diff options
Diffstat (limited to 'target-s390x/kvm.c')
| -rw-r--r-- | target-s390x/kvm.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index fd929e8351..7f745726bd 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -132,6 +132,8 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { KVM_CAP_LAST_INFO }; +static QemuMutex qemu_sigp_mutex; + static int cap_sync_regs; static int cap_async_pf; static int cap_mem_op; @@ -287,6 +289,8 @@ int kvm_arch_init(MachineState *ms, KVMState *s) } } + qemu_mutex_init(&qemu_sigp_mutex); + return 0; } @@ -1776,6 +1780,11 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) status_reg = &env->regs[r1]; param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1]; + if (qemu_mutex_trylock(&qemu_sigp_mutex)) { + ret = SIGP_CC_BUSY; + goto out; + } + switch (order) { case SIGP_SET_ARCH: ret = sigp_set_architecture(cpu, param, status_reg); @@ -1785,7 +1794,9 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) dst_cpu = s390_cpu_addr2state(env->regs[r3]); ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg); } + qemu_mutex_unlock(&qemu_sigp_mutex); +out: trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index, dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret); @@ -1990,7 +2001,7 @@ static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar) strcpy((char *)sysib.ext_names[0], "KVMguest"); } /* Insert UUID */ - memcpy(sysib.vm[0].uuid, qemu_uuid, sizeof(sysib.vm[0].uuid)); + memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid)); s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib)); } |