From: Fenghua Yu <fenghua...@intel.com> A few new AVX-512 instruction groups/features are added in cpufeatures.h for enuermation: AVX512DQ, AVX512BW, and AVX512VL.
Clear the flags in fpu__xstate_clear_all_cpu_caps(). The specification for latest AVX-512 including the features can be found at https://software.intel.com/sites/default/files/managed/07/b7/319433-023.pdf Signed-off-by: Fenghua Yu <fenghua...@intel.com> --- I don't enable the flags in kvm. Hopefully kvm guys can pick up the flags and enable them in kvm. v3: Clear the flags in fpu__xstate_clear_all_cpu_caps(). v2: Change cpufeature.h to cpufeatures.h to use right file name in latest kernel. arch/x86/include/asm/cpufeatures.h | 3 +++ arch/x86/kernel/fpu/xstate.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 1a2811f..9ba2ca9 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -220,6 +220,7 @@ #define X86_FEATURE_CQM ( 9*32+12) /* Cache QoS Monitoring */ #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ +#define X86_FEATURE_AVX512DQ ( 9*32+17) /* AVX-512 DQ Instructions */ #define X86_FEATURE_RDSEED ( 9*32+18) /* The RDSEED instruction */ #define X86_FEATURE_ADX ( 9*32+19) /* The ADCX and ADOX instructions */ #define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */ @@ -230,6 +231,8 @@ #define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */ #define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */ #define X86_FEATURE_SHA_NI ( 9*32+29) /* SHA1/SHA256 Instruction Extensions */ +#define X86_FEATURE_AVX512BW ( 9*32+30) /* AVX-512 BW Instructions */ +#define X86_FEATURE_AVX512VL ( 9*32+31) /* AVX-512 Vector Lengths */ /* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */ #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */ diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 1b19818..b48ef35 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -59,6 +59,9 @@ void fpu__xstate_clear_all_cpu_caps(void) setup_clear_cpu_cap(X86_FEATURE_AVX512PF); setup_clear_cpu_cap(X86_FEATURE_AVX512ER); setup_clear_cpu_cap(X86_FEATURE_AVX512CD); + setup_clear_cpu_cap(X86_FEATURE_AVX512DQ); + setup_clear_cpu_cap(X86_FEATURE_AVX512BW); + setup_clear_cpu_cap(X86_FEATURE_AVX512VL); setup_clear_cpu_cap(X86_FEATURE_MPX); setup_clear_cpu_cap(X86_FEATURE_XGETBV1); setup_clear_cpu_cap(X86_FEATURE_PKU); -- 2.5.0
