Add CPUX86Family type in CPUX86State. This will be used to differentiate
generic x86 and x86 EPYC based cpu models.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 hw/i386/pc.c      |    4 ++++
 target/i386/cpu.c |    1 +
 target/i386/cpu.h |    7 +++++++
 3 files changed, 12 insertions(+)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 5dc11df922..7f30104a6b 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1398,6 +1398,8 @@ static void pc_new_cpu(PCMachineState *pcms, int64_t apic_id, Error **errp)
     env = &X86_CPU(cpu)->env;
     env->nr_dies = pcms->smp_dies;
     env->nr_nodes = ms->numa_state->num_nodes / ms->smp.sockets;
+    env->family_type = strncmp(ms->cpu_type, "EPYC", 4) ? CPUX86FAMILY_DEFAULT :
+                                                          CPUX86FAMILY_EPYC;
 
     object_property_set_uint(cpu, apic_id, "apic-id", &local_err);
     object_property_set_bool(cpu, true, "realized", &local_err);
@@ -2246,6 +2248,8 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
 
     env->nr_dies = pcms->smp_dies;
     env->nr_nodes = ms->numa_state->num_nodes / ms->smp.sockets;
+    env->family_type = strncmp(ms->cpu_type, "EPYC", 4) ? CPUX86FAMILY_DEFAULT :
+                                                          CPUX86FAMILY_EPYC;
 
     /*
      * If APIC ID is not set,
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 9b2608a4c8..5629c6d4c1 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5997,6 +5997,7 @@ static void x86_cpu_initfn(Object *obj)
 
     env->nr_dies = 1;
     env->nr_nodes = 1;
+    env->family_type = CPUX86FAMILY_DEFAULT;
     cpu_set_cpustate_pointers(cpu);
 
     object_property_add(obj, "family", "int",
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 0ef4fdb55f..105744430b 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -1284,6 +1284,11 @@ typedef enum TPRAccess {
     TPR_ACCESS_WRITE,
 } TPRAccess;
 
+typedef enum CPUX86Family {
+    CPUX86FAMILY_DEFAULT = 0,
+    CPUX86FAMILY_EPYC,
+} CPUX86Family;
+
 /* Cache information data structures: */
 
 enum CacheType {
@@ -1590,6 +1595,8 @@ typedef struct CPUX86State {
 
     TPRAccess tpr_access_type;
 
+    CPUX86Family family_type;
+
     unsigned nr_dies;
     unsigned nr_nodes;
 } CPUX86State;