From patchwork Tue Sep 28 18:22:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 12523535 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A982EC433F5 for ; Tue, 28 Sep 2021 18:28:19 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 7295E613A7 for ; Tue, 28 Sep 2021 18:28:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7295E613A7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.198372.351838 (Exim 4.92) (envelope-from ) id 1mVHps-0005GI-Bt; Tue, 28 Sep 2021 18:28:12 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 198372.351838; Tue, 28 Sep 2021 18:28:12 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVHps-0005GB-92; Tue, 28 Sep 2021 18:28:12 +0000 Received: by outflank-mailman (input) for mailman id 198372; Tue, 28 Sep 2021 18:28:10 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVHna-0007ni-Nl for xen-devel@lists.xenproject.org; Tue, 28 Sep 2021 18:25:50 +0000 Received: from us-smtp-delivery-124.mimecast.com (unknown [216.205.24.124]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 6fe75553-7baf-49e2-921e-2b1fb77390a7; Tue, 28 Sep 2021 18:25:39 +0000 (UTC) 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-97-b_LGb36yMIiFspS9xQbtiA-1; Tue, 28 Sep 2021 14:25:37 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 507C01018721; Tue, 28 Sep 2021 18:25:35 +0000 (UTC) Received: from t480s.redhat.com (unknown [10.39.194.120]) by smtp.corp.redhat.com (Postfix) with ESMTP id B481560854; Tue, 28 Sep 2021 18:25:04 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6fe75553-7baf-49e2-921e-2b1fb77390a7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632853539; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=R7+JUDG91uhwuwaeltTRSiOKiaWOQXIYAMDdQ0A5p1w=; b=Kj43dMu7139d57FIT7+X6axopiYK5m05wonndObsxwzICcp6IEp3+sqfdgZC3FLtwrTSOA 7disbkCL6Vx4DwfSU5b6hcyMUMDdWw+F+aRiFVX13hwludVeQt+PC4IYrVzS9quNqacMtP 5erP7fWiFNp7Jb3ehKr3SZQ/ZIZ59iA= X-MC-Unique: b_LGb36yMIiFspS9xQbtiA-1 From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: David Hildenbrand , Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , "Michael S. Tsirkin" , Jason Wang , Dave Young , Baoquan He , Vivek Goyal , Michal Hocko , Oscar Salvador , Mike Rapoport , "Rafael J. Wysocki" , x86@kernel.org, xen-devel@lists.xenproject.org, virtualization@lists.linux-foundation.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v1 7/8] virtio-mem: factor out hotplug specifics from virtio_mem_remove() into virtio_mem_deinit_hotplug() Date: Tue, 28 Sep 2021 20:22:57 +0200 Message-Id: <20210928182258.12451-8-david@redhat.com> In-Reply-To: <20210928182258.12451-1-david@redhat.com> References: <20210928182258.12451-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Let's prepare for a new virtio-mem kdump mode in which we don't actually hot(un)plug any memory but only observe the state of device blocks. Signed-off-by: David Hildenbrand --- drivers/virtio/virtio_mem.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 1be3ee7f684d..76d8aef3cfd2 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -2667,9 +2667,8 @@ static int virtio_mem_probe(struct virtio_device *vdev) return rc; } -static void virtio_mem_remove(struct virtio_device *vdev) +static void virtio_mem_deinit_hotplug(struct virtio_mem *vm) { - struct virtio_mem *vm = vdev->priv; unsigned long mb_id; int rc; @@ -2716,7 +2715,8 @@ static void virtio_mem_remove(struct virtio_device *vdev) * away. Warn at least. */ if (virtio_mem_has_memory_added(vm)) { - dev_warn(&vdev->dev, "device still has system memory added\n"); + dev_warn(&vm->vdev->dev, + "device still has system memory added\n"); } else { virtio_mem_delete_resource(vm); kfree_const(vm->resource_name); @@ -2730,6 +2730,13 @@ static void virtio_mem_remove(struct virtio_device *vdev) } else { vfree(vm->bbm.bb_states); } +} + +static void virtio_mem_remove(struct virtio_device *vdev) +{ + struct virtio_mem *vm = vdev->priv; + + virtio_mem_deinit_hotplug(vm); /* reset the device and cleanup the queues */ vdev->config->reset(vdev);