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Tue, 6 Jul 2021 16:52:46 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Subject: [PATCH V4 05/25] as_flat_walk Date: Tue, 6 Jul 2021 09:45:36 -0700 Message-Id: <1625589956-81651-6-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1625589956-81651-1-git-send-email-steven.sistare@oracle.com> References: <1625589956-81651-1-git-send-email-steven.sistare@oracle.com> Content-Type: text/plain X-ClientProxiedBy: SN4PR0201CA0041.namprd02.prod.outlook.com (2603:10b6:803:2e::27) To BYAPR10MB3240.namprd10.prod.outlook.com (2603:10b6:a03:155::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ca-dev63.us.oracle.com (148.87.23.4) by SN4PR0201CA0041.namprd02.prod.outlook.com (2603:10b6:803:2e::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.19 via Frontend Transport; Tue, 6 Jul 2021 16:52:44 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 6cabf162-77ef-4914-4256-08d9409e7ab1 X-MS-TrafficTypeDiagnostic: BYAPR10MB2982: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; 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envelope-from=steven.sistare@oracle.com; helo=mx0a-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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Daniel P. Berrange" , "Michael S. Tsirkin" , Jason Zeng , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Juan Quintela , "Dr. David Alan Gilbert" , Eric Blake , Markus Armbruster , Alex Williamson , Steve Sistare , Stefan Hajnoczi , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add an iterator over the sections of a flattened address space. Signed-off-by: Steve Sistare --- include/exec/memory.h | 17 +++++++++++++++++ softmmu/memory.c | 18 ++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index e8b71d8..d87c059 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2003,6 +2003,23 @@ bool memory_region_present(MemoryRegion *container, hwaddr addr); */ bool memory_region_is_mapped(MemoryRegion *mr); +typedef int (*qemu_flat_walk_cb)(MemoryRegionSection *s, + void *handle, + Error **errp); + +/** + * as_flat_walk: 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 + * @handle: passed to @func + * @errp: passed to @func + */ +int as_flat_walk(AddressSpace *as, qemu_flat_walk_cb func, + void *handle, 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 7197559..b2d5092 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -2570,6 +2570,24 @@ bool memory_region_is_mapped(MemoryRegion *mr) return mr->container ? true : false; } +int as_flat_walk(AddressSpace *as, qemu_flat_walk_cb func, + void *handle, Error **errp) +{ + FlatView *view = address_space_get_flatview(as); + FlatRange *fr; + int ret; + + FOR_EACH_FLAT_RANGE(fr, view) { + MemoryRegionSection section = section_from_flat_range(fr, view); + ret = func(§ion, handle, 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. */ -- 1.8.3.1