From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Coquelin Subject: [PATCH 06/12] vhost: register new regions with userfaultfd Date: Wed, 26 Sep 2018 09:26:59 +0200 Message-ID: <20180926072705.22641-7-maxime.coquelin@redhat.com> References: <20180926072705.22641-1-maxime.coquelin@redhat.com> Cc: dgilbert@redhat.com, Maxime Coquelin To: dev@dpdk.org, tiwei.bie@intel.com, zhihong.wang@intel.com, jfreimann@redhat.com Return-path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id B3ABA1B108 for ; Wed, 26 Sep 2018 09:27:36 +0200 (CEST) In-Reply-To: <20180926072705.22641-1-maxime.coquelin@redhat.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Maxime Coquelin --- lib/librte_vhost/vhost_user.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index d9ef5bca8..cbbfbdf00 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -928,6 +928,28 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *pmsg) mmap_size, alignment, mmap_offset); + + if (dev->postcopy_listening) { + struct uffdio_register reg_struct; + + reg_struct.range.start = (uint64_t)(uintptr_t)mmap_addr; + reg_struct.range.len = mmap_size; + reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING; + + if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER, + ®_struct)) { + RTE_LOG(ERR, VHOST_CONFIG, + "Failed to register ufd for region %d: (ufd = %d) %s\n", + i, dev->postcopy_ufd, + strerror(errno)); + continue; + } + RTE_LOG(INFO, VHOST_CONFIG, + "\t userfaultfd registered for range : %llx - %llx\n", + reg_struct.range.start, + reg_struct.range.start + + reg_struct.range.len - 1); + } } for (i = 0; i < dev->nr_vring; i++) { -- 2.17.1