i386: Support modules_per_die in X86CPUTopoInfo

Support module level in i386 cpu topology structure "X86CPUTopoInfo".

Since x86 does not yet support the "modules" parameter in "-smp",
X86CPUTopoInfo.modules_per_die is currently always 1.

Therefore, the module level width in APIC ID, which can be calculated by
"apicid_bitwidth_for_count(topo_info->modules_per_die)", is always 0 for
now, so we can directly add APIC ID related helpers to support module
level parsing.

In addition, update topology structure in test-x86-topo.c.

Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Co-developed-by: Zhuocheng Ding <zhuocheng.ding@intel.com>
Signed-off-by: Zhuocheng Ding <zhuocheng.ding@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Message-ID: <20240424154929.1487382-14-zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 18 insertions, 4 deletions

diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h
index befeb92..7622d80 100644
--- a/include/hw/i386/topology.h
+++ b/include/hw/i386/topology.h
@@ -56,7 +56,8 @@ typedef struct X86CPUTopoIDs {
 
 typedef struct X86CPUTopoInfo {
     unsigned dies_per_pkg;
-    unsigned cores_per_die;
+    unsigned modules_per_die;
+    unsigned cores_per_module;
     unsigned threads_per_core;
 } X86CPUTopoInfo;
 
@@ -92,7 +93,13 @@ static inline unsigned apicid_smt_width(X86CPUTopoInfo *topo_info)
 /* Bit width of the Core_ID field */
 static inline unsigned apicid_core_width(X86CPUTopoInfo *topo_info)
 {
-    return apicid_bitwidth_for_count(topo_info->cores_per_die);
+    return apicid_bitwidth_for_count(topo_info->cores_per_module);
+}
+
+/* Bit width of the Module_ID field */
+static inline unsigned apicid_module_width(X86CPUTopoInfo *topo_info)
+{
+    return apicid_bitwidth_for_count(topo_info->modules_per_die);
 }
 
 /* Bit width of the Die_ID field */
@@ -107,10 +114,16 @@ static inline unsigned apicid_core_offset(X86CPUTopoInfo *topo_info)
     return apicid_smt_width(topo_info);
 }
 
+/* Bit offset of the Module_ID field */
+static inline unsigned apicid_module_offset(X86CPUTopoInfo *topo_info)
+{
+    return apicid_core_offset(topo_info) + apicid_core_width(topo_info);
+}
+
 /* Bit offset of the Die_ID field */
 static inline unsigned apicid_die_offset(X86CPUTopoInfo *topo_info)
 {
-    return apicid_core_offset(topo_info) + apicid_core_width(topo_info);
+    return apicid_module_offset(topo_info) + apicid_module_width(topo_info);
 }
 
 /* Bit offset of the Pkg_ID (socket ID) field */
@@ -142,7 +155,8 @@ static inline void x86_topo_ids_from_idx(X86CPUTopoInfo *topo_info,
                                          X86CPUTopoIDs *topo_ids)
 {
     unsigned nr_dies = topo_info->dies_per_pkg;
-    unsigned nr_cores = topo_info->cores_per_die;
+    unsigned nr_cores = topo_info->cores_per_module *
+                        topo_info->modules_per_die;
     unsigned nr_threads = topo_info->threads_per_core;
 
     topo_ids->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);