diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index bc6956561a..50008431c3 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -963,7 +963,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             "avx512bitalg", NULL, "avx512-vpopcntdq", NULL,
             "la57", NULL, NULL, NULL,
             NULL, NULL, "rdpid", NULL,
-            NULL, "cldemote", NULL, "movdiri",
+            "bus-lock-detect", "cldemote", NULL, "movdiri",
             "movdir64b", NULL, NULL, "pks",
         },
         .cpuid = {
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 8be39cfb62..b4b136cd0d 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -769,6 +769,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
 #define CPUID_7_0_ECX_LA57              (1U << 16)
 /* Read Processor ID */
 #define CPUID_7_0_ECX_RDPID             (1U << 22)
+/* Bus Lock Debug Exception */
+#define CPUID_7_0_ECX_BUS_LOCK_DETECT   (1U << 24)
 /* Cache Line Demote Instruction */
 #define CPUID_7_0_ECX_CLDEMOTE          (1U << 25)
 /* Move Doubleword as Direct Store Instruction */