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=unavailable 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 2CD86C83000 for ; Wed, 29 Apr 2020 16:25:30 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 C77142076B for ; Wed, 29 Apr 2020 16:25:29 +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="M0WbGyn9"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="M0WbGyn9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C77142076B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49C3lV3WBTzDrCF for ; Thu, 30 Apr 2020 02:25:26 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=redhat.com (client-ip=205.139.110.120; helo=us-smtp-1.mimecast.com; envelope-from=david@redhat.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: lists.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=M0WbGyn9; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=M0WbGyn9; dkim-atps=neutral Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49C3NZ5qgBzDqDF for ; Thu, 30 Apr 2020 02:09:01 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588176530; 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=cZEMgwn0RdunIfg2yunfCJF8r1H9z41yqLf2sGNY0wM=; b=M0WbGyn9Y19J0as6sn0UpHe8NbyjD34/LSPGlzdKvj7WR00VV9+gvk4tmvIkwqCWT9U/4T wcWrDIQHYBZab7OgRPUYvsSApxpciT/uXpP1HQryPqjU8Nb+B1PJZpe6xqLGi4nMBznR0Q gsl9e4Zwo6FfbniZqKlhsXg5FO9KvSU= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588176530; 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=cZEMgwn0RdunIfg2yunfCJF8r1H9z41yqLf2sGNY0wM=; b=M0WbGyn9Y19J0as6sn0UpHe8NbyjD34/LSPGlzdKvj7WR00VV9+gvk4tmvIkwqCWT9U/4T wcWrDIQHYBZab7OgRPUYvsSApxpciT/uXpP1HQryPqjU8Nb+B1PJZpe6xqLGi4nMBznR0Q gsl9e4Zwo6FfbniZqKlhsXg5FO9KvSU= 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-494-pvtDQR0OOPCL64QlN-zLcg-1; Wed, 29 Apr 2020 12:08:46 -0400 X-MC-Unique: pvtDQR0OOPCL64QlN-zLcg-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 B80BA107ACCA; Wed, 29 Apr 2020 16:08:44 +0000 (UTC) Received: from t480s.redhat.com (ovpn-114-55.ams2.redhat.com [10.36.114.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8D1E3605F7; Wed, 29 Apr 2020 16:08:41 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Subject: [PATCH v1 3/3] virtio-mem: Add memory with MHP_DRIVER_MANAGED Date: Wed, 29 Apr 2020 18:08:03 +0200 Message-Id: <20200429160803.109056-4-david@redhat.com> In-Reply-To: <20200429160803.109056-1-david@redhat.com> References: <20200429160803.109056-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Content-Transfer-Encoding: quoted-printable X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: virtio-dev@lists.oasis-open.org, linux-hyperv@vger.kernel.org, Michal Hocko , linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-s390@vger.kernel.org, Jason Wang , "Michael S . Tsirkin" , David Hildenbrand , virtualization@lists.linux-foundation.org, linux-mm@kvack.org, Eric Biederman , xen-devel@lists.xenproject.org, Andrew Morton , Michal Hocko , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" We don't want /sys/firmware/memmap entries and we want to indicate our memory as "System RAM (driver managed)" in /proc/iomem. This is especially relevant for kexec-tools, which have to be updated to support dumping virtio-mem memory after this patch. Expected behavior in kexec-tools: - Don't use this memory when creating a fixed-up firmware memmap. Works now out of the box on x86-64. - Don't use this memory for placing kexec segments. Works now out of the box on x86-64. - Consider "System RAM (driver managed)" when creating the elfcorehdr for kdump. This memory has to be dumped. Needs update of kexec-tools. With this patch on x86-64: /proc/iomem: 00000000-00000fff : Reserved 00001000-0009fbff : System RAM [...] fffc0000-ffffffff : Reserved 100000000-13fffffff : System RAM 140000000-147ffffff : System RAM (driver managed) 340000000-347ffffff : System RAM (driver managed) 348000000-34fffffff : System RAM (driver managed) [..] 3280000000-32ffffffff : PCI Bus 0000:00 /sys/firmware/memmap: 0000000000000000-000000000009fc00 (System RAM) 000000000009fc00-00000000000a0000 (Reserved) 00000000000f0000-0000000000100000 (Reserved) 0000000000100000-00000000bffe0000 (System RAM) 00000000bffe0000-00000000c0000000 (Reserved) 00000000feffc000-00000000ff000000 (Reserved) 00000000fffc0000-0000000100000000 (Reserved) 0000000100000000-0000000140000000 (System RAM) Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: Michal Hocko Cc: Eric Biederman Signed-off-by: David Hildenbrand --- drivers/virtio/virtio_mem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 3101cbf9e59d..6f658d1aeac4 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -421,7 +421,8 @@ static int virtio_mem_mb_add(struct virtio_mem *vm, u= nsigned long mb_id) nid =3D memory_add_physaddr_to_nid(addr); =20 dev_dbg(&vm->vdev->dev, "adding memory block: %lu\n", mb_id); - return add_memory(nid, addr, memory_block_size_bytes(), 0); + return add_memory(nid, addr, memory_block_size_bytes(), + MHP_DRIVER_MANAGED); } =20 /* --=20 2.25.3