[v26,13/21] qapi/s390x/cpu topology: add query-s390x-cpu-polarization command

Commit Message

Nina Schoetterl-Glausch Oct. 16, 2023, 6:39 p.m. UTC

From: Pierre Morel <[e-mail]>

The query-s390x-cpu-polarization qmp command returns the current
CPU polarization of the machine.

Signed-off-by: Pierre Morel <[e-mail]>
Reviewed-by: Thomas Huth <[e-mail]>
Reviewed-by: Nina Schoetterl-Glausch <[e-mail]>
Co-developed-by: Nina Schoetterl-Glausch <[e-mail]>
Acked-by: Markus Armbruster <[e-mail]>
Signed-off-by: Nina Schoetterl-Glausch <[e-mail]>
---
 qapi/machine-target.json | 30 ++++++++++++++++++++++++++++++
 hw/s390x/cpu-topology.c  |  8 ++++++++
 2 files changed, 38 insertions(+)

Patch

diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index ac93a5f82c..4e55adbe00 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -452,3 +452,33 @@ 
   'features': [ 'unstable' ],
   'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
 }
+
+##
+# @CpuPolarizationInfo:
+#
+# The result of a CPU polarization query.
+#
+# @polarization: the CPU polarization
+#
+# Since: 8.2
+##
+{ 'struct': 'CpuPolarizationInfo',
+  'data': { 'polarization': 'CpuS390Polarization' },
+  'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
+}
+
+##
+# @query-s390x-cpu-polarization:
+#
+# Features:
+#
+# @unstable: This command is experimental.
+#
+# Returns: the machine's CPU polarization
+#
+# Since: 8.2
+##
+{ 'command': 'query-s390x-cpu-polarization', 'returns': 'CpuPolarizationInfo',
+  'features': [ 'unstable' ],
+  'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
+}
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 327bccea4f..f16bdf65fa 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -459,3 +459,11 @@  void qmp_set_cpu_topology(uint16_t core,
                          has_drawer, drawer, has_entitlement, entitlement,
                          has_dedicated, dedicated, errp);
 }
+
+CpuPolarizationInfo *qmp_query_s390x_cpu_polarization(Error **errp)
+{
+    CpuPolarizationInfo *info = g_new0(CpuPolarizationInfo, 1);
+
+    info->polarization = s390_topology.polarization;
+    return info;
+}