From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id BE4DB1B4FC for ; Fri, 23 Nov 2018 11:29:05 +0100 (CET) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2E9AB88304; Fri, 23 Nov 2018 10:29:05 +0000 (UTC) Received: from ktraynor.remote.csb (unknown [10.36.118.7]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1AFDC1866A; Fri, 23 Nov 2018 10:29:03 +0000 (UTC) From: Kevin Traynor To: Yongseok Koh Cc: dpdk stable Date: Fri, 23 Nov 2018 10:26:19 +0000 Message-Id: <20181123102713.17309-15-ktraynor@redhat.com> In-Reply-To: <20181123102713.17309-1-ktraynor@redhat.com> References: <20181123102713.17309-1-ktraynor@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 23 Nov 2018 10:29:05 +0000 (UTC) Subject: [dpdk-stable] patch 'mk: disable gcc AVX512F support' has been queued to stable release 18.08.1 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Nov 2018 10:29:06 -0000 Hi, FYI, your patch has been queued to stable release 18.08.1 Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet. It will be pushed if I get no objections before 11/29/18. So please shout if anyone has objections. Also note that after the patch there's a diff of the upstream commit vs the patch applied to the branch. If the code is different (ie: not only metadata diffs), due for example to a change in context or macro names, please double check it. Thanks. Kevin Traynor --- >>From 7eb9c15c03b76ad9649356e1c52e21caf921f1aa Mon Sep 17 00:00:00 2001 From: Yongseok Koh Date: Sat, 3 Nov 2018 01:06:32 +0000 Subject: [PATCH] mk: disable gcc AVX512F support [ upstream commit 8d07c82b239f7782be0d3afbb626390e2cb0c8f5 ] 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 Signed-off-by: Yongseok Koh --- mk/rte.cpuflags.mk | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index 43ed84155..c3291b17a 100644 --- a/mk/rte.cpuflags.mk +++ b/mk/rte.cpuflags.mk @@ -69,4 +69,9 @@ 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 -- 2.19.0 --- Diff of the applied patch vs upstream commit (please double-check if non-empty: --- --- - 2018-11-23 10:22:54.633556224 +0000 +++ 0015-mk-disable-gcc-AVX512F-support.patch 2018-11-23 10:22:54.000000000 +0000 @@ -1,8 +1,10 @@ -From 8d07c82b239f7782be0d3afbb626390e2cb0c8f5 Mon Sep 17 00:00:00 2001 +From 7eb9c15c03b76ad9649356e1c52e21caf921f1aa Mon Sep 17 00:00:00 2001 From: Yongseok Koh Date: Sat, 3 Nov 2018 01:06:32 +0000 Subject: [PATCH] mk: disable gcc AVX512F support +[ upstream commit 8d07c82b239f7782be0d3afbb626390e2cb0c8f5 ] + This is a workaround to prevent a crash, which might be caused by optimization of newer gcc (7.3.0) on Intel Skylake. @@ -13,7 +15,6 @@ but always enable AVX512F whenever supported. Bugzilla ID: 97 -Cc: stable@dpdk.org Signed-off-by: Yongseok Koh ---