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 55F36C00140 for ; Fri, 5 Aug 2022 16:39:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239415AbiHEQjY (ORCPT ); Fri, 5 Aug 2022 12:39:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236318AbiHEQjV (ORCPT ); Fri, 5 Aug 2022 12:39:21 -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 78E3A17E39 for ; Fri, 5 Aug 2022 09:39:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659717558; 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=8dScA6JUmpCpYCRdiutW+/aSuL6ex1vBpZQLy4Oi1NQ=; b=U0VBOpLL0ME7Bj4V3xS6KAQDfg/RNL3Z2KnUuuKkxD5xlvK4i2udszhdrisLuO66E5TTiP AlrhUaQqGSeRoryiLvvnvxfOOQxKxWKgRUiGTv+sfx/awsoviItePbXFmNloiMPmVqecXv CelzTGVxGRrGbwiF69tliCIRLHBGND4= 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-368-BXv-nhHqOJ6YO7kiq1s9VA-1; Fri, 05 Aug 2022 12:39:15 -0400 X-MC-Unique: BXv-nhHqOJ6YO7kiq1s9VA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id F034685A587; Fri, 5 Aug 2022 16:39:14 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.29]) by smtp.corp.redhat.com (Postfix) with ESMTP id E79352166B2A; Fri, 5 Aug 2022 16:39:11 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , Eli Cohen , Zhu Lingshan , "Michael S. Tsirkin" , Gautam Dawar , Stefano Garzarella , Parav Pandit , Cindy Lu , "Gonglei (Arei)" , Jason Wang , Cornelia Huck , kvm@vger.kernel.org, Paolo Bonzini , Liuxiangdong , Laurent Vivier , Harpreet Singh Anand Subject: [PATCH v4 0/6] ASID support in vhost-vdpa net Date: Fri, 5 Aug 2022 18:39:03 +0200 Message-Id: <20220805163909.872646-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Control VQ is the way net devices use to send changes to the device state, = like=0D the number of active queues or its mac address.=0D =0D QEMU needs to intercept this queue so it can track these changes and is abl= e to=0D migrate the device. It can do it from 1576dbb5bbc4 ("vdpa: Add x-svq to=0D NetdevVhostVDPAOptions"). However, to enable x-svq implies to shadow all Vi= rtIO=0D device's virtqueues, which will damage performance.=0D =0D This series adds address space isolation, so the device and the guest=0D communicate directly with them (passthrough) and CVQ communication is split= in=0D two: The guest communicates with QEMU and QEMU forwards the commands to the= =0D device.=0D =0D For example, NIC_RX_FILTER_CHANGED without the need of x-svq parameter can = be=0D received in QMP now.=0D =0D This series is based on [1], and this needs to be applied on top of that. = Each=0D one of them adds a feature on isolation and could be merged individually on= ce=0D conflicts are solved.=0D =0D Comments are welcome. Thanks!=0D =0D v4:=0D - Rebased on last CVQ start series, that allocated CVQ cmd bufs at load=0D - Squash vhost_vdpa_cvq_group_is_independent.=0D - Do not check for cvq index on vhost_vdpa_net_prepare, we only have one=0D that callback registered in that NetClientInfo.=0D - Add comment specifying behavior if device does not support _F_ASID=0D - Update headers to a later Linux commit to not to remove SETUP_RNG_SEED=0D =0D v3:=0D - Do not return an error but just print a warning if vdpa device initializa= tion=0D returns failure while getting AS num of VQ groups=0D - Delete extra newline=0D =0D v2:=0D - Much as commented on series [1], handle vhost_net backend through=0D NetClientInfo callbacks instead of directly.=0D - Fix not freeing SVQ properly when device does not support CVQ=0D - Add BIT_ULL missed checking device's backend feature for _F_ASID.=0D =0D [1] https://lists.nongnu.org/archive/html/qemu-devel/2022-08/msg00349.html= =0D =0D Eugenio P=C3=A9rez (6):=0D linux-headers: Update kernel headers=0D vdpa: Use v->shadow_vqs_enabled in vhost_vdpa_svqs_start & stop=0D vdpa: Allocate SVQ unconditionally=0D vdpa: Add asid parameter to vhost_vdpa_dma_map/unmap=0D vdpa: Store x-svq parameter in VhostVDPAState=0D vdpa: Always start CVQ in SVQ mode=0D =0D include/hw/virtio/vhost-vdpa.h | 8 +-=0D include/standard-headers/asm-x86/bootparam.h | 7 +-=0D include/standard-headers/drm/drm_fourcc.h | 69 ++++++++++=0D include/standard-headers/linux/ethtool.h | 1 +=0D include/standard-headers/linux/input.h | 12 +-=0D include/standard-headers/linux/pci_regs.h | 1 +=0D include/standard-headers/linux/vhost_types.h | 11 +-=0D include/standard-headers/linux/virtio_ids.h | 14 +-=0D linux-headers/asm-arm64/kvm.h | 27 ++++=0D linux-headers/asm-generic/unistd.h | 4 +-=0D linux-headers/asm-riscv/kvm.h | 20 +++=0D linux-headers/asm-riscv/unistd.h | 3 +-=0D linux-headers/asm-x86/kvm.h | 11 +-=0D linux-headers/asm-x86/mman.h | 14 --=0D linux-headers/linux/kvm.h | 56 +++++++-=0D linux-headers/linux/userfaultfd.h | 10 +-=0D linux-headers/linux/vfio.h | 4 +-=0D linux-headers/linux/vhost.h | 26 +++-=0D hw/virtio/vhost-vdpa.c | 65 ++++-----=0D net/vhost-vdpa.c | 134 ++++++++++++++++++-=0D hw/virtio/trace-events | 4 +-=0D 21 files changed, 408 insertions(+), 93 deletions(-)=0D =0D --=0D 2.31.1=0D =0D