From nobody Tue Feb 10 14:33:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1606901965; cv=none; d=zohomail.com; s=zohoarc; b=kw0PUal3LrimeSLa6buOZoJ3MykUKKyYJkSunTKnCvx1LUomDa+WS+LBavcd6YFnXyeAn4GaVx/9/1queGyfhzAiw7cTOZUHeVBXfVFddhiSrig0ml0zmlySDM/kaAVuzBrV4RNo0uTyXyE6/Vahh8XfnruRYOgErvWwFjq7YKM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1606901965; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=QZm4OJGfL12VInI3zxmfcelS2XpydMDgLwNhdgfIDIA=; b=WdQ58MqIFP3g3lQQEwHt7GFyShKcfEk7CpUSxcRXsO3W0amsnUSAGFi9hImWp1CqxryqGhREwYSSdelQiGbLrx1b9LxrsDtJlJbP1FX5HnjWpFmL7RzJskmfLyqw7StHygOA/BoUIgAQ9SEtnlnH7o3MNR7zp9Y6A9EO+iYPgbc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1606901965573786.8934725198303; Wed, 2 Dec 2020 01:39:25 -0800 (PST) Received: from localhost ([::1]:43076 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kkObc-0004lg-Gw for importer@patchew.org; Wed, 02 Dec 2020 04:39:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42740) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kkNMG-0006df-GB for qemu-devel@nongnu.org; Wed, 02 Dec 2020 03:19:28 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:53001) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kkNM1-0006wt-Tn for qemu-devel@nongnu.org; Wed, 02 Dec 2020 03:19:27 -0500 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-300-6b1wv4wJOhiIdkFgffXb6A-1; Wed, 02 Dec 2020 03:19:07 -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 4C4BE8558F0 for ; Wed, 2 Dec 2020 08:19:06 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id D974F5D9C6; Wed, 2 Dec 2020 08:19:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1606897148; 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=QZm4OJGfL12VInI3zxmfcelS2XpydMDgLwNhdgfIDIA=; b=h3OAaMU+7pBYJB5icUpkj5NkRLlcNA2FEXvmjKwhmtWepHVJl+sdOLkh9QRwzGtJf2Fvda YRIwb/GDelLhy+mTwDZAMOAYHPNt9S8tqQlBgb4cp9WNgcSRm4yoqfqROnY8hcyg1KueOr 5cYYeAf+6hzUg1Kn9EiQKSWg8MTIYMg= X-MC-Unique: 6b1wv4wJOhiIdkFgffXb6A-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 13/15] memory: allow creating MemoryRegions before accelerators Date: Wed, 2 Dec 2020 03:18:52 -0500 Message-Id: <20201202081854.4126071-14-pbonzini@redhat.com> In-Reply-To: <20201202081854.4126071-1-pbonzini@redhat.com> References: <20201202081854.4126071-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.497, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: imammedo@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" Compute the DIRTY_MEMORY_CODE bit in memory_region_get_dirty_log_mask instead of memory_region_init_*. This makes it possible to allocate memory backend objects at any time. Signed-off-by: Paolo Bonzini Reviewed-by: Igor Mammedov --- softmmu/memory.c | 12 ++++++------ softmmu/vl.c | 6 +----- 2 files changed, 7 insertions(+), 11 deletions(-) diff --git a/softmmu/memory.c b/softmmu/memory.c index 11ca94d037..89a4723fe5 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1548,7 +1548,6 @@ void memory_region_init_ram_shared_nomigrate(MemoryRe= gion *mr, mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; mr->ram_block =3D qemu_ram_alloc(size, share, mr, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1573,7 +1572,6 @@ void memory_region_init_resizeable_ram(MemoryRegion *= mr, mr->destructor =3D memory_region_destructor_ram; mr->ram_block =3D qemu_ram_alloc_resizeable(size, max_size, resized, mr, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1598,7 +1596,6 @@ void memory_region_init_ram_from_file(MemoryRegion *m= r, mr->destructor =3D memory_region_destructor_ram; mr->align =3D align; mr->ram_block =3D qemu_ram_alloc_from_file(size, mr, ram_flags, path, = &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1622,7 +1619,6 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr, mr->ram_block =3D qemu_ram_alloc_from_fd(size, mr, share ? RAM_SHARED : 0, fd, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1641,7 +1637,6 @@ void memory_region_init_ram_ptr(MemoryRegion *mr, mr->ram =3D true; mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; =20 /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); @@ -1661,7 +1656,7 @@ void memory_region_init_ram_device_ptr(MemoryRegion *= mr, mr->ops =3D &ram_device_mem_ops; mr->opaque =3D mr; mr->destructor =3D memory_region_destructor_ram; - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; + /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal); @@ -1819,6 +1814,11 @@ uint8_t memory_region_get_dirty_log_mask(MemoryRegio= n *mr) memory_region_is_iommu(mr))) { mask |=3D (1 << DIRTY_MEMORY_MIGRATION); } + + if (tcg_enabled() && rb) { + /* TCG only cares about dirty memory logging for RAM, not IOMMU. = */ + mask |=3D (1 << DIRTY_MEMORY_CODE); + } return mask; } =20 diff --git a/softmmu/vl.c b/softmmu/vl.c index 0f63d80472..023c16245b 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -1715,11 +1715,7 @@ static bool object_create_early(const char *type, Qe= muOpts *opts) return false; } =20 - /* Memory allocation by backends needs to be done - * after configure_accelerator() (due to the tcg_enabled() - * checks at memory_region_init_*()). - * - * Also, allocation of large amounts of memory may delay + /* Allocation of large amounts of memory may delay * chardev initialization for too long, and trigger timeouts * on software that waits for a monitor socket to be created * (e.g. libvirt). --=20 2.26.2