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add lock for vcpu state access
keep the global variables access exclusive in vcpu pause & resume. Signed-]off-by: Minggui Cao <minggui.cao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
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@ -280,10 +280,10 @@ void pause_vcpu(struct vcpu *vcpu, enum vcpu_state new_state)
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pr_dbg("vcpu%d paused, new state: %d",
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vcpu->vcpu_id, new_state);
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get_schedule_lock(vcpu->pcpu_id);
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vcpu->prev_state = vcpu->state;
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vcpu->state = new_state;
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get_schedule_lock(vcpu->pcpu_id);
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if (atomic_load(&vcpu->running) == 1) {
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remove_vcpu_from_runqueue(vcpu);
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make_reschedule_request(vcpu);
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@ -303,9 +303,9 @@ void resume_vcpu(struct vcpu *vcpu)
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{
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pr_dbg("vcpu%d resumed", vcpu->vcpu_id);
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get_schedule_lock(vcpu->pcpu_id);
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vcpu->state = vcpu->prev_state;
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get_schedule_lock(vcpu->pcpu_id);
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if (vcpu->state == VCPU_RUNNING) {
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add_vcpu_to_runqueue(vcpu);
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make_reschedule_request(vcpu);
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