KVM: ia64: Implement kvm_arch_vcpu_ioctl_{set,get}_mpstate

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>

1 files changed, 35 insertions, 2 deletions

diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index cd0d1a7284b7..7ad759e34295 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -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;
 }