Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

11 files changed, 138 insertions, 203 deletions

diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index b49d3b60bc0..f25e1da3fd0 100644
--- a/arch/sparc64/kernel/etrap.S
+++ b/arch/sparc64/kernel/etrap.S
@@ -27,11 +27,12 @@
 
 		.text		
 		.align	64
-		.globl	etrap, etrap_irq, etraptl1
+		.globl	etrap_syscall, etrap, etrap_irq, etraptl1
 etrap:		rdpr	%pil, %g2
-etrap_irq:
-		TRAP_LOAD_THREAD_REG(%g6, %g1)
+etrap_irq:	clr	%g3
+etrap_syscall:	TRAP_LOAD_THREAD_REG(%g6, %g1)
 		rdpr	%tstate, %g1
+		or	%g1, %g3, %g1
 		sllx	%g2, 20, %g3
 		andcc	%g1, TSTATE_PRIV, %g0
 		or	%g1, %g3, %g1
diff --git a/arch/sparc64/kernel/init_task.c b/arch/sparc64/kernel/init_task.c
index 90007cf88ba..d2b312381c1 100644
--- a/arch/sparc64/kernel/init_task.c
+++ b/arch/sparc64/kernel/init_task.c
@@ -10,7 +10,6 @@
 #include <asm/processor.h>
 
 static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
 struct mm_struct init_mm = INIT_MM(init_mm);
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 500ac6d483a..4129c044985 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -503,6 +503,8 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags,
 			      unsigned long stack_size)
 {
 	int __user *parent_tid_ptr, *child_tid_ptr;
+	unsigned long orig_i1 = regs->u_regs[UREG_I1];
+	long ret;
 
 #ifdef CONFIG_COMPAT
 	if (test_thread_flag(TIF_32BIT)) {
@@ -515,9 +517,19 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags,
 		child_tid_ptr = (int __user *) regs->u_regs[UREG_I4];
 	}
 
-	return do_fork(clone_flags, stack_start,
-		       regs, stack_size,
-		       parent_tid_ptr, child_tid_ptr);
+	ret = do_fork(clone_flags, stack_start,
+		      regs, stack_size,
+		      parent_tid_ptr, child_tid_ptr);
+
+	/* If we get an error and potentially restart the system
+	 * call, we're screwed because copy_thread() clobbered
+	 * the parent's %o1.  So detect that case and restore it
+	 * here.
+	 */
+	if ((unsigned long)ret >= -ERESTART_RESTARTBLOCK)
+		regs->u_regs[UREG_I1] = orig_i1;
+
+	return ret;
 }
 
 /* Copy a Sparc thread.  The fork() return value conventions
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index e9fc0aa2da3..f6c9fc92921 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -287,11 +287,11 @@ static int genregs64_set(struct task_struct *target,
 					 32 * sizeof(u64),
 					 33 * sizeof(u64));
 		if (!ret) {
-			/* Only the condition codes can be modified
-			 * in the %tstate register.
+			/* Only the condition codes and the "in syscall"
+			 * state can be modified in the %tstate register.
 			 */
-			tstate &= (TSTATE_ICC | TSTATE_XCC);
-			regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+			tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+			regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
 			regs->tstate |= tstate;
 		}
 	}
@@ -657,8 +657,10 @@ static int genregs32_set(struct task_struct *target,
 		switch (pos) {
 		case 32: /* PSR */
 			tstate = regs->tstate;
-			tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+			tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
 			tstate |= psr_to_tstate_icc(reg);
+			if (reg & PSR_SYSCALL)
+				tstate |= TSTATE_SYSCALL;
 			regs->tstate = tstate;
 			break;
 		case 33: /* PC */
@@ -944,6 +946,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 		break;
 
 	default:
+		if (request == PTRACE_SPARC_DETACH)
+			request = PTRACE_DETACH;
 		ret = compat_ptrace_request(child, request, addr, data);
 		break;
 	}
@@ -1036,6 +1040,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 
 	default:
+		if (request == PTRACE_SPARC_DETACH)
+			request = PTRACE_DETACH;
 		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index ecf6753b204..16689b2930d 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -46,7 +46,7 @@ __handle_user_windows:
 		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
 		ldx			[%g6 + TI_FLAGS], %l0
 
-1:		andcc			%l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+1:		andcc			%l0, _TIF_SIGPENDING, %g0
 		be,pt			%xcc, __handle_user_windows_continue
 		 nop
 		mov			%l5, %o1
@@ -86,7 +86,7 @@ __handle_perfctrs:
 		 wrpr			%g0, RTRAP_PSTATE, %pstate
 		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
 		ldx			[%g6 + TI_FLAGS], %l0
-1:		andcc			%l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+1:		andcc			%l0, _TIF_SIGPENDING, %g0
 
 		be,pt			%xcc, __handle_perfctrs_continue
 		 sethi			%hi(TSTATE_PEF), %o0
@@ -195,7 +195,7 @@ __handle_preemption_continue:
 		 andcc			%l1, %o0, %g0
 		andcc			%l0, _TIF_NEED_RESCHED, %g0
 		bne,pn			%xcc, __handle_preemption
-		 andcc			%l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+		 andcc			%l0, _TIF_SIGPENDING, %g0
 		bne,pn			%xcc, __handle_signal
 __handle_signal_continue:
 		 ldub			[%g6 + TI_WSAVED], %o2
@@ -257,6 +257,7 @@ rt_continue:	ldx			[%sp + PTREGS_OFF + PT_V9_G1], %g1
 		wr			%o3, %g0, %y
 		wrpr			%l4, 0x0, %pil
 		wrpr			%g0, 0x1, %tl
+		andn			%l1, TSTATE_SYSCALL, %l1
 		wrpr			%l1, %g0, %tstate
 		wrpr			%l2, %g0, %tpc
 		wrpr			%o2, %g0, %tnpc
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 45d6bf632da..6e4dc67d16a 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -247,7 +247,9 @@ static long _sigpause_common(old_sigset_t set)
 
 	current->state = TASK_INTERRUPTIBLE;
 	schedule();
-	set_thread_flag(TIF_RESTORE_SIGMASK);
+
+	set_restore_sigmask();
+
 	return -ERESTARTNOHAND;
 }
 
@@ -333,7 +335,7 @@ void do_rt_sigreturn(struct pt_regs *regs)
 	regs->tnpc = tnpc;
 
 	/* Prevent syscall restart.  */
-	pt_regs_clear_trap_type(regs);
+	pt_regs_clear_syscall(regs);
 
 	sigdelsetmask(&set, ~_BLOCKABLE);
 	spin_lock_irq(&current->sighand->siglock);
@@ -376,16 +378,29 @@ save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
 
 static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
 {
-	unsigned long sp;
+	unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
 
-	sp = regs->u_regs[UREG_FP] + STACK_BIAS;
+	/*
+	 * If we are on the alternate signal stack and would overflow it, don't.
+	 * Return an always-bogus address instead so we will die with SIGSEGV.
+	 */
+	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
+		return (void __user *) -1L;
 
 	/* This is the X/Open sanctioned signal stack switching.  */
 	if (ka->sa.sa_flags & SA_ONSTACK) {
-		if (!on_sig_stack(sp) &&
-		    !((current->sas_ss_sp + current->sas_ss_size) & 7))
+		if (sas_ss_flags(sp) == 0)
 			sp = current->sas_ss_sp + current->sas_ss_size;
 	}
+
+	/* Always align the stack frame.  This handles two cases.  First,
+	 * sigaltstack need not be mindful of platform specific stack
+	 * alignment.  Second, if we took this signal because the stack
+	 * is not aligned properly, we'd like to take the signal cleanly
+	 * and report that.
+	 */
+	sp &= ~7UL;
+
 	return (void __user *)(sp - framesize);
 }
 
@@ -486,7 +501,7 @@ static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
 }
 
 static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
-				     struct sigaction *sa)
+				   struct sigaction *sa)
 {
 	switch (regs->u_regs[UREG_I0]) {
 	case ERESTART_RESTARTBLOCK:
@@ -512,21 +527,19 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
  */
 static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
 {
-	struct signal_deliver_cookie cookie;
 	struct k_sigaction ka;
+	int restart_syscall;
 	sigset_t *oldset;
 	siginfo_t info;
 	int signr;
 	
 	if (pt_regs_is_syscall(regs) &&
 	    (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
-		pt_regs_clear_trap_type(regs);
-		cookie.restart_syscall = 1;
+		restart_syscall = 1;
 	} else
-		cookie.restart_syscall = 0;
-	cookie.orig_i0 = orig_i0;
+		restart_syscall = 0;
 
-	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK)
 		oldset = &current->saved_sigmask;
 	else
 		oldset = &current->blocked;
@@ -534,77 +547,62 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
 #ifdef CONFIG_COMPAT
 	if (test_thread_flag(TIF_32BIT)) {
 		extern void do_signal32(sigset_t *, struct pt_regs *,
-					struct signal_deliver_cookie *);
-		do_signal32(oldset, regs, &cookie);
+					int restart_syscall,
+					unsigned long orig_i0);
+		do_signal32(oldset, regs, restart_syscall, orig_i0);
 		return;
 	}
 #endif	
 
-	signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+	/* If the debugger messes with the program counter, it clears
+	 * the software "in syscall" bit, directing us to not perform
+	 * a syscall restart.
+	 */
+	if (restart_syscall && !pt_regs_is_syscall(regs))
+		restart_syscall = 0;
+
 	if (signr > 0) {
-		if (cookie.restart_syscall)
-			syscall_restart(cookie.orig_i0, regs, &ka.sa);
+		if (restart_syscall)
+			syscall_restart(orig_i0, regs, &ka.sa);
 		handle_signal(signr, &ka, &info, oldset, regs);
 
-		/* a signal was successfully delivered; the saved
+		/* A signal was successfully delivered; the saved
 		 * sigmask will have been stored in the signal frame,
 		 * and will be restored by sigreturn, so we can simply
-		 * clear the TIF_RESTORE_SIGMASK flag.
+		 * clear the TS_RESTORE_SIGMASK flag.
 		 */
-		if (test_thread_flag(TIF_RESTORE_SIGMASK))
-			clear_thread_flag(TIF_RESTORE_SIGMASK);
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
 		return;
 	}
-	if (cookie.restart_syscall &&
+	if (restart_syscall &&
 	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
 	     regs->u_regs[UREG_I0] == ERESTARTSYS ||
 	     regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
 		/* replay the system call when we are done */
-		regs->u_regs[UREG_I0] = cookie.orig_i0;
+		regs->u_regs[UREG_I0] = orig_i0;
 		regs->tpc -= 4;
 		regs->tnpc -= 4;
 	}
-	if (cookie.restart_syscall &&
+	if (restart_syscall &&
 	    regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
 		regs->u_regs[UREG_G1] = __NR_restart_syscall;
 		regs->tpc -= 4;
 		regs->tnpc -= 4;
 	}
 
-	/* if there's no signal to deliver, we just put the saved sigmask
+	/* If there's no signal to deliver, we just put the saved sigmask
 	 * back
 	 */
-	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-		clear_thread_flag(TIF_RESTORE_SIGMASK);
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
 		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
 	}
 }
 
 void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
 {
-	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+	if (thread_info_flags & _TIF_SIGPENDING)
 		do_signal(regs, orig_i0);
 }
-
-void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)
-{
-	struct signal_deliver_cookie *cp = cookie;
-
-	if (cp->restart_syscall &&
-	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
-	     regs->u_regs[UREG_I0] == ERESTARTSYS ||
-	     regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
-		/* replay the system call when we are done */
-		regs->u_regs[UREG_I0] = cp->orig_i0;
-		regs->tpc -= 4;
-		regs->tnpc -= 4;
-		cp->restart_syscall = 0;
-	}
-	if (cp->restart_syscall &&
-	    regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
-		regs->u_regs[UREG_G1] = __NR_restart_syscall;
-		regs->tpc -= 4;
-		regs->tnpc -= 4;
-		cp->restart_syscall = 0;
-	}
-}
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index 9415d2c918c..97cdd1bf4a1 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -269,7 +269,7 @@ void do_sigreturn32(struct pt_regs *regs)
 	regs->tstate |= psr_to_tstate_icc(psr);
 
 	/* Prevent syscall restart.  */
-	pt_regs_clear_trap_type(regs);
+	pt_regs_clear_syscall(regs);
 
 	err |= __get_user(fpu_save, &sf->fpu_save);
 	if (fpu_save)
@@ -355,7 +355,7 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
 	regs->tstate |= psr_to_tstate_icc(psr);
 
 	/* Prevent syscall restart.  */
-	pt_regs_clear_trap_type(regs);
+	pt_regs_clear_syscall(regs);
 
 	err |= __get_user(fpu_save, &sf->fpu_save);
 	if (fpu_save)
@@ -406,11 +406,27 @@ static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, uns
 	regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
 	sp = regs->u_regs[UREG_FP];
 	
+	/*
+	 * If we are on the alternate signal stack and would overflow it, don't.
+	 * Return an always-bogus address instead so we will die with SIGSEGV.
+	 */
+	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
+		return (void __user *) -1L;
+
 	/* This is the X/Open sanctioned signal stack switching.  */
 	if (sa->sa_flags & SA_ONSTACK) {
-		if (!on_sig_stack(sp) && !((current->sas_ss_sp + current->sas_ss_size) & 7))
+		if (sas_ss_flags(sp) == 0)
 			sp = current->sas_ss_sp + current->sas_ss_size;
 	}
+
+	/* Always align the stack frame.  This handles two cases.  First,
+	 * sigaltstack need not be mindful of platform specific stack
+	 * alignment.  Second, if we took this signal because the stack
+	 * is not aligned properly, we'd like to take the signal cleanly
+	 * and report that.
+	 */
+	sp &= ~7UL;
+
 	return (void __user *)(sp - framesize);
 }
 
@@ -752,48 +768,55 @@ static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs
  * mistake.
  */
 void do_signal32(sigset_t *oldset, struct pt_regs * regs,
-		 struct signal_deliver_cookie *cookie)
+		 int restart_syscall, unsigned long orig_i0)
 {
 	struct k_sigaction ka;
 	siginfo_t info;
 	int signr;
 	
-	signr = get_signal_to_deliver(&info, &ka, regs, cookie);
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+	/* If the debugger messes with the program counter, it clears
+	 * the "in syscall" bit, directing us to not perform a syscall
+	 * restart.
+	 */
+	if (restart_syscall && !pt_regs_is_syscall(regs))
+		restart_syscall = 0;
+
 	if (signr > 0) {
-		if (cookie->restart_syscall)
-			syscall_restart32(cookie->orig_i0, regs, &ka.sa);
+		if (restart_syscall)
+			syscall_restart32(orig_i0, regs, &ka.sa);
 		handle_signal32(signr, &ka, &info, oldset, regs);
 
-		/* a signal was successfully delivered; the saved
+		/* A signal was successfully delivered; the saved
 		 * sigmask will have been stored in the signal frame,
 		 * and will be restored by sigreturn, so we can simply
-		 * clear the TIF_RESTORE_SIGMASK flag.
+		 * clear the TS_RESTORE_SIGMASK flag.
 		 */
-		if (test_thread_flag(TIF_RESTORE_SIGMASK))
-			clear_thread_flag(TIF_RESTORE_SIGMASK);
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
 		return;
 	}
-	if (cookie->restart_syscall &&
+	if (restart_syscall &&
 	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
 	     regs->u_regs[UREG_I0] == ERESTARTSYS ||
 	     regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
 		/* replay the system call when we are done */
-		regs->u_regs[UREG_I0] = cookie->orig_i0;
+		regs->u_regs[UREG_I0] = orig_i0;
 		regs->tpc -= 4;
 		regs->tnpc -= 4;
 	}
-	if (cookie->restart_syscall &&
+	if (restart_syscall &&
 	    regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
 		regs->u_regs[UREG_G1] = __NR_restart_syscall;
 		regs->tpc -= 4;
 		regs->tnpc -= 4;
 	}
 
-	/* if there's no signal to deliver, we just put the saved sigmask
+	/* If there's no signal to deliver, we just put the saved sigmask
 	 * back
 	 */
-	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-		clear_thread_flag(TIF_RESTORE_SIGMASK);
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
 		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
 	}
 }
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 3aba47624df..0d6403a630a 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -865,21 +865,14 @@ void smp_call_function_client(int irq, struct pt_regs *regs)
 	void *info = call_data->info;
 
 	clear_softint(1 << irq);
-
-	irq_enter();
-
-	if (!call_data->wait) {
-		/* let initiator proceed after getting data */
-		atomic_inc(&call_data->finished);
-	}
-
-	func(info);
-
-	irq_exit();
-
 	if (call_data->wait) {
 		/* let initiator proceed only after completion */
+		func(info);
 		atomic_inc(&call_data->finished);
+	} else {
+		/* let initiator proceed after getting data */
+		atomic_inc(&call_data->finished);
+		func(info);
 	}
 }
 
@@ -1041,9 +1034,7 @@ void smp_receive_signal(int cpu)
 
 void smp_receive_signal_client(int irq, struct pt_regs *regs)
 {
-	irq_enter();
 	clear_softint(1 << irq);
-	irq_exit();
 }
 
 void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
@@ -1051,8 +1042,6 @@ void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
 	struct mm_struct *mm;
 	unsigned long flags;
 
-	irq_enter();
-
 	clear_softint(1 << irq);
 
 	/* See if we need to allocate a new TLB context because
@@ -1072,8 +1061,6 @@ void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
 	load_secondary_context(mm);
 	__flush_tlb_mm(CTX_HWBITS(mm->context),
 		       SECONDARY_CONTEXT);
-
-	irq_exit();
 }
 
 void smp_new_mmu_context_version(void)
@@ -1239,8 +1226,6 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
 {
 	clear_softint(1 << irq);
 
-	irq_enter();
-
 	preempt_disable();
 
 	__asm__ __volatile__("flushw");
@@ -1253,8 +1238,6 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
 	prom_world(0);
 
 	preempt_enable();
-
-	irq_exit();
 }
 
 /* /proc/profile writes can call this, don't __init it please. */
diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index 8d4761f15fa..ac1bff58c1a 100644
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -542,20 +542,19 @@ asmlinkage long sparc64_personality(unsigned long personality)
 	return ret;
 }
 
-int sparc64_mmap_check(unsigned long addr, unsigned long len,
-		unsigned long flags)
+int sparc64_mmap_check(unsigned long addr, unsigned long len)
 {
 	if (test_thread_flag(TIF_32BIT)) {
 		if (len >= STACK_TOP32)
 			return -EINVAL;
 
-		if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
+		if (addr > STACK_TOP32 - len)
 			return -EINVAL;
 	} else {
 		if (len >= VA_EXCLUDE_START)
 			return -EINVAL;
 
-		if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
+		if (invalid_64bit_range(addr, len))
 			return -EINVAL;
 	}
 
@@ -609,46 +608,19 @@ asmlinkage unsigned long sys64_mremap(unsigned long addr,
 	unsigned long old_len, unsigned long new_len,
 	unsigned long flags, unsigned long new_addr)
 {
-	struct vm_area_struct *vma;
 	unsigned long ret = -EINVAL;
 
 	if (test_thread_flag(TIF_32BIT))
 		goto out;
 	if (unlikely(new_len >= VA_EXCLUDE_START))
 		goto out;
-	if (unlikely(invalid_64bit_range(addr, old_len)))
+	if (unlikely(sparc64_mmap_check(addr, old_len)))
+		goto out;
+	if (unlikely(sparc64_mmap_check(new_addr, new_len)))
 		goto out;
 
 	down_write(&current->mm->mmap_sem);
-	if (flags & MREMAP_FIXED) {
-		if (invalid_64bit_range(new_addr, new_len))
-			goto out_sem;
-	} else if (invalid_64bit_range(addr, new_len)) {
-		unsigned long map_flags = 0;
-		struct file *file = NULL;
-
-		ret = -ENOMEM;
-		if (!(flags & MREMAP_MAYMOVE))
-			goto out_sem;
-
-		vma = find_vma(current->mm, addr);
-		if (vma) {
-			if (vma->vm_flags & VM_SHARED)
-				map_flags |= MAP_SHARED;
-			file = vma->vm_file;
-		}
-
-		/* MREMAP_FIXED checked above. */
-		new_addr = get_unmapped_area(file, addr, new_len,
-				    vma ? vma->vm_pgoff : 0,
-				    map_flags);
-		ret = new_addr;
-		if (new_addr & ~PAGE_MASK)
-			goto out_sem;
-		flags |= MREMAP_FIXED;
-	}
 	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
 	up_write(&current->mm->mmap_sem);
 out:
 	return ret;       
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index 161ce4710fe..ba5bd626b39 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -236,13 +236,6 @@ asmlinkage long sys32_getegid16(void)
 
 /* 32-bit timeval and related flotsam.  */
 
-static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
-{
-	return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
-		(__get_user(o->tv_sec, &i->tv_sec) |
-		 __get_user(o->tv_usec, &i->tv_usec)));
-}
-
 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
 {
 	return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
@@ -757,30 +750,6 @@ asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
 	return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
 }
 
-asmlinkage long sys32_utimes(char __user *filename,
-			     struct compat_timeval __user *tvs)
-{
-	struct timespec tv[2];
-
-	if (tvs) {
-		struct timeval ktvs[2];
-		if (get_tv32(&ktvs[0], tvs) ||
-		    get_tv32(&ktvs[1], 1+tvs))
-			return -EFAULT;
-
-		if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
-		    ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
-			return -EINVAL;
-
-		tv[0].tv_sec = ktvs[0].tv_sec;
-		tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
-		tv[1].tv_sec = ktvs[1].tv_sec;
-		tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
-	}
-
-	return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
-}
-
 /* These are here just in case some old sparc32 binary calls it. */
 asmlinkage long sys32_pause(void)
 {
@@ -898,44 +867,15 @@ asmlinkage unsigned long sys32_mremap(unsigned long addr,
 	unsigned long old_len, unsigned long new_len,
 	unsigned long flags, u32 __new_addr)
 {
-	struct vm_area_struct *vma;
 	unsigned long ret = -EINVAL;
 	unsigned long new_addr = __new_addr;
 
-	if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
+	if (unlikely(sparc64_mmap_check(addr, old_len)))
 		goto out;
-	if (addr > STACK_TOP32 - old_len)
+	if (unlikely(sparc64_mmap_check(new_addr, new_len)))
 		goto out;
 	down_write(&current->mm->mmap_sem);
-	if (flags & MREMAP_FIXED) {
-		if (new_addr > STACK_TOP32 - new_len)
-			goto out_sem;
-	} else if (addr > STACK_TOP32 - new_len) {
-		unsigned long map_flags = 0;
-		struct file *file = NULL;
-
-		ret = -ENOMEM;
-		if (!(flags & MREMAP_MAYMOVE))
-			goto out_sem;
-
-		vma = find_vma(current->mm, addr);
-		if (vma) {
-			if (vma->vm_flags & VM_SHARED)
-				map_flags |= MAP_SHARED;
-			file = vma->vm_file;
-		}
-
-		/* MREMAP_FIXED checked above. */
-		new_addr = get_unmapped_area(file, addr, new_len,
-				    vma ? vma->vm_pgoff : 0,
-				    map_flags);
-		ret = new_addr;
-		if (new_addr & ~PAGE_MASK)
-			goto out_sem;
-		flags |= MREMAP_FIXED;
-	}
 	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
 	up_write(&current->mm->mmap_sem);
 out:
 	return ret;       
diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index a4fef2ba1ae..8b5282d433c 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -45,7 +45,7 @@ sys_call_table32:
 /*120*/	.word compat_sys_readv, compat_sys_writev, sys32_settimeofday, sys32_fchown16, sys_fchmod
 	.word sys_nis_syscall, sys32_setreuid16, sys32_setregid16, sys_rename, sys_truncate
 /*130*/	.word sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall
-	.word sys_nis_syscall, sys32_mkdir, sys_rmdir, sys32_utimes, compat_sys_stat64
+	.word sys_nis_syscall, sys32_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64
 /*140*/	.word sys32_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
 	.word compat_sys_setrlimit, sys_pivot_root, sys32_prctl, sys_pciconfig_read, sys_pciconfig_write
 /*150*/	.word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64