qapi: make query-cpu-definitions depend on specific targets

It depends on TARGET_PPC || TARGET_ARM || TARGET_I386 || TARGET_S390X.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190214152251.2073-15-armbru@redhat.com>

include/sysemu/arch_init.h

@@ -32,5 +32,4 @@ extern const uint32_t arch_type;
 int kvm_available(void);
 int xen_available(void);
 
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp);
 #endif

monitor.c

@@ -1131,26 +1131,6 @@ static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
     *ret_data = qobject_from_qlit(&qmp_schema_qlit);
 }
 
-/*
- * We used to define commands in qmp-commands.hx in addition to the
- * QAPI schema.  This permitted defining some of them only in certain
- * configurations.  query-commands has always reflected that (good,
- * because it lets QMP clients figure out what's actually available),
- * while query-qmp-schema never did (not so good).  This function is a
- * hack to keep the configuration-specific commands defined exactly as
- * before, even though qmp-commands.hx is gone.
- *
- * FIXME Educate the QAPI schema on configuration-specific commands,
- * and drop this hack.
- */
-static void qmp_unregister_commands_hack(void)
-{
-#if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
-    && !defined(TARGET_S390X)
-    qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
-#endif
-}
-
 static void monitor_init_qmp_commands(void)
 {
     /*
@@ -1169,8 +1149,6 @@ static void monitor_init_qmp_commands(void)
     qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
                          QCO_NO_OPTIONS);
 
-    qmp_unregister_commands_hack();
-
     QTAILQ_INIT(&qmp_cap_negotiation_commands);
     qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
                          qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG);

qapi/misc.json

@@ -2057,54 +2057,6 @@
 ##
 { 'command': 'query-current-machine', 'returns': 'CurrentMachineParams' }
 
-##
-# @CpuDefinitionInfo:
-#
-# Virtual CPU definition.
-#
-# @name: the name of the CPU definition
-#
-# @migration-safe: whether a CPU definition can be safely used for
-#                  migration in combination with a QEMU compatibility machine
-#                  when migrating between different QEMU versions and between
-#                  hosts with different sets of (hardware or software)
-#                  capabilities. If not provided, information is not available
-#                  and callers should not assume the CPU definition to be
-#                  migration-safe. (since 2.8)
-#
-# @static: whether a CPU definition is static and will not change depending on
-#          QEMU version, machine type, machine options and accelerator options.
-#          A static model is always migration-safe. (since 2.8)
-#
-# @unavailable-features: List of properties that prevent
-#                        the CPU model from running in the current
-#                        host. (since 2.8)
-# @typename: Type name that can be used as argument to @device-list-properties,
-#            to introspect properties configurable using -cpu or -global.
-#            (since 2.9)
-#
-# @unavailable-features is a list of QOM property names that
-# represent CPU model attributes that prevent the CPU from running.
-# If the QOM property is read-only, that means there's no known
-# way to make the CPU model run in the current host. Implementations
-# that choose not to provide specific information return the
-# property name "type".
-# If the property is read-write, it means that it MAY be possible
-# to run the CPU model in the current host if that property is
-# changed. Management software can use it as hints to suggest or
-# choose an alternative for the user, or just to generate meaningful
-# error messages explaining why the CPU model can't be used.
-# If @unavailable-features is an empty list, the CPU model is
-# runnable using the current host and machine-type.
-# If @unavailable-features is not present, runnability
-# information for the CPU is not available.
-#
-# Since: 1.2.0
-##
-{ 'struct': 'CpuDefinitionInfo',
-  'data': { 'name': 'str', '*migration-safe': 'bool', 'static': 'bool',
-            '*unavailable-features': [ 'str' ], 'typename': 'str' } }
-
 ##
 # @MemoryInfo:
 #
@@ -2137,16 +2089,6 @@
 ##
 { 'command': 'query-memory-size-summary', 'returns': 'MemoryInfo' }
 
-##
-# @query-cpu-definitions:
-#
-# Return a list of supported virtual CPU definitions
-#
-# Returns: a list of CpuDefInfo
-#
-# Since: 1.2.0
-##
-{ 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'] }
 
 ##
 # @CpuModelInfo:

qapi/target.json

@@ -425,3 +425,67 @@
             'model': 'CpuModelInfo' },
   'returns': 'CpuModelExpansionInfo',
   'if': 'defined(TARGET_S390X) || defined(TARGET_I386)' }
+
+##
+# @CpuDefinitionInfo:
+#
+# Virtual CPU definition.
+#
+# @name: the name of the CPU definition
+#
+# @migration-safe: whether a CPU definition can be safely used for
+#                  migration in combination with a QEMU compatibility machine
+#                  when migrating between different QEMU versions and between
+#                  hosts with different sets of (hardware or software)
+#                  capabilities. If not provided, information is not available
+#                  and callers should not assume the CPU definition to be
+#                  migration-safe. (since 2.8)
+#
+# @static: whether a CPU definition is static and will not change depending on
+#          QEMU version, machine type, machine options and accelerator options.
+#          A static model is always migration-safe. (since 2.8)
+#
+# @unavailable-features: List of properties that prevent
+#                        the CPU model from running in the current
+#                        host. (since 2.8)
+# @typename: Type name that can be used as argument to @device-list-properties,
+#            to introspect properties configurable using -cpu or -global.
+#            (since 2.9)
+#
+# @unavailable-features is a list of QOM property names that
+# represent CPU model attributes that prevent the CPU from running.
+# If the QOM property is read-only, that means there's no known
+# way to make the CPU model run in the current host. Implementations
+# that choose not to provide specific information return the
+# property name "type".
+# If the property is read-write, it means that it MAY be possible
+# to run the CPU model in the current host if that property is
+# changed. Management software can use it as hints to suggest or
+# choose an alternative for the user, or just to generate meaningful
+# error messages explaining why the CPU model can't be used.
+# If @unavailable-features is an empty list, the CPU model is
+# runnable using the current host and machine-type.
+# If @unavailable-features is not present, runnability
+# information for the CPU is not available.
+#
+# Since: 1.2.0
+##
+{ 'struct': 'CpuDefinitionInfo',
+  'data': { 'name': 'str',
+            '*migration-safe': 'bool',
+            'static': 'bool',
+            '*unavailable-features': [ 'str' ],
+            'typename': 'str' },
+  'if': 'defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_I386) || defined(TARGET_S390X)' }
+
+##
+# @query-cpu-definitions:
+#
+# Return a list of supported virtual CPU definitions
+#
+# Returns: a list of CpuDefInfo
+#
+# Since: 1.2.0
+##
+{ 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'],
+  'if': 'defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_I386) || defined(TARGET_S390X)' }

qmp.c

@@ -605,11 +605,6 @@ ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
     return prop_list;
 }
 
-CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
-{
-    return arch_query_cpu_definitions(errp);
-}
-
 void qmp_add_client(const char *protocol, const char *fdname,
                     bool has_skipauth, bool skipauth, bool has_tls, bool tls,
                     Error **errp)

stubs/Makefile.objs

@@ -1,4 +1,3 @@
-stub-obj-y += arch-query-cpu-def.o
 stub-obj-y += bdrv-next-monitor-owned.o
 stub-obj-y += blk-commit-all.o
 stub-obj-y += blockdev-close-all-bdrv-states.o

stubs/arch-query-cpu-def.c

@@ -1,11 +0,0 @@
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "sysemu/arch_init.h"
-#include "qapi/error.h"
-#include "qapi/qmp/qerror.h"
-
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
-{
-    error_setg(errp, QERR_UNSUPPORTED);
-    return NULL;
-}

target/arm/helper.c

@@ -19,6 +19,7 @@
 #include "sysemu/kvm.h"
 #include "fpu/softfloat.h"
 #include "qemu/range.h"
+#include "qapi/qapi-commands-target.h"
 
 #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */
 
@@ -6733,7 +6734,7 @@ static void arm_cpu_add_definition(gpointer data, gpointer user_data)
     *cpu_list = entry;
 }
 
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     CpuDefinitionInfoList *cpu_list = NULL;
     GSList *list;

target/i386/cpu.c

@@ -3791,7 +3791,7 @@ static void x86_cpu_definition_entry(gpointer data, gpointer user_data)
     *cpu_list = entry;
 }
 
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     CpuDefinitionInfoList *cpu_list = NULL;
     GSList *list = get_sorted_cpu_model_list();

target/ppc/translate_init.inc.c

@@ -38,6 +38,7 @@
 #include "qemu/cutils.h"
 #include "disas/capstone.h"
 #include "fpu/softfloat.h"
+#include "qapi/qapi-commands-target.h"
 
 //#define PPC_DUMP_CPU
 //#define PPC_DEBUG_SPR
@@ -10201,7 +10202,7 @@ static void ppc_cpu_defs_entry(gpointer data, gpointer user_data)
     *first = entry;
 }
 
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     CpuDefinitionInfoList *cpu_list = NULL;
     GSList *list;

target/s390x/cpu_models.c

@@ -433,7 +433,7 @@ static void create_cpu_model_list(ObjectClass *klass, void *opaque)
     *cpu_list = entry;
 }
 
-CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     struct CpuDefinitionInfoListData list_data = {
         .list = NULL,