Merge remote-tracking branch 'regmap/fix/cache' into regmap-linus

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / kernel / signal_64.c

diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index c1794286098ca2f78c5e32f4c01b0891ca04fc78..345947367ec00a4fa440e162005864d9708eae6a 100644 (file)
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -154,11 +154,12 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
  * As above, but Transactional Memory is in use, so deliver sigcontexts
  * containing checkpointed and transactional register states.
  *
- * To do this, we treclaim to gather both sets of registers and set up the
- * 'normal' sigcontext registers with rolled-back register values such that a
- * simple signal handler sees a correct checkpointed register state.
- * If interested, a TM-aware sighandler can examine the transactional registers
- * in the 2nd sigcontext to determine the real origin of the signal.
+ * To do this, we treclaim (done before entering here) to gather both sets of
+ * registers and set up the 'normal' sigcontext registers with rolled-back
+ * register values such that a simple signal handler sees a correct
+ * checkpointed register state.  If interested, a TM-aware sighandler can
+ * examine the transactional registers in the 2nd sigcontext to determine the
+ * real origin of the signal.
  */
 static long setup_tm_sigcontexts(struct sigcontext __user *sc,
                                 struct sigcontext __user *tm_sc,
@@ -184,16 +185,6 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
 
        BUG_ON(!MSR_TM_ACTIVE(regs->msr));
 
-       /* tm_reclaim rolls back all reg states, saving checkpointed (older)
-        * GPRs to thread.ckpt_regs and (if used) FPRs to (newer)
-        * thread.transact_fp and/or VRs to (newer) thread.transact_vr.
-        * THEN we save out FP/VRs, if necessary, to the checkpointed (older)
-        * thread.fr[]/vr[]s.  The transactional (newer) GPRs are on the
-        * stack, in *regs.
-        */
-       tm_enable();
-       tm_reclaim(&current->thread, msr, TM_CAUSE_SIGNAL);
-
        flush_fp_to_thread(current);
 
 #ifdef CONFIG_ALTIVEC
@@ -711,7 +702,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
        unsigned long newsp = 0;
        long err = 0;
 
-       frame = get_sigframe(ka, regs, sizeof(*frame), 0);
+       frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 0);
        if (unlikely(frame == NULL))
                goto badframe;