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Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
-rw-r--r--arch/powerpc/kernel/signal_64.c23
1 files changed, 7 insertions, 16 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index c1794286098c..345947367ec0 100644
--- 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,
154 * As above, but Transactional Memory is in use, so deliver sigcontexts 154 * As above, but Transactional Memory is in use, so deliver sigcontexts
155 * containing checkpointed and transactional register states. 155 * containing checkpointed and transactional register states.
156 * 156 *
157 * To do this, we treclaim to gather both sets of registers and set up the 157 * To do this, we treclaim (done before entering here) to gather both sets of
158 * 'normal' sigcontext registers with rolled-back register values such that a 158 * registers and set up the 'normal' sigcontext registers with rolled-back
159 * simple signal handler sees a correct checkpointed register state. 159 * register values such that a simple signal handler sees a correct
160 * If interested, a TM-aware sighandler can examine the transactional registers 160 * checkpointed register state. If interested, a TM-aware sighandler can
161 * in the 2nd sigcontext to determine the real origin of the signal. 161 * examine the transactional registers in the 2nd sigcontext to determine the
162 * real origin of the signal.
162 */ 163 */
163static long setup_tm_sigcontexts(struct sigcontext __user *sc, 164static long setup_tm_sigcontexts(struct sigcontext __user *sc,
164 struct sigcontext __user *tm_sc, 165 struct sigcontext __user *tm_sc,
@@ -184,16 +185,6 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
184 185
185 BUG_ON(!MSR_TM_ACTIVE(regs->msr)); 186 BUG_ON(!MSR_TM_ACTIVE(regs->msr));
186 187
187 /* tm_reclaim rolls back all reg states, saving checkpointed (older)
188 * GPRs to thread.ckpt_regs and (if used) FPRs to (newer)
189 * thread.transact_fp and/or VRs to (newer) thread.transact_vr.
190 * THEN we save out FP/VRs, if necessary, to the checkpointed (older)
191 * thread.fr[]/vr[]s. The transactional (newer) GPRs are on the
192 * stack, in *regs.
193 */
194 tm_enable();
195 tm_reclaim(&current->thread, msr, TM_CAUSE_SIGNAL);
196
197 flush_fp_to_thread(current); 188 flush_fp_to_thread(current);
198 189
199#ifdef CONFIG_ALTIVEC 190#ifdef CONFIG_ALTIVEC
@@ -711,7 +702,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
711 unsigned long newsp = 0; 702 unsigned long newsp = 0;
712 long err = 0; 703 long err = 0;
713 704
714 frame = get_sigframe(ka, regs, sizeof(*frame), 0); 705 frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 0);
715 if (unlikely(frame == NULL)) 706 if (unlikely(frame == NULL))
716 goto badframe; 707 goto badframe;
717 708