| Message ID | 1466178433-8512-1-git-send-email-pbonzini@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jun 17, 2016 at 05:47:13PM +0200, Paolo Bonzini wrote: > ERMS just says "rep movsb" and "rep stosb" are fast. It does not > imply any new instruction, so we can support it easily. > > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Applied to x86-next. Thanks. > --- > target-i386/cpu.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/target-i386/cpu.c b/target-i386/cpu.c > index 3665fec..3871eb8 100644 > --- a/target-i386/cpu.c > +++ b/target-i386/cpu.c > @@ -358,10 +358,11 @@ static const char *cpuid_6_feature_name[] = { > #define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \ > CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \ > CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT | \ > - CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE) > + CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE | \ > + CPUID_7_0_EBX_ERMS) > /* missing: > CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2, > - CPUID_7_0_EBX_ERMS, CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, > + CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, > CPUID_7_0_EBX_RDSEED */ > #define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_PKU | CPUID_7_0_ECX_OSPKE) > #define TCG_APM_FEATURES 0 > -- > 2.5.5 >
diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 3665fec..3871eb8 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -358,10 +358,11 @@ static const char *cpuid_6_feature_name[] = { #define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \ CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \ CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT | \ - CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE) + CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE | \ + CPUID_7_0_EBX_ERMS) /* missing: CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2, - CPUID_7_0_EBX_ERMS, CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, + CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, CPUID_7_0_EBX_RDSEED */ #define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_PKU | CPUID_7_0_ECX_OSPKE) #define TCG_APM_FEATURES 0
ERMS just says "rep movsb" and "rep stosb" are fast. It does not imply any new instruction, so we can support it easily. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- target-i386/cpu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)