[PATCH v5 1/3] eal: add x86 cpuid support for monitorx

[Sivaprasad Tummala <sivaprasad.tummala@amd.com>]

Add a new CPUID flag to indicate support for monitorx instruction
on AMD EPYC processors.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
Depends-on: series-29173 ("test/cpuflags: removed test for NUMFLAGS")
---
 lib/eal/x86/include/rte_cpuflags.h | 2 +-
 lib/eal/x86/rte_cpuflags.c         | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/eal/x86/include/rte_cpuflags.h b/lib/eal/x86/include/rte_cpuflags.h
index 7fc6117243..402281f2b1 100644
--- a/lib/eal/x86/include/rte_cpuflags.h
+++ b/lib/eal/x86/include/rte_cpuflags.h
@@ -133,7 +133,7 @@ enum rte_cpu_flag_t {
 	RTE_CPUFLAG_AVX512VP2INTERSECT,     /**< AVX512 Two Register Intersection */
 
 	RTE_CPUFLAG_WAITPKG,                /**< UMONITOR/UMWAIT/TPAUSE */
-
+	RTE_CPUFLAG_MONITORX,               /**< MONITORX */
 	/* The last item */
 };
 
diff --git a/lib/eal/x86/rte_cpuflags.c b/lib/eal/x86/rte_cpuflags.c
index 22061cb6d3..063dc7a624 100644
--- a/lib/eal/x86/rte_cpuflags.c
+++ b/lib/eal/x86/rte_cpuflags.c
@@ -133,6 +133,7 @@ const struct feature_entry rte_cpu_feature_table[] = {
 
 	FEAT_DEF(LAHF_SAHF, 0x80000001, 0, RTE_REG_ECX,  0)
 	FEAT_DEF(LZCNT, 0x80000001, 0, RTE_REG_ECX,  4)
+	FEAT_DEF(MONITORX, 0x80000001, 0, RTE_REG_ECX,  29)
 
 	FEAT_DEF(SYSCALL, 0x80000001, 0, RTE_REG_EDX, 11)
 	FEAT_DEF(XD, 0x80000001, 0, RTE_REG_EDX, 20)
@@ -194,5 +195,7 @@ rte_cpu_get_intrinsics_support(struct rte_cpu_intrinsics *intrinsics)
 		intrinsics->power_pause = 1;
 		if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_RTM))
 			intrinsics->power_monitor_multi = 1;
+	} else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_MONITORX)) {
+		intrinsics->power_monitor = 1;
 	}
 }
-- 
2.34.1