Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-misc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-misc: (28 commits)
  x86: section mismatch fixes, #3
  x86: section mismatch fixes, #2
  x86: pgtable_32.h - prototype and section mismatch fixes
  x86: unlock_ExtINT_logic() - fix section mismatch warnings
  x86: uniq_ioapic_id - fix section mismatch warning
  x86: trampoline_32.S - switch to .cpuinit.data
  x86: use get_bios_ebda()
  x86: remove duplicate get_bios_ebda() from rio.h
  x86: get_bios_ebda() requires asm/io.h
  x86: use cpumask function for present, possible, and online cpus
  x86: cleanup div_sc() usage
  x86: cleanup clocksource_hz2mult usage
  x86: remove unnecessary memset and NULL check after alloc_bootmem()
  x86: use bitmap library for pin_programmed
  x86: use MP_intsrc_info()
  x86: use BUILD_BUG_ON() for the size of struct intel_mp_floating
  x86_64 ia32 ptrace: convert to compat_arch_ptrace
  x86_64 ia32 ptrace: use compat_ptrace_request for siginfo
  x86 signals: lift set_fs
  x86 signals: lift flags diddling code
  ...

1 files changed, 15 insertions, 20 deletions

diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index f1b117930837..8e05e7f7bd40 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -413,16 +413,6 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 	regs->ss = __USER_DS;
 	regs->cs = __USER_CS;
 
-	/*
-	 * Clear TF when entering the signal handler, but
-	 * notify any tracer that was single-stepping it.
-	 * The tracer may want to single-step inside the
-	 * handler too.
-	 */
-	regs->flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_DF);
-	if (test_thread_flag(TIF_SINGLESTEP))
-		ptrace_notify(SIGTRAP);
-
 	return 0;
 
 give_sigsegv:
@@ -501,16 +491,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	regs->ss = __USER_DS;
 	regs->cs = __USER_CS;
 
-	/*
-	 * Clear TF when entering the signal handler, but
-	 * notify any tracer that was single-stepping it.
-	 * The tracer may want to single-step inside the
-	 * handler too.
-	 */
-	regs->flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_DF);
-	if (test_thread_flag(TIF_SINGLESTEP))
-		ptrace_notify(SIGTRAP);
-
 	return 0;
 
 give_sigsegv:
@@ -566,6 +546,21 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	if (ret)
 		return ret;
 
+	/*
+	 * Clear the direction flag as per the ABI for function entry.
+	 */
+	regs->flags &= ~X86_EFLAGS_DF;
+
+	/*
+	 * Clear TF when entering the signal handler, but
+	 * notify any tracer that was single-stepping it.
+	 * The tracer may want to single-step inside the
+	 * handler too.
+	 */
+	regs->flags &= ~X86_EFLAGS_TF;
+	if (test_thread_flag(TIF_SINGLESTEP))
+		ptrace_notify(SIGTRAP);
+
 	spin_lock_irq(&current->sighand->siglock);
 	sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
 	if (!(ka->sa.sa_flags & SA_NODEFER))