struct kretprobe_instance *ri, struct pt_regs *regs)
{
ri->ret_addr = (kprobe_opcode_t *) regs->gprs[14];
/* Replace the return addr with trampoline addr */
regs->gprs[14] = (unsigned long) &kretprobe_trampoline;
}
+NOKPROBE_SYMBOL(arch_prepare_kretprobe);
-static void __kprobes kprobe_reenter_check(struct kprobe_ctlblk *kcb,
- struct kprobe *p)
+static void kprobe_reenter_check(struct kprobe_ctlblk *kcb, struct kprobe *p)
{
switch (kcb->kprobe_status) {
case KPROBE_HIT_SSDONE:
@@ -264,8 +295,9 @@ static void __kprobes kprobe_reenter_check(struct kprobe_ctlblk *kcb,
BUG();
}
}
+NOKPROBE_SYMBOL(kprobe_reenter_check);
-static int __kprobes kprobe_handler(struct pt_regs *regs)
+static int kprobe_handler(struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb;
struct kprobe *p;
@@ -339,6 +371,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
preempt_enable_no_resched();
return 0;
}
+NOKPROBE_SYMBOL(kprobe_handler);
/*
* Function return probe trampoline:
@@ -355,8 +388,7 @@ static void __used kretprobe_trampoline_holder(void)
/*
* Called when the probe at kretprobe trampoline is hit
*/
-static int __kprobes trampoline_probe_handler(struct kprobe *p,
- struct pt_regs *regs)
+static int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
{
struct kretprobe_instance *ri;
struct hlist_head *head, empty_rp;
@@ -444,6 +476,7 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
*/
return 1;
}
+NOKPROBE_SYMBOL(trampoline_probe_handler);
/*
* Called after single-stepping. p->addr is the address of the
@@ -453,12 +486,30 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
* single-stepped a copy of the instruction. The address of this
* copy is p->ainsn.insn.
*/
-static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
+static void resume_execution(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
unsigned long ip = regs->psw.addr & PSW_ADDR_INSN;
int fixup = probe_get_fixup_type(p->ainsn.insn);
+ /* Check if the kprobes location is an enabled ftrace caller */
+ if (p->ainsn.is_ftrace_insn) {
+ struct ftrace_insn *insn = (struct ftrace_insn *) p->addr;
+ struct ftrace_insn call_insn;
+
+ ftrace_generate_call_insn(&call_insn, (unsigned long) p->addr);
+ /*
+ * A kprobe on an enabled ftrace call site actually single
+ * stepped an unconditional branch (ftrace nop equivalent).
+ * Now we need to fixup things and pretend that a brasl r0,...
+ * was executed instead.
+ */
+ if (insn->disp == KPROBE_ON_FTRACE_CALL) {
+ ip += call_insn.disp * 2 - MCOUNT_INSN_SIZE;
+ regs->gprs[0] = (unsigned long)p->addr + sizeof(*insn);
+ }
+ }
+
if (fixup & FIXUP_PSW_NORMAL)
ip += (unsigned long) p->addr - (unsigned long) p->ainsn.insn;
@@ -476,8 +527,9 @@ static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
disable_singlestep(kcb, regs, ip);
}
+NOKPROBE_SYMBOL(resume_execution);
-static int __kprobes post_kprobe_handler(struct pt_regs *regs)
+static int post_kprobe_handler(struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
struct kprobe *p = kprobe_running();
@@ -504,8 +556,9 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs)
return 1;
}
+NOKPROBE_SYMBOL(post_kprobe_handler);
-static int __kprobes kprobe_trap_handler(struct pt_regs *regs, int trapnr)
+static int kprobe_trap_handler(struct pt_regs *regs, int trapnr)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
struct kprobe *p = kprobe_running();
@@ -567,8 +620,9 @@ static int __kprobes kprobe_trap_handler(struct pt_regs *regs, int trapnr)
}
return 0;
}
+NOKPROBE_SYMBOL(kprobe_trap_handler);
-int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
{
int ret;
@@ -579,12 +633,13 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
local_irq_restore(regs->psw.mask & ~PSW_MASK_PER);
return ret;
}
+NOKPROBE_SYMBOL(kprobe_fault_handler);
/*
* Wrapper routine to for handling exceptions.
*/
-int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
- unsigned long val, void *data)
+int kprobe_exceptions_notify(struct notifier_block *self,
+ unsigned long val, void *data)
{
struct die_args *args = (struct die_args *) data;
struct pt_regs *regs = args->regs;
@@ -616,8 +671,9 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
return ret;
}
+NOKPROBE_SYMBOL(kprobe_exceptions_notify);
-int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
{
struct jprobe *jp = container_of(p, struct jprobe, kp);
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -635,13 +691,15 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
memcpy(kcb->jprobes_stack, (void *) stack, MIN_STACK_SIZE(stack));
return 1;
}
+NOKPROBE_SYMBOL(setjmp_pre_handler);
-void __kprobes jprobe_return(void)
+void jprobe_return(void)
{
asm volatile(".word 0x0002");
}
+NOKPROBE_SYMBOL(jprobe_return);
-int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
unsigned long stack;
@@ -655,6 +713,7 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
preempt_enable_no_resched();
return 1;
}
+NOKPROBE_SYMBOL(longjmp_break_handler);
static struct kprobe trampoline = {
.addr = (kprobe_opcode_t *) &kretprobe_trampoline,
@@ -666,7 +725,8 @@ int __init arch_init_kprobes(void)
return register_kprobe(&trampoline);
}
-int __kprobes arch_trampoline_kprobe(struct kprobe *p)
+int arch_trampoline_kprobe(struct kprobe *p)
{
return p->addr == (kprobe_opcode_t *) &kretprobe_trampoline;
}
+NOKPROBE_SYMBOL(arch_trampoline_kprobe);
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 4300ea374826..b6dfc5bfcb89 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -27,6 +27,7 @@ ENTRY(ftrace_caller)
.globl ftrace_regs_caller
.set ftrace_regs_caller,ftrace_caller
lgr %r1,%r15
+ aghi %r0,MCOUNT_RETURN_FIXUP
aghi %r15,-STACK_FRAME_SIZE
stg %r1,__SF_BACKCHAIN(%r15)
stg %r1,(STACK_PTREGS_GPRS+15*8)(%r15)
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index dd1c24ceda50..3f51cf4e8f02 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -54,12 +54,8 @@ void s390_handle_mcck(void)
*/
local_irq_save(flags);
local_mcck_disable();
- /*
- * Ummm... Does this make sense at all? Copying the percpu struct
- * and then zapping it one statement later?
- */
- memcpy(&mcck, this_cpu_ptr(&cpu_mcck), sizeof(mcck));
- memset(&mcck, 0, sizeof(struct mcck_struct));
+ mcck = *this_cpu_ptr(&cpu_mcck);
+ memset(this_cpu_ptr(&cpu_mcck), 0, sizeof(mcck));
clear_cpu_flag(CIF_MCCK_PENDING);
local_mcck_enable();
local_irq_restore(flags);
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index b878f12a9597..c3f8d157cb0d 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -1383,7 +1383,6 @@ static int cpumsf_pmu_add(struct perf_event *event, int flags)
cpuhw->lsctl.ed = 1;
/* Set in_use flag and store event */
- event->hw.idx = 0; /* only one sampling event per CPU supported */
cpuhw->event = event;
cpuhw->flags |= PMU_F_IN_USE;
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index ed84cc224899..aa7a83948c7b 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -61,7 +61,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return sf->gprs[8];
}
-extern void __kprobes kernel_thread_starter(void);
+extern void kernel_thread_starter(void);
/*
* Free current thread data structures etc..
@@ -153,6 +153,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
save_fp_ctl(&p->thread.fp_regs.fpc);
save_fp_regs(p->thread.fp_regs.fprs);
p->thread.fp_regs.pad = 0;
+ p->thread.vxrs = NULL;
/* Set a new TLS ? */
if (clone_flags & CLONE_SETTLS) {
unsigned long tls = frame->childregs.gprs[6];
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 99a567b70d16..eabfb4594517 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -248,14 +248,27 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
*/
tmp = 0;
+ } else if (addr == (addr_t) &dummy->regs.fp_regs.fpc) {
+ /*
+ * floating point control reg. is in the thread structure
+ */
+ tmp = child->thread.fp_regs.fpc;
+ tmp <<= BITS_PER_LONG - 32;
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
- /*
- * floating point regs. are stored in the thread structure
+ /*
+ * floating point regs. are either in child->thread.fp_regs
+ * or the child->thread.vxrs array
*/
- offset = addr - (addr_t) &dummy->regs.fp_regs;
- tmp = *(addr_t *)((addr_t) &child->thread.fp_regs + offset);
- if (addr == (addr_t) &dummy->regs.fp_regs.fpc)
- tmp <<= BITS_PER_LONG - 32;
+ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
+#ifdef CONFIG_64BIT
+ if (child->thread.vxrs)
+ tmp = *(addr_t *)
+ ((addr_t) child->thread.vxrs + 2*offset);
+ else
+#endif
+ tmp = *(addr_t *)
+ ((addr_t) &child->thread.fp_regs.fprs + offset);
} else if (addr < (addr_t) (&dummy->regs.per_info + 1)) {
/*
@@ -383,16 +396,29 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
*/
return 0;
+ } else if (addr == (addr_t) &dummy->regs.fp_regs.fpc) {
+ /*
+ * floating point control reg. is in the thread structure
+ */
+ if ((unsigned int) data != 0 ||
+ test_fp_ctl(data >> (BITS_PER_LONG - 32)))
+ return -EINVAL;
+ child->thread.fp_regs.fpc = data >> (BITS_PER_LONG - 32);
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
- * floating point regs. are stored in the thread structure
+ * floating point regs. are either in child->thread.fp_regs
+ * or the child->thread.vxrs array
*/
- if (addr == (addr_t) &dummy->regs.fp_regs.fpc)
- if ((unsigned int) data != 0 ||
- test_fp_ctl(data >> (BITS_PER_LONG - 32)))
- return -EINVAL;
- offset = addr - (addr_t) &dummy->regs.fp_regs;
- *(addr_t *)((addr_t) &child->thread.fp_regs + offset) = data;
+ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
+#ifdef CONFIG_64BIT
+ if (child->thread.vxrs)
+ *(addr_t *)((addr_t)
+ child->thread.vxrs + 2*offset) = data;
+ else
+#endif
+ *(addr_t *)((addr_t)
+ &child->thread.fp_regs.fprs + offset) = data;
} else if (addr < (addr_t) (&dummy->regs.per_info + 1)) {
/*
@@ -611,12 +637,26 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
*/
tmp = 0;
+ } else if (addr == (addr_t) &dummy32->regs.fp_regs.fpc) {
+ /*
+ * floating point control reg. is in the thread structure
+ */
+ tmp = child->thread.fp_regs.fpc;
+
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
- * floating point regs. are stored in the thread structure
+ * floating point regs. are either in child->thread.fp_regs
+ * or the child->thread.vxrs array
*/
- offset = addr - (addr_t) &dummy32->regs.fp_regs;
- tmp = *(__u32 *)((addr_t) &child->thread.fp_regs + offset);
+ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
+#ifdef CONFIG_64BIT
+ if (child->thread.vxrs)
+ tmp = *(__u32 *)
+ ((addr_t) child->thread.vxrs + 2*offset);
+ else
+#endif
+ tmp = *(__u32 *)
+ ((addr_t) &child->thread.fp_regs.fprs + offset);
} else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) {
/*
@@ -722,15 +762,28 @@ static int __poke_user_compat(struct task_struct *child,
*/
return 0;
- } else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
+ } else if (addr == (addr_t) &dummy32->regs.fp_regs.fpc) {
/*
- * floating point regs. are stored in the thread structure
+ * floating point control reg. is in the thread structure
*/
- if (addr == (addr_t) &dummy32->regs.fp_regs.fpc &&
- test_fp_ctl(tmp))
+ if (test_fp_ctl(tmp))
return -EINVAL;
- offset = addr - (addr_t) &dummy32->regs.fp_regs;
- *(__u32 *)((addr_t) &child->thread.fp_regs + offset) = tmp;
+ child->thread.fp_regs.fpc = data;
+
+ } else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
+ /*
+ * floating point regs. are either in child->thread.fp_regs
+ * or the child->thread.vxrs array
+ */
+ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
+#ifdef CONFIG_64BIT
+ if (child->thread.vxrs)
+ *(__u32 *)((addr_t)
+ child->thread.vxrs + 2*offset) = tmp;
+ else
+#endif
+ *(__u32 *)((addr_t)
+ &child->thread.fp_regs.fprs + offset) = tmp;
} else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) {
/*
@@ -1038,12 +1091,6 @@ static int s390_tdb_set(struct task_struct *target,
return 0;
}
-static int s390_vxrs_active(struct task_struct *target,
- const struct user_regset *regset)
-{
- return !!target->thread.vxrs;
-}
-
static int s390_vxrs_low_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
@@ -1052,6 +1099,8 @@ static int s390_vxrs_low_get(struct task_struct *target,
__u64 vxrs[__NUM_VXRS_LOW];
int i;
+ if (!MACHINE_HAS_VX)
+ return -ENODEV;
if (target->thread.vxrs) {
if (target == current)
save_vx_regs(target->thread.vxrs);
@@ -1070,6 +1119,8 @@ static int s390_vxrs_low_set(struct task_struct *target,
__u64 vxrs[__NUM_VXRS_LOW];
int i, rc;
+ if (!MACHINE_HAS_VX)
+ return -ENODEV;
if (!target->thread.vxrs) {
rc = alloc_vector_registers(target);
if (rc)
@@ -1095,6 +1146,8 @@ static int s390_vxrs_high_get(struct task_struct *target,
{
__vector128 vxrs[__NUM_VXRS_HIGH];
+ if (!MACHINE_HAS_VX)
+ return -ENODEV;
if (target->thread.vxrs) {
if (target == current)
save_vx_regs(target->thread.vxrs);
@@ -1112,6 +1165,8 @@ static int s390_vxrs_high_set(struct task_struct *target,
{
int rc;
+ if (!MACHINE_HAS_VX)
+ return -ENODEV;
if (!target->thread.vxrs) {
rc = alloc_vector_registers(target);
if (rc)
@@ -1196,7 +1251,6 @@ static const struct user_regset s390_regsets[] = {
.n = __NUM_VXRS_LOW,
.size = sizeof(__u64),
.align = sizeof(__u64),
- .active = s390_vxrs_active,
.get = s390_vxrs_low_get,
.set = s390_vxrs_low_set,
},
@@ -1205,7 +1259,6 @@ static const struct user_regset s390_regsets[] = {
.n = __NUM_VXRS_HIGH,
.size = sizeof(__vector128),
.align = sizeof(__vector128),
- .active = s390_vxrs_active,
.get = s390_vxrs_high_get,
.set = s390_vxrs_high_set,
},
@@ -1419,7 +1472,6 @@ static const struct user_regset s390_compat_regsets[] = {
.n = __NUM_VXRS_LOW,
.size = sizeof(__u64),
.align = sizeof(__u64),
- .active = s390_vxrs_active,
.get = s390_vxrs_low_get,
.set = s390_vxrs_low_set,
},
@@ -1428,7 +1480,6 @@ static const struct user_regset s390_compat_regsets[] = {
.n = __NUM_VXRS_HIGH,
.size = sizeof(__vector128),
.align = sizeof(__vector128),
- .active = s390_vxrs_active,
.get = s390_vxrs_high_get,
.set = s390_vxrs_high_set,
},
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index e80d9ff9a56d..4e532c67832f 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -41,7 +41,6 @@
#include <linux/ctype.h>
#include <linux/reboot.h>
#include <linux/topology.h>
-#include <linux/ftrace.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <linux/memory.h>
@@ -356,7 +355,6 @@ static void __init setup_lowcore(void)
lc->steal_timer = S390_lowcore.steal_timer;
lc->last_update_timer = S390_lowcore.last_update_timer;
lc->last_update_clock = S390_lowcore.last_update_clock;
- lc->ftrace_func = S390_lowcore.ftrace_func;
restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0);
restart_stack += ASYNC_SIZE;
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 0c1a0ff0a558..6a2ac257d98f 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -371,7 +371,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
restorer = (unsigned long) ka->sa.sa_restorer | PSW_ADDR_AMODE;
} else {
/* Signal frame without vector registers are short ! */
- __u16 __user *svc = (void *) frame + frame_size - 2;
+ __u16 __user *svc = (void __user *) frame + frame_size - 2;
if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
restorer = (unsigned long) svc | PSW_ADDR_AMODE;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 6fd9e60101f1..0b499f5cbe19 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -236,7 +236,6 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
lc->percpu_offset = __per_cpu_offset[cpu];
lc->kernel_asce = S390_lowcore.kernel_asce;
lc->machine_flags = S390_lowcore.machine_flags;
- lc->ftrace_func = S390_lowcore.ftrace_func;
lc->user_timer = lc->system_timer = lc->steal_timer = 0;
__ctl_store(lc->cregs_save_area, 0, 15);
save_access_regs((unsigned int *) lc->access_regs_save_area);
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 9f7087fd58de..a2987243bc76 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -360,3 +360,5 @@ SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp)
SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom)
SYSCALL(sys_memfd_create,sys_memfd_create,compat_sys_memfd_create) /* 350 */
SYSCALL(sys_bpf,sys_bpf,compat_sys_bpf)
+SYSCALL(sys_ni_syscall,sys_s390_pci_mmio_write,compat_sys_s390_pci_mmio_write)
+SYSCALL(sys_ni_syscall,sys_s390_pci_mmio_read,compat_sys_s390_pci_mmio_read)
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 005d665fe4a5..20660dddb2d6 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -61,10 +61,11 @@ static DEFINE_PER_CPU(struct clock_event_device, comparators);
/*
* Scheduler clock - returns current time in nanosec units.
*/
-unsigned long long notrace __kprobes sched_clock(void)
+unsigned long long notrace sched_clock(void)
{
return tod_to_ns(get_tod_clock_monotonic());
}
+NOKPROBE_SYMBOL(sched_clock);
/*
* Monotonic_clock - returns # of nanoseconds passed since time_init()
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 9ff5ecba26ab..f081cf1157c3 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -49,7 +49,8 @@ static inline void report_user_fault(struct pt_regs *regs, int signr)
return;
if (!printk_ratelimit())
return;
- printk("User process fault: interruption code 0x%X ", regs->int_code);
+ printk("User process fault: interruption code %04x ilc:%d ",
+ regs->int_code & 0xffff, regs->int_code >> 17);
print_vma_addr("in ", regs->psw.addr & PSW_ADDR_INSN);
printk("\n");
show_regs(regs);
@@ -87,16 +88,16 @@ void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
}
}
-static void __kprobes do_trap(struct pt_regs *regs, int si_signo, int si_code,
- char *str)
+static void do_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
{
if (notify_die(DIE_TRAP, str, regs, 0,
regs->int_code, si_signo) == NOTIFY_STOP)
return;
do_report_trap(regs, si_signo, si_code, str);
}
+NOKPROBE_SYMBOL(do_trap);
-void __kprobes do_per_trap(struct pt_regs *regs)
+void do_per_trap(struct pt_regs *regs)
{
siginfo_t info;
@@ -111,6 +112,7 @@ void __kprobes do_per_trap(struct pt_regs *regs)
(void __force __user *) current->thread.per_event.address;
force_sig_info(SIGTRAP, &info, current);
}
+NOKPROBE_SYMBOL(do_per_trap);
void default_trap_handler(struct pt_regs *regs)
{
@@ -151,8 +153,6 @@ DO_ERROR_INFO(privileged_op, SIGILL, ILL_PRVOPC,
"privileged operation")
DO_ERROR_INFO(special_op_exception, SIGILL, ILL_ILLOPN,
"special operation exception")
-DO_ERROR_INFO(translation_exception, SIGILL, ILL_ILLOPN,
- "translation exception")
#ifdef CONFIG_64BIT
DO_ERROR_INFO(transaction_exception, SIGILL, ILL_ILLOPN,
@@ -179,7 +179,13 @@ static inline void do_fp_trap(struct pt_regs *regs, int fpc)
do_trap(regs, SIGFPE, si_code, "floating point exception");
}
-void __kprobes illegal_op(struct pt_regs *regs)
+void translation_exception(struct pt_regs *regs)
+{
+ /* May never happen. */
+ die(regs, "Translation exception");
+}
+
+void illegal_op(struct pt_regs *regs)
{
siginfo_t info;
__u8 opcode[6];
@@ -252,7 +258,7 @@ void __kprobes illegal_op(struct pt_regs *regs)
if (signal)
do_trap(regs, signal, ILL_ILLOPC, "illegal operation");
}
-
+NOKPROBE_SYMBOL(illegal_op);
#ifdef CONFIG_MATHEMU
void specification_exception(struct pt_regs *regs)
@@ -469,7 +475,7 @@ void space_switch_exception(struct pt_regs *regs)
do_trap(regs, SIGILL, ILL_PRVOPC, "space switch event");
}
-void __kprobes kernel_stack_overflow(struct pt_regs * regs)
+void kernel_stack_overflow(struct pt_regs *regs)
{
bust_spinlocks(1);
printk("Kernel stack overflow.\n");
@@ -477,6 +483,7 @@ void __kprobes kernel_stack_overflow(struct pt_regs * regs)
bust_spinlocks(0);
panic("Corrupt kernel stack, can't continue.");
}
+NOKPROBE_SYMBOL(kernel_stack_overflow);
void __init trap_init(void)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.