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-rw-r--r--target/i386/cpu.c7
-rw-r--r--target/i386/cpu.h7
2 files changed, 11 insertions, 3 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 34e2cead87..26ec6e9da7 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -662,7 +662,8 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
           /* CPUID_7_0_ECX_OSPKE is dynamic */ \
           CPUID_7_0_ECX_LA57 | CPUID_7_0_ECX_PKS | CPUID_7_0_ECX_VAES)
 #define TCG_7_0_EDX_FEATURES CPUID_7_0_EDX_FSRM
-#define TCG_7_1_EAX_FEATURES 0
+#define TCG_7_1_EAX_FEATURES (CPUID_7_1_EAX_FZRM | CPUID_7_1_EAX_FSRS | \
+          CPUID_7_1_EAX_FSRC)
 #define TCG_APM_FEATURES 0
 #define TCG_6_EAX_FEATURES CPUID_6_EAX_ARAT
 #define TCG_XSAVE_FEATURES (CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XGETBV1)
@@ -872,8 +873,8 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
         .feat_names = {
             NULL, NULL, NULL, NULL,
             "avx-vnni", "avx512-bf16", NULL, NULL,
-            NULL, NULL, NULL, NULL,
-            NULL, NULL, NULL, NULL,
+            NULL, NULL, "fzrm", "fsrs",
+            "fsrc", NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index d4bc19577a..e0703feb5e 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -900,6 +900,13 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w,
 #define CPUID_7_1_EAX_AVX_VNNI          (1U << 4)
 /* AVX512 BFloat16 Instruction */
 #define CPUID_7_1_EAX_AVX512_BF16       (1U << 5)
+/* Fast Zero REP MOVS */
+#define CPUID_7_1_EAX_FZRM              (1U << 10)
+/* Fast Short REP STOS */
+#define CPUID_7_1_EAX_FSRS              (1U << 11)
+/* Fast Short REP CMPS/SCAS */
+#define CPUID_7_1_EAX_FSRC              (1U << 12)
+
 /* XFD Extend Feature Disabled */
 #define CPUID_D_1_EAX_XFD               (1U << 4)