s390: remove all usages of PSW_ADDR_INSN

Yet another leftover from the 31 bit era. The usual operation
"y = x & PSW_ADDR_INSN" with the PSW_ADDR_INSN mask is a nop for
CONFIG_64BIT.

Therefore remove all usages and hope the code is a bit less confusing.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>

arch/s390/include/asm/ptrace.h

@@ -149,7 +149,7 @@ static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
 #define arch_has_block_step()	(1)
 
 #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
-#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
+#define instruction_pointer(regs) ((regs)->psw.addr)
 #define user_stack_pointer(regs)((regs)->gprs[15])
 #define profile_pc(regs) instruction_pointer(regs)
 
@@ -171,7 +171,7 @@ unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
 
 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
 {
-	return regs->gprs[15] & PSW_ADDR_INSN;
+	return regs->gprs[15];
 }
 
 #endif /* __ASSEMBLY__ */

arch/s390/kernel/debug.c

@@ -1470,7 +1470,7 @@ debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
 		except_str = "*";
 	else
 		except_str = "-";
-	caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
+	caller = (unsigned long) entry->caller;
 	rc += sprintf(out_buf, "%02i %011lld:%06lu %1u %1s %02i %p  ",
 		      area, (long long)time_spec.tv_sec,
 		      time_spec.tv_nsec / 1000, level, except_str,

arch/s390/kernel/dumpstack.c

@@ -34,22 +34,21 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
 	unsigned long addr;
 
 	while (1) {
-		sp = sp & PSW_ADDR_INSN;
 		if (sp < low || sp > high - sizeof(*sf))
 			return sp;
 		sf = (struct stack_frame *) sp;
-		addr = sf->gprs[8] & PSW_ADDR_INSN;
+		addr = sf->gprs[8];
 		printk("([<%016lx>] %pSR)\n", addr, (void *)addr);
 		/* Follow the backchain. */
 		while (1) {
 			low = sp;
-			sp = sf->back_chain & PSW_ADDR_INSN;
+			sp = sf->back_chain;
 			if (!sp)
 				break;
 			if (sp <= low || sp > high - sizeof(*sf))
 				return sp;
 			sf = (struct stack_frame *) sp;
-			addr = sf->gprs[8] & PSW_ADDR_INSN;
+			addr = sf->gprs[8];
 			printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
 		}
 		/* Zero backchain detected, check for interrupt frame. */
@@ -57,7 +56,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
 		if (sp <= low || sp > high - sizeof(*regs))
 			return sp;
 		regs = (struct pt_regs *) sp;
-		addr = regs->psw.addr & PSW_ADDR_INSN;
+		addr = regs->psw.addr;
 		printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
 		low = sp;
 		sp = regs->gprs[15];

arch/s390/kernel/early.c

@@ -252,7 +252,7 @@ static void early_pgm_check_handler(void)
 	unsigned long addr;
 
 	addr = S390_lowcore.program_old_psw.addr;
-	fixup = search_exception_tables(addr & PSW_ADDR_INSN);
+	fixup = search_exception_tables(addr);
 	if (!fixup)
 		disabled_wait(0);
 	/* Disable low address protection before storing into lowcore. */

arch/s390/kernel/ftrace.c

@@ -203,7 +203,7 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
 		goto out;
 	if (unlikely(atomic_read(&current->tracing_graph_pause)))
 		goto out;
-	ip = (ip & PSW_ADDR_INSN) - MCOUNT_INSN_SIZE;
+	ip -= MCOUNT_INSN_SIZE;
 	trace.func = ip;
 	trace.depth = current->curr_ret_stack + 1;
 	/* Only trace if the calling function expects to. */

arch/s390/kernel/kprobes.c

@@ -310,7 +310,7 @@ static int kprobe_handler(struct pt_regs *regs)
 	 */
 	preempt_disable();
 	kcb = get_kprobe_ctlblk();
-	p = get_kprobe((void *)((regs->psw.addr & PSW_ADDR_INSN) - 2));
+	p = get_kprobe((void *)(regs->psw.addr - 2));
 
 	if (p) {
 		if (kprobe_running()) {
@@ -490,7 +490,7 @@ NOKPROBE_SYMBOL(trampoline_probe_handler);
 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;
+	unsigned long ip = regs->psw.addr;
 	int fixup = probe_get_fixup_type(p->ainsn.insn);
 
 	/* Check if the kprobes location is an enabled ftrace caller */
@@ -605,7 +605,7 @@ static int kprobe_trap_handler(struct pt_regs *regs, int trapnr)
 		 * In case the user-specified fault handler returned
 		 * zero, try to fix up.
 		 */
-		entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+		entry = search_exception_tables(regs->psw.addr);
 		if (entry) {
 			regs->psw.addr = extable_fixup(entry);
 			return 1;

arch/s390/kernel/perf_event.c

@@ -74,7 +74,7 @@ static unsigned long guest_is_user_mode(struct pt_regs *regs)
 
 static unsigned long instruction_pointer_guest(struct pt_regs *regs)
 {
-	return sie_block(regs)->gpsw.addr & PSW_ADDR_INSN;
+	return sie_block(regs)->gpsw.addr;
 }
 
 unsigned long perf_instruction_pointer(struct pt_regs *regs)
@@ -231,29 +231,27 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry,
 	struct pt_regs *regs;
 
 	while (1) {
-		sp = sp & PSW_ADDR_INSN;
 		if (sp < low || sp > high - sizeof(*sf))
 			return sp;
 		sf = (struct stack_frame *) sp;
-		perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
+		perf_callchain_store(entry, sf->gprs[8]);
 		/* Follow the backchain. */
 		while (1) {
 			low = sp;
-			sp = sf->back_chain & PSW_ADDR_INSN;
+			sp = sf->back_chain;
 			if (!sp)
 				break;
 			if (sp <= low || sp > high - sizeof(*sf))
 				return sp;
 			sf = (struct stack_frame *) sp;
-			perf_callchain_store(entry,
-					     sf->gprs[8] & PSW_ADDR_INSN);
+			perf_callchain_store(entry, sf->gprs[8]);
 		}
 		/* Zero backchain detected, check for interrupt frame. */
 		sp = (unsigned long) (sf + 1);
 		if (sp <= low || sp > high - sizeof(*regs))
 			return sp;
 		regs = (struct pt_regs *) sp;
-		perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
+		perf_callchain_store(entry, sf->gprs[8]);
 		low = sp;
 		sp = regs->gprs[15];
 	}

arch/s390/kernel/process.c

@@ -56,10 +56,10 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
 		return 0;
 	low = task_stack_page(tsk);
 	high = (struct stack_frame *) task_pt_regs(tsk);
-	sf = (struct stack_frame *) (tsk->thread.ksp & PSW_ADDR_INSN);
+	sf = (struct stack_frame *) tsk->thread.ksp;
 	if (sf <= low || sf > high)
 		return 0;
-	sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
+	sf = (struct stack_frame *) sf->back_chain;
 	if (sf <= low || sf > high)
 		return 0;
 	return sf->gprs[8];
@@ -220,14 +220,14 @@ unsigned long get_wchan(struct task_struct *p)
 		return 0;
 	low = task_stack_page(p);
 	high = (struct stack_frame *) task_pt_regs(p);
-	sf = (struct stack_frame *) (p->thread.ksp & PSW_ADDR_INSN);
+	sf = (struct stack_frame *) p->thread.ksp;
 	if (sf <= low || sf > high)
 		return 0;
 	for (count = 0; count < 16; count++) {
-		sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
+		sf = (struct stack_frame *) sf->back_chain;
 		if (sf <= low || sf > high)
 			return 0;
-		return_address = sf->gprs[8] & PSW_ADDR_INSN;
+		return_address = sf->gprs[8];
 		if (!in_sched_functions(return_address))
 			return return_address;
 	}

arch/s390/kernel/ptrace.c

@@ -84,7 +84,7 @@ void update_cr_regs(struct task_struct *task)
 		if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
 			new.control |= PER_EVENT_IFETCH;
 		new.start = 0;
-		new.end = PSW_ADDR_INSN;
+		new.end = -1UL;
 	}
 
 	/* Take care of the PER enablement bit in the PSW. */
@@ -148,7 +148,7 @@ static inline unsigned long __peek_user_per(struct task_struct *child,
 	else if (addr == (addr_t) &dummy->cr11)
 		/* End address of the active per set. */
 		return test_thread_flag(TIF_SINGLE_STEP) ?
-			PSW_ADDR_INSN : child->thread.per_user.end;
+			-1UL : child->thread.per_user.end;
 	else if (addr == (addr_t) &dummy->bits)
 		/* Single-step bit. */
 		return test_thread_flag(TIF_SINGLE_STEP) ?
@@ -495,8 +495,6 @@ long arch_ptrace(struct task_struct *child, long request,
 		}
 		return 0;
 	default:
-		/* Removing high order bit from addr (only for 31 bit). */
-		addr &= PSW_ADDR_INSN;
 		return ptrace_request(child, request, addr, data);
 	}
 }

arch/s390/kernel/stacktrace.c

@@ -21,12 +21,11 @@ static unsigned long save_context_stack(struct stack_trace *trace,
 	unsigned long addr;
 
 	while(1) {
-		sp &= PSW_ADDR_INSN;
 		if (sp < low || sp > high)
 			return sp;
 		sf = (struct stack_frame *)sp;
 		while(1) {
-			addr = sf->gprs[8] & PSW_ADDR_INSN;
+			addr = sf->gprs[8];
 			if (!trace->skip)
 				trace->entries[trace->nr_entries++] = addr;
 			else
@@ -34,7 +33,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
 			if (trace->nr_entries >= trace->max_entries)
 				return sp;
 			low = sp;
-			sp = sf->back_chain & PSW_ADDR_INSN;
+			sp = sf->back_chain;
 			if (!sp)
 				break;
 			if (sp <= low || sp > high - sizeof(*sf))
@@ -46,7 +45,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
 		if (sp <= low || sp > high - sizeof(*regs))
 			return sp;
 		regs = (struct pt_regs *)sp;
-		addr = regs->psw.addr & PSW_ADDR_INSN;
+		addr = regs->psw.addr;
 		if (savesched || !in_sched_functions(addr)) {
 			if (!trace->skip)
 				trace->entries[trace->nr_entries++] = addr;
@@ -65,7 +64,7 @@ void save_stack_trace(struct stack_trace *trace)
 	register unsigned long sp asm ("15");
 	unsigned long orig_sp, new_sp;
 
-	orig_sp = sp & PSW_ADDR_INSN;
+	orig_sp = sp;
 	new_sp = save_context_stack(trace, orig_sp,
 				    S390_lowcore.panic_stack - PAGE_SIZE,
 				    S390_lowcore.panic_stack, 1);
@@ -86,7 +85,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
 {
 	unsigned long sp, low, high;
 
-	sp = tsk->thread.ksp & PSW_ADDR_INSN;
+	sp = tsk->thread.ksp;
 	low = (unsigned long) task_stack_page(tsk);
 	high = (unsigned long) task_pt_regs(tsk);
 	save_context_stack(trace, sp, low, high, 0);

arch/s390/kernel/traps.c

@@ -32,8 +32,7 @@ static inline void __user *get_trap_ip(struct pt_regs *regs)
 		address = *(unsigned long *)(current->thread.trap_tdb + 24);
 	else
 		address = regs->psw.addr;
-	return (void __user *)
-		((address - (regs->int_code >> 16)) & PSW_ADDR_INSN);
+	return (void __user *) (address - (regs->int_code >> 16));
 }
 
 static inline void report_user_fault(struct pt_regs *regs, int signr)
@@ -46,7 +45,7 @@ static inline void report_user_fault(struct pt_regs *regs, int signr)
 		return;
 	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);
+	print_vma_addr("in ", regs->psw.addr);
 	printk("\n");
 	show_regs(regs);
 }
@@ -69,13 +68,13 @@ void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
 		report_user_fault(regs, si_signo);
         } else {
                 const struct exception_table_entry *fixup;
-                fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+		fixup = search_exception_tables(regs->psw.addr);
                 if (fixup)
 			regs->psw.addr = extable_fixup(fixup);
 		else {
 			enum bug_trap_type btt;
 
-			btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
+			btt = report_bug(regs->psw.addr, regs);
 			if (btt == BUG_TRAP_TYPE_WARN)
 				return;
 			die(regs, str);

arch/s390/kvm/guestdbg.c

@@ -116,7 +116,7 @@ static void enable_all_hw_wp(struct kvm_vcpu *vcpu)
 	if (*cr9 & PER_EVENT_STORE && *cr9 & PER_CONTROL_ALTERATION) {
 		*cr9 &= ~PER_CONTROL_ALTERATION;
 		*cr10 = 0;
-		*cr11 = PSW_ADDR_INSN;
+		*cr11 = -1UL;
 	} else {
 		*cr9 &= ~PER_CONTROL_ALTERATION;
 		*cr9 |= PER_EVENT_STORE;
@@ -159,7 +159,7 @@ void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu)
 		vcpu->arch.sie_block->gcr[0] &= ~0x800ul;
 		vcpu->arch.sie_block->gcr[9] |= PER_EVENT_IFETCH;
 		vcpu->arch.sie_block->gcr[10] = 0;
-		vcpu->arch.sie_block->gcr[11] = PSW_ADDR_INSN;
+		vcpu->arch.sie_block->gcr[11] = -1UL;
 	}
 
 	if (guestdbg_hw_bp_enabled(vcpu)) {

arch/s390/mm/fault.c

@@ -228,7 +228,7 @@ static inline void report_user_fault(struct pt_regs *regs, long signr)
 		return;
 	printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d ",
 	       regs->int_code & 0xffff, regs->int_code >> 17);
-	print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
+	print_vma_addr(KERN_CONT "in ", regs->psw.addr);
 	printk(KERN_CONT "\n");
 	printk(KERN_ALERT "failing address: %016lx TEID: %016lx\n",
 	       regs->int_parm_long & __FAIL_ADDR_MASK, regs->int_parm_long);
@@ -256,7 +256,7 @@ static noinline void do_no_context(struct pt_regs *regs)
 	const struct exception_table_entry *fixup;
 
 	/* Are we prepared to handle this kernel fault?  */
-	fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+	fixup = search_exception_tables(regs->psw.addr);
 	if (fixup) {
 		regs->psw.addr = extable_fixup(fixup);
 		return;

arch/s390/oprofile/backtrace.c

@@ -16,24 +16,23 @@ __show_trace(unsigned int *depth, unsigned long sp,
 	struct pt_regs *regs;
 
 	while (*depth) {
-		sp = sp & PSW_ADDR_INSN;
 		if (sp < low || sp > high - sizeof(*sf))
 			return sp;
 		sf = (struct stack_frame *) sp;
 		(*depth)--;
-		oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
+		oprofile_add_trace(sf->gprs[8]);
 
 		/* Follow the backchain.  */
 		while (*depth) {
 			low = sp;
-			sp = sf->back_chain & PSW_ADDR_INSN;
+			sp = sf->back_chain;
 			if (!sp)
 				break;
 			if (sp <= low || sp > high - sizeof(*sf))
 				return sp;
 			sf = (struct stack_frame *) sp;
 			(*depth)--;
-			oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
+			oprofile_add_trace(sf->gprs[8]);
 
 		}
 
@@ -46,7 +45,7 @@ __show_trace(unsigned int *depth, unsigned long sp,
 			return sp;
 		regs = (struct pt_regs *) sp;
 		(*depth)--;
-		oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
+		oprofile_add_trace(sf->gprs[8]);
 		low = sp;
 		sp = regs->gprs[15];
 	}