diff options
Diffstat (limited to 'accel')
| -rw-r--r-- | accel/kvm/kvm-all.c | 122 | ||||
| -rw-r--r-- | accel/kvm/kvm-cpus.h | 1 | ||||
| -rw-r--r-- | accel/kvm/trace-events | 5 | ||||
| -rw-r--r-- | accel/stubs/tcg-stub.c | 14 |
4 files changed, 94 insertions, 48 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 64bf47a033..67b773692f 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -340,14 +340,71 @@ err: return ret; } +void kvm_park_vcpu(CPUState *cpu) +{ + struct KVMParkedVcpu *vcpu; + + trace_kvm_park_vcpu(cpu->cpu_index, kvm_arch_vcpu_id(cpu)); + + vcpu = g_malloc0(sizeof(*vcpu)); + vcpu->vcpu_id = kvm_arch_vcpu_id(cpu); + vcpu->kvm_fd = cpu->kvm_fd; + QLIST_INSERT_HEAD(&kvm_state->kvm_parked_vcpus, vcpu, node); +} + +int kvm_unpark_vcpu(KVMState *s, unsigned long vcpu_id) +{ + struct KVMParkedVcpu *cpu; + int kvm_fd = -ENOENT; + + QLIST_FOREACH(cpu, &s->kvm_parked_vcpus, node) { + if (cpu->vcpu_id == vcpu_id) { + QLIST_REMOVE(cpu, node); + kvm_fd = cpu->kvm_fd; + g_free(cpu); + } + } + + trace_kvm_unpark_vcpu(vcpu_id, kvm_fd > 0 ? "unparked" : "!found parked"); + + return kvm_fd; +} + +int kvm_create_vcpu(CPUState *cpu) +{ + unsigned long vcpu_id = kvm_arch_vcpu_id(cpu); + KVMState *s = kvm_state; + int kvm_fd; + + /* check if the KVM vCPU already exist but is parked */ + kvm_fd = kvm_unpark_vcpu(s, vcpu_id); + if (kvm_fd < 0) { + /* vCPU not parked: create a new KVM vCPU */ + kvm_fd = kvm_vm_ioctl(s, KVM_CREATE_VCPU, vcpu_id); + if (kvm_fd < 0) { + error_report("KVM_CREATE_VCPU IOCTL failed for vCPU %lu", vcpu_id); + return kvm_fd; + } + } + + cpu->kvm_fd = kvm_fd; + cpu->kvm_state = s; + cpu->vcpu_dirty = true; + cpu->dirty_pages = 0; + cpu->throttle_us_per_full = 0; + + trace_kvm_create_vcpu(cpu->cpu_index, vcpu_id, kvm_fd); + + return 0; +} + static int do_kvm_destroy_vcpu(CPUState *cpu) { KVMState *s = kvm_state; long mmap_size; - struct KVMParkedVcpu *vcpu = NULL; int ret = 0; - trace_kvm_destroy_vcpu(); + trace_kvm_destroy_vcpu(cpu->cpu_index, kvm_arch_vcpu_id(cpu)); ret = kvm_arch_destroy_vcpu(cpu); if (ret < 0) { @@ -373,10 +430,7 @@ static int do_kvm_destroy_vcpu(CPUState *cpu) } } - vcpu = g_malloc0(sizeof(*vcpu)); - vcpu->vcpu_id = kvm_arch_vcpu_id(cpu); - vcpu->kvm_fd = cpu->kvm_fd; - QLIST_INSERT_HEAD(&kvm_state->kvm_parked_vcpus, vcpu, node); + kvm_park_vcpu(cpu); err: return ret; } @@ -389,24 +443,6 @@ void kvm_destroy_vcpu(CPUState *cpu) } } -static int kvm_get_vcpu(KVMState *s, unsigned long vcpu_id) -{ - struct KVMParkedVcpu *cpu; - - QLIST_FOREACH(cpu, &s->kvm_parked_vcpus, node) { - if (cpu->vcpu_id == vcpu_id) { - int kvm_fd; - - QLIST_REMOVE(cpu, node); - kvm_fd = cpu->kvm_fd; - g_free(cpu); - return kvm_fd; - } - } - - return kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)vcpu_id); -} - int kvm_init_vcpu(CPUState *cpu, Error **errp) { KVMState *s = kvm_state; @@ -415,19 +451,14 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp) trace_kvm_init_vcpu(cpu->cpu_index, kvm_arch_vcpu_id(cpu)); - ret = kvm_get_vcpu(s, kvm_arch_vcpu_id(cpu)); + ret = kvm_create_vcpu(cpu); if (ret < 0) { - error_setg_errno(errp, -ret, "kvm_init_vcpu: kvm_get_vcpu failed (%lu)", + error_setg_errno(errp, -ret, + "kvm_init_vcpu: kvm_create_vcpu failed (%lu)", kvm_arch_vcpu_id(cpu)); goto err; } - cpu->kvm_fd = ret; - cpu->kvm_state = s; - cpu->vcpu_dirty = true; - cpu->dirty_pages = 0; - cpu->throttle_us_per_full = 0; - mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); if (mmap_size < 0) { ret = mmap_size; @@ -3745,6 +3776,21 @@ static void kvm_set_device(Object *obj, s->device = g_strdup(value); } +static void kvm_set_kvm_rapl(Object *obj, bool value, Error **errp) +{ + KVMState *s = KVM_STATE(obj); + s->msr_energy.enable = value; +} + +static void kvm_set_kvm_rapl_socket_path(Object *obj, + const char *str, + Error **errp) +{ + KVMState *s = KVM_STATE(obj); + g_free(s->msr_energy.socket_path); + s->msr_energy.socket_path = g_strdup(str); +} + static void kvm_accel_instance_init(Object *obj) { KVMState *s = KVM_STATE(obj); @@ -3764,6 +3810,7 @@ static void kvm_accel_instance_init(Object *obj) s->xen_gnttab_max_frames = 64; s->xen_evtchn_max_pirq = 256; s->device = NULL; + s->msr_energy.enable = false; } /** @@ -3808,6 +3855,17 @@ static void kvm_accel_class_init(ObjectClass *oc, void *data) object_class_property_set_description(oc, "device", "Path to the device node to use (default: /dev/kvm)"); + object_class_property_add_bool(oc, "rapl", + NULL, + kvm_set_kvm_rapl); + object_class_property_set_description(oc, "rapl", + "Allow energy related MSRs for RAPL interface in Guest"); + + object_class_property_add_str(oc, "rapl-helper-socket", NULL, + kvm_set_kvm_rapl_socket_path); + object_class_property_set_description(oc, "rapl-helper-socket", + "Socket Path for comminucating with the Virtual MSR helper daemon"); + kvm_arch_accel_class_init(oc); } diff --git a/accel/kvm/kvm-cpus.h b/accel/kvm/kvm-cpus.h index ca40add32c..171b22fd29 100644 --- a/accel/kvm/kvm-cpus.h +++ b/accel/kvm/kvm-cpus.h @@ -22,5 +22,4 @@ bool kvm_supports_guest_debug(void); int kvm_insert_breakpoint(CPUState *cpu, int type, vaddr addr, vaddr len); int kvm_remove_breakpoint(CPUState *cpu, int type, vaddr addr, vaddr len); void kvm_remove_all_breakpoints(CPUState *cpu); - #endif /* KVM_CPUS_H */ diff --git a/accel/kvm/trace-events b/accel/kvm/trace-events index 681ccb667d..37626c1ac5 100644 --- a/accel/kvm/trace-events +++ b/accel/kvm/trace-events @@ -9,6 +9,10 @@ kvm_device_ioctl(int fd, int type, void *arg) "dev fd %d, type 0x%x, arg %p" kvm_failed_reg_get(uint64_t id, const char *msg) "Warning: Unable to retrieve ONEREG %" PRIu64 " from KVM: %s" kvm_failed_reg_set(uint64_t id, const char *msg) "Warning: Unable to set ONEREG %" PRIu64 " to KVM: %s" kvm_init_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu" +kvm_create_vcpu(int cpu_index, unsigned long arch_cpu_id, int kvm_fd) "index: %d, id: %lu, kvm fd: %d" +kvm_destroy_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu" +kvm_park_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu" +kvm_unpark_vcpu(unsigned long arch_cpu_id, const char *msg) "id: %lu %s" kvm_irqchip_commit_routes(void) "" kvm_irqchip_add_msi_route(char *name, int vector, int virq) "dev %s vector %d virq %d" kvm_irqchip_update_msi_route(int virq) "Updating MSI route virq=%d" @@ -25,7 +29,6 @@ kvm_dirty_ring_reaper(const char *s) "%s" kvm_dirty_ring_reap(uint64_t count, int64_t t) "reaped %"PRIu64" pages (took %"PRIi64" us)" kvm_dirty_ring_reaper_kick(const char *reason) "%s" kvm_dirty_ring_flush(int finished) "%d" -kvm_destroy_vcpu(void) "" kvm_failed_get_vcpu_mmap_size(void) "" kvm_cpu_exec(void) "" kvm_interrupt_exit_request(void) "" diff --git a/accel/stubs/tcg-stub.c b/accel/stubs/tcg-stub.c index dd890d6cf6..7f4208fddf 100644 --- a/accel/stubs/tcg-stub.c +++ b/accel/stubs/tcg-stub.c @@ -18,20 +18,6 @@ void tb_flush(CPUState *cpu) { } -int probe_access_flags(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool nonfault, void **phost, uintptr_t retaddr) -{ - g_assert_not_reached(); -} - -void *probe_access(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, uintptr_t retaddr) -{ - /* Handled by hardware accelerator. */ - g_assert_not_reached(); -} - G_NORETURN void cpu_loop_exit(CPUState *cpu) { g_assert_not_reached(); |