From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ilya Maximets Subject: Re: [PATCH v3 10/19] vhost: add config flag for postcopy feature Date: Fri, 5 Oct 2018 14:55:48 +0300 Message-ID: <20181005115328eucas1p14030af5c9206a46c3ef38a320ad5c666~atD_ifGMn2922629226eucas1p1Q@eucas1p1.samsung.com> References: <20181004081403.8039-1-maxime.coquelin@redhat.com> <20181004081403.8039-11-maxime.coquelin@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: dgilbert@redhat.com, stable@dpdk.org To: Maxime Coquelin , dev@dpdk.org, tiwei.bie@intel.com, zhihong.wang@intel.com, jfreimann@redhat.com, nicknickolaev@gmail.com, bruce.richardson@intel.com, alejandro.lucero@netronome.com Return-path: Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) by dpdk.org (Postfix) with ESMTP id C0AA623D for ; Fri, 5 Oct 2018 13:53:30 +0200 (CEST) Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20181005115329euoutp02250ca455199e1c0ac185c60e6603784a~atD-8EpOw2043820438euoutp02J for ; Fri, 5 Oct 2018 11:53:29 +0000 (GMT) In-Reply-To: <20181004081403.8039-11-maxime.coquelin@redhat.com> Content-Language: en-GB List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 04.10.2018 11:13, Maxime Coquelin wrote: > 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