From patchwork Fri Nov 20 18:50:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 1404034 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com 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=R4QjhXmk; dkim-atps=neutral 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 4Cd5K526D9z9sVZ for ; Sat, 21 Nov 2020 05:52:57 +1100 (AEDT) Received: from localhost ([::1]:58742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kgBWa-00047I-SR for incoming@patchwork.ozlabs.org; Fri, 20 Nov 2020 13:52:48 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40668) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kgBVl-00045U-O7 for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:51:58 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:35261) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kgBVZ-0006sY-Cz for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:51:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605898295; 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=VF68uyWFilZpHj5bABsThH0akvfjRoVBR9ksieJzwHo=; b=R4QjhXmk3NTOZ5E1hI4nQ0rI7jo+E6TZDmhwBc7LGnGJJz9wQv6riO0NWMERY7lW305SUH CxERRyiEF9wEiuuPh4eeZp2uR7GzwzhqCZxLXGiQ0Meau3DF9tKKZKx+W8Z9LTlOl3JqF0 mq/+Ia3EyAH2be5pGfwUXgHEh1wBZ8k= 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-125-5oC7RBGnOfe3nRKgW98M6A-1; Fri, 20 Nov 2020 13:51:33 -0500 X-MC-Unique: 5oC7RBGnOfe3nRKgW98M6A-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C2F0E1842159; Fri, 20 Nov 2020 18:51:30 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-112-88.ams2.redhat.com [10.36.112.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 440965C1D5; Fri, 20 Nov 2020 18:51:23 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 01/27] vhost: Add vhost_dev_can_log Date: Fri, 20 Nov 2020 19:50:39 +0100 Message-Id: <20201120185105.279030-2-eperezma@redhat.com> In-Reply-To: <20201120185105.279030-1-eperezma@redhat.com> References: <20201120185105.279030-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Received-SPF: pass client-ip=216.205.24.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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: kvm@vger.kernel.org, "Michael S. Tsirkin" , Jason Wang , Daniel Daly , virtualization@lists.linux-foundation.org, Liran Alon , Eli Cohen , Nitin Shrivastav , Alex Barba , Christophe Fontaine , Juan Quintela , Lee Ballard , Lars Ganrot , Rob Miller , Stefano Garzarella , Howard Cai , Parav Pandit , vm , Salil Mehta , Stephen Finucane , Xiao W Wang , Sean Mooney , Stefan Hajnoczi , Jim Harford , Dmytro Kazantsev , Siwei Liu , Harpreet Singh Anand , Michael Lilja , Max Gurtovoy Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Just syntactic sugar. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 614ccc2bcb..2bd8cdf893 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -61,6 +61,11 @@ bool vhost_has_free_slot(void) return slots_limit > used_memslots; } +static bool vhost_dev_can_log(const struct vhost_dev *hdev) +{ + return hdev->features & (0x1ULL << VHOST_F_LOG_ALL); +} + static void vhost_dev_sync_region(struct vhost_dev *dev, MemoryRegionSection *section, uint64_t mfirst, uint64_t mlast, @@ -1347,7 +1352,7 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque, }; if (hdev->migration_blocker == NULL) { - if (!(hdev->features & (0x1ULL << VHOST_F_LOG_ALL))) { + if (!vhost_dev_can_log(hdev)) { error_setg(&hdev->migration_blocker, "Migration disabled: vhost lacks VHOST_F_LOG_ALL feature."); } else if (vhost_dev_log_is_shared(hdev) && !qemu_memfd_alloc_check()) {