diff options
Diffstat (limited to 'arch/x86/kvm/xen.c')
| -rw-r--r-- | arch/x86/kvm/xen.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c index 5cbf6955e509..2712f1aa9ac9 100644 --- a/arch/x86/kvm/xen.c +++ b/arch/x86/kvm/xen.c @@ -120,15 +120,31 @@ int kvm_xen_hvm_get_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data) int kvm_xen_vcpu_set_attr(struct kvm_vcpu *vcpu, struct kvm_xen_vcpu_attr *data) { - int r = -ENOENT; + int idx, r = -ENOENT; mutex_lock(&vcpu->kvm->lock); + idx = srcu_read_lock(&vcpu->kvm->srcu); switch (data->type) { + case KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO: + /* No compat necessary here. */ + BUILD_BUG_ON(sizeof(struct vcpu_info) != + sizeof(struct compat_vcpu_info)); + + r = kvm_gfn_to_hva_cache_init(vcpu->kvm, + &vcpu->arch.xen.vcpu_info_cache, + data->u.gpa, + sizeof(struct vcpu_info)); + if (!r) + vcpu->arch.xen.vcpu_info_set = true; + break; + + default: break; } + srcu_read_unlock(&vcpu->kvm->srcu, idx); mutex_unlock(&vcpu->kvm->lock); return r; } @@ -140,6 +156,13 @@ int kvm_xen_vcpu_get_attr(struct kvm_vcpu *vcpu, struct kvm_xen_vcpu_attr *data) mutex_lock(&vcpu->kvm->lock); switch (data->type) { + case KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO: + if (vcpu->arch.xen.vcpu_info_set) { + data->u.gpa = vcpu->arch.xen.vcpu_info_cache.gpa; + r = 0; + } + break; + default: break; } |