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From: Marvin Liu <yong.liu@intel.com>
To: maxime.coquelin@redhat.com, xiaolong.ye@intel.com, zhihong.wang@intel.com
Cc: harry.van.haaren@intel.com, dev@dpdk.org, Marvin Liu <yong.liu@intel.com>
Date: Thu, 16 Apr 2020 00:47:31 +0800
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<20200415164733.75416-1-yong.liu@intel.com>
Subject: [dpdk-dev] [PATCH v4 6/8] eal/x86: identify AVX512 extensions flag
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Read CPUID to check if AVX512 extensions are supported.
Signed-off-by: Marvin Liu <yong.liu@intel.com>
diff --git a/lib/librte_eal/common/arch/x86/rte_cpuflags.c b/lib/librte_eal/common/arch/x86/rte_cpuflags.c
index 6492df556..54e9f6185 100644
--- a/lib/librte_eal/common/arch/x86/rte_cpuflags.c
+++ b/lib/librte_eal/common/arch/x86/rte_cpuflags.c
@@ -109,6 +109,9 @@ const struct feature_entry rte_cpu_feature_table[] = {
FEAT_DEF(RTM, 0x00000007, 0, RTE_REG_EBX, 11)
FEAT_DEF(AVX512F, 0x00000007, 0, RTE_REG_EBX, 16)
FEAT_DEF(RDSEED, 0x00000007, 0, RTE_REG_EBX, 18)
+ FEAT_DEF(AVX512CD, 0x00000007, 0, RTE_REG_EBX, 28)
+ FEAT_DEF(AVX512BW, 0x00000007, 0, RTE_REG_EBX, 30)
+ FEAT_DEF(AVX512VL, 0x00000007, 0, RTE_REG_EBX, 31)
FEAT_DEF(LAHF_SAHF, 0x80000001, 0, RTE_REG_ECX, 0)
FEAT_DEF(LZCNT, 0x80000001, 0, RTE_REG_ECX, 4)
diff --git a/lib/librte_eal/common/include/arch/x86/rte_cpuflags.h b/lib/librte_eal/common/include/arch/x86/rte_cpuflags.h
index 25ba47b96..5bf99e05f 100644
--- a/lib/librte_eal/common/include/arch/x86/rte_cpuflags.h
+++ b/lib/librte_eal/common/include/arch/x86/rte_cpuflags.h
@@ -98,6 +98,9 @@ enum rte_cpu_flag_t {
RTE_CPUFLAG_RTM, /**< Transactional memory */
RTE_CPUFLAG_AVX512F, /**< AVX512F */
RTE_CPUFLAG_RDSEED, /**< RDSEED instruction */
+ RTE_CPUFLAG_AVX512CD, /**< AVX512CD */
+ RTE_CPUFLAG_AVX512BW, /**< AVX512BW */
+ RTE_CPUFLAG_AVX512VL, /**< AVX512VL */
/* (EAX 80000001h) ECX features */
RTE_CPUFLAG_LAHF_SAHF, /**< LAHF_SAHF */
--
2.17.1