From patchwork Tue Jul 26 16:10:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Steven Sistare X-Patchwork-Id: 1660856 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=oracle.com header.i=@oracle.com header.a=rsa-sha256 header.s=corp-2022-7-12 header.b=QokN1Oh3; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4LshxF5r5Lz9sFw for ; Wed, 27 Jul 2022 02:21:21 +1000 (AEST) Received: from localhost ([::1]:60374 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oGNJ9-0005sZ-Gu for incoming@patchwork.ozlabs.org; Tue, 26 Jul 2022 12:21:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34844) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGN9d-0002am-GS for qemu-devel@nongnu.org; Tue, 26 Jul 2022 12:11:29 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:33860) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGN9Z-00069E-HM for qemu-devel@nongnu.org; Tue, 26 Jul 2022 12:11:29 -0400 Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 26QFn3av031727; Tue, 26 Jul 2022 16:11:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2022-7-12; bh=MbfnnC1qY1LDXF+ob6lpIOUBkz0IM61m41VFAnUlMC0=; b=QokN1Oh3gF0XYbe2GB65orTgViG8mmmGh7aKCuOF0aIhaQwKbggq5Xd/hl5W/z54gSgM UAQY8wJe8eVxUwY4Qwpd7qZcko/7Sr6ZKdkYh1IIC0t00MD2hyOWtCEhnvLhCJK1929Y QrQT2k3hlOhOV3FLsjJ+6RUwpz/9Yef5jMHoeZA5s/+pZzmr0Qo0X7MTGkXieja2fjFN 9RK4mV6ZiZHIwWeQP4Tz8v95I4pvf4LDY7hPcRKiiKIu6pq7HkvzKp5Hsqb1/qgKdliu AhsaIWZLe66lxA1rmIow6HjfnHQ5oBlnwMq9uSdHoE1YUvVc4YP7cqRH2jGvCudd8kPK FA== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3hg9a4q1ab-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Jul 2022 16:11:12 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.5/8.17.1.5) with ESMTP id 26QFl763006339; Tue, 26 Jul 2022 16:11:11 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3hh65bq1uu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Jul 2022 16:11:11 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 26QG5uSj023334; Tue, 26 Jul 2022 16:11:11 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3hh65bq0y5-19; Tue, 26 Jul 2022 16:11:10 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Alex_Benn=C3=A9e?= , "Dr. David Alan Gilbert" , "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , "Daniel P. Berrange" , Juan Quintela , Markus Armbruster , Eric Blake , Jason Zeng , Zheng Chuan , Steve Sistare , Mark Kanda , Guoyi Tu , Peter Maydell , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Igor Mammedov , David Hildenbrand , John Snow , Peng Liang Subject: [PATCH V9 18/46] memory: flat section iterator Date: Tue, 26 Jul 2022 09:10:15 -0700 Message-Id: <1658851843-236870-19-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> References: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-26_04,2022-07-26_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 phishscore=0 spamscore=0 mlxlogscore=999 suspectscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207260063 X-Proofpoint-ORIG-GUID: 1vBJwC0V0P1Avf41pfJSTUByE3yZofYh X-Proofpoint-GUID: 1vBJwC0V0P1Avf41pfJSTUByE3yZofYh Received-SPF: pass client-ip=205.220.177.32; envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add an iterator over the sections of a flattened address space. Signed-off-by: Steve Sistare Reviewed-by: Marc-André Lureau --- include/exec/memory.h | 31 +++++++++++++++++++++++++++++++ softmmu/memory.c | 21 +++++++++++++++++++++ 2 files changed, 52 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 7513d04..9629289 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2346,6 +2346,37 @@ void memory_region_set_ram_discard_manager(MemoryRegion *mr, RamDiscardManager *rdm); /** + * memory_region_section_cb: callback for address_space_flat_for_each_section() + * + * @mrs: MemoryRegionSection of the range + * @opaque: data pointer passed to address_space_flat_for_each_section() + * @errp: error message, returned to the address_space_flat_for_each_section + * caller. + * + * Returns: non-zero to stop the iteration, and 0 to continue. The same + * non-zero value is returned to the address_space_flat_for_each_section caller. + */ + +typedef int (*memory_region_section_cb)(MemoryRegionSection *mrs, + void *opaque, + Error **errp); + +/** + * address_space_flat_for_each_section: walk the ranges in the address space + * flat view and call @func for each. Return 0 on success, else return non-zero + * with a message in @errp. + * + * @as: target address space + * @func: callback function + * @opaque: passed to @func + * @errp: passed to @func + */ +int address_space_flat_for_each_section(AddressSpace *as, + memory_region_section_cb func, + void *opaque, + Error **errp); + +/** * memory_region_find: translate an address/size relative to a * MemoryRegion into a #MemoryRegionSection. * diff --git a/softmmu/memory.c b/softmmu/memory.c index 7ba2048..6aa3a2f 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -2683,6 +2683,27 @@ bool memory_region_is_mapped(MemoryRegion *mr) return !!mr->container || mr->mapped_via_alias; } +int address_space_flat_for_each_section(AddressSpace *as, + memory_region_section_cb func, + void *opaque, + Error **errp) +{ + FlatView *view = address_space_get_flatview(as); + FlatRange *fr; + int ret; + + FOR_EACH_FLAT_RANGE(fr, view) { + MemoryRegionSection mrs = section_from_flat_range(fr, view); + ret = func(&mrs, opaque, errp); + if (ret) { + return ret; + } + } + + flatview_unref(view); + return 0; +} + /* Same as memory_region_find, but it does not add a reference to the * returned region. It must be called from an RCU critical section. */