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 CEBC1ECAAD3 for ; Thu, 15 Sep 2022 08:51:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229919AbiIOIvH (ORCPT ); Thu, 15 Sep 2022 04:51:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229913AbiIOIvE (ORCPT ); Thu, 15 Sep 2022 04:51:04 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 477C77CB75 for ; Thu, 15 Sep 2022 01:51:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1663231862; 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=GENWxAVvpWd3dVo6dm0mZc+x/Kx2jIgk/iiRb5OOLbg=; b=QoprnRvRHbRpUWvzlHTWafzIM8LgWXQZu0nyLr/fJvGJCMo2GYsot54xcwsFICbE5RONkg gXFrsU3zbtnGyUl9EbMVcjlV9hTVuII/g8X14VESSCYSf4j0zzr2/0H5s+qHQc22guO2YJ KIxR53GhScQsoV4Bd39tHNb/5YuTXL0= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-255-dSUG1HUlNtCHrmg3fr2PXQ-1; Thu, 15 Sep 2022 04:50:58 -0400 X-MC-Unique: dSUG1HUlNtCHrmg3fr2PXQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 92604858F13; Thu, 15 Sep 2022 08:50:57 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-201.pek2.redhat.com [10.72.12.201]) by smtp.corp.redhat.com (Postfix) with ESMTP id 108A91759E; Thu, 15 Sep 2022 08:50:51 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: elic@nvidia.com, si-wei.liu@oracle.com, parav@nvidia.com, wuzongyong@linux.alibaba.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, eperezma@redhat.com, lingshan.zhu@intel.com, gdawar@xilinx.com, lulu@redhat.com, xieyongji@bytedance.com Subject: [PATCH 0/3] vdpa: device feature provisioning Date: Thu, 15 Sep 2022 16:50:45 +0800 Message-Id: <20220915085048.12840-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi All: Virtio features are neogiated between the device and the drivers. This allows the mediation layer like vDPA to hide some features from the driver to faciliate the cross vendor live migration: vDPA on the source supports feature set X vDPA on the destination supports feature set Y Management can simply provision the vDPA instance with features X&Y on both source and destination to let the vDPA can be migrate-able between the two vDPA devies with different features support. This series tries to allow the device features to be provisioned via netlink to achieve this. Please review. Thanks Jason Wang (3): vdpa: device feature provisioning vdpa_sim_net: support feature provisioning vp_vdpa: support feature provisioning drivers/vdpa/vdpa.c | 5 +++++ drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 11 ++++++++++- drivers/vdpa/virtio_pci/vp_vdpa.c | 16 ++++++++++++++-- include/linux/vdpa.h | 1 + include/uapi/linux/vdpa.h | 2 ++ 5 files changed, 32 insertions(+), 3 deletions(-) -- 2.25.1