eal/x86: add CPU flag for WAITPKG

Add a new CPUID flag indicating processor support for UMONITOR/UMWAIT
and TPAUSE instructions instruction.

Signed-off-by: Liang Ma <liang.j.ma@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/lib/librte_eal/x86/include/rte_cpuflags.h b/lib/librte_eal/x86/include/rte_cpuflags.h
index c1d2036..92e90fb 100644 (file)
--- a/lib/librte_eal/x86/include/rte_cpuflags.h
+++ b/lib/librte_eal/x86/include/rte_cpuflags.h
@@ -132,6 +132,8 @@ enum rte_cpu_flag_t {
        RTE_CPUFLAG_MOVDIR64B,              /**< Direct Store Instructions 64B */
        RTE_CPUFLAG_AVX512VP2INTERSECT,     /**< AVX512 Two Register Intersection */
 
+       RTE_CPUFLAG_WAITPKG,                /**< UMONITOR/UMWAIT/TPAUSE */
+
        /* The last item */
        RTE_CPUFLAG_NUMFLAGS,               /**< This should always be the last! */
 };

diff --git a/lib/librte_eal/x86/rte_cpuflags.c b/lib/librte_eal/x86/rte_cpuflags.c
index 30439e7..0325c4b 100644 (file)
--- a/lib/librte_eal/x86/rte_cpuflags.c
+++ b/lib/librte_eal/x86/rte_cpuflags.c
@@ -110,6 +110,8 @@ const struct feature_entry rte_cpu_feature_table[] = {
        FEAT_DEF(AVX512F, 0x00000007, 0, RTE_REG_EBX, 16)
        FEAT_DEF(RDSEED, 0x00000007, 0, RTE_REG_EBX, 18)
 
+       FEAT_DEF(WAITPKG, 0x00000007, 0, RTE_REG_ECX, 5)
+
        FEAT_DEF(LAHF_SAHF, 0x80000001, 0, RTE_REG_ECX,  0)
        FEAT_DEF(LZCNT, 0x80000001, 0, RTE_REG_ECX,  4)