diff options
Diffstat (limited to 'target/i386/kvm.c')
| -rw-r--r-- | target/i386/kvm.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index cf6270a..7b7a565 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -734,8 +734,18 @@ static int hyperv_handle_properties(CPUState *cs) env->features[FEAT_HYPERV_EAX] |= HV_VP_RUNTIME_AVAILABLE; } if (cpu->hyperv_synic) { - if (!has_msr_hv_synic || - !kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_SYNIC)) { + unsigned int cap = KVM_CAP_HYPERV_SYNIC; + if (!cpu->hyperv_synic_kvm_only) { + if (!cpu->hyperv_vpindex) { + fprintf(stderr, "Hyper-V SynIC " + "(requested by 'hv-synic' cpu flag) " + "requires Hyper-V VP_INDEX ('hv-vpindex')\n"); + return -ENOSYS; + } + cap = KVM_CAP_HYPERV_SYNIC2; + } + + if (!has_msr_hv_synic || !kvm_check_extension(cs->kvm_state, cap)) { fprintf(stderr, "Hyper-V SynIC (requested by 'hv-synic' cpu flag) " "is not supported by kernel\n"); return -ENOSYS; @@ -784,18 +794,22 @@ static int hyperv_init_vcpu(X86CPU *cpu) } if (cpu->hyperv_synic) { - ret = kvm_vcpu_enable_cap(cs, KVM_CAP_HYPERV_SYNIC, 0); + uint32_t synic_cap = cpu->hyperv_synic_kvm_only ? + KVM_CAP_HYPERV_SYNIC : KVM_CAP_HYPERV_SYNIC2; + ret = kvm_vcpu_enable_cap(cs, synic_cap, 0); if (ret < 0) { error_report("failed to turn on HyperV SynIC in KVM: %s", strerror(-ret)); return ret; } - ret = hyperv_x86_synic_add(cpu); - if (ret < 0) { - error_report("failed to create HyperV SynIC: %s", - strerror(-ret)); - return ret; + if (!cpu->hyperv_synic_kvm_only) { + ret = hyperv_x86_synic_add(cpu); + if (ret < 0) { + error_report("failed to create HyperV SynIC: %s", + strerror(-ret)); + return ret; + } } } |