Re: [Xen-devel] [PATCH] x86/cpuid: Enable new SSE/AVX/AVX512 cpu features

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Oct 27, 2017 at 10:18:04PM +0800, Yang Zhong wrote:
> Intel IceLake cpu has added new cpu features: AVX512VBMI2/GFNI/
> VAES/AVX512VNNI/AVX512BITALG/VPCLMULQDQ. Those new cpu features
> need expose to guest.wq

s/wq//

> 
> The bit definition:
> CPUID.(EAX=7,ECX=0):ECX[bit 06] AVX512VBMI2
> CPUID.(EAX=7,ECX=0):ECX[bit 08] GFNI
> CPUID.(EAX=7,ECX=0):ECX[bit 09] VAES
> CPUID.(EAX=7,ECX=0):ECX[bit 10] VPCLMULQDQ
> CPUID.(EAX=7,ECX=0):ECX[bit 11] AVX512VNNI
> CPUID.(EAX=7,ECX=0):ECX[bit 12] AVX512_BITALG
> 
> The release document ref below link:
> https://software.intel.com/sites/default/files/managed/c5/15/\
> architecture-instruction-set-extensions-programming-reference.pdf

Ah! Thank you!
> 
> Signed-off-by: Yang Zhong <yang.zhong@xxxxxxxxx>
> ---
>  docs/man/xl.cfg.pod.5.in                    |  3 ++-
>  tools/libxl/libxl_cpuid.c                   |  6 ++++++
>  tools/misc/xen-cpuid.c                      | 13 +++++++------
>  xen/include/public/arch-x86/cpufeatureset.h |  6 ++++++
>  xen/tools/gen-cpuid.py                      |  3 ++-
>  5 files changed, 23 insertions(+), 8 deletions(-)
> 
> diff --git a/docs/man/xl.cfg.pod.5.in b/docs/man/xl.cfg.pod.5.in
> index b7b91d8..d056768 100644
> --- a/docs/man/xl.cfg.pod.5.in
> +++ b/docs/man/xl.cfg.pod.5.in
> @@ -1731,7 +1731,8 @@ perfctr_core perfctr_nb pge pku popcnt pse pse36 psn 
> rdrand rdseed rdtscp rtm
>  sha skinit smap smep smx ss sse sse2 sse3 sse4.1 sse4.2 sse4_1 sse4_2 sse4a
>  ssse3 svm svm_decode svm_lbrv svm_npt svm_nrips svm_pausefilt svm_tscrate
>  svm_vmcbclean syscall sysenter tbm tm tm2 topoext tsc tsc-deadline tsc_adjust
> -umip vme vmx wdt x2apic xop xsave xtpr
> +umip vme vmx wdt x2apic xop xsave xtpr avx512_vbmi2 gfni vaes vpclmulqdq
> +avx512_vnni avx512_bitalg
>  
>  
>  The xend syntax is a list of values in the form of
> diff --git a/tools/libxl/libxl_cpuid.c b/tools/libxl/libxl_cpuid.c
> index e692b61..614991f 100644
> --- a/tools/libxl/libxl_cpuid.c
> +++ b/tools/libxl/libxl_cpuid.c
> @@ -199,6 +199,12 @@ int libxl_cpuid_parse_config(libxl_cpuid_policy_list 
> *cpuid, const char* str)
>          {"umip",         0x00000007,  0, CPUID_REG_ECX,  2,  1},
>          {"pku",          0x00000007,  0, CPUID_REG_ECX,  3,  1},
>          {"ospke",        0x00000007,  0, CPUID_REG_ECX,  4,  1},
> +        {"avx512_vbmi2", 0x00000007,  0, CPUID_REG_ECX,  6,  1},
> +        {"gfni",         0x00000007,  0, CPUID_REG_ECX,  8,  1},
> +        {"vaes",         0x00000007,  0, CPUID_REG_ECX,  9,  1},
> +        {"vpclmulqdq",   0x00000007,  0, CPUID_REG_ECX, 10,  1},
> +        {"avx512_vnni",  0x00000007,  0, CPUID_REG_ECX, 11,  1},
> +        {"avx512_bitalg",0x00000007,  0, CPUID_REG_ECX, 12,  1},
>  
>          {"avx512-4vnniw",0x00000007,  0, CPUID_REG_EDX,  2,  1},
>          {"avx512-4fmaps",0x00000007,  0, CPUID_REG_EDX,  3,  1},
> diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c
> index 106be0f..985deea 100644
> --- a/tools/misc/xen-cpuid.c
> +++ b/tools/misc/xen-cpuid.c
> @@ -120,12 +120,13 @@ static const char *str_Da1[32] =
>  
>  static const char *str_7c0[32] =
>  {
> -    [ 0] = "prechwt1", [ 1] = "avx512vbmi",
> -    [ 2] = "REZ",      [ 3] = "pku",
> -    [ 4] = "ospke",
> -
> -    [5 ... 13] = "REZ",
> -
> +    [ 0] = "prechwt1",     [ 1] = "avx512vbmi",
> +    [ 2] = "REZ",          [ 3] = "pku",
> +    [ 4] = "ospke",        [ 5] = "REZ",
> +    [ 6] = "avx512_vbmi2", [ 7] = "REZ",
> +    [ 8] = "gfni",         [ 9] = "vaes",
> +    [10] = "vpclmulqdq",   [11] = "avx512_vnni",
> +    [12] = "avx512_bitalg",[13] = "REZ",
>      [14] = "avx512_vpopcntdq",
>  
>      [15 ... 31] = "REZ",
> diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
> b/xen/include/public/arch-x86/cpufeatureset.h
> index 0ee3ea3..bb24b79 100644
> --- a/xen/include/public/arch-x86/cpufeatureset.h
> +++ b/xen/include/public/arch-x86/cpufeatureset.h
> @@ -228,6 +228,12 @@ XEN_CPUFEATURE(AVX512VBMI,    6*32+ 1) /*A  AVX-512 
> Vector Byte Manipulation Ins
>  XEN_CPUFEATURE(UMIP,          6*32+ 2) /*S  User Mode Instruction Prevention 
> */
>  XEN_CPUFEATURE(PKU,           6*32+ 3) /*H  Protection Keys for Userspace */
>  XEN_CPUFEATURE(OSPKE,         6*32+ 4) /*!  OS Protection Keys Enable */
> +XEN_CPUFEATURE(AVX512_VBMI2,  6*32+ 6) /*A  addition AVX-512 VBMI 
> Instructions */
> +XEN_CPUFEATURE(GFNI,          6*32+ 8) /*A  Galois Field New Instructions */
> +XEN_CPUFEATURE(VAES,          6*32+ 9) /*A  Vector AES instructions */
> +XEN_CPUFEATURE(VPCLMULQDQ,    6*32+ 10) /*A  vector PCLMULQDQ instructions */
> +XEN_CPUFEATURE(AVX512_VNNI,   6*32+ 11) /*A  Vector Neural Network 
> Instructions */
> +XEN_CPUFEATURE(AVX512_BITALG, 6*32+ 12) /*A  support for VPOPCNT[B,W] and 
> VPSHUFBITQMB*/
>  XEN_CPUFEATURE(AVX512_VPOPCNTDQ, 6*32+14) /*A  POPCNT for vectors of DW/QW */
>  XEN_CPUFEATURE(RDPID,         6*32+22) /*A  RDPID instruction */
>  
> diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
> index 9ec4486..be8df48 100755
> --- a/xen/tools/gen-cpuid.py
> +++ b/xen/tools/gen-cpuid.py
> @@ -255,7 +255,8 @@ def crunch_numbers(state):
>          # top of AVX512F
>          AVX512F: [AVX512DQ, AVX512IFMA, AVX512PF, AVX512ER, AVX512CD,
>                    AVX512BW, AVX512VL, AVX512VBMI, AVX512_4VNNIW,
> -                  AVX512_4FMAPS, AVX512_VPOPCNTDQ],
> +                  AVX512_4FMAPS, AVX512_VPOPCNTDQ, AVX512_VBMI2,
> +                  AVX512_VNNI, AVX512_BITALG],
>      }
>  
>      deep_features = tuple(sorted(deps.keys()))
> -- 
> 1.9.1
> 
> 
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> https://lists.xen.org/xen-devel

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