From: Harry van Haaren <harry.van.haa...@intel.com>
This commit enables OVS to at runtime check for more detailed
AVX512 capabilities, specifically Byte and Word (BW) extensions,
and Vector Bit Manipulation Instructions (VBMI).
These instructions will be used in the CPU ISA optimized
implementations of traffic profile aware miniflow extract.
Signed-off-by: Harry van Haaren <harry.van.haa...@intel.com>
Acked-by: Eelco Chaudron <echau...@redhat.com>
Acked-by: Flavio Leitner <f...@sysclose.org>
---
NEWS | 1 +
lib/dpdk.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/NEWS b/NEWS
index 608c5a32f..502b41e3c 100644
--- a/NEWS
+++ b/NEWS
@@ -30,6 +30,7 @@ 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 567fd28d4..bcdd575e9 100644
--- a/lib/dpdk.c
+++ b/lib/dpdk.c
@@ -665,6 +665,8 @@ 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
--
2.32.0
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