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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 67DCFC2D0C2 for ; Tue, 31 Dec 2019 13:11:00 +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 34D85205ED for ; Tue, 31 Dec 2019 13:11:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZCqC5ciE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34D85205ED 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]:42282 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1imHIZ-0005uA-0T for qemu-devel@archiver.kernel.org; Tue, 31 Dec 2019 08:10:59 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:54900) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1imHBr-0005B7-Jr for qemu-devel@nongnu.org; Tue, 31 Dec 2019 08:04:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1imHBq-0002SM-Ae for qemu-devel@nongnu.org; Tue, 31 Dec 2019 08:04:03 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:38159 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1imHBq-0002Q2-4H for qemu-devel@nongnu.org; Tue, 31 Dec 2019 08:04:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1577797441; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AmZVTB7dAUFXmt9nBsUuXJIwbbOeYxCoxcT6SlrnKy8=; b=ZCqC5ciE4C1wmF+7yr/CAuxjonAXxM6hhUMly9553mJfXnLIYTMNI6Pw7IpBjve5hAzR7f UzhtwwygbIgwjMEK326iYmJ0CvApdo8PB+HFjR6U9oY6QxFZ/OIsg7noP9sK5bCsfBGtHT T9/QAJK/pvr3DkZWICi2cmMtXNRsLgo= 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-lq6hQalWPluE7D4a7GYV0A-1; Tue, 31 Dec 2019 08:03:59 -0500 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 554F918031CD for ; Tue, 31 Dec 2019 13:03:58 +0000 (UTC) Received: from dell-r430-03.lab.eng.brq.redhat.com (dell-r430-03.lab.eng.brq.redhat.com [10.37.153.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id CFB54620A6 for ; Tue, 31 Dec 2019 13:03:57 +0000 (UTC) From: Igor Mammedov To: qemu-devel@nongnu.org Subject: [PATCH 10/86] arm:aspeed: actually check RAM size Date: Tue, 31 Dec 2019 14:02:54 +0100 Message-Id: <1577797450-88458-11-git-send-email-imammedo@redhat.com> In-Reply-To: <1577797450-88458-1-git-send-email-imammedo@redhat.com> References: <1577797450-88458-1-git-send-email-imammedo@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: lq6hQalWPluE7D4a7GYV0A-1 X-Mimecast-Spam-Score: 0 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: 207.211.31.120 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" It's supposed that SOC will check if "-m" provided RAM size is valid by setting "ram-size" property and then board would read back valid (possibly corrected value) to allocate/map RAM MemoryRegion with valid size. Well it isn't doing so, since check is called too late indirectly from aspeed_sdmc_reset()->asc->compute_conf() or much later when guest writes to configuration register. So depending on "-m" value QEMU end-ups with a warning and an invalid MemoryRegion size allocated and mapped. (examples: -M ast2500-evb -m 1M 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-00000000800fffff (prio 0, ram): ram 0000000080100000-00000000bfffffff (prio 0, i/o): max_ram -M ast2500-evb -m 3G 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-000000013fffffff (prio 0, ram): ram [DETECTED OVERFLOW!] 0000000140000000-00000000bfffffff (prio 0, i/o):= max_ram ) On top of that sdmc falls back and reports to guest "default" size, it thinks machine should have. For CLI side machine should honor whatever user configured or error out to make user fix CLI. This patch makes ram-size check actually work and changes behavior from a warning later on during machine reset to error_fatal at the moment SOC is realized so user will have to fix RAM size on CLI to start machine. It also gets out of the way mutable ram-size logic, so we could consolidate RAM allocation logic around pre-allocated hostmem backend (supplied by user or auto created by generic machine code depending on supplied -m/mem-path/mem-prealloc options. Signed-off-by: Igor Mammedov --- hw/arm/aspeed.c | 9 +-------- hw/misc/aspeed_sdmc.c | 5 +++++ 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index cc06af4..525c547 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -213,14 +213,7 @@ static void aspeed_machine_init(MachineState *machine) "hw-prot-key", &error_abort); } object_property_set_bool(OBJECT(&bmc->soc), true, "realized", - &error_abort); - - /* - * Allocate RAM after the memory controller has checked the size - * was valid. If not, a default value is used. - */ - ram_size =3D object_property_get_uint(OBJECT(&bmc->soc), "ram-size", - &error_abort); + &error_fatal); =20 memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size)= ; memory_region_add_subregion(&bmc->ram_container, 0, &bmc->ram); diff --git a/hw/misc/aspeed_sdmc.c b/hw/misc/aspeed_sdmc.c index 3fc80f0..b398e36 100644 --- a/hw/misc/aspeed_sdmc.c +++ b/hw/misc/aspeed_sdmc.c @@ -165,6 +165,11 @@ static void aspeed_sdmc_realize(DeviceState *dev, Erro= r **errp) AspeedSDMCState *s =3D ASPEED_SDMC(dev); AspeedSDMCClass *asc =3D ASPEED_SDMC_GET_CLASS(s); =20 + if (!g_hash_table_contains(asc->ram2feat, + GINT_TO_POINTER(s->ram_size >> 20))) { + error_setg(errp, "Invalid RAM size 0x%" PRIx64, s->ram_size); + return; + } s->max_ram_size =3D asc->max_ram_size; =20 memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_sdmc_ops, s, --=20 2.7.4