Avi Kivity wrote:
> Zhang, Xiantao wrote:
>> Han, Weidong wrote:
>>
>>> #ifdef CONFIG_DMAR
>>> int intel_iommu_found(void);
>>> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
>>> index 73b7c52..7a3e1b6 100644 --- a/include/linux/kvm_host.h
>>> +++ b/include/linux/kvm_host.h
>>> @@ -293,6 +293,11 @@ struct kvm_irq_ack_notifier {
>>> void (*irq_acked)(struct kvm_irq_ack_notifier *kian); };
>>>
>>> +struct kvm_vtd_domain {
>>> + int dev_count; /* number of assigned devices */
>>>
>>
>> Atomic operations are needed for this field?
>>
>
> Probably not, since it is protected by the kvm lock.
Okay, it should have no problem if kvm_lock is acquired before operating
this field :)
Xiantao
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