From patchwork Sun Nov 1 21:00:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 1391843 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=pass (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=HFF0Sjtz; 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 4CPT9x6P7Dz9sRR for ; Mon, 2 Nov 2020 08:06:29 +1100 (AEDT) Received: from localhost ([::1]:33418 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kZKYV-0003zm-Q2 for incoming@patchwork.ozlabs.org; Sun, 01 Nov 2020 16:06:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60374) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kZKTJ-0005q9-2N for qemu-devel@nongnu.org; Sun, 01 Nov 2020 16:01:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:57004) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kZKTG-0005Rh-8L for qemu-devel@nongnu.org; Sun, 01 Nov 2020 16:01:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604264461; 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=YIEqP5aCBlkgA+SoSrywyTB8VENVOtpiIo/ajSQpXG8=; b=HFF0Sjtz8Tq1QAcknrq7CRa/x/7sdlhaQZWArnk8RFh9MvksilTqVRberYmEiAX9pmoE5F Aq09ysLNKUJvpEc0ov+8tuBmFvEw1gb+vmn6bx0mS12EgPMTp3Fn4G0hn/TU+TwjXUySOE rMRF3eorz7z33L8dWXf+U/a2QbxC+VA= 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-528-ddQhXhQRN6-SLMjlR8ztwQ-1; Sun, 01 Nov 2020 16:00:59 -0500 X-MC-Unique: ddQhXhQRN6-SLMjlR8ztwQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0A6571087D65; Sun, 1 Nov 2020 21:00:57 +0000 (UTC) Received: from gimli.home (ovpn-112-213.phx2.redhat.com [10.3.112.213]) by smtp.corp.redhat.com (Postfix) with ESMTP id 86D3C60C0F; Sun, 1 Nov 2020 21:00:53 +0000 (UTC) Subject: [PULL v3 12/32] vfio: Add function to start and stop dirty pages tracking From: Alex Williamson To: qemu-devel@nongnu.org Date: Sun, 01 Nov 2020 14:00:53 -0700 Message-ID: <160426445317.24886.6057000348810282444.stgit@gimli.home> In-Reply-To: <160426371498.24886.12193840637250368669.stgit@gimli.home> References: <160426371498.24886.12193840637250368669.stgit@gimli.home> User-Agent: StGit/0.21-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=alex.williamson@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=alex.williamson@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/01 15:59:21 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 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_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, 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: Kirti Wankhede , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Kirti Wankhede Call VFIO_IOMMU_DIRTY_PAGES ioctl to start and stop dirty pages tracking for VFIO devices. Signed-off-by: Kirti Wankhede Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Alex Williamson --- hw/vfio/migration.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 39503b49e33d..a248effb3786 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -11,6 +11,7 @@ #include "qemu/main-loop.h" #include "qemu/cutils.h" #include +#include #include "sysemu/runstate.h" #include "hw/vfio/vfio-common.h" @@ -391,10 +392,40 @@ static int vfio_load_device_config_state(QEMUFile *f, void *opaque) return qemu_file_get_error(f); } +static int vfio_set_dirty_page_tracking(VFIODevice *vbasedev, bool start) +{ + int ret; + VFIOMigration *migration = vbasedev->migration; + VFIOContainer *container = vbasedev->group->container; + struct vfio_iommu_type1_dirty_bitmap dirty = { + .argsz = sizeof(dirty), + }; + + if (start) { + if (migration->device_state & VFIO_DEVICE_STATE_SAVING) { + dirty.flags = VFIO_IOMMU_DIRTY_PAGES_FLAG_START; + } else { + return -EINVAL; + } + } else { + dirty.flags = VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP; + } + + ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, &dirty); + if (ret) { + error_report("Failed to set dirty tracking flag 0x%x errno: %d", + dirty.flags, errno); + return -errno; + } + return ret; +} + static void vfio_migration_cleanup(VFIODevice *vbasedev) { VFIOMigration *migration = vbasedev->migration; + vfio_set_dirty_page_tracking(vbasedev, false); + if (migration->region.mmaps) { vfio_region_unmap(&migration->region); } @@ -435,6 +466,11 @@ static int vfio_save_setup(QEMUFile *f, void *opaque) return ret; } + ret = vfio_set_dirty_page_tracking(vbasedev, true); + if (ret) { + return ret; + } + qemu_put_be64(f, VFIO_MIG_FLAG_END_OF_STATE); ret = qemu_file_get_error(f);