diff --git a/NEWS b/NEWS
index 7bf09f8f1..2c8f5db66 100644
--- a/NEWS
+++ b/NEWS
@@ -43,6 +43,7 @@ Post-v2.15.0
        traffic.
      * Add build time configure command to enable auto-validatior as default
        miniflow implementation at build time.
+     * Cache results for CPU ISA checks, reduces overhead on repeated lookups.
    - ovs-ctl:
      * New option '--no-record-hostname' to disable hostname configuration
        in ovsdb on startup.
diff --git a/lib/dpdk.c b/lib/dpdk.c
index 9de2af58e..1b8f8e55b 100644
--- a/lib/dpdk.c
+++ b/lib/dpdk.c
@@ -706,6 +706,8 @@ dpdk_get_cpu_has_isa(const char *arch, const char *feature)
 #if __x86_64__
     /* CPU flags only defined for the architecture that support it. */
     CHECK_CPU_FEATURE(feature, "avx512f", RTE_CPUFLAG_AVX512F);
+    CHECK_CPU_FEATURE(feature, "avx512bw", RTE_CPUFLAG_AVX512BW);
+    CHECK_CPU_FEATURE(feature, "avx512vbmi", RTE_CPUFLAG_AVX512VBMI);
     CHECK_CPU_FEATURE(feature, "avx512vpopcntdq", RTE_CPUFLAG_AVX512VPOPCNTDQ);
     CHECK_CPU_FEATURE(feature, "bmi2", RTE_CPUFLAG_BMI2);
 #endif