Add a new CPUID flag to indicate support for monitorx instruction
on AMD Epyc processors.
Signed-off-by: Sivaprasad Tummala <sivaprasad.tumm...@amd.com>
---
lib/eal/include/generic/rte_cpuflags.h | 2 ++
lib/eal/x86/include/rte_cpuflags.h | 1 +
lib/eal/x86/rte_cpuflags.c | 3 +++
3 files changed, 6 insertions(+)
diff --git a/lib/eal/include/generic/rte_cpuflags.h
b/lib/eal/include/generic/rte_cpuflags.h
index d35551e931..db653a8dd7 100644
--- a/lib/eal/include/generic/rte_cpuflags.h
+++ b/lib/eal/include/generic/rte_cpuflags.h
@@ -26,6 +26,8 @@ struct rte_cpu_intrinsics {
/**< indicates support for rte_power_pause function */
uint32_t power_monitor_multi : 1;
/**< indicates support for rte_power_monitor_multi function */
+ uint32_t amd_power_monitorx : 1;
+ /**< indicates amd support for rte_power_monitor function */
};
/**
diff --git a/lib/eal/x86/include/rte_cpuflags.h
b/lib/eal/x86/include/rte_cpuflags.h
index 92e90fb6e0..d3e608533a 100644
--- a/lib/eal/x86/include/rte_cpuflags.h
+++ b/lib/eal/x86/include/rte_cpuflags.h
@@ -133,6 +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 */
RTE_CPUFLAG_NUMFLAGS, /**< This should always be the
last! */
diff --git a/lib/eal/x86/rte_cpuflags.c b/lib/eal/x86/rte_cpuflags.c
index d6b518251b..ae2e0a8470 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)
@@ -191,5 +192,7 @@ 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->amd_power_monitorx = 1;
}
}
--
2.34.1
