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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)