diff options
Diffstat (limited to 'target-arm/kvm.c')
| -rw-r--r-- | target-arm/kvm.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target-arm/kvm.c b/target-arm/kvm.c index 72c1fa1e64..fdd9ba3f1d 100644 --- a/target-arm/kvm.c +++ b/target-arm/kvm.c @@ -28,6 +28,8 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { KVM_CAP_LAST_INFO }; +static bool cap_has_mp_state; + int kvm_arm_vcpu_init(CPUState *cs) { ARMCPU *cpu = ARM_CPU(cs); @@ -157,6 +159,8 @@ int kvm_arch_init(MachineState *ms, KVMState *s) */ kvm_async_interrupts_allowed = true; + cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); + type_register_static(&host_arm_cpu_type_info); return 0; @@ -458,6 +462,46 @@ void kvm_arm_reset_vcpu(ARMCPU *cpu) } } +/* + * Update KVM's MP_STATE based on what QEMU thinks it is + */ +int kvm_arm_sync_mpstate_to_kvm(ARMCPU *cpu) +{ + if (cap_has_mp_state) { + struct kvm_mp_state mp_state = { + .mp_state = + cpu->powered_off ? KVM_MP_STATE_STOPPED : KVM_MP_STATE_RUNNABLE + }; + int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); + if (ret) { + fprintf(stderr, "%s: failed to set MP_STATE %d/%s\n", + __func__, ret, strerror(-ret)); + return -1; + } + } + + return 0; +} + +/* + * Sync the KVM MP_STATE into QEMU + */ +int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu) +{ + if (cap_has_mp_state) { + struct kvm_mp_state mp_state; + int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_MP_STATE, &mp_state); + if (ret) { + fprintf(stderr, "%s: failed to get MP_STATE %d/%s\n", + __func__, ret, strerror(-ret)); + abort(); + } + cpu->powered_off = (mp_state.mp_state == KVM_MP_STATE_STOPPED); + } + + return 0; +} + void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run) { } |