# Re: \[PATCH RFC V3 2/4\] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks

- From: Raghavendra K T \<hidden\>
- Date: 2011-12-02 12:29:29 
- List: virtualization
- Page: https://ratatoskr.run/virtualization/2011/12/3794591
- Thread: https://ratatoskr.run/kvm/2011/11/3793529/t.md

```text
On 12/02/2011 01:20 AM, Raghavendra K T wrote:
>>> + struct kvm_mp_state mp_state;
>>> +
>>> + mp_state.mp_state = KVM_MP_STATE_RUNNABLE;
>>> + if (vcpu) {
>>> + vcpu->kicked = 1;
>>> + /* Ensure kicked is always set before wakeup */
>>> + barrier();
>>> + }
>>> + kvm_arch_vcpu_ioctl_set_mpstate(vcpu,&mp_state);
>>
>> This must only be called from the vcpu thread.
>
> Hmm. Okay. 'll check this.
>

Yes true. kvm_arch_vcpu_ioctl_set_mpstate itself is redundant, and will remove this.
```