* [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
@ 2017-03-15 15:43 Nicholas Piggin
2017-03-16 10:31 ` Michael Ellerman
0 siblings, 1 reply; 7+ messages in thread
From: Nicholas Piggin @ 2017-03-15 15:43 UTC (permalink / raw)
To: linuxppc-dev; +Cc: Nicholas Piggin, Michael Ellerman, Arnd Bergmann
Hi,
I would like to start using a dedicated stack for system reset interrupt
and treat it as a Linux nmi, which makes it tricky to call complex
interrupt handlers directly from the system reset trap handler.
So I would like to remove the decrementer and external handler calls from
Cell and Pasemi platforms' system reset handler. I think we can just
remove them if they can be handled when they re-fire as normal interrupts?
At the moment I don't have environments set up to test if this works.
This will make the powersave wakeup a bit slower. We could add alternate
code to IDLETEST here to branch out to powersave wakeup handler like
powernv does. I haven't got a patch for that yet but I could help write
one if it is important and it can be tested.
Thanks,
Nick
---
arch/powerpc/platforms/cell/pervasive.c | 11 +++++++----
arch/powerpc/platforms/pasemi/idle.c | 11 +++++++----
2 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c
index e7d075077cb0..a88944db9fc3 100644
--- a/arch/powerpc/platforms/cell/pervasive.c
+++ b/arch/powerpc/platforms/cell/pervasive.c
@@ -88,11 +88,14 @@ static void cbe_power_save(void)
static int cbe_system_reset_exception(struct pt_regs *regs)
{
switch (regs->msr & SRR1_WAKEMASK) {
- case SRR1_WAKEEE:
- do_IRQ(regs);
- break;
case SRR1_WAKEDEC:
- timer_interrupt(regs);
+ set_dec(1);
+ case SRR1_WAKEEE:
+ /*
+ * Handle these when interrupts get re-enabled and we take
+ * them as regular exceptions. We are in an NMI context
+ * and can't handle these here.
+ */
break;
case SRR1_WAKEMT:
return cbe_sysreset_hack();
diff --git a/arch/powerpc/platforms/pasemi/idle.c b/arch/powerpc/platforms/pasemi/idle.c
index 75b296bc51af..44e0d9226f0a 100644
--- a/arch/powerpc/platforms/pasemi/idle.c
+++ b/arch/powerpc/platforms/pasemi/idle.c
@@ -53,11 +53,14 @@ static int pasemi_system_reset_exception(struct pt_regs *regs)
regs->nip = regs->link;
switch (regs->msr & SRR1_WAKEMASK) {
- case SRR1_WAKEEE:
- do_IRQ(regs);
- break;
case SRR1_WAKEDEC:
- timer_interrupt(regs);
+ set_dec(1);
+ case SRR1_WAKEEE:
+ /*
+ * Handle these when interrupts get re-enabled and we take
+ * them as regular exceptions. We are in an NMI context
+ * and can't handle these here.
+ */
break;
default:
/* do system reset */
--
2.11.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
2017-03-15 15:43 [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave Nicholas Piggin
@ 2017-03-16 10:31 ` Michael Ellerman
2017-03-17 6:12 ` Michael Ellerman
0 siblings, 1 reply; 7+ messages in thread
From: Michael Ellerman @ 2017-03-16 10:31 UTC (permalink / raw)
To: Nicholas Piggin, linuxppc-dev; +Cc: Nicholas Piggin, Arnd Bergmann
Nicholas Piggin <npiggin@gmail.com> writes:
> Hi,
>
> I would like to start using a dedicated stack for system reset interrupt
> and treat it as a Linux nmi, which makes it tricky to call complex
> interrupt handlers directly from the system reset trap handler.
>
> So I would like to remove the decrementer and external handler calls from
> Cell and Pasemi platforms' system reset handler. I think we can just
> remove them if they can be handled when they re-fire as normal interrupts?
> At the moment I don't have environments set up to test if this works.
My QS22 has booted OK with it applied, so it seems OK.
I'll test it a bit more tomorrow.
cheers
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
2017-03-16 10:31 ` Michael Ellerman
@ 2017-03-17 6:12 ` Michael Ellerman
2017-03-17 7:48 ` [PATCH] powerpc/pasemi,cbe: " Nicholas Piggin
0 siblings, 1 reply; 7+ messages in thread
From: Michael Ellerman @ 2017-03-17 6:12 UTC (permalink / raw)
To: Nicholas Piggin, linuxppc-dev; +Cc: Arnd Bergmann, Nicholas Piggin
Michael Ellerman <mpe@ellerman.id.au> writes:
> Nicholas Piggin <npiggin@gmail.com> writes:
>
>> Hi,
>>
>> I would like to start using a dedicated stack for system reset interrupt
>> and treat it as a Linux nmi, which makes it tricky to call complex
>> interrupt handlers directly from the system reset trap handler.
>>
>> So I would like to remove the decrementer and external handler calls from
>> Cell and Pasemi platforms' system reset handler. I think we can just
>> remove them if they can be handled when they re-fire as normal interrupts?
>> At the moment I don't have environments set up to test if this works.
>
> My QS22 has booted OK with it applied, so it seems OK.
>
> I'll test it a bit more tomorrow.
OK, seems fine, and I have a trace that shows it's definitely going
through that path:
1) | .default_idle_call() {
1) | .arch_cpu_idle() {
1) | .cbe_power_save() {
1) 0.128 us | .prep_irq_for_idle();
1) | .system_reset_exception() {
1) 0.512 us | .cbe_system_reset_exception();
1) 6.016 us | }
1) | .do_IRQ() {
1) | .__do_irq() {
1) | .irq_enter() {
1) 0.704 us | .rcu_irq_enter();
1) | .tick_irq_enter() {
1) 0.448 us | .tick_check_oneshot_broadcast_this_cpu();
1) 0.768 us | .ktime_get();
1) | .update_ts_time_stats() {
1) 0.256 us | .nr_iowait_cpu();
1) 5.632 us | }
1) 0.192 us | .touch_softlockup_watchdog_sched();
1) + 27.904 us | }
1) | ._local_bh_enable() {
1) 0.320 us | .__local_bh_enable();
1) 5.760 us | }
1) 1.024 us | .vtime_account_irq_enter();
1) + 55.744 us | }
1) 1.024 us | .iic_get_irq();
1) | .generic_handle_irq() {
1) | .handle_percpu_irq() {
1) | .handle_irq_event_percpu() {
1) | .__handle_irq_event_percpu() {
1) | .reschedule_action() {
1) | .scheduler_ipi() {
1) | .irq_enter() {
1) 0.640 us | .rcu_irq_enter();
1) 0.384 us | .vtime_account_irq_enter();
1) + 11.776 us | }
1) | .sched_ttwu_pending() {
1) 0.448 us | ._raw_spin_lock_irqsave();
1) | .ttwu_do_activate() {
1) | .activate_task() {
1) 0.256 us | .update_rq_clock();
1) | .enqueue_task_fair() {
1) 0.320 us | .update_curr();
1) 0.256 us | .__compute_runnable_contrib();
1) 0.384 us | .attach_entity_load_avg();
1) 0.256 us | .__enqueue_entity();
1) 0.192 us | .hrtick_update();
1) + 30.592 us | }
1) + 41.216 us | }
1) | .wq_worker_waking_up() {
1) 0.576 us | .kthread_data();
1) 6.464 us | }
1) | .ttwu_do_wakeup() {
1) | .check_preempt_curr() {
1) 0.576 us | .resched_curr();
1) 6.272 us | }
1) + 12.224 us | }
1) + 75.904 us | }
1) 0.320 us | ._raw_spin_unlock_irqrestore();
1) + 92.736 us | }
1) | .irq_exit() {
1) 0.192 us | .idle_cpu();
1) 0.256 us | .rcu_irq_exit();
1) + 11.520 us | }
1) ! 132.032 us | }
1) ! 137.280 us | }
1) ! 142.784 us | }
1) | .add_interrupt_randomness() {
1) 0.704 us | ._raw_spin_trylock();
1) | .__mix_pool_bytes() {
1) 1.152 us | ._mix_pool_bytes();
1) 6.464 us | }
1) | .credit_entropy_bits() {
1) | .__wake_up() {
1) 0.384 us | ._raw_spin_lock_irqsave();
1) 0.256 us | .__wake_up_common();
1) 0.256 us | ._raw_spin_unlock_irqrestore();
1) + 16.384 us | }
1) 0.256 us | .kill_fasync();
1) + 27.584 us | }
1) + 49.856 us | }
1) 0.256 us | .note_interrupt();
1) ! 208.768 us | }
1) 0.448 us | .iic_eoi();
1) ! 220.352 us | }
1) ! 227.200 us | }
1) | .irq_exit() {
1) 0.128 us | .idle_cpu();
1) | .rcu_irq_exit() {
1) 0.576 us | .rcu_eqs_enter_common.isra.46();
1) 3.840 us | }
1) + 10.688 us | }
1) ! 313.024 us | }
1) ! 318.400 us | }
1) @ 960000.6 us | }
1) @ 960004.3 us | }
1) @ 960007.8 us | }
cheers
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] powerpc/pasemi,cbe: Do not process decremeter or external wakeup from powersave
2017-03-17 6:12 ` Michael Ellerman
@ 2017-03-17 7:48 ` Nicholas Piggin
2017-03-17 10:17 ` [PATCH] powerpc/pasemi, cbe: " Michael Ellerman
0 siblings, 1 reply; 7+ messages in thread
From: Nicholas Piggin @ 2017-03-17 7:48 UTC (permalink / raw)
To: Michael Ellerman; +Cc: linuxppc-dev, Arnd Bergmann
On Fri, 17 Mar 2017 17:12:11 +1100
Michael Ellerman <mpe@ellerman.id.au> wrote:
> Michael Ellerman <mpe@ellerman.id.au> writes:
>
> > Nicholas Piggin <npiggin@gmail.com> writes:
> >
> >> Hi,
> >>
> >> I would like to start using a dedicated stack for system reset interrupt
> >> and treat it as a Linux nmi, which makes it tricky to call complex
> >> interrupt handlers directly from the system reset trap handler.
> >>
> >> So I would like to remove the decrementer and external handler calls from
> >> Cell and Pasemi platforms' system reset handler. I think we can just
> >> remove them if they can be handled when they re-fire as normal interrupts?
> >> At the moment I don't have environments set up to test if this works.
> >
> > My QS22 has booted OK with it applied, so it seems OK.
> >
> > I'll test it a bit more tomorrow.
>
> OK, seems fine, and I have a trace that shows it's definitely going
> through that path:
Thanks for testing it.
> 1) | .default_idle_call() {
> 1) | .arch_cpu_idle() {
> 1) | .cbe_power_save() {
> 1) 0.128 us | .prep_irq_for_idle();
> 1) | .system_reset_exception() {
> 1) 0.512 us | .cbe_system_reset_exception();
> 1) 6.016 us | }
> 1) | .do_IRQ() {
It seems to do the right thing. I think decrementer should be working
proprely by setting it to 1 to get another exception?
In that case I will add a changelog and submit the patch.
Thanks,
Nick
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
2017-03-17 7:48 ` [PATCH] powerpc/pasemi,cbe: " Nicholas Piggin
@ 2017-03-17 10:17 ` Michael Ellerman
0 siblings, 0 replies; 7+ messages in thread
From: Michael Ellerman @ 2017-03-17 10:17 UTC (permalink / raw)
To: Nicholas Piggin; +Cc: linuxppc-dev, Arnd Bergmann
Nicholas Piggin <npiggin@gmail.com> writes:
> On Fri, 17 Mar 2017 17:12:11 +1100
> Michael Ellerman <mpe@ellerman.id.au> wrote:
>> Michael Ellerman <mpe@ellerman.id.au> writes:
>> > Nicholas Piggin <npiggin@gmail.com> writes:
>> >> I would like to start using a dedicated stack for system reset interrupt
>> >> and treat it as a Linux nmi, which makes it tricky to call complex
>> >> interrupt handlers directly from the system reset trap handler.
>> >>
>> >> So I would like to remove the decrementer and external handler calls from
>> >> Cell and Pasemi platforms' system reset handler. I think we can just
>> >> remove them if they can be handled when they re-fire as normal interrupts?
>> >> At the moment I don't have environments set up to test if this works.
>> >
>> > My QS22 has booted OK with it applied, so it seems OK.
>> >
>> > I'll test it a bit more tomorrow.
>>
>> OK, seems fine, and I have a trace that shows it's definitely going
>> through that path:
>
> Thanks for testing it.
>
>> 1) | .default_idle_call() {
>> 1) | .arch_cpu_idle() {
>> 1) | .cbe_power_save() {
>> 1) 0.128 us | .prep_irq_for_idle();
>> 1) | .system_reset_exception() {
>> 1) 0.512 us | .cbe_system_reset_exception();
>> 1) 6.016 us | }
>> 1) | .do_IRQ() {
>
> It seems to do the right thing. I think decrementer should be working
> proprely by setting it to 1 to get another exception?
Yeah it is. It wasn't showing up in traces but I fixed that and here it
is below.
I'll try and test pasemi on Monday, but this looks fine for Cell.
cheers
1) | .default_idle_call() {
1) | .arch_cpu_idle() {
1) | .cbe_power_save() {
1) 0.192 us | .prep_irq_for_idle();
1) | .system_reset_exception() {
1) 0.320 us | .cbe_system_reset_exception();
1) 6.016 us | }
1) | .timer_interrupt() {
1) | .irq_enter() {
1) 0.768 us | .rcu_irq_enter();
1) | .tick_irq_enter() {
1) 0.256 us | .tick_check_oneshot_broadcast_this_cpu();
1) | .ktime_get() {
1) 0.192 us | .timebase_read();
1) 5.504 us | }
1) | .update_ts_time_stats() {
1) 0.640 us | .nr_iowait_cpu();
1) 6.656 us | }
1) + 28.160 us | }
1) | ._local_bh_enable() {
1) 0.192 us | .__local_bh_enable();
1) 5.120 us | }
1) | .vtime_account_irq_enter() {
1) | .vtime_account_idle() {
1) 0.320 us | .vtime_delta.isra.5();
1) 5.504 us | }
1) + 10.560 us | }
1) + 66.048 us | }
1) | .__timer_interrupt() {
1) | .hrtimer_interrupt() {
1) 0.448 us | ._raw_spin_lock();
1) | .ktime_get_update_offsets_now() {
1) 0.256 us | .timebase_read();
1) 5.760 us | }
1) | .__hrtimer_run_queues() {
1) 0.960 us | .__remove_hrtimer();
1) | .tick_sched_timer() {
1) | .ktime_get() {
1) 0.320 us | .timebase_read();
1) 5.888 us | }
1) | .tick_sched_do_timer() {
1) | .tick_do_update_jiffies64.part.14() {
1) 0.384 us | ._raw_spin_lock();
1) | .do_timer() {
1) 0.640 us | .calc_global_load();
1) 5.632 us | }
1) | .update_wall_time() {
1) 0.576 us | ._raw_spin_lock_irqsave();
1) 0.192 us | .timebase_read();
1) 0.192 us | .ntp_tick_length();
1) 0.256 us | .ntp_tick_length();
1) 0.192 us | .ntp_tick_length();
1) | .timekeeping_update() {
1) 0.192 us | .ntp_get_next_leap();
1) 1.600 us | .update_vsyscall_old();
1) | .raw_notifier_call_chain() {
1) 0.768 us | .notifier_call_chain();
1) 5.760 us | }
1) 0.768 us | .update_fast_timekeeper();
1) 0.384 us | .update_fast_timekeeper();
1) + 34.304 us | }
1) 0.192 us | ._raw_spin_unlock_irqrestore();
1) + 75.264 us | }
1) + 98.048 us | }
1) ! 103.552 us | }
1) | .tick_sched_handle.isra.16() {
1) | .update_process_times() {
1) | .vtime_flush() {
1) 0.576 us | .account_idle_time();
1) 5.952 us | }
1) | .run_local_timers() {
1) 0.192 us | .hrtimer_run_queues();
1) | .raise_softirq() {
1) 0.704 us | .__raise_softirq_irqoff();
1) 5.440 us | }
1) + 16.128 us | }
1) | .rcu_check_callbacks() {
1) 0.256 us | .rcu_sched_qs();
1) 0.256 us | .cpu_needs_another_gp();
1) 0.192 us | .cpu_needs_another_gp();
1) + 17.536 us | }
1) | .scheduler_tick() {
1) 0.448 us | ._raw_spin_lock();
1) 0.640 us | .update_rq_clock();
1) 0.192 us | .task_tick_idle();
1) | .cpu_load_update_active() {
1) 0.576 us | .tick_nohz_tick_stopped();
1) | .cpu_load_update() {
1) 0.192 us | .decay_load_missed();
1) 0.256 us | .decay_load_missed();
1) 0.192 us | .decay_load_missed();
1) 0.192 us | .decay_load_missed();
1) 0.256 us | .decay_load_missed();
1) 0.192 us | .decay_load_missed();
1) 0.128 us | .decay_load_missed();
1) 0.576 us | .decay_load_missed();
1) 0.448 us | .sched_avg_update();
1) + 46.592 us | }
1) + 57.088 us | }
1) 0.256 us | .calc_global_load_tick();
1) | .trigger_load_balance() {
1) | .raise_softirq() {
1) 0.256 us | .__raise_softirq_irqoff();
1) 5.504 us | }
1) + 10.496 us | }
1) + 99.456 us | }
1) 0.896 us | .run_posix_cpu_timers();
1) ! 165.504 us | }
1) 0.256 us | .profile_tick();
1) ! 175.744 us | }
1) | .hrtimer_forward() {
1) 0.192 us | .ktime_add_safe();
1) 0.192 us | .ktime_add_safe();
1) + 10.880 us | }
1) ! 315.968 us | }
1) 0.320 us | ._raw_spin_lock();
1) 0.704 us | .enqueue_hrtimer();
1) ! 339.072 us | }
1) 0.256 us | .__hrtimer_get_next_event();
1) | .tick_program_event() {
1) | .clockevents_program_event() {
1) | .ktime_get() {
1) 0.192 us | .timebase_read();
1) 5.568 us | }
1) 0.192 us | .decrementer_set_next_event();
1) + 16.448 us | }
1) + 21.888 us | }
1) ! 393.152 us | }
1) ! 398.592 us | }
1) | .irq_exit() {
1) | .vtime_account_system() {
1) 0.320 us | .vtime_delta.isra.5();
1) 5.760 us | }
1) | .__do_softirq() {
1) | .vtime_account_irq_enter() {
1) | .vtime_account_idle() {
1) 0.256 us | .vtime_delta.isra.5();
1) 5.632 us | }
1) + 10.944 us | }
1) | .run_timer_softirq() {
1) 0.896 us | ._raw_spin_lock_irq();
1) 0.640 us | .collect_expired_timers();
1) 0.320 us | ._raw_spin_lock_irq();
1) 0.256 us | .collect_expired_timers();
1) + 23.552 us | }
1) | .run_rebalance_domains() {
1) | .rebalance_domains() {
1) 0.256 us | ._raw_spin_lock_irqsave();
1) 0.320 us | .update_rq_clock();
1) 0.256 us | .__compute_runnable_contrib();
1) 0.256 us | ._raw_spin_unlock_irqrestore();
1) 0.384 us | .__msecs_to_jiffies();
1) | .load_balance() {
1) 0.320 us | .idle_cpu();
1) | .find_busiest_group() {
1) | .update_group_capacity() {
1) 0.448 us | .__msecs_to_jiffies();
1) 6.016 us | }
1) 0.576 us | .idle_cpu();
1) + 18.624 us | }
1) + 31.680 us | }
1) 0.192 us | .__msecs_to_jiffies();
1) 0.128 us | .__msecs_to_jiffies();
1) 0.576 us | ._raw_spin_trylock();
1) | .load_balance() {
1) 0.256 us | .idle_cpu();
1) 0.192 us | .idle_cpu();
1) | .find_busiest_group() {
1) | .update_group_capacity() {
1) 0.192 us | .__msecs_to_jiffies();
1) 5.632 us | }
1) 0.256 us | .idle_cpu();
1) 0.576 us | .idle_cpu();
1) 0.768 us | .idle_cpu();
1) + 31.808 us | }
1) + 47.872 us | }
1) 0.128 us | .__msecs_to_jiffies();
1) ! 141.504 us | }
1) ! 147.328 us | }
1) 0.320 us | .rcu_bh_qs();
1) | .vtime_account_system() {
1) 0.320 us | .vtime_delta.isra.5();
1) 5.568 us | }
1) 0.192 us | .__local_bh_enable();
1) ! 220.416 us | }
1) 0.832 us | .idle_cpu();
1) | .tick_nohz_irq_exit() {
1) | .__tick_nohz_idle_enter() {
1) | .ktime_get() {
1) 0.576 us | .timebase_read();
1) 5.568 us | }
1) 0.256 us | .rcu_needs_cpu();
1) 0.192 us | .timer_clear_idle();
1) + 21.696 us | }
1) + 27.520 us | }
1) | .rcu_irq_exit() {
1) 1.024 us | .rcu_eqs_enter_common.isra.46();
1) 6.400 us | }
1) ! 285.504 us | }
1) ! 765.248 us | }
1) # 2864.576 us | }
1) # 2871.616 us | }
1) # 2877.184 us | }
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
2017-03-17 14:43 Christian Zigotzky
@ 2017-03-18 12:46 ` Nicholas Piggin
0 siblings, 0 replies; 7+ messages in thread
From: Nicholas Piggin @ 2017-03-18 12:46 UTC (permalink / raw)
To: Christian Zigotzky; +Cc: linuxppc-dev
On Fri, 17 Mar 2017 15:43:22 +0100
Christian Zigotzky <chzigotzky@xenosoft.de> wrote:
> Nicholas Piggin <npiggin at gmail.com> writes:
>
> > Hi,
> >
> > I would like to start using a dedicated stack for system reset interrupt
> > and treat it as a Linux nmi, which makes it tricky to call complex
> > interrupt handlers directly from the system reset trap handler.
> >
> > So I would like to remove the decrementer and external handler calls from
> > Cell and Pasemi platforms' system reset handler. I think we can just
> > remove them if they can be handled when they re-fire as normal
> interrupts?
> > At the moment I don't have environments set up to test if this works.
>
>
> It works fine with my AmigaOne X1000. (Nemo board with a P.A. Semi
> PA6T-1682M CPU)
Thanks for testing, that's very useful. I will add your tested-by line
for the pasemi part of the patch.
Thanks,
Nick
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave
@ 2017-03-17 14:43 Christian Zigotzky
2017-03-18 12:46 ` Nicholas Piggin
0 siblings, 1 reply; 7+ messages in thread
From: Christian Zigotzky @ 2017-03-17 14:43 UTC (permalink / raw)
To: linuxppc-dev
Nicholas Piggin <npiggin at gmail.com> writes:
> Hi,
>
> I would like to start using a dedicated stack for system reset interrupt
> and treat it as a Linux nmi, which makes it tricky to call complex
> interrupt handlers directly from the system reset trap handler.
>
> So I would like to remove the decrementer and external handler calls from
> Cell and Pasemi platforms' system reset handler. I think we can just
> remove them if they can be handled when they re-fire as normal
interrupts?
> At the moment I don't have environments set up to test if this works.
It works fine with my AmigaOne X1000. (Nemo board with a P.A. Semi
PA6T-1682M CPU)
-- Christian
^ permalink raw reply [flat|nested] 7+ messages in thread
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2017-03-15 15:43 [PATCH] powerpc/pasemi, cbe: Do not process decremeter or external wakeup from powersave Nicholas Piggin
2017-03-16 10:31 ` Michael Ellerman
2017-03-17 6:12 ` Michael Ellerman
2017-03-17 7:48 ` [PATCH] powerpc/pasemi,cbe: " Nicholas Piggin
2017-03-17 10:17 ` [PATCH] powerpc/pasemi, cbe: " Michael Ellerman
2017-03-17 14:43 Christian Zigotzky
2017-03-18 12:46 ` Nicholas Piggin
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