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Fri, 07 May 2021 12:28:53 +0000 Received: from userp3020.oracle.com (userp3020.oracle.com [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 147CSqAO014186; Fri, 7 May 2021 12:28:52 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3020.oracle.com with ESMTP id 38csrh1su6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 07 May 2021 12:28:52 +0000 Received: from abhmp0011.oracle.com (abhmp0011.oracle.com [141.146.116.17]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 147CSoxC016365; Fri, 7 May 2021 12:28:50 GMT Received: from ca-dev63.us.oracle.com (/10.211.8.221) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 07 May 2021 05:28:49 -0700 From: Steve Sistare To: qemu-devel@nongnu.org Subject: [PATCH V3 01/22] as_flat_walk Date: Fri, 7 May 2021 05:24:59 -0700 Message-Id: <1620390320-301716-2-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1620390320-301716-1-git-send-email-steven.sistare@oracle.com> References: <1620390320-301716-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-GUID: 4Ap3RWcocOSL9lU7LYBrZKcYeZFgslAd X-Proofpoint-ORIG-GUID: 4Ap3RWcocOSL9lU7LYBrZKcYeZFgslAd X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9976 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 adultscore=0 clxscore=1015 spamscore=0 mlxlogscore=999 priorityscore=1501 lowpriorityscore=0 phishscore=0 suspectscore=0 impostorscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105070085 Received-SPF: pass client-ip=156.151.31.86; envelope-from=steven.sistare@oracle.com; helo=userp2130.oracle.com X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=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" , 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 5728a68..2e5495a 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 d4493ef..75d7d17 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