target/i386: Print CPUID subleaf info for unsupported feature

Some CPUID leaves have meaningful subleaf index. Print the subleaf info
in feature_word_description for CPUID features.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20241217123932.948789-3-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 6258027ab15481e0c1ba235ffd46d64b53bd2210..be3812973f6adfa7217f4d6fd8f070a715d1000d 100644 (file)
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5780,11 +5780,15 @@ static char *feature_word_description(FeatureWordInfo *f)
         {
             const char *reg = get_register_name_32(f->cpuid.reg);
             assert(reg);
-            return g_strdup_printf("CPUID.%02XH:%s",
-                                   f->cpuid.eax, reg);
+            if (!f->cpuid.needs_ecx) {
+                return g_strdup_printf("CPUID[eax=%02Xh].%s", f->cpuid.eax, reg);
+            } else {
+                return g_strdup_printf("CPUID[eax=%02Xh,ecx=%02Xh].%s",
+                                       f->cpuid.eax, f->cpuid.ecx, reg);
+            }
         }
     case MSR_FEATURE_WORD:
-        return g_strdup_printf("MSR(%02XH)",
+        return g_strdup_printf("MSR(%02Xh)",
                                f->msr.index);
     }