From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82A15C76186 for ; Tue, 23 Jul 2019 17:10:35 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 59CE02184E for ; Tue, 23 Jul 2019 17:10:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 59CE02184E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=windriver.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46108 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpyJ7-000495-5w for qemu-devel@archiver.kernel.org; Tue, 23 Jul 2019 13:10:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46318) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpyIf-0002hD-J5 for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:10:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hpyIQ-0002bv-4w for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:10:00 -0400 Received: from mail5.windriver.com ([192.103.53.11]:32884 helo=mail5.wrs.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hpyIP-0002Xl-Pa for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:09:49 -0400 Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail5.wrs.com (8.15.2/8.15.2) with ESMTPS id x6NGIEkU025087 (version=TLSv1 cipher=AES128-SHA bits=128 verify=FAIL) for ; Tue, 23 Jul 2019 09:18:24 -0700 Received: from [172.25.39.5] (172.25.39.5) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server (TLS) id 14.3.468.0; Tue, 23 Jul 2019 09:18:03 -0700 To: From: Chris Friesen Message-ID: Date: Tue, 23 Jul 2019 10:18:01 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [172.25.39.5] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 192.103.53.11 Subject: [Qemu-devel] high-level view of packet processing for virtio NIC? X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, I'm looking for information on what the qemu architecture looks like for processing virtio network packets in a two-vCPU guest. It looks like there's an IO thread doing a decent fraction of the work, separate from the vCPU threads--is that correct? There's no disk involved in this case, purely network packet processing. Chris