[dpdk-dev] [PATCH v3 15/18] member: add checks for max SIMD bitwidth

Ciara Power ciara.power at intel.com
Wed Sep 30 15:04:11 CEST 2020


When choosing a vector path to take, an extra condition must be
satisfied to ensure the max SIMD bitwidth allows for the CPU
enabled path.

Cc: Yipeng Wang <yipeng1.wang at intel.com>
Cc: Sameh Gobriel <sameh.gobriel at intel.com>

Signed-off-by: Ciara Power <ciara.power at intel.com>
---
 lib/librte_member/rte_member_ht.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/librte_member/rte_member_ht.c b/lib/librte_member/rte_member_ht.c
index cbcd0d4407..71e3cf7b52 100644
--- a/lib/librte_member/rte_member_ht.c
+++ b/lib/librte_member/rte_member_ht.c
@@ -113,7 +113,8 @@ rte_member_create_ht(struct rte_member_setsum *ss,
 	}
 #if defined(RTE_ARCH_X86)
 	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) &&
-			RTE_MEMBER_BUCKET_ENTRIES == 16)
+			RTE_MEMBER_BUCKET_ENTRIES == 16 &&
+			rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD)
 		ss->sig_cmp_fn = RTE_MEMBER_COMPARE_AVX2;
 	else
 #endif
-- 
2.17.1



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