From nobody Mon Feb 9 07:22:44 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1643048031; cv=none; d=zohomail.com; s=zohoarc; b=BTDGlUC/5LI2eHpxhNUD3VUgozy06sRFcM45Sj06e7Q+ziauWLyDHw6e2J/w6gvL/N2mlM9BOvobUD1LiURzMUKhBMsdiAfIR8Zu5LNXSBB/qoV7VQoO7+Jh+eZ/O1IJTq/0+2r3XHnxFzM341XohBoGHTMGXDuedLKTH0SSq4A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1643048031; 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:Reply-To:References:Sender:Subject:To; bh=8+Gro09mRVzqNtsSPaLjljsHOZKqS2zrujLJ8TYfrQU=; b=MK+sJS8zmPCerijHUb3zn9r0yzpNATiNVtRNEwstybHhHBSkPdkjipnCzsizN524OcyxhV3XpJ0ddJqNjhoamOrqzOmFK0IAhiSE1pZJWYLYkZBQgxj5xo8gOlxGzDu2GKBnNk4J3nTLGYGqK80pii5XNOCbZ2CF4lm6tau66qI= ARC-Authentication-Results: i=1; mx.zohomail.com; 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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1643048031650500.1620856351118; Mon, 24 Jan 2022 10:13:51 -0800 (PST) Received: from localhost ([::1]:53946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nC3qg-0003mJ-Ud for importer@patchew.org; Mon, 24 Jan 2022 13:13:50 -0500 Received: from eggs.gnu.org ([209.51.188.92]:59870) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3Gn-0005HX-3M for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:36:45 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2206) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3Gj-0002MD-5l for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:36:44 -0500 Received: from fraeml740-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4JjHBX5Rcgz67vYh; Tue, 25 Jan 2022 01:33:08 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml740-chm.china.huawei.com (10.206.15.221) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 24 Jan 2022 18:36:31 +0100 Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 24 Jan 2022 17:36:30 +0000 To: , Marcel Apfelbaum , "Michael S . Tsirkin" , Igor Mammedov CC: , Ben Widawsky , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Peter Maydell , , Shameerali Kolothum Thodi , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Saransh Gupta1 , Shreyas Shah , Chris Browy , Samarth Saxena , "Dan Williams" Subject: [PATCH v4 38/42] RFC: softmmu/memory: Add ops to memory_region_ram_init_from_file Date: Mon, 24 Jan 2022 17:17:01 +0000 Message-ID: <20220124171705.10432-39-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> References: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhreml740-chm.china.huawei.com (10.201.108.190) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected 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=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Reply-to: Jonathan Cameron From: Jonathan Cameron via X-ZM-MESSAGEID: 1643048033978100001 Content-Type: text/plain; charset="utf-8" From: Jonathan Cameron Inorder to implement memory interleaving we need a means to proxy the calls. Adding mem_ops allows such proxying. Note should have no impact on use cases not using _dispatch_read/write. For now, only file backed hostmem is considered to seek feedback on the approach before considering other hostmem backends. Signed-off-by: Jonathan Cameron --- softmmu/memory.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/softmmu/memory.c b/softmmu/memory.c index 678dc62f06..d537091c63 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1606,6 +1606,15 @@ void memory_region_init_ram_from_file(MemoryRegion *= mr, Error *err =3D NULL; memory_region_init(mr, owner, name, size); mr->ram =3D true; + + /* + * ops used only when directly accessing via + * - memory_region_dispatch_read() + * - memory_region_dispatch_write() + */ + mr->ops =3D &ram_device_mem_ops; + mr->opaque =3D mr; + mr->readonly =3D readonly; mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; --=20 2.32.0