2017-07-03 16:16 GMT+08:00 Paolo Bonzini :
>
>
> On 03/07/2017 10:08, Wanpeng Li wrote:
>>> Yeah, I'm not entirely satisfied with it but it's working: start_sw
>>> timer will see ktimer->pending and do nothing.
>>>
>>> But thinking more about it, maybe the "if (r)" can be omitted
>>> completely? W
On 03/07/2017 10:08, Wanpeng Li wrote:
>> Yeah, I'm not entirely satisfied with it but it's working: start_sw
>> timer will see ktimer->pending and do nothing.
>>
>> But thinking more about it, maybe the "if (r)" can be omitted
>> completely? We need to benchmark it but it can be done.
> "if (r)
2017-07-03 15:30 GMT+08:00 Paolo Bonzini :
>
>
> On 02/07/2017 03:56, Wanpeng Li wrote:
- if (!apic_lvtt_period(apic) && atomic_read(&ktimer->pending))
+ if (!apic_lvtt_period(apic) && (r ||
atomic_read(&ktimer->pending))) {
+ if (r)
+
On 02/07/2017 03:56, Wanpeng Li wrote:
>>> - if (!apic_lvtt_period(apic) && atomic_read(&ktimer->pending))
>>> + if (!apic_lvtt_period(apic) && (r ||
>>> atomic_read(&ktimer->pending))) {
>>> + if (r)
>>> + apic_timer_expired(apic);
>>>
2017-07-02 9:35 GMT+08:00 Wanpeng Li :
> 2017-06-30 0:58 GMT+08:00 Paolo Bonzini :
>> From: Wanpeng Li
>>
>> If the TSC deadline timer is programmed really close to the deadline or
>> even in the past, the computation in vmx_set_hv_timer will program the
>> absolute target tsc value to vmcs preemp
2017-06-30 0:58 GMT+08:00 Paolo Bonzini :
> From: Wanpeng Li
>
> If the TSC deadline timer is programmed really close to the deadline or
> even in the past, the computation in vmx_set_hv_timer will program the
> absolute target tsc value to vmcs preemption timer field w/ delta == 0.
> The next vme
From: Wanpeng Li
If the TSC deadline timer is programmed really close to the deadline or
even in the past, the computation in vmx_set_hv_timer will program the
absolute target tsc value to vmcs preemption timer field w/ delta == 0.
The next vmentry results in an immediate vmx preemption timer vme
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