diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 92ecbc78ff30a275f7891f1503e70ab7eb2cb4f9..03d8d4afa40f4c54b1a29c42575a8b4482590030 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -369,6 +369,16 @@ int kvm_unpark_vcpu(KVMState *s, unsigned long vcpu_id) return kvm_fd; } +static void kvm_reset_parked_vcpus(void *param) +{ + KVMState *s = param; + struct KVMParkedVcpu *cpu; + + QLIST_FOREACH(cpu, &s->kvm_parked_vcpus, node) { + kvm_arch_reset_parked_vcpu(cpu->vcpu_id, cpu->kvm_fd); + } +} + int kvm_create_vcpu(CPUState *cpu) { unsigned long vcpu_id = kvm_arch_vcpu_id(cpu); @@ -2724,6 +2734,7 @@ static int kvm_init(MachineState *ms) } qemu_register_reset(kvm_unpoison_all, NULL); + qemu_register_reset(kvm_reset_parked_vcpus, s); if (s->kernel_irqchip_allowed) { kvm_irqchip_create(s); diff --git a/configs/targets/i386-softmmu.mak b/configs/targets/i386-softmmu.mak index 6b3c99fc86c59efd08fec5b3a7793ba8ef286fb0..131b51b28e5b158f3adafaa968000e3ba6ed442d 100644 --- a/configs/targets/i386-softmmu.mak +++ b/configs/targets/i386-softmmu.mak @@ -1,4 +1,5 @@ TARGET_ARCH=i386 TARGET_SUPPORTS_MTTCG=y TARGET_NEED_FDT=y +TARGET_KVM_HAVE_RESET_PARKED_VCPU=y TARGET_XML_FILES= gdb-xml/i386-32bit.xml diff --git a/configs/targets/x86_64-softmmu.mak b/configs/targets/x86_64-softmmu.mak index 197817c94346d6da067f6abf36672e07ddd12cc4..3d6f6fcc536a97d7fb23ee40ca0e77b5dbfb086d 100644 --- a/configs/targets/x86_64-softmmu.mak +++ b/configs/targets/x86_64-softmmu.mak @@ -2,4 +2,5 @@ TARGET_ARCH=x86_64 TARGET_BASE_ARCH=i386 TARGET_SUPPORTS_MTTCG=y TARGET_NEED_FDT=y +TARGET_KVM_HAVE_RESET_PARKED_VCPU=y TARGET_XML_FILES= gdb-xml/i386-64bit.xml diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 4669c070d634fb7ab897c0bea6b2604ab756e2b3..01c08148654d03acc051215c97eb7ecfb062cbdc 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -401,6 +401,14 @@ int kvm_arch_init(MachineState *ms, KVMState *s); int kvm_arch_init_vcpu(CPUState *cpu); int kvm_arch_destroy_vcpu(CPUState *cpu); +#ifdef TARGET_KVM_HAVE_RESET_PARKED_VCPU +void kvm_arch_reset_parked_vcpu(unsigned long vcpu_id, int kvm_fd); +#else +static inline void kvm_arch_reset_parked_vcpu(unsigned long vcpu_id, int kvm_fd) +{ +} +#endif + bool kvm_vcpu_id_is_valid(int vcpu_id); /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index b959e9caf414a0b4145cee2558d2dc06a453e370..f7ef33ea819064a1bd0e007353085b690a5b5069 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2302,6 +2302,21 @@ void kvm_arch_after_reset_vcpu(X86CPU *cpu) } } +void kvm_arch_reset_parked_vcpu(unsigned long vcpu_id, int kvm_fd) +{ + g_autofree struct kvm_msrs *msrs = NULL; + + msrs = g_malloc0(sizeof(*msrs) + sizeof(msrs->entries[0])); + msrs->entries[0].index = MSR_IA32_TSC; + msrs->entries[0].data = 1; /* match the value in x86_cpu_reset() */ + msrs->nmsrs++; + + if (ioctl(kvm_fd, KVM_SET_MSRS, msrs) != 1) { + warn_report("parked vCPU %lu TSC reset failed: %d", + vcpu_id, errno); + } +} + void kvm_arch_do_init_vcpu(X86CPU *cpu) { CPUX86State *env = &cpu->env;