KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR

[linux-2.6-microblaze.git] / arch / powerpc / kvm / book3s_hv.c

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index b37bddf..dffbfd1 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -5642,6 +5642,17 @@ out:
        return ret;
 }
 
+static int kvmhv_enable_dawr1(struct kvm *kvm)
+{
+       if (!cpu_has_feature(CPU_FTR_DAWR1))
+               return -ENODEV;
+
+       /* kvm == NULL means the caller is testing if the capability exists */
+       if (kvm)
+               kvm->arch.dawr1_enabled = true;
+       return 0;
+}
+
 static struct kvmppc_ops kvm_ops_hv = {
        .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_hv,
        .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_hv,
@@ -5685,6 +5696,7 @@ static struct kvmppc_ops kvm_ops_hv = {
        .store_to_eaddr = kvmhv_store_to_eaddr,
        .enable_svm = kvmhv_enable_svm,
        .svm_off = kvmhv_svm_off,
+       .enable_dawr1 = kvmhv_enable_dawr1,
 };
 
 static int kvm_init_subcore_bitmap(void)