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qemu-e2k/hw/core/machine-qmp-cmds.c
Eric Blake 95b3a8c8a8 qapi: More complex uses of QAPI_LIST_APPEND 
These cases require a bit more thought to review; in each case, the
code was appending to a list, but not with a FOOList **tail variable.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210113221013.390592-6-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Flawed change to qmp_guest_network_get_interfaces() dropped]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2021-01-28 08:08:45 +01:00

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/*
* QMP commands related to machines and CPUs
*
* Copyright (C) 2014 Red Hat Inc
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "hw/boards.h"
#include "qapi/error.h"
#include "qapi/qapi-builtin-visit.h"
#include "qapi/qapi-commands-machine.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qobject.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/main-loop.h"
#include "qom/qom-qobject.h"
#include "sysemu/hostmem.h"
#include "sysemu/hw_accel.h"
#include "sysemu/numa.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
CpuInfoList *qmp_query_cpus(Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
CpuInfoList *head = NULL, **tail = &head;
CPUState *cpu;
CPU_FOREACH(cpu) {
CpuInfo *value;
#if defined(TARGET_I386)
X86CPU *x86_cpu = X86_CPU(cpu);
CPUX86State *env = &x86_cpu->env;
#elif defined(TARGET_PPC)
PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu);
CPUPPCState *env = &ppc_cpu->env;
#elif defined(TARGET_SPARC)
SPARCCPU *sparc_cpu = SPARC_CPU(cpu);
CPUSPARCState *env = &sparc_cpu->env;
#elif defined(TARGET_RISCV)
RISCVCPU *riscv_cpu = RISCV_CPU(cpu);
CPURISCVState *env = &riscv_cpu->env;
#elif defined(TARGET_MIPS)
MIPSCPU *mips_cpu = MIPS_CPU(cpu);
CPUMIPSState *env = &mips_cpu->env;
#elif defined(TARGET_TRICORE)
TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu);
CPUTriCoreState *env = &tricore_cpu->env;
#elif defined(TARGET_S390X)
S390CPU *s390_cpu = S390_CPU(cpu);
CPUS390XState *env = &s390_cpu->env;
#endif
cpu_synchronize_state(cpu);
value = g_malloc0(sizeof(*value));
value->CPU = cpu->cpu_index;
value->current = (cpu == first_cpu);
value->halted = cpu->halted;
value->qom_path = object_get_canonical_path(OBJECT(cpu));
value->thread_id = cpu->thread_id;
#if defined(TARGET_I386)
value->arch = CPU_INFO_ARCH_X86;
value->u.x86.pc = env->eip + env->segs[R_CS].base;
#elif defined(TARGET_PPC)
value->arch = CPU_INFO_ARCH_PPC;
value->u.ppc.nip = env->nip;
#elif defined(TARGET_SPARC)
value->arch = CPU_INFO_ARCH_SPARC;
value->u.q_sparc.pc = env->pc;
value->u.q_sparc.npc = env->npc;
#elif defined(TARGET_MIPS)
value->arch = CPU_INFO_ARCH_MIPS;
value->u.q_mips.PC = env->active_tc.PC;
#elif defined(TARGET_TRICORE)
value->arch = CPU_INFO_ARCH_TRICORE;
value->u.tricore.PC = env->PC;
#elif defined(TARGET_S390X)
value->arch = CPU_INFO_ARCH_S390;
value->u.s390.cpu_state = env->cpu_state;
#elif defined(TARGET_RISCV)
value->arch = CPU_INFO_ARCH_RISCV;
value->u.riscv.pc = env->pc;
#else
value->arch = CPU_INFO_ARCH_OTHER;
#endif
value->has_props = !!mc->cpu_index_to_instance_props;
if (value->has_props) {
CpuInstanceProperties *props;
props = g_malloc0(sizeof(*props));
*props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index);
value->props = props;
}
QAPI_LIST_APPEND(tail, value);
}
return head;
}
static CpuInfoArch sysemu_target_to_cpuinfo_arch(SysEmuTarget target)
{
/*
* The @SysEmuTarget -> @CpuInfoArch mapping below is based on the
* TARGET_ARCH -> TARGET_BASE_ARCH mapping in the "configure" script.
*/
switch (target) {
case SYS_EMU_TARGET_I386:
case SYS_EMU_TARGET_X86_64:
return CPU_INFO_ARCH_X86;
case SYS_EMU_TARGET_PPC:
case SYS_EMU_TARGET_PPC64:
return CPU_INFO_ARCH_PPC;
case SYS_EMU_TARGET_SPARC:
case SYS_EMU_TARGET_SPARC64:
return CPU_INFO_ARCH_SPARC;
case SYS_EMU_TARGET_MIPS:
case SYS_EMU_TARGET_MIPSEL:
case SYS_EMU_TARGET_MIPS64:
case SYS_EMU_TARGET_MIPS64EL:
return CPU_INFO_ARCH_MIPS;
case SYS_EMU_TARGET_TRICORE:
return CPU_INFO_ARCH_TRICORE;
case SYS_EMU_TARGET_S390X:
return CPU_INFO_ARCH_S390;
case SYS_EMU_TARGET_RISCV32:
case SYS_EMU_TARGET_RISCV64:
return CPU_INFO_ARCH_RISCV;
default:
return CPU_INFO_ARCH_OTHER;
}
}
static void cpustate_to_cpuinfo_s390(CpuInfoS390 *info, const CPUState *cpu)
{
#ifdef TARGET_S390X
S390CPU *s390_cpu = S390_CPU(cpu);
CPUS390XState *env = &s390_cpu->env;
info->cpu_state = env->cpu_state;
#else
abort();
#endif
}
/*
* fast means: we NEVER interrupt vCPU threads to retrieve
* information from KVM.
*/
CpuInfoFastList *qmp_query_cpus_fast(Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
CpuInfoFastList *head = NULL, **tail = &head;
SysEmuTarget target = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME,
-1, &error_abort);
CPUState *cpu;
CPU_FOREACH(cpu) {
CpuInfoFast *value = g_malloc0(sizeof(*value));
value->cpu_index = cpu->cpu_index;
value->qom_path = object_get_canonical_path(OBJECT(cpu));
value->thread_id = cpu->thread_id;
value->has_props = !!mc->cpu_index_to_instance_props;
if (value->has_props) {
CpuInstanceProperties *props;
props = g_malloc0(sizeof(*props));
*props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index);
value->props = props;
}
value->arch = sysemu_target_to_cpuinfo_arch(target);
value->target = target;
if (target == SYS_EMU_TARGET_S390X) {
cpustate_to_cpuinfo_s390(&value->u.s390x, cpu);
}
QAPI_LIST_APPEND(tail, value);
}
return head;
}
MachineInfoList *qmp_query_machines(Error **errp)
{
GSList *el, *machines = object_class_get_list(TYPE_MACHINE, false);
MachineInfoList *mach_list = NULL;
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
MachineInfo *info;
info = g_malloc0(sizeof(*info));
if (mc->is_default) {
info->has_is_default = true;
info->is_default = true;
}
if (mc->alias) {
info->has_alias = true;
info->alias = g_strdup(mc->alias);
}
info->name = g_strdup(mc->name);
info->cpu_max = !mc->max_cpus ? 1 : mc->max_cpus;
info->hotpluggable_cpus = mc->has_hotpluggable_cpus;
info->numa_mem_supported = mc->numa_mem_supported;
info->deprecated = !!mc->deprecation_reason;
if (mc->default_cpu_type) {
info->default_cpu_type = g_strdup(mc->default_cpu_type);
info->has_default_cpu_type = true;
}
if (mc->default_ram_id) {
info->default_ram_id = g_strdup(mc->default_ram_id);
info->has_default_ram_id = true;
}
QAPI_LIST_PREPEND(mach_list, info);
}
g_slist_free(machines);
return mach_list;
}
CurrentMachineParams *qmp_query_current_machine(Error **errp)
{
CurrentMachineParams *params = g_malloc0(sizeof(*params));
params->wakeup_suspend_support = qemu_wakeup_suspend_enabled();
return params;
}
TargetInfo *qmp_query_target(Error **errp)
{
TargetInfo *info = g_malloc0(sizeof(*info));
info->arch = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, -1,
&error_abort);
return info;
}
HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
if (!mc->has_hotpluggable_cpus) {
error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
return NULL;
}
return machine_query_hotpluggable_cpus(ms);
}
void qmp_set_numa_node(NumaOptions *cmd, Error **errp)
{
if (phase_check(PHASE_MACHINE_INITIALIZED)) {
error_setg(errp, "The command is permitted only before the machine has been created");
return;
}
set_numa_options(MACHINE(qdev_get_machine()), cmd, errp);
}
static int query_memdev(Object *obj, void *opaque)
{
MemdevList **list = opaque;
Memdev *m;
QObject *host_nodes;
Visitor *v;
if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) {
m = g_malloc0(sizeof(*m));
m->id = g_strdup(object_get_canonical_path_component(obj));
m->has_id = !!m->id;
m->size = object_property_get_uint(obj, "size", &error_abort);
m->merge = object_property_get_bool(obj, "merge", &error_abort);
m->dump = object_property_get_bool(obj, "dump", &error_abort);
m->prealloc = object_property_get_bool(obj, "prealloc", &error_abort);
m->policy = object_property_get_enum(obj, "policy", "HostMemPolicy",
&error_abort);
host_nodes = object_property_get_qobject(obj,
"host-nodes",
&error_abort);
v = qobject_input_visitor_new(host_nodes);
visit_type_uint16List(v, NULL, &m->host_nodes, &error_abort);
visit_free(v);
qobject_unref(host_nodes);
QAPI_LIST_PREPEND(*list, m);
}
return 0;
}
MemdevList *qmp_query_memdev(Error **errp)
{
Object *obj = object_get_objects_root();
MemdevList *list = NULL;
object_child_foreach(obj, query_memdev, &list);
return list;
}
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