From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42982) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEz6S-0002mg-LE for qemu-devel@nongnu.org; Wed, 15 Nov 2017 09:55:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eEz6R-0001as-VA for qemu-devel@nongnu.org; Wed, 15 Nov 2017 09:55:48 -0500 Received: from mail-oi0-x243.google.com ([2607:f8b0:4003:c06::243]:49526) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eEz6R-0001Z9-Qf for qemu-devel@nongnu.org; Wed, 15 Nov 2017 09:55:47 -0500 Received: by mail-oi0-x243.google.com with SMTP id r190so7142759oie.6 for ; Wed, 15 Nov 2017 06:55:46 -0800 (PST) MIME-Version: 1.0 From: "Longpeng(Mike)" Date: Wed, 15 Nov 2017 22:55:45 +0800 Message-ID: Content-Type: text/plain; charset="UTF-8" Subject: [Qemu-devel] [Question] why need to start all queues in vhost_net_start List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: jasowang@redhat.com, "Longpeng(Mike)" , arei.gonglei@huawei.com, king.wang@huawei.com, weidong.huang@huawei.com, stefanha@redhat.com, mst@redhat.com Hi guys, We got a BUG report from our testers yesterday, the testing scenario was migrating a VM (Windows guest, *4 vcpus*, 4GB, vhost-user net: *7 queues*). We found the cause reason, and we'll report the BUG or send a fix patch to upstream if necessary( we haven't test the upstream yet, sorry... ). We want to know why the vhost_net_start() must start *total queues* ( in our VM there're 7 queues ) but not *the queues that current used* ( in our VM, guest only uses the first 4 queues because it's limited by the number of vcpus) ? Looking forward to your help, thx :) -- Regards, Longpeng