[dpdk-dev] [PATCH v4 6/8] eal/x86: identify AVX512 extensions flag

[Marvin Liu]

Read CPUID to check if AVX512 extensions are supported.

Signed-off-by: Marvin Liu <yong.liu at 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