1 files changed, 16 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index c3eba567ea..50cd257a7e 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1614,6 +1614,10 @@ typedef struct X86CPUDefinition {
     FeatureWordArray features;
     const char *model_id;
     CPUCaches *cache_info;
+
+    /* Use AMD EPYC encoding for apic id */
+    bool use_epyc_apic_id_encoding;
+
     /*
      * Definitions for alternative versions of CPU model.
      * List is terminated by item with version == 0.
@@ -1655,6 +1659,18 @@ static const X86CPUVersionDefinition *x86_cpu_def_get_versions(X86CPUDefinition
     return def->versions ?: default_version_list;
 }
 
+bool cpu_x86_use_epyc_apic_id_encoding(const char *cpu_type)
+{
+    X86CPUClass *xcc = X86_CPU_CLASS(object_class_by_name(cpu_type));
+
+    assert(xcc);
+    if (xcc->model && xcc->model->cpudef) {
+        return xcc->model->cpudef->use_epyc_apic_id_encoding;
+    } else {
+        return false;
+    }
+}
+
 static CPUCaches epyc_cache_info = {
     .l1d_cache = &(CPUCacheInfo) {
         .type = DATA_CACHE,