Re: [Qemu-devel] [PATCH v2] i386: add KnightsMill cpu model

[Boqun Feng]

Ping ;-)

Regards,
Boqun

On Tue, Mar 20, 2018 at 08:08:15AM +0800, Boqun Feng wrote:
> A new cpu model called "KnightsMill" is added to model Knights Mill
> processors.  Compared to "Skylake-Server" cpu model, the following
> features are added:
> 
>       avx512_4vnniw avx512_4fmaps avx512pf avx512er avx512_vpopcntdq
> 
> and the following features are removed:
> 
>       pcid invpcid clflushopt avx512dq avx512bw clwb smap rtm mpx
>       xsavec xgetbv1 hle
> 
> Signed-off-by: Boqun Feng <address@hidden>
> ---
> v1 --> v2:
> 
> *     Change the model name to "KnightsMill" as per Daniel's
>       suggestion.
> 
>  target/i386/cpu.c | 42 ++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index 2c04645ceac9..c484afdb7023 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -1795,6 +1795,48 @@ static X86CPUDefinition builtin_x86_defs[] = {
>          .xlevel = 0x80000008,
>          .model_id = "Intel Xeon Processor (Skylake, IBRS)",
>      },
> +    {
> +        .name = "KnightsMill",
> +        .level = 0xd,
> +        .vendor = CPUID_VENDOR_INTEL,
> +        .family = 6,
> +        .model = 133,
> +        .stepping = 0,
> +        .features[FEAT_1_EDX] =
> +            CPUID_VME | CPUID_SS | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR |
> +            CPUID_MMX | CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV 
> |
> +            CPUID_MCA | CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC |
> +            CPUID_CX8 | CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC |
> +            CPUID_PSE | CPUID_DE | CPUID_FP87,
> +        .features[FEAT_1_ECX] =
> +            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
> +            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
> +            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
> +            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
> +            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
> +            CPUID_EXT_F16C | CPUID_EXT_RDRAND,
> +        .features[FEAT_8000_0001_EDX] =
> +            CPUID_EXT2_LM | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP |
> +            CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
> +        .features[FEAT_8000_0001_ECX] =
> +            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
> +        .features[FEAT_7_0_EBX] =
> +            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 
> |
> +            CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS |
> +            CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX | CPUID_7_0_EBX_AVX512F 
> |
> +            CPUID_7_0_EBX_AVX512CD | CPUID_7_0_EBX_AVX512PF |
> +            CPUID_7_0_EBX_AVX512ER,
> +        .features[FEAT_7_0_ECX] =
> +            CPUID_7_0_ECX_AVX512_VPOPCNTDQ,
> +        .features[FEAT_7_0_EDX] =
> +            CPUID_7_0_EDX_AVX512_4VNNIW | CPUID_7_0_EDX_AVX512_4FMAPS,
> +        .features[FEAT_XSAVE] =
> +            CPUID_XSAVE_XSAVEOPT,
> +        .features[FEAT_6_EAX] =
> +            CPUID_6_EAX_ARAT,
> +        .xlevel = 0x80000008,
> +        .model_id = "Intel Xeon Phi Processor (Knights Mill)",
> +    },
>      {
>          .name = "Opteron_G1",
>          .level = 5,
> -- 
> 2.16.1
>