Fast short REP MOVS can be added to TCG, since a trivial translation
of string operation is a good option for short lengths.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 target/i386/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 4d2b8d0444df..34e2cead870e 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -661,7 +661,7 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
 #define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU | \
           /* 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 0
+#define TCG_7_0_EDX_FEATURES CPUID_7_0_EDX_FSRM
 #define TCG_7_1_EAX_FEATURES 0
 #define TCG_APM_FEATURES 0
 #define TCG_6_EAX_FEATURES CPUID_6_EAX_ARAT
-- 
2.39.1

On 2/27/23 00:13, Paolo Bonzini wrote:
> Fast short REP MOVS can be added to TCG, since a trivial translation
> of string operation is a good option for short lengths.
> 
> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
> ---
>   target/i386/cpu.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~