From patchwork Thu Oct 11 09:24:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 46553 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 583B91B1EF; Thu, 11 Oct 2018 11:25:50 +0200 (CEST) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id 5C8601B1E8; Thu, 11 Oct 2018 11:25:48 +0200 (CEST) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A260330B96C9; Thu, 11 Oct 2018 09:25:47 +0000 (UTC) Received: from localhost.localdomain (ovpn-112-55.ams2.redhat.com [10.36.112.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id A22CF18A44; Thu, 11 Oct 2018 09:25:44 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, tiwei.bie@intel.com, zhihong.wang@intel.com, jfreimann@redhat.com, nicknickolaev@gmail.com, i.maximets@samsung.com, bruce.richardson@intel.com, alejandro.lucero@netronome.com Cc: dgilbert@redhat.com, stable@dpdk.org, Maxime Coquelin Date: Thu, 11 Oct 2018 11:24:23 +0200 Message-Id: <20181011092432.22275-11-maxime.coquelin@redhat.com> In-Reply-To: <20181011092432.22275-1-maxime.coquelin@redhat.com> References: <20181011092432.22275-1-maxime.coquelin@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Thu, 11 Oct 2018 09:25:47 +0000 (UTC) Subject: [dpdk-dev] [PATCH v6 10/19] vhost: add config flag for postcopy feature X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Postcopy live-migration features relies on userfaultfd, which was only introduced in kernel v4.3. This patch introduces a new define to allow building vhost library on kernels not supporting userfaultfd. With legacy build system, user has to explicitly set CONFIG_RTE_LIBRTE_VHOST_POSTCOPY to 'y'. With Meson build system, RTE_LIBRTE_VHOST_POSTCOPY gets automatically defined if userfaultfd kernel header is present. Suggested-by: Ilya Maximets Signed-off-by: Maxime Coquelin Acked-by: Ilya Maximets --- config/common_linuxapp | 1 + lib/librte_vhost/meson.build | 2 ++ 2 files changed, 3 insertions(+) diff --git a/config/common_linuxapp b/config/common_linuxapp index 485e1467d..424100a75 100644 --- a/config/common_linuxapp +++ b/config/common_linuxapp @@ -14,6 +14,7 @@ CONFIG_RTE_LIBRTE_KNI=y CONFIG_RTE_LIBRTE_PMD_KNI=y CONFIG_RTE_LIBRTE_VHOST=y CONFIG_RTE_LIBRTE_VHOST_NUMA=y +CONFIG_RTE_LIBRTE_VHOST_POSTCOPY=n CONFIG_RTE_LIBRTE_PMD_VHOST=y CONFIG_RTE_LIBRTE_IFC_PMD=y CONFIG_RTE_LIBRTE_PMD_AF_PACKET=y diff --git a/lib/librte_vhost/meson.build b/lib/librte_vhost/meson.build index 9d25b4d88..e33e6fc16 100644 --- a/lib/librte_vhost/meson.build +++ b/lib/librte_vhost/meson.build @@ -7,6 +7,8 @@ endif if has_libnuma == 1 dpdk_conf.set10('RTE_LIBRTE_VHOST_NUMA', true) endif +dpdk_conf.set('RTE_LIBRTE_VHOST_POSTCOPY', + cc.has_header('linux/userfaultfd.h')) version = 4 allow_experimental_apis = true cflags += '-fno-strict-aliasing'