This is a workaround to prevent a crash, which might be caused by optimization of newer gcc (7.3.0) on Intel Skylake.
This disables AVX512F support of gcc by adding -mno-avx512f if it is disabled in DPDK (CONFIG_RTE_ENABLE_AVX512=n). This does not apply to the meson build as that doesn't have such an option but always enable AVX512F whenever supported. Bugzilla ID: 97 Cc: sta...@dpdk.org Signed-off-by: Yongseok Koh <ys...@mellanox.com> --- v3: * use AUTO_CPUFLAGS instead of redundant check for gcc * remove the change from meson build v2: * disable the flag only in case of gcc mk/rte.cpuflags.mk | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index 43ed84155b..c3291b17a1 100644 --- a/mk/rte.cpuflags.mk +++ b/mk/rte.cpuflags.mk @@ -68,6 +68,11 @@ endif ifneq ($(filter $(AUTO_CPUFLAGS),__AVX512F__),) ifeq ($(CONFIG_RTE_ENABLE_AVX512),y) CPUFLAGS += AVX512F +else +# disable AVX512F support of gcc as a workaround for Bug 97 +ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) +MACHINE_CFLAGS += -mno-avx512f +endif endif endif -- 2.11.0
