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 X-Spam-Level: X-Spam-Status: No, score=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E153C35247 for ; Mon, 3 Feb 2020 18:41:21 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0E36720721 for ; Mon, 3 Feb 2020 18:41:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="d9SIO80U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0E36720721 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iygeu-00039i-87 for qemu-devel@archiver.kernel.org; Mon, 03 Feb 2020 13:41:20 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:59945) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iygWN-0008FV-IB for qemu-devel@nongnu.org; Mon, 03 Feb 2020 13:32:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iygWM-00023p-FE for qemu-devel@nongnu.org; Mon, 03 Feb 2020 13:32:31 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:37319 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iygWM-00023B-9S for qemu-devel@nongnu.org; Mon, 03 Feb 2020 13:32:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580754749; 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=31XOYPT0uBnH+X75iJWU6zJ+I/jmJ21OKKjKlfz8Quo=; b=d9SIO80UYwz8c2GIKlEzRDhcZ955mQPpPPg2+O6xtQ3yYIX9YSP1FfrtcN8Syn/YH672Me YLTkcoJ4gsj5vdiIbeQfmuDgvK3hz1vGVWd/UaeyTcbsVVITcEvNAktY/3m25wrEI7snZ+ 9p4Yo6ziCkTSXPB1UN9Sr0/wO1OeB+A= 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-299-83nBqtnxPUKyle1h-hBmHQ-1; Mon, 03 Feb 2020 13:32:25 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 62D511005502; Mon, 3 Feb 2020 18:32:24 +0000 (UTC) Received: from t480s.redhat.com (ovpn-117-77.ams2.redhat.com [10.36.117.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 229B45DA83; Mon, 3 Feb 2020 18:32:19 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v1 11/13] util: vfio-helpers: Implement ram_block_resized() Date: Mon, 3 Feb 2020 19:31:23 +0100 Message-Id: <20200203183125.164879-12-david@redhat.com> In-Reply-To: <20200203183125.164879-1-david@redhat.com> References: <20200203183125.164879-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: 83nBqtnxPUKyle1h-hBmHQ-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: Eduardo Habkost , "Michael S . Tsirkin" , David Hildenbrand , "Dr . David Alan Gilbert" , Markus Armbruster , Alex Williamson , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Let's implement ram_block_resized(). Note: Resizing is currently only allowed during reboot or when migration starts. Cc: "Dr. David Alan Gilbert" Cc: Paolo Bonzini Cc: Markus Armbruster Cc: Alex Williamson Signed-off-by: David Hildenbrand --- util/vfio-helpers.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c index 71e02e7f35..57d77e9480 100644 --- a/util/vfio-helpers.c +++ b/util/vfio-helpers.c @@ -395,11 +395,24 @@ static void qemu_vfio_ram_block_removed(RAMBlockNotif= ier *n, } } =20 +static void qemu_vfio_ram_block_resized(RAMBlockNotifier *n, void *host, + size_t oldsize, size_t newsize) +{ + QEMUVFIOState *s =3D container_of(n, QEMUVFIOState, ram_notifier); + if (host) { + trace_qemu_vfio_ram_block_resized(s, host, oldsize, newsize); + /* Note: Not atomic - we need a new ioctl for that. */ + qemu_vfio_ram_block_removed(n, host, oldsize); + qemu_vfio_ram_block_added(n, host, newsize); + } +} + static void qemu_vfio_open_common(QEMUVFIOState *s) { qemu_mutex_init(&s->lock); s->ram_notifier.ram_block_added =3D qemu_vfio_ram_block_added; s->ram_notifier.ram_block_removed =3D qemu_vfio_ram_block_removed; + s->ram_notifier.ram_block_resized =3D qemu_vfio_ram_block_resized; s->low_water_mark =3D QEMU_VFIO_IOVA_MIN; s->high_water_mark =3D QEMU_VFIO_IOVA_MAX; ram_block_notifier_add(&s->ram_notifier); --=20 2.24.1