From patchwork Tue May 30 11:38:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13259789 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2955AC7EE23 for ; Tue, 30 May 2023 11:41:23 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q3xhF-00083v-Mw; Tue, 30 May 2023 07:39:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q3xh8-0007vo-4C for qemu-devel@nongnu.org; Tue, 30 May 2023 07:39:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q3xh6-00048i-Kb for qemu-devel@nongnu.org; Tue, 30 May 2023 07:39:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1685446754; 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=ypSNjxk8rJUKShrG/cQHxTCZ8bHXJz6ssKLCoH3afkk=; b=MZeh1QPv1h1rGMLy/ajpIRwgQT/HHCFz6LgjGQLFW0EVOSph3XZrzCrz+Rj1Q3sFSQ/MXQ eJpGGrJKP1zULuOxhVha81zBkvN7q1+a51FfzkajPLQW9hRlAmyD5h7/lEUPwG1tnJmhRo V0ritnckNSnE42EcvPcLIFjmFkxTXOw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-402-4IePjxoQObOgdcDZpBNbfA-1; Tue, 30 May 2023 07:39:08 -0400 X-MC-Unique: 4IePjxoQObOgdcDZpBNbfA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D7BB9101A53A; Tue, 30 May 2023 11:39:07 +0000 (UTC) Received: from t480s.redhat.com (unknown [10.39.194.167]) by smtp.corp.redhat.com (Postfix) with ESMTP id D195040CFD48; Tue, 30 May 2023 11:39:04 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-ppc@nongnu.org, Igor Mammedov , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Xiao Guangrong , David Hildenbrand , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Daniel Henrique Barboza , David Gibson , Eduardo Habkost , Greg Kurz , Harsh Prateek Bora , Marcel Apfelbaum , "Michael S. Tsirkin" , Paolo Bonzini , Peter Maydell , Richard Henderson , Song Gao , Xiaojuan Yang Subject: [PATCH 06/10] hw/i386/pc: Use memory_devices_init() Date: Tue, 30 May 2023 13:38:34 +0200 Message-Id: <20230530113838.257755-7-david@redhat.com> In-Reply-To: <20230530113838.257755-1-david@redhat.com> References: <20230530113838.257755-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.133.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.167, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org Let's use our new helper and stop always allocating ms->device_memory. Once allcoated, we're sure that the size > 0 and that the base was initialized. Adjust the code in pc_memory_init() to check for machine->device_memory instead of pcmc->has_reserved_memory and machine->device_memory->base. Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Cc: "Michael S. Tsirkin" Cc: Marcel Apfelbaum Signed-off-by: David Hildenbrand Reviewed-by: Philippe Mathieu-Daudé --- hw/i386/pc.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index bb62c994fa..920aa32b53 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1039,13 +1039,11 @@ void pc_memory_init(PCMachineState *pcms, exit(EXIT_FAILURE); } - /* always allocate the device memory information */ - machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); - /* initialize device memory address space */ if (pcmc->has_reserved_memory && (machine->ram_size < machine->maxram_size)) { ram_addr_t device_mem_size; + hwaddr device_mem_base; if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { error_report("unsupported amount of memory slots: %"PRIu64, @@ -1060,19 +1058,14 @@ void pc_memory_init(PCMachineState *pcms, exit(EXIT_FAILURE); } - pc_get_device_memory_range(pcms, &machine->device_memory->base, &device_mem_size); + pc_get_device_memory_range(pcms, &device_mem_base, &device_mem_size); - if ((machine->device_memory->base + device_mem_size) < - device_mem_size) { + if (device_mem_base + device_mem_size < device_mem_size) { error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT, machine->maxram_size); exit(EXIT_FAILURE); } - - memory_region_init(&machine->device_memory->mr, OBJECT(pcms), - "device-memory", device_mem_size); - memory_region_add_subregion(system_memory, machine->device_memory->base, - &machine->device_memory->mr); + memory_devices_init(machine, device_mem_base, device_mem_size); } if (pcms->cxl_devices_state.is_enabled) { @@ -1120,7 +1113,7 @@ void pc_memory_init(PCMachineState *pcms, rom_set_fw(fw_cfg); - if (pcmc->has_reserved_memory && machine->device_memory->base) { + if (machine->device_memory) { uint64_t *val = g_malloc(sizeof(*val)); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); uint64_t res_mem_end = machine->device_memory->base;