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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B06F9C433FE for ; Fri, 20 May 2022 17:23:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352162AbiETRXo (ORCPT ); Fri, 20 May 2022 13:23:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352160AbiETRXj (ORCPT ); Fri, 20 May 2022 13:23:39 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A604018706D for ; Fri, 20 May 2022 10:23:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653067417; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=+mUQhLcxz6TZwVt0puoA8uLFKO7ahYDhUTcQY+6+1vw=; b=IiiDZ1c+PYx9tlAd32lbmsUqEzepZR/dJjsV0ymioZFUAokXdy/CvWg61mThhfUp25fOl8 IcIOvMO4O6Lg+DJzpcEi3byNB8YkEzoLIk4FQB9NaMxpB6oqKV8Fy06o+RS9fIhzMtE6tK x4HuGDBqdDPnRpjRGu/GUv4CQhO7RxA= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-400-66oEZV14PGix7OSjvRA3fQ-1; Fri, 20 May 2022 13:23:33 -0400 X-MC-Unique: 66oEZV14PGix7OSjvRA3fQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B40E138041D6; Fri, 20 May 2022 17:23:32 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.124]) by smtp.corp.redhat.com (Postfix) with ESMTP id 189E1492C14; Fri, 20 May 2022 17:23:27 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: virtualization@lists.linux-foundation.org, Jason Wang , kvm@vger.kernel.org, "Michael S. Tsirkin" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Stefano Garzarella , Longpeng , Zhu Lingshan , martinh@xilinx.com, hanand@xilinx.com, Si-Wei Liu , dinang@xilinx.com, Eli Cohen , lvivier@redhat.com, pabloc@xilinx.com, gautam.dawar@amd.com, Xie Yongji , habetsm.xilinx@gmail.com, Christophe JAILLET , tanuj.kamde@amd.com, eperezma@redhat.com, Wu Zongyong , martinpo@xilinx.com, lulu@redhat.com, ecree.xilinx@gmail.com, Parav Pandit , Dan Carpenter , Zhang Min Subject: [PATCH 0/4] Implement vdpasim stop operation Date: Fri, 20 May 2022 19:23:21 +0200 Message-Id: <20220520172325.980884-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement stop operation for vdpa_sim devices, so vhost-vdpa will offer=0D that backend feature and userspace can effectively stop the device.=0D =0D This is a must before get virtqueue indexes (base) for live migration,=0D since the device could modify them after userland gets them. There are=0D individual ways to perform that action for some devices=0D (VHOST_NET_SET_BACKEND, VHOST_VSOCK_SET_RUNNING, ...) but there was no=0D way to perform it for any vhost device (and, in particular, vhost-vdpa).=0D =0D Comments are welcome.=0D =0D Eugenio P=C3=A9rez (4):=0D vdpa: Add stop operation=0D vhost-vdpa: introduce STOP backend feature bit=0D vhost-vdpa: uAPI to stop the device=0D vdpa_sim: Implement stop vdpa op=0D =0D drivers/vdpa/vdpa_sim/vdpa_sim.c | 21 +++++++++++++++++++=0D drivers/vdpa/vdpa_sim/vdpa_sim.h | 1 +=0D drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 3 +++=0D drivers/vhost/vdpa.c | 31 ++++++++++++++++++++++++++++=0D include/linux/vdpa.h | 6 ++++++=0D include/uapi/linux/vhost.h | 3 +++=0D include/uapi/linux/vhost_types.h | 2 ++=0D 7 files changed, 67 insertions(+)=0D =0D -- =0D 2.27.0=0D =0D