From: Qi Zhang <qi.z.zhang@intel.com>
To: ferruh.yigit@intel.com, qiming.yang@intel.com
Cc: dev@dpdk.org, leyi.rong@intel.com, wenzhuo.lu@intel.com,
Qi Zhang <qi.z.zhang@intel.com>,
stable@dpdk.org
Subject: [dpdk-stable] [PATCH] doc: fix some statements for ice vector PMD
Date: Tue, 8 Dec 2020 09:57:48 +0800 [thread overview]
Message-ID: <20201208015748.969395-1-qi.z.zhang@intel.com> (raw)
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>
---
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..5ab6795578 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 devargs "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
reply other threads:[~2020-12-08 1:54 UTC|newest]
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