KVM: ia64: Implement kvm_arch_vcpu_ioctl_{set,get}_mpstate
Xiantao Zhang [Thu, 28 Aug 2008 01:34:08 +0000 (09:34 +0800)]
Two ioctl arch functions are added to set vcpu's smp state.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

arch/ia64/kvm/kvm-ia64.c

index cd0d1a7..7ad759e 100644 (file)
@@ -179,6 +179,7 @@ int kvm_dev_ioctl_check_extension(long ext)
        switch (ext) {
        case KVM_CAP_IRQCHIP:
        case KVM_CAP_USER_MEMORY:
+       case KVM_CAP_MP_STATE:
 
                r = 1;
                break;
@@ -1789,11 +1790,43 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
 {
-       return -EINVAL;
+       vcpu_load(vcpu);
+       mp_state->mp_state = vcpu->arch.mp_state;
+       vcpu_put(vcpu);
+       return 0;
+}
+
+static int vcpu_reset(struct kvm_vcpu *vcpu)
+{
+       int r;
+       long psr;
+       local_irq_save(psr);
+       r = kvm_insert_vmm_mapping(vcpu);
+       if (r)
+               goto fail;
+
+       vcpu->arch.launched = 0;
+       kvm_arch_vcpu_uninit(vcpu);
+       r = kvm_arch_vcpu_init(vcpu);
+       if (r)
+               goto fail;
+
+       kvm_purge_vmm_mapping(vcpu);
+       r = 0;
+fail:
+       local_irq_restore(psr);
+       return r;
 }
 
 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
 {
-       return -EINVAL;
+       int r = 0;
+
+       vcpu_load(vcpu);
+       vcpu->arch.mp_state = mp_state->mp_state;
+       if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
+               r = vcpu_reset(vcpu);
+       vcpu_put(vcpu);
+       return r;
 }