[PATCH v2 0/3] Convert sparc devices to new ptimer API

[PATCH v2 0/3] Convert sparc devices to new ptimer API

[Peter Maydell]

This patchset converts the devices used by sparc machines to the new
ptimer API.

Currently the ptimer design uses a QEMU bottom-half as its mechanism
for calling back into the device model using the ptimer when the
timer has expired.  Unfortunately this design is fatally flawed,
because it means that there is a lag between the ptimer updating its
own state and the device callback function updating device state, and
guest accesses to device registers between the two can return
inconsistent device state. This was reported as a bug in a specific
timer device but it's a problem with the generic ptimer code:
https://bugs.launchpad.net/qemu/+bug/1777777

The updates to the individual ptimer devices are straightforward:
we need to add begin/commit calls around the various places that
modify the ptimer state, and use the new ptimer_init() function
to create the timer.

Changes v1->v2:
 * patches 2 and 3 are the old 1 and 2 and have been reviewed
 * patch 1 is new and removes a pointless NULL check; without
   this we'd probably have got Coverity errors when patch 3
   added a use of t->timer before the check for it being NULL

thanks
--PMM


MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

*** BLURB HERE ***

Peter Maydell (3):
  hw/timer/slavio_timer: Remove useless check for NULL t->timer
  hw/timer/grlib_gptimer.c: Switch to transaction-based ptimer API
  hw/timer/slavio_timer.c: Switch to transaction-based ptimer API

 hw/timer/grlib_gptimer.c | 28 ++++++++++++++++++++++++----
 hw/timer/slavio_timer.c  | 32 +++++++++++++++++++++-----------
 2 files changed, 45 insertions(+), 15 deletions(-)

-- 
2.20.1

[PATCH v2 1/3] hw/timer/slavio_timer: Remove useless check for NULL t->timer

[Peter Maydell]

In the slavio timer devcie, the ptimer TimerContext::timer is
always created by slavio_timer_init(), so there's no need to
check it for NULL; remove the single unneeded NULL check.

This will be useful to avoid compiler/Coverity errors when
a subsequent change adds a use of t->timer before the location
we currently do the NULL check.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/timer/slavio_timer.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
index 692d213897d..890dd53f8d8 100644
--- a/hw/timer/slavio_timer.c
+++ b/hw/timer/slavio_timer.c
@@ -227,13 +227,11 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
             // set limit, reset counter
             qemu_irq_lower(t->irq);
             t->limit = val & TIMER_MAX_COUNT32;
-            if (t->timer) {
-                if (t->limit == 0) { /* free-run */
-                    ptimer_set_limit(t->timer,
-                                     LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
-                } else {
-                    ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
-                }
+            if (t->limit == 0) { /* free-run */
+                ptimer_set_limit(t->timer,
+                                 LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
+            } else {
+                ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
             }
         }
         break;
-- 
2.20.1

[PATCH v2 2/3] hw/timer/grlib_gptimer.c: Switch to transaction-based ptimer API

[Peter Maydell]

Switch the grlib_gptimer code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/timer/grlib_gptimer.c | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/hw/timer/grlib_gptimer.c b/hw/timer/grlib_gptimer.c
index bb09268ea14..7a9371c0e30 100644
--- a/hw/timer/grlib_gptimer.c
+++ b/hw/timer/grlib_gptimer.c
@@ -29,7 +29,6 @@
 #include "hw/irq.h"
 #include "hw/ptimer.h"
 #include "hw/qdev-properties.h"
-#include "qemu/main-loop.h"
 #include "qemu/module.h"
 
 #include "trace.h"
@@ -63,7 +62,6 @@ typedef struct GPTimer     GPTimer;
 typedef struct GPTimerUnit GPTimerUnit;
 
 struct GPTimer {
-    QEMUBH *bh;
     struct ptimer_state *ptimer;
 
     qemu_irq     irq;
@@ -93,6 +91,17 @@ struct GPTimerUnit {
     uint32_t config;
 };
 
+static void grlib_gptimer_tx_begin(GPTimer *timer)
+{
+    ptimer_transaction_begin(timer->ptimer);
+}
+
+static void grlib_gptimer_tx_commit(GPTimer *timer)
+{
+    ptimer_transaction_commit(timer->ptimer);
+}
+
+/* Must be called within grlib_gptimer_tx_begin/commit block */
 static void grlib_gptimer_enable(GPTimer *timer)
 {
     assert(timer != NULL);
@@ -115,6 +124,7 @@ static void grlib_gptimer_enable(GPTimer *timer)
     ptimer_run(timer->ptimer, 1);
 }
 
+/* Must be called within grlib_gptimer_tx_begin/commit block */
 static void grlib_gptimer_restart(GPTimer *timer)
 {
     assert(timer != NULL);
@@ -141,7 +151,9 @@ static void grlib_gptimer_set_scaler(GPTimerUnit *unit, uint32_t scaler)
     trace_grlib_gptimer_set_scaler(scaler, value);
 
     for (i = 0; i < unit->nr_timers; i++) {
+        ptimer_transaction_begin(unit->timers[i].ptimer);
         ptimer_set_freq(unit->timers[i].ptimer, value);
+        ptimer_transaction_commit(unit->timers[i].ptimer);
     }
 }
 
@@ -266,8 +278,10 @@ static void grlib_gptimer_write(void *opaque, hwaddr addr,
         switch (timer_addr) {
         case COUNTER_OFFSET:
             trace_grlib_gptimer_writel(id, addr, value);
+            grlib_gptimer_tx_begin(&unit->timers[id]);
             unit->timers[id].counter = value;
             grlib_gptimer_enable(&unit->timers[id]);
+            grlib_gptimer_tx_commit(&unit->timers[id]);
             return;
 
         case COUNTER_RELOAD_OFFSET:
@@ -291,6 +305,7 @@ static void grlib_gptimer_write(void *opaque, hwaddr addr,
             /* gptimer_restart calls gptimer_enable, so if "enable" and "load"
                bits are present, we just have to call restart. */
 
+            grlib_gptimer_tx_begin(&unit->timers[id]);
             if (value & GPTIMER_LOAD) {
                 grlib_gptimer_restart(&unit->timers[id]);
             } else if (value & GPTIMER_ENABLE) {
@@ -301,6 +316,7 @@ static void grlib_gptimer_write(void *opaque, hwaddr addr,
             value &= ~(GPTIMER_LOAD & GPTIMER_DEBUG_HALT);
 
             unit->timers[id].config = value;
+            grlib_gptimer_tx_commit(&unit->timers[id]);
             return;
 
         default:
@@ -344,9 +360,11 @@ static void grlib_gptimer_reset(DeviceState *d)
         timer->counter = 0;
         timer->reload = 0;
         timer->config = 0;
+        ptimer_transaction_begin(timer->ptimer);
         ptimer_stop(timer->ptimer);
         ptimer_set_count(timer->ptimer, 0);
         ptimer_set_freq(timer->ptimer, unit->freq_hz);
+        ptimer_transaction_commit(timer->ptimer);
     }
 }
 
@@ -365,14 +383,16 @@ static void grlib_gptimer_realize(DeviceState *dev, Error **errp)
         GPTimer *timer = &unit->timers[i];
 
         timer->unit   = unit;
-        timer->bh     = qemu_bh_new(grlib_gptimer_hit, timer);
-        timer->ptimer = ptimer_init_with_bh(timer->bh, PTIMER_POLICY_DEFAULT);
+        timer->ptimer = ptimer_init(grlib_gptimer_hit, timer,
+                                    PTIMER_POLICY_DEFAULT);
         timer->id     = i;
 
         /* One IRQ line for each timer */
         sysbus_init_irq(sbd, &timer->irq);
 
+        ptimer_transaction_begin(timer->ptimer);
         ptimer_set_freq(timer->ptimer, unit->freq_hz);
+        ptimer_transaction_commit(timer->ptimer);
     }
 
     memory_region_init_io(&unit->iomem, OBJECT(unit), &grlib_gptimer_ops,
-- 
2.20.1

[PATCH v2 3/3] hw/timer/slavio_timer.c: Switch to transaction-based ptimer API

[Peter Maydell]

Switch the slavio_timer code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 hw/timer/slavio_timer.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
index 890dd53f8d8..c55e8d0bf42 100644
--- a/hw/timer/slavio_timer.c
+++ b/hw/timer/slavio_timer.c
@@ -30,7 +30,6 @@
 #include "hw/sysbus.h"
 #include "migration/vmstate.h"
 #include "trace.h"
-#include "qemu/main-loop.h"
 #include "qemu/module.h"
 
 /*
@@ -213,6 +212,7 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
     saddr = addr >> 2;
     switch (saddr) {
     case TIMER_LIMIT:
+        ptimer_transaction_begin(t->timer);
         if (slavio_timer_is_user(tc)) {
             uint64_t count;
 
@@ -234,6 +234,7 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
                 ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
             }
         }
+        ptimer_transaction_commit(t->timer);
         break;
     case TIMER_COUNTER:
         if (slavio_timer_is_user(tc)) {
@@ -245,7 +246,9 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
             t->reached = 0;
             count = ((uint64_t)t->counthigh) << 32 | t->count;
             trace_slavio_timer_mem_writel_limit(timer_index, count);
+            ptimer_transaction_begin(t->timer);
             ptimer_set_count(t->timer, LIMIT_TO_PERIODS(t->limit - count));
+            ptimer_transaction_commit(t->timer);
         } else {
             trace_slavio_timer_mem_writel_counter_invalid();
         }
@@ -253,13 +256,16 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
     case TIMER_COUNTER_NORST:
         // set limit without resetting counter
         t->limit = val & TIMER_MAX_COUNT32;
+        ptimer_transaction_begin(t->timer);
         if (t->limit == 0) { /* free-run */
             ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 0);
         } else {
             ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 0);
         }
+        ptimer_transaction_commit(t->timer);
         break;
     case TIMER_STATUS:
+        ptimer_transaction_begin(t->timer);
         if (slavio_timer_is_user(tc)) {
             // start/stop user counter
             if (val & 1) {
@@ -271,6 +277,7 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
             }
         }
         t->run = val & 1;
+        ptimer_transaction_commit(t->timer);
         break;
     case TIMER_MODE:
         if (timer_index == 0) {
@@ -280,6 +287,7 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
                 unsigned int processor = 1 << i;
                 CPUTimerState *curr_timer = &s->cputimer[i + 1];
 
+                ptimer_transaction_begin(curr_timer->timer);
                 // check for a change in timer mode for this processor
                 if ((val & processor) != (s->cputimer_mode & processor)) {
                     if (val & processor) { // counter -> user timer
@@ -306,6 +314,7 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
                         trace_slavio_timer_mem_writel_mode_counter(timer_index);
                     }
                 }
+                ptimer_transaction_commit(curr_timer->timer);
             }
         } else {
             trace_slavio_timer_mem_writel_mode_invalid();
@@ -365,10 +374,12 @@ static void slavio_timer_reset(DeviceState *d)
         curr_timer->count = 0;
         curr_timer->reached = 0;
         if (i <= s->num_cpus) {
+            ptimer_transaction_begin(curr_timer->timer);
             ptimer_set_limit(curr_timer->timer,
                              LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
             ptimer_run(curr_timer->timer, 0);
             curr_timer->run = 1;
+            ptimer_transaction_commit(curr_timer->timer);
         }
     }
     s->cputimer_mode = 0;
@@ -378,7 +389,6 @@ static void slavio_timer_init(Object *obj)
 {
     SLAVIO_TIMERState *s = SLAVIO_TIMER(obj);
     SysBusDevice *dev = SYS_BUS_DEVICE(obj);
-    QEMUBH *bh;
     unsigned int i;
     TimerContext *tc;
 
@@ -390,9 +400,11 @@ static void slavio_timer_init(Object *obj)
         tc->s = s;
         tc->timer_index = i;
 
-        bh = qemu_bh_new(slavio_timer_irq, tc);
-        s->cputimer[i].timer = ptimer_init_with_bh(bh, PTIMER_POLICY_DEFAULT);
+        s->cputimer[i].timer = ptimer_init(slavio_timer_irq, tc,
+                                           PTIMER_POLICY_DEFAULT);
+        ptimer_transaction_begin(s->cputimer[i].timer);
         ptimer_set_period(s->cputimer[i].timer, TIMER_PERIOD);
+        ptimer_transaction_commit(s->cputimer[i].timer);
 
         size = i == 0 ? SYS_TIMER_SIZE : CPU_TIMER_SIZE;
         snprintf(timer_name, sizeof(timer_name), "timer-%i", i);
-- 
2.20.1

Re: [PATCH v2 1/3] hw/timer/slavio_timer: Remove useless check for NULL t->timer

[Philippe Mathieu-Daudé]

On 10/21/19 3:43 PM, Peter Maydell wrote:
> In the slavio timer devcie, the ptimer TimerContext::timer is

typo "device"

> always created by slavio_timer_init(), so there's no need to
> check it for NULL; remove the single unneeded NULL check.
> 
> This will be useful to avoid compiler/Coverity errors when
> a subsequent change adds a use of t->timer before the location
> we currently do the NULL check.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>   hw/timer/slavio_timer.c | 12 +++++-------
>   1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
> index 692d213897d..890dd53f8d8 100644
> --- a/hw/timer/slavio_timer.c
> +++ b/hw/timer/slavio_timer.c
> @@ -227,13 +227,11 @@ static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
>               // set limit, reset counter
>               qemu_irq_lower(t->irq);
>               t->limit = val & TIMER_MAX_COUNT32;
> -            if (t->timer) {
> -                if (t->limit == 0) { /* free-run */
> -                    ptimer_set_limit(t->timer,
> -                                     LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
> -                } else {
> -                    ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
> -                }
> +            if (t->limit == 0) { /* free-run */
> +                ptimer_set_limit(t->timer,
> +                                 LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
> +            } else {
> +                ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
>               }
>           }
>           break;
> 

Re: [PATCH v2 0/3] Convert sparc devices to new ptimer API

[Philippe Mathieu-Daudé]

On 10/21/19 3:43 PM, Peter Maydell wrote:
> This patchset converts the devices used by sparc machines to the new
> ptimer API.
> 
> Currently the ptimer design uses a QEMU bottom-half as its mechanism
> for calling back into the device model using the ptimer when the
> timer has expired.  Unfortunately this design is fatally flawed,
> because it means that there is a lag between the ptimer updating its
> own state and the device callback function updating device state, and
> guest accesses to device registers between the two can return
> inconsistent device state. This was reported as a bug in a specific
> timer device but it's a problem with the generic ptimer code:
> https://bugs.launchpad.net/qemu/+bug/1777777
> 
> The updates to the individual ptimer devices are straightforward:
> we need to add begin/commit calls around the various places that
> modify the ptimer state, and use the new ptimer_init() function
> to create the timer.
> 
> Changes v1->v2:
>   * patches 2 and 3 are the old 1 and 2 and have been reviewed
>   * patch 1 is new and removes a pointless NULL check; without
>     this we'd probably have got Coverity errors when patch 3
>     added a use of t->timer before the check for it being NULL
> 
> thanks
> --PMM
> 
> 
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> *** BLURB HERE ***
> 
> Peter Maydell (3):
>    hw/timer/slavio_timer: Remove useless check for NULL t->timer
>    hw/timer/grlib_gptimer.c: Switch to transaction-based ptimer API
>    hw/timer/slavio_timer.c: Switch to transaction-based ptimer API

Nitpicking, maybe reorder the grlib_gptimer patch last:

   hw/timer/slavio_timer: Remove useless check for NULL t->timer
   hw/timer/slavio_timer.c: Switch to transaction-based ptimer API
   hw/timer/grlib_gptimer.c: Switch to transaction-based ptimer API

Re: [PATCH v2 1/3] hw/timer/slavio_timer: Remove useless check for NULL t->timer

[Richard Henderson]

On 10/21/19 6:43 AM, Peter Maydell wrote:
> In the slavio timer devcie, the ptimer TimerContext::timer is
> always created by slavio_timer_init(), so there's no need to
> check it for NULL; remove the single unneeded NULL check.
> 
> This will be useful to avoid compiler/Coverity errors when
> a subsequent change adds a use of t->timer before the location
> we currently do the NULL check.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  hw/timer/slavio_timer.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v2 0/3] Convert sparc devices to new ptimer API

[Peter Maydell]

On Mon, 21 Oct 2019 at 14:43, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> This patchset converts the devices used by sparc machines to the new
> ptimer API.
>
> Currently the ptimer design uses a QEMU bottom-half as its mechanism
> for calling back into the device model using the ptimer when the
> timer has expired.  Unfortunately this design is fatally flawed,
> because it means that there is a lag between the ptimer updating its
> own state and the device callback function updating device state, and
> guest accesses to device registers between the two can return
> inconsistent device state. This was reported as a bug in a specific
> timer device but it's a problem with the generic ptimer code:
> https://bugs.launchpad.net/qemu/+bug/1777777
>
> The updates to the individual ptimer devices are straightforward:
> we need to add begin/commit calls around the various places that
> modify the ptimer state, and use the new ptimer_init() function
> to create the timer.
>
> Changes v1->v2:
>  * patches 2 and 3 are the old 1 and 2 and have been reviewed
>  * patch 1 is new and removes a pointless NULL check; without
>    this we'd probably have got Coverity errors when patch 3
>    added a use of t->timer before the check for it being NULL

I'm going to apply these to target-arm.next; I know they haven't
been on list long but the change since v1 is only minor and
they've all been reviewed.

thanks
-- PMM

Re: [PATCH v2 0/3] Convert sparc devices to new ptimer API

[Mark Cave-Ayland]

On 24/10/2019 13:19, Peter Maydell wrote:

> On Mon, 21 Oct 2019 at 14:43, Peter Maydell <peter.maydell@linaro.org> wrote:
>>
>> This patchset converts the devices used by sparc machines to the new
>> ptimer API.
>>
>> Currently the ptimer design uses a QEMU bottom-half as its mechanism
>> for calling back into the device model using the ptimer when the
>> timer has expired.  Unfortunately this design is fatally flawed,
>> because it means that there is a lag between the ptimer updating its
>> own state and the device callback function updating device state, and
>> guest accesses to device registers between the two can return
>> inconsistent device state. This was reported as a bug in a specific
>> timer device but it's a problem with the generic ptimer code:
>> https://bugs.launchpad.net/qemu/+bug/1777777
>>
>> The updates to the individual ptimer devices are straightforward:
>> we need to add begin/commit calls around the various places that
>> modify the ptimer state, and use the new ptimer_init() function
>> to create the timer.
>>
>> Changes v1->v2:
>>  * patches 2 and 3 are the old 1 and 2 and have been reviewed
>>  * patch 1 is new and removes a pointless NULL check; without
>>    this we'd probably have got Coverity errors when patch 3
>>    added a use of t->timer before the check for it being NULL
> 
> I'm going to apply these to target-arm.next; I know they haven't
> been on list long but the change since v1 is only minor and
> they've all been reviewed.

Thanks Peter! Not sure if you saw my Tested-by tag last week for the slavio (sun4m)
parts, but there were no obvious regressions that I could see under qemu-system-sparc.


ATB,

Mark.

Re: [PATCH v2 0/3] Convert sparc devices to new ptimer API

[Philippe Mathieu-Daudé]

On 10/24/19 8:04 PM, Mark Cave-Ayland wrote:
> On 24/10/2019 13:19, Peter Maydell wrote:
> 
>> On Mon, 21 Oct 2019 at 14:43, Peter Maydell <peter.maydell@linaro.org> wrote:
>>>
>>> This patchset converts the devices used by sparc machines to the new
>>> ptimer API.
>>>
>>> Currently the ptimer design uses a QEMU bottom-half as its mechanism
>>> for calling back into the device model using the ptimer when the
>>> timer has expired.  Unfortunately this design is fatally flawed,
>>> because it means that there is a lag between the ptimer updating its
>>> own state and the device callback function updating device state, and
>>> guest accesses to device registers between the two can return
>>> inconsistent device state. This was reported as a bug in a specific
>>> timer device but it's a problem with the generic ptimer code:
>>> https://bugs.launchpad.net/qemu/+bug/1777777
>>>
>>> The updates to the individual ptimer devices are straightforward:
>>> we need to add begin/commit calls around the various places that
>>> modify the ptimer state, and use the new ptimer_init() function
>>> to create the timer.
>>>
>>> Changes v1->v2:
>>>   * patches 2 and 3 are the old 1 and 2 and have been reviewed
>>>   * patch 1 is new and removes a pointless NULL check; without
>>>     this we'd probably have got Coverity errors when patch 3
>>>     added a use of t->timer before the check for it being NULL
>>
>> I'm going to apply these to target-arm.next; I know they haven't
>> been on list long but the change since v1 is only minor and
>> they've all been reviewed.
> 
> Thanks Peter! Not sure if you saw my Tested-by tag last week for the slavio (sun4m)
> parts, but there were no obvious regressions that I could see under qemu-system-sparc.

This was on v1:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg653861.html

Re: [PATCH v2 0/3] Convert sparc devices to new ptimer API

[Peter Maydell]

On Thu, 24 Oct 2019 at 19:10, Mark Cave-Ayland
<mark.cave-ayland@ilande.co.uk> wrote:
>
> On 24/10/2019 13:19, Peter Maydell wrote:
> > I'm going to apply these to target-arm.next; I know they haven't
> > been on list long but the change since v1 is only minor and
> > they've all been reviewed.
>
> Thanks Peter! Not sure if you saw my Tested-by tag last week for the slavio (sun4m)
> parts, but there were no obvious regressions that I could see under qemu-system-sparc.

Yeah, I saw that, thanks for the testing. I decided that since
I'd added patch 1 I didn't quite feel comfortable carrying the
tested-by tag across.

thanks
-- PMM