1. Add descriptions for how to select avx512 datapath. 2. Add explanation for "P" in ice.ini. Fixes: 7f85d5ebcfe1 ("net/ice: add AVX512 vector path") Fixes: 271cc8c5028a ("doc: update ice features list") Cc: stable@dpdk.org Signed-off-by: Qi Zhang <qi.z.zhang@intel.com> --- v2: fix statement for force-max-simd-bitwidth which is an EAL argument but not devarg. doc/guides/nics/ice.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index a0887f129f..2a4439a63a 100644 --- a/doc/guides/nics/ice.rst +++ b/doc/guides/nics/ice.rst @@ -211,9 +211,12 @@ are chosen based on 2 conditions. - ``CPU`` On the X86 platform, the driver checks if the CPU supports AVX2. If it's supported, AVX2 paths will be chosen. If not, SSE is chosen. + If the CPU supports AVX512 and EAL argument ``force-max-simd-bitwidth`` + is set to 512, AVX512 paths will be chosen. - ``Offload features`` - The supported HW offload features are described in the document ice_vec.ini. + The supported HW offload features are described in the document ice.ini, + A value "P" means the offload feature is not supported by vector path. If any not supported features are used, ICE vector PMD is disabled and the normal paths are chosen. -- 2.26.2
1. Add descriptions for how to select avx512 datapath. 2. Add explanation for "P" in ice.ini. Fixes: 7f85d5ebcfe1 ("net/ice: add AVX512 vector path") Fixes: 271cc8c5028a ("doc: update ice features list") Cc: stable@dpdk.org Signed-off-by: Qi Zhang <qi.z.zhang@intel.com> --- v2: fix statement for force-max-simd-bitwidth which is an EAL argument but not devarg. doc/guides/nics/ice.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index a0887f129f..2a4439a63a 100644 --- a/doc/guides/nics/ice.rst +++ b/doc/guides/nics/ice.rst @@ -211,9 +211,12 @@ are chosen based on 2 conditions. - ``CPU`` On the X86 platform, the driver checks if the CPU supports AVX2. If it's supported, AVX2 paths will be chosen. If not, SSE is chosen. + If the CPU supports AVX512 and EAL argument ``force-max-simd-bitwidth`` + is set to 512, AVX512 paths will be chosen. - ``Offload features`` - The supported HW offload features are described in the document ice_vec.ini. + The supported HW offload features are described in the document ice.ini, + A value "P" means the offload feature is not supported by vector path. If any not supported features are used, ICE vector PMD is disabled and the normal paths are chosen. -- 2.26.2
> -----Original Message-----
> From: Zhang, Qi Z <qi.z.zhang@intel.com>
> Sent: Wednesday, December 16, 2020 8:22 AM
> To: Rong, Leyi <leyi.rong@intel.com>
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; dev@dpdk.org; Zhang, Qi Z
> <qi.z.zhang@intel.com>; stable@dpdk.org
> Subject: [PATCH v2] doc: fix some statements for ice vector PMD
>
> 1. Add descriptions for how to select avx512 datapath.
> 2. Add explanation for "P" in ice.ini.
>
> Fixes: 7f85d5ebcfe1 ("net/ice: add AVX512 vector path")
> Fixes: 271cc8c5028a ("doc: update ice features list")
> Cc: stable@dpdk.org
>
> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
> ---
>
> v2:
> fix statement for force-max-simd-bitwidth which is an EAL argument but not
> devarg.
>
> doc/guides/nics/ice.rst | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index
> a0887f129f..2a4439a63a 100644
> --- a/doc/guides/nics/ice.rst
> +++ b/doc/guides/nics/ice.rst
> @@ -211,9 +211,12 @@ are chosen based on 2 conditions.
> - ``CPU``
> On the X86 platform, the driver checks if the CPU supports AVX2.
> If it's supported, AVX2 paths will be chosen. If not, SSE is chosen.
> + If the CPU supports AVX512 and EAL argument
> + ``force-max-simd-bitwidth`` is set to 512, AVX512 paths will be chosen.
>
> - ``Offload features``
> - The supported HW offload features are described in the document ice_vec.ini.
> + The supported HW offload features are described in the document
> + ice.ini, A value "P" means the offload feature is not supported by vector path.
> If any not supported features are used, ICE vector PMD is disabled and the
> normal paths are chosen.
>
> --
> 2.26.2
Acked-by: Leyi Rong <leyi.rong@intel.com>
Best Regards,
Leyi Rong
> -----Original Message----- > From: Rong, Leyi <leyi.rong@intel.com> > Sent: Thursday, December 17, 2020 10:13 AM > To: Zhang, Qi Z <qi.z.zhang@intel.com> > Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; dev@dpdk.org; stable@dpdk.org > Subject: RE: [PATCH v2] doc: fix some statements for ice vector PMD > > > > -----Original Message----- > > From: Zhang, Qi Z <qi.z.zhang@intel.com> > > Sent: Wednesday, December 16, 2020 8:22 AM > > To: Rong, Leyi <leyi.rong@intel.com> > > Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; dev@dpdk.org; Zhang, Qi Z > > <qi.z.zhang@intel.com>; stable@dpdk.org > > Subject: [PATCH v2] doc: fix some statements for ice vector PMD > > > > 1. Add descriptions for how to select avx512 datapath. > > 2. Add explanation for "P" in ice.ini. > > > > Fixes: 7f85d5ebcfe1 ("net/ice: add AVX512 vector path") > > Fixes: 271cc8c5028a ("doc: update ice features list") > > Cc: stable@dpdk.org > > > > Signed-off-by: Qi Zhang <qi.z.zhang@intel.com> > > --- > > > > v2: > > fix statement for force-max-simd-bitwidth which is an EAL argument but > > not devarg. > > > > doc/guides/nics/ice.rst | 5 ++++- > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index > > a0887f129f..2a4439a63a 100644 > > --- a/doc/guides/nics/ice.rst > > +++ b/doc/guides/nics/ice.rst > > @@ -211,9 +211,12 @@ are chosen based on 2 conditions. > > - ``CPU`` > > On the X86 platform, the driver checks if the CPU supports AVX2. > > If it's supported, AVX2 paths will be chosen. If not, SSE is chosen. > > + If the CPU supports AVX512 and EAL argument > > + ``force-max-simd-bitwidth`` is set to 512, AVX512 paths will be chosen. > > > > - ``Offload features`` > > - The supported HW offload features are described in the document > ice_vec.ini. > > + The supported HW offload features are described in the document > > + ice.ini, A value "P" means the offload feature is not supported by vector > path. > > If any not supported features are used, ICE vector PMD is disabled and > the > > normal paths are chosen. > > > > -- > > 2.26.2 > > Acked-by: Leyi Rong <leyi.rong@intel.com> Applied to dpdk-next-net-intel. Thanks Qi > > Best Regards, > Leyi Rong