From nobody Mon Feb 9 18:00:08 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=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1655305041; cv=none; d=zohomail.com; s=zohoarc; b=Dv17GJrpHIdepywffFN2icmby71XU0i3Bfcix31kgKq1s7eE+Pm4nvKldHTDPlxAHV5+/CkrUeB54uPQM9x2zBrguQ1DN5CbFqWy5qxFv+P4bdhQijBLECWXEtTKpOpYVrydR5Hw6cjVcDOGUOClsxV5d/E5dORZ7anXMQrm+i8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1655305041; 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=aFdA3TZzMye7P/K0tucfHBThD91+DafoYxmtCnmqvOo=; b=L5lVKwIB8YdDW82KCUms9O4NadBjA4Is21ktDWTcuQL0pfz1meLV+/KKf7lGq+4Vm/34bVxI4xeuDvoIAUEl133NolcmUw6jVca2wy+v9AK8ngf5B3KbVfTIH1uo/GaF9zZIcy/io1WV2tRnLJvwICRPLiManNvM8cAguELDUI4= 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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1655305041697809.5372719660544; Wed, 15 Jun 2022 07:57:21 -0700 (PDT) Received: from localhost ([::1]:36102 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o1USO-0006I2-Bm for importer@patchew.org; Wed, 15 Jun 2022 10:57:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47348) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o1UOB-0006Kr-El for qemu-devel@nongnu.org; Wed, 15 Jun 2022 10:52:59 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:15186) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o1UO9-000117-Km for qemu-devel@nongnu.org; Wed, 15 Jun 2022 10:52:59 -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 25FDsU6d025877; Wed, 15 Jun 2022 14:52:44 GMT Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3gmhu2rxe3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Jun 2022 14:52:44 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.16.1.2/8.16.1.2) with SMTP id 25FEQ79o023097; Wed, 15 Jun 2022 14:52:43 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com with ESMTP id 3gpr25vpnw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Jun 2022 14:52:43 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 25FEqSN7018501; Wed, 15 Jun 2022 14:52:42 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com with ESMTP id 3gpr25vpfm-13; Wed, 15 Jun 2022 14:52:42 +0000 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-2021-07-09; bh=aFdA3TZzMye7P/K0tucfHBThD91+DafoYxmtCnmqvOo=; b=kdDmWRe/nrEjJZIyQWfQZ9O+CzADDY+mrjIIm/N66DrBsyEp8P+teo6H4evVoGGzfed6 NoDmrQIOvGAw9mYi94OTi6V1IPN2Q1rBUecfAAkLroK4YbaeN075dsGXZwg6nkEnJO+1 9nrIxJrnTnrCm4zZRdsmMj27WOTh0HP0wyyiaZme070+NQuBoOvZ6xujXIPpSYvjhMBZ p+epvh/+Qf0Lwt4vR9qXiLwPBouOThz4oK/IU+AExMjAgr+Nqz9Eo0RxL0c4ozkcIFbo SMipkzCGkzPb3Eglo/g/XlbBqXxVnVwvtETP95GrTKoGJLhRk0qYMKJBvk6gzbP4WYXw hQ== From: Steve Sistare To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Alex=20Benn=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=20Mathieu-Daud=C3=A9?= , Igor Mammedov , David Hildenbrand , John Snow Subject: [PATCH V8 12/39] memory: flat section iterator Date: Wed, 15 Jun 2022 07:51:59 -0700 Message-Id: <1655304746-102776-13-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1655304746-102776-1-git-send-email-steven.sistare@oracle.com> References: <1655304746-102776-1-git-send-email-steven.sistare@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: jsmPdR8G6BVs0DHEOuv7IlnhL7bw4p-V X-Proofpoint-ORIG-GUID: jsmPdR8G6BVs0DHEOuv7IlnhL7bw4p-V 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=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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1655305043093100001 Add an iterator over the sections of a flattened address space. Signed-off-by: Steve Sistare Reviewed-by: Marc-Andr=C3=A9 Lureau --- include/exec/memory.h | 31 +++++++++++++++++++++++++++++++ softmmu/memory.c | 20 ++++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index a03301d..6a257a4 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2343,6 +2343,37 @@ void memory_region_set_ram_discard_manager(MemoryReg= ion *mr, RamDiscardManager *rdm); =20 /** + * memory_region_section_cb: callback for address_space_flat_for_each_sect= ion() + * + * @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_secti= on + * 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 c= aller. + */ + +typedef int (*memory_region_section_cb)(MemoryRegionSection *mrs, + void *opaque, + Error **errp); + +/** + * address_space_flat_for_each_section: walk the ranges in the address spa= ce + * flat view and call @func for each. Return 0 on success, else return no= n-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 0fe6fac..e5aefdd 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -2683,6 +2683,26 @@ bool memory_region_is_mapped(MemoryRegion *mr) return !!mr->container || mr->mapped_via_alias; } =20 +int address_space_flat_for_each_section(AddressSpace *as, + memory_region_section_cb func, + void *opaque, + Error **errp) +{ + FlatView *view =3D address_space_get_flatview(as); + FlatRange *fr; + int ret; + + FOR_EACH_FLAT_RANGE(fr, view) { + MemoryRegionSection mrs =3D section_from_flat_range(fr, view); + ret =3D func(&mrs, opaque, errp); + if (ret) { + return ret; + } + } + + 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. */ --=20 1.8.3.1