[Qemu-devel] [RFC 2 PATCH 15/16] i386: Fix pkg_id offset for epyc mode

[Moger, Babu]

Signed-off-by: Babu Moger <babu.mo...@amd.com>
---
 target/i386/cpu.c |   24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index f25491a029..f8b1fc5c07 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4094,9 +4094,10 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, 
uint32_t count,
                    uint32_t *eax, uint32_t *ebx,
                    uint32_t *ecx, uint32_t *edx)
 {
+    MachineState *ms = MACHINE(qdev_get_machine());
     X86CPU *cpu = env_archcpu(env);
     CPUState *cs = env_cpu(env);
-    uint32_t die_offset;
+    uint32_t die_offset, pkg_offset;
     uint32_t limit;
     uint32_t signature[3];
 
@@ -4119,6 +4120,21 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, 
uint32_t count,
         index = env->cpuid_level;
     }
 
+    if (ms->epyc) {
+        X86CPUTopoInfo topo_info = {
+            .numa_nodes = nb_numa_nodes,
+            .nr_sockets = ms->smp.sockets,
+            .nr_cores = ms->smp.cores,
+            .nr_threads = ms->smp.threads,
+        };
+        unsigned nodes = nodes_in_pkg(&topo_info);
+        pkg_offset = apicid_pkg_offset_epyc(nodes, MAX_CCX, MAX_CORES_IN_CCX,
+                                            cs->nr_threads);
+    } else {
+        pkg_offset = apicid_pkg_offset(env->nr_dies, cs->nr_cores,
+                                       cs->nr_threads);
+    }
+
     switch(index) {
     case 0:
         *eax = env->cpuid_level;
@@ -4275,8 +4291,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, 
uint32_t count,
             *ecx |= CPUID_TOPOLOGY_LEVEL_SMT;
             break;
         case 1:
-            *eax = apicid_pkg_offset(env->nr_dies,
-                                     cs->nr_cores, cs->nr_threads);
+            *eax = pkg_offset;
             *ebx = cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
             break;
@@ -4310,8 +4325,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, 
uint32_t count,
             *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
             break;
         case 2:
-            *eax = apicid_pkg_offset(env->nr_dies, cs->nr_cores,
-                                                   cs->nr_threads);
+            *eax = pkg_offset;
             *ebx = env->nr_dies * cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_DIE;
             break;