numa: forbid '-numa node, mem' for 5.1 and newer machine types

Deprecation period is run out and it's a time to flip the switch
introduced by cd5ff8333a.  Disable legacy option for new machine
types (since 5.1) and amend documentation.

'-numa node,memdev' shall be used instead of disabled option
with new machine types.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20200609135635.761587-1-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

6 files changed, 11 insertions, 3 deletions

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 402c362c14..5aa8b87465 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -2320,7 +2320,6 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     hc->plug = virt_machine_device_plug_cb;
     hc->unplug_request = virt_machine_device_unplug_request_cb;
     hc->unplug = virt_machine_device_unplug_cb;
-    mc->numa_mem_supported = true;
     mc->nvdimm_supported = true;
     mc->auto_enable_numa_with_memhp = true;
     mc->default_ram_id = "mach-virt.ram";
@@ -2434,6 +2433,7 @@ static void virt_machine_5_0_options(MachineClass *mc)
 {
     virt_machine_5_1_options(mc);
     compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len);
+    mc->numa_mem_supported = true;
 }
 DEFINE_VIRT_MACHINE(5, 0)
 
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 5f81900f88..2725886d06 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -117,6 +117,13 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
     }
 
     if (node->has_mem) {
+        if (!mc->numa_mem_supported) {
+            error_setg(errp, "Parameter -numa node,mem is not supported by this"
+                      " machine type");
+            error_append_hint(errp, "Use -numa node,memdev instead\n");
+            return;
+        }
+
         numa_info[nodenr].node_mem = node->mem;
         if (!qtest_enabled()) {
             warn_report("Parameter -numa node,mem is deprecated,"
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 803bd52ca4..4af9679d03 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1980,7 +1980,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     hc->unplug = pc_machine_device_unplug_cb;
     mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
     mc->nvdimm_supported = true;
-    mc->numa_mem_supported = true;
     mc->default_ram_id = "pc.ram";
 
     object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 1497d0e4ae..1d832b2878 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -441,6 +441,7 @@ static void pc_i440fx_5_0_machine_options(MachineClass *m)
     pc_i440fx_5_1_machine_options(m);
     m->alias = NULL;
     m->is_default = false;
+    m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
 }
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 46cd06524c..047ea8db28 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -369,6 +369,7 @@ static void pc_q35_5_0_machine_options(MachineClass *m)
 {
     pc_q35_5_1_machine_options(m);
     m->alias = NULL;
+    m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
 }
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index bd9345cdac..4c185bcc13 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4510,7 +4510,6 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
      * in which LMBs are represented and hot-added
      */
     mc->numa_mem_align_shift = 28;
-    mc->numa_mem_supported = true;
     mc->auto_enable_numa = true;
 
     smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF;
@@ -4598,6 +4597,7 @@ static void spapr_machine_5_0_class_options(MachineClass *mc)
 {
     spapr_machine_5_1_class_options(mc);
     compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len);
+    mc->numa_mem_supported = true;
 }
 
 DEFINE_SPAPR_MACHINE(5_0, "5.0", false);