From e97c563f7146098119839aa146a6f25070eb7148 Mon Sep 17 00:00:00 2001
From: Gavin Shan <gshan@redhat.com>
Date: Wed, 11 May 2022 18:01:02 +0800
Subject: [PATCH 01/16] qapi/machine.json: Add cluster-id

RH-Author: Gavin Shan <gshan@redhat.com>
RH-MergeRequest: 86: hw/arm/virt: Fix the default CPU topology
RH-Commit: [1/6] 44d7d83008c6d28485ae44f7cced792f4987b919 (gwshan/qemu-rhel-9)
RH-Bugzilla: 2041823
RH-Acked-by: Eric Auger <eric.auger@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Andrew Jones <drjones@redhat.com>

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2041823

This adds cluster-id in CPU instance properties, which will be used
by arm/virt machine. Besides, the cluster-id is also verified or
dumped in various spots:

  * hw/core/machine.c::machine_set_cpu_numa_node() to associate
    CPU with its NUMA node.

  * hw/core/machine.c::machine_numa_finish_cpu_init() to record
    CPU slots with no NUMA mapping set.

  * hw/core/machine-hmp-cmds.c::hmp_hotpluggable_cpus() to dump
    cluster-id.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20220503140304.855514-2-gshan@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 1dcf7001d4bae651129d46d5628b29e93a411d0b)
Signed-off-by: Gavin Shan <gshan@redhat.com>
---
 hw/core/machine-hmp-cmds.c |  4 ++++
 hw/core/machine.c          | 16 ++++++++++++++++
 qapi/machine.json          |  6 ++++--
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c
index 4e2f319aeb..5cb5eecbfc 100644
--- a/hw/core/machine-hmp-cmds.c
+++ b/hw/core/machine-hmp-cmds.c
@@ -77,6 +77,10 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
         if (c->has_die_id) {
             monitor_printf(mon, "    die-id: \"%" PRIu64 "\"\n", c->die_id);
         }
+        if (c->has_cluster_id) {
+            monitor_printf(mon, "    cluster-id: \"%" PRIu64 "\"\n",
+                           c->cluster_id);
+        }
         if (c->has_core_id) {
             monitor_printf(mon, "    core-id: \"%" PRIu64 "\"\n", c->core_id);
         }
diff --git a/hw/core/machine.c b/hw/core/machine.c
index dffc3ef4ab..168f4de910 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -890,6 +890,11 @@ void machine_set_cpu_numa_node(MachineState *machine,
             return;
         }
 
+        if (props->has_cluster_id && !slot->props.has_cluster_id) {
+            error_setg(errp, "cluster-id is not supported");
+            return;
+        }
+
         if (props->has_socket_id && !slot->props.has_socket_id) {
             error_setg(errp, "socket-id is not supported");
             return;
@@ -909,6 +914,11 @@ void machine_set_cpu_numa_node(MachineState *machine,
                 continue;
         }
 
+        if (props->has_cluster_id &&
+            props->cluster_id != slot->props.cluster_id) {
+                continue;
+        }
+
         if (props->has_die_id && props->die_id != slot->props.die_id) {
                 continue;
         }
@@ -1203,6 +1213,12 @@ static char *cpu_slot_to_string(const CPUArchId *cpu)
         }
         g_string_append_printf(s, "die-id: %"PRId64, cpu->props.die_id);
     }
+    if (cpu->props.has_cluster_id) {
+        if (s->len) {
+            g_string_append_printf(s, ", ");
+        }
+        g_string_append_printf(s, "cluster-id: %"PRId64, cpu->props.cluster_id);
+    }
     if (cpu->props.has_core_id) {
         if (s->len) {
             g_string_append_printf(s, ", ");
diff --git a/qapi/machine.json b/qapi/machine.json
index d25a481ce4..4c417e32a5 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -868,10 +868,11 @@
 # @node-id: NUMA node ID the CPU belongs to
 # @socket-id: socket number within node/board the CPU belongs to
 # @die-id: die number within socket the CPU belongs to (since 4.1)
-# @core-id: core number within die the CPU belongs to
+# @cluster-id: cluster number within die the CPU belongs to (since 7.1)
+# @core-id: core number within cluster the CPU belongs to
 # @thread-id: thread number within core the CPU belongs to
 #
-# Note: currently there are 5 properties that could be present
+# Note: currently there are 6 properties that could be present
 #       but management should be prepared to pass through other
 #       properties with device_add command to allow for future
 #       interface extension. This also requires the filed names to be kept in
@@ -883,6 +884,7 @@
   'data': { '*node-id': 'int',
             '*socket-id': 'int',
             '*die-id': 'int',
+            '*cluster-id': 'int',
             '*core-id': 'int',
             '*thread-id': 'int'
   }
-- 
2.31.1