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From: Liang Ma <liang.j.ma@intel.com>
To: dev@dpdk.org
Cc: anatoly.burakov@intel.com, viktorin@rehivetech.com, qi.z.zhang@intel.com,
ruifeng.wang@arm.com, beilei.xing@intel.com, jia.guo@intel.com,
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drc@linux.vnet.ibm.com, Liang Ma <liang.j.ma@intel.com>
Date: Sat, 24 Oct 2020 00:06:23 +0100
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Subject: [dpdk-dev] [PATCH v9 01/10] eal: add new x86 cpuid support for
WAITPKG
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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>
---
lib/librte_eal/x86/include/rte_cpuflags.h | 1 +
lib/librte_eal/x86/rte_cpuflags.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/lib/librte_eal/x86/include/rte_cpuflags.h b/lib/librte_eal/x86/include/rte_cpuflags.h
index c1d20364d1..848ba9cbfb 100644
--- a/lib/librte_eal/x86/include/rte_cpuflags.h
+++ b/lib/librte_eal/x86/include/rte_cpuflags.h
@@ -132,6 +132,7 @@ 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 30439e7951..0325c4b93b 100644
--- 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)
--
2.17.1