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Date: Thu, 18 Jul 2013 18:23:58 +0200
From: Frederic Konrad <fred.konrad@greensocs.com>
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Subject: Re: [Qemu-devel] [RFC 1/3] icount: base rt_clock on icount.
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: mark.burton@greensocs.com, qemu-devel@nongnu.org

On 18/07/2013 17:36, Paolo Bonzini wrote:
> Il 18/07/2013 17:02, fred.konrad@greensocs.com ha scritto:
>> From: KONRAD Frederic <fred.konrad@greensocs.com>
>>
>> This bases rt_clock on icount, as vm_clock.
>> So vm_clock = rt_clock.
>>
>> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
>> ---
>>   qemu-timer.c | 6 +++++-
>>   1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/qemu-timer.c b/qemu-timer.c
>> index b2d95e2..6c607e5 100644
>> --- a/qemu-timer.c
>> +++ b/qemu-timer.c
>> @@ -401,7 +401,11 @@ int64_t qemu_get_clock_ns(QEMUClock *clock)
>>   
>>       switch(clock->type) {
>>       case QEMU_CLOCK_REALTIME:
>> -        return get_clock();
>> +        if (use_icount) {
>> +            return cpu_get_icount();
>> +        } else {
>> +            return get_clock();
>> +        }
>>       default:
>>       case QEMU_CLOCK_VIRTUAL:
>>           if (use_icount) {
>>
> rt_clock is very little used in general.  You should use "-rtc clock=vm"
> if you want to base the RTC on vm_clock.
>
> Paolo

True but it seems used in some place:

For example: ui/console.c:
ds->gui_timer = qemu_new_timer_ms(rt_clock, gui_update, ds);

Maybe it can cause trouble no?

Fred