Re: [PULL 3/4] i386: Add new CPU model Cooperlake

[Xiaoyao Li <xiaoyao.li@intel.com>]

On 12/17/2019 3:38 AM, Eduardo Habkost wrote:
> From: Cathy Zhang <cathy.zhang@intel.com>
> 
> Cooper Lake is intel's successor to Cascade Lake, the new
> CPU model inherits features from Cascadelake-Server, while
> add one platform associated new feature: AVX512_BF16. Meanwhile,
> add STIBP for speculative execution.
> 
> Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
> Reviewed-by: Tao Xu <tao3.xu@intel.com>
> Message-Id: <1571729728-23284-4-git-send-email-cathy.zhang@intel.com>
> Reviewed-by: Bruce Rogers <brogers@suse.com>
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>   target/i386/cpu.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 60 insertions(+)
> 
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index 69f518a21a..de828e29d8 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -3159,6 +3159,66 @@ static X86CPUDefinition builtin_x86_defs[] = {
>               { /* end of list */ }
>           }
>       },
> +    {
> +        .name = "Cooperlake",
> +        .level = 0xd,
> +        .vendor = CPUID_VENDOR_INTEL,
> +        .family = 6,
> +        .model = 85,
> +        .stepping = 10,
> +        .features[FEAT_1_EDX] =
> +            CPUID_VME | 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_PCID | 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_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
> +            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
> +            CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
> +            CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLWB |
> +            CPUID_7_0_EBX_AVX512F | CPUID_7_0_EBX_AVX512DQ |
> +            CPUID_7_0_EBX_AVX512BW | CPUID_7_0_EBX_AVX512CD |
> +            CPUID_7_0_EBX_AVX512VL | CPUID_7_0_EBX_CLFLUSHOPT,
> +        .features[FEAT_7_0_ECX] =
> +            CPUID_7_0_ECX_PKU |
> +            CPUID_7_0_ECX_AVX512VNNI,
> +        .features[FEAT_7_0_EDX] =
> +            CPUID_7_0_EDX_SPEC_CTRL | CPUID_7_0_EDX_STIBP |
> +            CPUID_7_0_EDX_SPEC_CTRL_SSBD | CPUID_7_0_EDX_ARCH_CAPABILITIES,
> +        .features[FEAT_ARCH_CAPABILITIES] =
> +            MSR_ARCH_CAP_RDCL_NO | MSR_ARCH_CAP_IBRS_ALL |
> +            MSR_ARCH_CAP_SKIP_L1DFL_VMENTRY | MSR_ARCH_CAP_MDS_NO,
> +        .features[FEAT_7_1_EAX] =
> +            CPUID_7_1_EAX_AVX512_BF16,
> +        /*
> +         * Missing: XSAVES (not supported by some Linux versions,
> +         * including v4.1 to v4.12).
> +         * KVM doesn't yet expose any XSAVES state save component,
> +         * and the only one defined in Skylake (processor tracing)
> +         * probably will block migration anyway.
> +         */
> +        .features[FEAT_XSAVE] =
> +            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
> +            CPUID_XSAVE_XGETBV1,
> +        .features[FEAT_6_EAX] =
> +            CPUID_6_EAX_ARAT,
> +        .xlevel = 0x80000008,
> +        .model_id = "Intel Xeon Processor (Cooperlake)",
> +    },
>       {
>           .name = "Icelake-Client",
>           .level = 0xd,
> 

Hi Eduardo,

Since this CPU model has been hold for a while, it misses the VMX 
features added by Paolo recently.

Besides, there are two bits PSCHANGE_MC_NO(bit 6) and TAA_NO(bit 8) of 
MSR_IA32_ARCH_CAPABILITIES disclosed recently, that are also missed in 
this CPU model.

Should we hold off this and update a new patch with the above features 
added?
Or we make this merged and send a new patch to add a new version for the 
above?