When debugging QEMU it is often useful to put a breakpoint on the error_setg_internal method impl. Unfortunately the object_property_add / object_class_property_add methods call object_property_find / object_class_property_find methods to check if a property exists already before adding the new property. As a result there are a huge number of calls to error_setg_internal on startup of most QEMU commands, making it very painful to set a breakpoint on this method. Most callers of object_find_property and object_class_find_property, however, pass in a NULL for the Error parameter. This simplifies the methods to remove the Error parameter entirely, and then adds some new wrapper methods that are able to raise an Error when needed. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200914135617.1493072-1-berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
239 lines
7.1 KiB
C
239 lines
7.1 KiB
C
/*
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* QEMU monitor.c for ARM.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "hw/boards.h"
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#include "kvm_arm.h"
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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#include "qapi/qobject-input-visitor.h"
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#include "qapi/qapi-commands-machine-target.h"
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#include "qapi/qapi-commands-misc-target.h"
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#include "qapi/qmp/qerror.h"
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#include "qapi/qmp/qdict.h"
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#include "qom/qom-qobject.h"
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static GICCapability *gic_cap_new(int version)
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{
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GICCapability *cap = g_new0(GICCapability, 1);
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cap->version = version;
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/* by default, support none */
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cap->emulated = false;
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cap->kernel = false;
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return cap;
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}
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static GICCapabilityList *gic_cap_list_add(GICCapabilityList *head,
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GICCapability *cap)
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{
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GICCapabilityList *item = g_new0(GICCapabilityList, 1);
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item->value = cap;
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item->next = head;
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return item;
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}
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static inline void gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3)
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{
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#ifdef CONFIG_KVM
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int fdarray[3];
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if (!kvm_arm_create_scratch_host_vcpu(NULL, fdarray, NULL)) {
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return;
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}
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/* Test KVM GICv2 */
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if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V2)) {
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v2->kernel = true;
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}
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/* Test KVM GICv3 */
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if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V3)) {
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v3->kernel = true;
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}
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kvm_arm_destroy_scratch_host_vcpu(fdarray);
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#endif
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}
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GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
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{
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GICCapabilityList *head = NULL;
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GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3);
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v2->emulated = true;
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v3->emulated = true;
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gic_cap_kvm_probe(v2, v3);
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head = gic_cap_list_add(head, v2);
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head = gic_cap_list_add(head, v3);
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return head;
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}
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QEMU_BUILD_BUG_ON(ARM_MAX_VQ > 16);
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/*
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* These are cpu model features we want to advertise. The order here
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* matters as this is the order in which qmp_query_cpu_model_expansion
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* will attempt to set them. If there are dependencies between features,
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* then the order that considers those dependencies must be used.
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*/
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static const char *cpu_model_advertised_features[] = {
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"aarch64", "pmu", "sve",
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"sve128", "sve256", "sve384", "sve512",
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"sve640", "sve768", "sve896", "sve1024", "sve1152", "sve1280",
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"sve1408", "sve1536", "sve1664", "sve1792", "sve1920", "sve2048",
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"kvm-no-adjvtime",
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NULL
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};
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CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
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CpuModelInfo *model,
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Error **errp)
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{
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CpuModelExpansionInfo *expansion_info;
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const QDict *qdict_in = NULL;
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QDict *qdict_out;
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ObjectClass *oc;
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Object *obj;
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const char *name;
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int i;
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if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
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error_setg(errp, "The requested expansion type is not supported");
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return NULL;
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}
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if (!kvm_enabled() && !strcmp(model->name, "host")) {
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error_setg(errp, "The CPU type '%s' requires KVM", model->name);
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return NULL;
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}
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oc = cpu_class_by_name(TYPE_ARM_CPU, model->name);
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if (!oc) {
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error_setg(errp, "The CPU type '%s' is not a recognized ARM CPU type",
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model->name);
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return NULL;
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}
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if (kvm_enabled()) {
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bool supported = false;
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if (!strcmp(model->name, "host") || !strcmp(model->name, "max")) {
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/* These are kvmarm's recommended cpu types */
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supported = true;
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} else if (current_machine->cpu_type) {
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const char *cpu_type = current_machine->cpu_type;
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int len = strlen(cpu_type) - strlen(ARM_CPU_TYPE_SUFFIX);
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if (strlen(model->name) == len &&
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!strncmp(model->name, cpu_type, len)) {
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/* KVM is enabled and we're using this type, so it works. */
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supported = true;
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}
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}
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if (!supported) {
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error_setg(errp, "We cannot guarantee the CPU type '%s' works "
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"with KVM on this host", model->name);
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return NULL;
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}
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}
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if (model->props) {
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qdict_in = qobject_to(QDict, model->props);
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if (!qdict_in) {
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error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
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return NULL;
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}
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}
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obj = object_new(object_class_get_name(oc));
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if (qdict_in) {
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Visitor *visitor;
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Error *err = NULL;
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visitor = qobject_input_visitor_new(model->props);
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if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) {
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visit_free(visitor);
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object_unref(obj);
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return NULL;
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}
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i = 0;
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while ((name = cpu_model_advertised_features[i++]) != NULL) {
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if (qdict_get(qdict_in, name)) {
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if (!object_property_set(obj, name, visitor, &err)) {
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break;
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}
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}
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}
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if (!err) {
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visit_check_struct(visitor, &err);
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}
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if (!err) {
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arm_cpu_finalize_features(ARM_CPU(obj), &err);
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}
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visit_end_struct(visitor, NULL);
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visit_free(visitor);
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if (err) {
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object_unref(obj);
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error_propagate(errp, err);
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return NULL;
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}
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} else {
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arm_cpu_finalize_features(ARM_CPU(obj), &error_abort);
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}
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expansion_info = g_new0(CpuModelExpansionInfo, 1);
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expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
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expansion_info->model->name = g_strdup(model->name);
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qdict_out = qdict_new();
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i = 0;
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while ((name = cpu_model_advertised_features[i++]) != NULL) {
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ObjectProperty *prop = object_property_find(obj, name);
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if (prop) {
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QObject *value;
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assert(prop->get);
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value = object_property_get_qobject(obj, name, &error_abort);
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qdict_put_obj(qdict_out, name, value);
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}
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}
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if (!qdict_size(qdict_out)) {
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qobject_unref(qdict_out);
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} else {
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expansion_info->model->props = QOBJECT(qdict_out);
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expansion_info->model->has_props = true;
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}
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object_unref(obj);
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return expansion_info;
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}
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