From patchwork Tue Sep 21 16:16:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 1530792 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=h/FC2542; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4HDRTY59ccz9sW5 for ; Wed, 22 Sep 2021 02:19:45 +1000 (AEST) Received: from localhost ([::1]:38520 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mSiUh-0001cS-Hd for incoming@patchwork.ozlabs.org; Tue, 21 Sep 2021 12:19:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43772) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSiS4-00065r-35 for qemu-devel@nongnu.org; Tue, 21 Sep 2021 12:17:00 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:40611) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSiS1-0001at-Hg for qemu-devel@nongnu.org; Tue, 21 Sep 2021 12:16:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632241016; 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: in-reply-to:in-reply-to:references:references; bh=B0v1V8vjODIjhOKtTsA9RMYuAbBBRoCUgAyHkSkM+rw=; b=h/FC2542Jf6P7Ghxha0ZvnUhNwSV+9JHtnidw/7e9lTuVtL39zv0O/8N0NwDC8QJtk72kt YwSaL7A37ODB4R/uMArc0H7pokzoOhQ3MTyi+qcnp52cwrLRFTexiz9QBSyFdbIh/DkKH/ wsE/VNf26IY/yF21iTHu2mT62A0A52o= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-491-GgK60z36O9WOd68I-oF3tw-1; Tue, 21 Sep 2021 12:16:55 -0400 X-MC-Unique: GgK60z36O9WOd68I-oF3tw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1D8CE1015DBD; Tue, 21 Sep 2021 16:16:54 +0000 (UTC) Received: from steredhat.redhat.com (unknown [10.39.194.165]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4B6EC69FAD; Tue, 21 Sep 2021 16:16:50 +0000 (UTC) From: Stefano Garzarella To: qemu-devel@nongnu.org Subject: [PATCH v2 1/2] vhost-vsock: fix migration issue when seqpacket is supported Date: Tue, 21 Sep 2021 18:16:41 +0200 Message-Id: <20210921161642.206461-2-sgarzare@redhat.com> In-Reply-To: <20210921161642.206461-1-sgarzare@redhat.com> References: <20210921161642.206461-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=sgarzare@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=sgarzare@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.475, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Cc: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jiang Wang , "Michael S. Tsirkin" , Stefan Hajnoczi , Arseny Krasnov Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Commit 1e08fd0a46 ("vhost-vsock: SOCK_SEQPACKET feature bit support") enabled the SEQPACKET feature bit. This commit is released with QEMU 6.1, so if we try to migrate a VM where the host kernel supports SEQPACKET but machine type version is less than 6.1, we get the following errors: Features 0x130000002 unsupported. Allowed features: 0x179000000 Failed to load virtio-vhost_vsock:virtio error while loading state for instance 0x0 of device '0000:00:05.0/virtio-vhost_vsock' load of migration failed: Operation not permitted Let's disable the feature bit for machine types < 6.1. We add a new OnOffAuto property for this, called `seqpacket`. When it is `auto` (default), QEMU behaves as before, trying to enable the feature, when it is `on` QEMU will fail if the backend (vhost-vsock kernel module) doesn't support it. Fixes: 1e08fd0a46 ("vhost-vsock: SOCK_SEQPACKET feature bit support") Cc: qemu-stable@nongnu.org Reported-by: Jiang Wang Signed-off-by: Stefano Garzarella --- v2: - used OnOffAuto `seqpacket` property instead of boolean `features` [stefanha] --- include/hw/virtio/vhost-vsock.h | 3 +++ hw/core/machine.c | 1 + hw/virtio/vhost-vsock.c | 19 ++++++++++++++++--- 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/vhost-vsock.h b/include/hw/virtio/vhost-vsock.h index 84f4e727c7..3f121a624f 100644 --- a/include/hw/virtio/vhost-vsock.h +++ b/include/hw/virtio/vhost-vsock.h @@ -30,6 +30,9 @@ struct VHostVSock { VHostVSockCommon parent; VHostVSockConf conf; + /* features */ + OnOffAuto seqpacket; + /*< public >*/ }; diff --git a/hw/core/machine.c b/hw/core/machine.c index 067f42b528..7e2851feb9 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -46,6 +46,7 @@ GlobalProperty hw_compat_6_0[] = { { "nvme-ns", "eui64-default", "off"}, { "e1000", "init-vet", "off" }, { "e1000e", "init-vet", "off" }, + { "vhost-vsock-device", "seqpacket", "off" }, }; const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0); diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c index 1b1a5c70ed..dade0da031 100644 --- a/hw/virtio/vhost-vsock.c +++ b/hw/virtio/vhost-vsock.c @@ -114,10 +114,21 @@ static uint64_t vhost_vsock_get_features(VirtIODevice *vdev, Error **errp) { VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + VHostVSock *vsock = VHOST_VSOCK(vdev); + + if (vsock->seqpacket != ON_OFF_AUTO_OFF) { + virtio_add_feature(&requested_features, VIRTIO_VSOCK_F_SEQPACKET); + } + + requested_features = vhost_get_features(&vvc->vhost_dev, feature_bits, + requested_features); + + if (vsock->seqpacket == ON_OFF_AUTO_ON && + !virtio_has_feature(requested_features, VIRTIO_VSOCK_F_SEQPACKET)) { + error_setg(errp, "vhost-vsock backend doesn't support seqpacket"); + } - virtio_add_feature(&requested_features, VIRTIO_VSOCK_F_SEQPACKET); - return vhost_get_features(&vvc->vhost_dev, feature_bits, - requested_features); + return requested_features; } static const VMStateDescription vmstate_virtio_vhost_vsock = { @@ -218,6 +229,8 @@ static void vhost_vsock_device_unrealize(DeviceState *dev) static Property vhost_vsock_properties[] = { DEFINE_PROP_UINT64("guest-cid", VHostVSock, conf.guest_cid, 0), DEFINE_PROP_STRING("vhostfd", VHostVSock, conf.vhostfd), + DEFINE_PROP_ON_OFF_AUTO("seqpacket", VHostVSock, seqpacket, + ON_OFF_AUTO_AUTO), DEFINE_PROP_END_OF_LIST(), }; From patchwork Tue Sep 21 16:16:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 1530789 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Mpw3OpvP; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4HDRRW5znNz9sW5 for ; Wed, 22 Sep 2021 02:17:59 +1000 (AEST) Received: from localhost ([::1]:60924 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mSiSz-0006B1-3n for incoming@patchwork.ozlabs.org; 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Tue, 21 Sep 2021 12:16:57 -0400 X-MC-Unique: 6QexmSEDOfa6xKfAP5jeLA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 24EA41922960; Tue, 21 Sep 2021 16:16:56 +0000 (UTC) Received: from steredhat.redhat.com (unknown [10.39.194.165]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6BF006D985; Tue, 21 Sep 2021 16:16:54 +0000 (UTC) From: Stefano Garzarella To: qemu-devel@nongnu.org Subject: [PATCH v2 2/2] vhost-vsock: handle common features in vhost-vsock-common Date: Tue, 21 Sep 2021 18:16:42 +0200 Message-Id: <20210921161642.206461-3-sgarzare@redhat.com> In-Reply-To: <20210921161642.206461-1-sgarzare@redhat.com> References: <20210921161642.206461-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=sgarzare@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=sgarzare@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.475, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Cc: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jiang Wang , "Michael S. Tsirkin" , Stefan Hajnoczi , Arseny Krasnov Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" virtio-vsock features, like VIRTIO_VSOCK_F_SEQPACKET, can be handled by vhost-vsock-common parent class. In this way, we can reuse the same code for all virtio-vsock backends (i.e. vhost-vsock, vhost-user-vsock). Let's move `seqpacket` property to vhost-vsock-common class, add vhost_vsock_common_get_features() used by children, and disable `seqpacket` for vhost-user-vsock device for machine types < 6.2. The behavior of vhost-vsock device doesn't change; vhost-user-vsock device now supports `seqpacket` property. Signed-off-by: Stefano Garzarella --- include/hw/virtio/vhost-vsock-common.h | 5 +++++ include/hw/virtio/vhost-vsock.h | 3 --- hw/core/machine.c | 4 +++- hw/virtio/vhost-user-vsock.c | 4 +++- hw/virtio/vhost-vsock-common.c | 31 ++++++++++++++++++++++++++ hw/virtio/vhost-vsock.c | 24 +------------------- 6 files changed, 43 insertions(+), 28 deletions(-) diff --git a/include/hw/virtio/vhost-vsock-common.h b/include/hw/virtio/vhost-vsock-common.h index e412b5ee98..d8b565b4da 100644 --- a/include/hw/virtio/vhost-vsock-common.h +++ b/include/hw/virtio/vhost-vsock-common.h @@ -35,6 +35,9 @@ struct VHostVSockCommon { VirtQueue *trans_vq; QEMUTimer *post_load_timer; + + /* features */ + OnOffAuto seqpacket; }; int vhost_vsock_common_start(VirtIODevice *vdev); @@ -43,5 +46,7 @@ int vhost_vsock_common_pre_save(void *opaque); int vhost_vsock_common_post_load(void *opaque, int version_id); void vhost_vsock_common_realize(VirtIODevice *vdev, const char *name); void vhost_vsock_common_unrealize(VirtIODevice *vdev); +uint64_t vhost_vsock_common_get_features(VirtIODevice *vdev, uint64_t features, + Error **errp); #endif /* _QEMU_VHOST_VSOCK_COMMON_H */ diff --git a/include/hw/virtio/vhost-vsock.h b/include/hw/virtio/vhost-vsock.h index 3f121a624f..84f4e727c7 100644 --- a/include/hw/virtio/vhost-vsock.h +++ b/include/hw/virtio/vhost-vsock.h @@ -30,9 +30,6 @@ struct VHostVSock { VHostVSockCommon parent; VHostVSockConf conf; - /* features */ - OnOffAuto seqpacket; - /*< public >*/ }; diff --git a/hw/core/machine.c b/hw/core/machine.c index 7e2851feb9..28318b3436 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -37,7 +37,9 @@ #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-pci.h" -GlobalProperty hw_compat_6_1[] = {}; +GlobalProperty hw_compat_6_1[] = { + { "vhost-user-vsock-device", "seqpacket", "off" }, +}; const size_t hw_compat_6_1_len = G_N_ELEMENTS(hw_compat_6_1); GlobalProperty hw_compat_6_0[] = { diff --git a/hw/virtio/vhost-user-vsock.c b/hw/virtio/vhost-user-vsock.c index 6095ed7349..52bd682c34 100644 --- a/hw/virtio/vhost-user-vsock.c +++ b/hw/virtio/vhost-user-vsock.c @@ -81,7 +81,9 @@ static uint64_t vuv_get_features(VirtIODevice *vdev, { VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); - return vhost_get_features(&vvc->vhost_dev, user_feature_bits, features); + features = vhost_get_features(&vvc->vhost_dev, user_feature_bits, features); + + return vhost_vsock_common_get_features(vdev, features, errp); } static const VMStateDescription vuv_vmstate = { diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c index 4ad6e234ad..3f3771274e 100644 --- a/hw/virtio/vhost-vsock-common.c +++ b/hw/virtio/vhost-vsock-common.c @@ -18,6 +18,30 @@ #include "qemu/iov.h" #include "monitor/monitor.h" +const int feature_bits[] = { + VIRTIO_VSOCK_F_SEQPACKET, + VHOST_INVALID_FEATURE_BIT +}; + +uint64_t vhost_vsock_common_get_features(VirtIODevice *vdev, uint64_t features, + Error **errp) +{ + VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); + + if (vvc->seqpacket != ON_OFF_AUTO_OFF) { + virtio_add_feature(&features, VIRTIO_VSOCK_F_SEQPACKET); + } + + features = vhost_get_features(&vvc->vhost_dev, feature_bits, features); + + if (vvc->seqpacket == ON_OFF_AUTO_ON && + !virtio_has_feature(features, VIRTIO_VSOCK_F_SEQPACKET)) { + error_setg(errp, "vhost-vsock backend doesn't support seqpacket"); + } + + return features; +} + int vhost_vsock_common_start(VirtIODevice *vdev) { VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); @@ -231,11 +255,18 @@ void vhost_vsock_common_unrealize(VirtIODevice *vdev) virtio_cleanup(vdev); } +static Property vhost_vsock_common_properties[] = { + DEFINE_PROP_ON_OFF_AUTO("seqpacket", VHostVSockCommon, seqpacket, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_END_OF_LIST(), +}; + static void vhost_vsock_common_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + device_class_set_props(dc, vhost_vsock_common_properties); set_bit(DEVICE_CATEGORY_MISC, dc->categories); vdc->guest_notifier_mask = vhost_vsock_common_guest_notifier_mask; vdc->guest_notifier_pending = vhost_vsock_common_guest_notifier_pending; diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c index dade0da031..478c0c9a87 100644 --- a/hw/virtio/vhost-vsock.c +++ b/hw/virtio/vhost-vsock.c @@ -21,11 +21,6 @@ #include "hw/virtio/vhost-vsock.h" #include "monitor/monitor.h" -const int feature_bits[] = { - VIRTIO_VSOCK_F_SEQPACKET, - VHOST_INVALID_FEATURE_BIT -}; - static void vhost_vsock_get_config(VirtIODevice *vdev, uint8_t *config) { VHostVSock *vsock = VHOST_VSOCK(vdev); @@ -113,22 +108,7 @@ static uint64_t vhost_vsock_get_features(VirtIODevice *vdev, uint64_t requested_features, Error **errp) { - VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); - VHostVSock *vsock = VHOST_VSOCK(vdev); - - if (vsock->seqpacket != ON_OFF_AUTO_OFF) { - virtio_add_feature(&requested_features, VIRTIO_VSOCK_F_SEQPACKET); - } - - requested_features = vhost_get_features(&vvc->vhost_dev, feature_bits, - requested_features); - - if (vsock->seqpacket == ON_OFF_AUTO_ON && - !virtio_has_feature(requested_features, VIRTIO_VSOCK_F_SEQPACKET)) { - error_setg(errp, "vhost-vsock backend doesn't support seqpacket"); - } - - return requested_features; + return vhost_vsock_common_get_features(vdev, requested_features, errp); } static const VMStateDescription vmstate_virtio_vhost_vsock = { @@ -229,8 +209,6 @@ static void vhost_vsock_device_unrealize(DeviceState *dev) static Property vhost_vsock_properties[] = { DEFINE_PROP_UINT64("guest-cid", VHostVSock, conf.guest_cid, 0), DEFINE_PROP_STRING("vhostfd", VHostVSock, conf.vhostfd), - DEFINE_PROP_ON_OFF_AUTO("seqpacket", VHostVSock, seqpacket, - ON_OFF_AUTO_AUTO), DEFINE_PROP_END_OF_LIST(), };