From patchwork Wed Apr 18 12:54:18 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 153498 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 7674AB6FDB for ; Wed, 18 Apr 2012 22:51:31 +1000 (EST) Received: from localhost ([::1]:33295 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKUM3-0005tV-MD for incoming@patchwork.ozlabs.org; Wed, 18 Apr 2012 08:51:27 -0400 Received: from eggs.gnu.org ([208.118.235.92]:41641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKULt-0005ss-H7 for qemu-devel@nongnu.org; Wed, 18 Apr 2012 08:51:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SKULm-0005p3-88 for qemu-devel@nongnu.org; Wed, 18 Apr 2012 08:51:17 -0400 Received: from [222.73.24.84] (port=9077 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKULl-0005oN-NK for qemu-devel@nongnu.org; Wed, 18 Apr 2012 08:51:10 -0400 X-IronPort-AV: E=Sophos;i="4.75,441,1330876800"; d="scan'208";a="4783514" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 18 Apr 2012 20:50:46 +0800 Received: from mailserver.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q3ICp6ac020646; Wed, 18 Apr 2012 20:51:06 +0800 Received: from [10.167.225.226] ([10.167.225.226]) by mailserver.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012041820501216-62296 ; Wed, 18 Apr 2012 20:50:12 +0800 Message-ID: <4F8EB97A.9010208@cn.fujitsu.com> Date: Wed, 18 Apr 2012 20:54:18 +0800 From: Wen Congyang User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: qemu-devel , HATAYAMA Daisuke , Luiz Capitulino , "Daniel P. Berrange" References: <4F8EB840.90108@cn.fujitsu.com> In-Reply-To: <4F8EB840.90108@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/18 20:50:12, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/18 20:50:12, Serialize complete at 2012/04/18 20:50:12 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Subject: [Qemu-devel] [PATCH 06/12 v13] Add API to get memory mapping without do paging X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 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-bounces+incoming=patchwork.ozlabs.org@nongnu.org crash does not need the virtual address and physical address mapping, and the mapping does not include the memory that is not referenced by the page table. crash does not use the virtual address, so we can create the mapping for all physical memory(virtual address is always 0). This patch provides a API to do this thing, and it will be used in the following patch. Signed-off-by: Wen Congyang --- memory_mapping.c | 9 +++++++++ memory_mapping.h | 3 +++ 2 files changed, 12 insertions(+), 0 deletions(-) diff --git a/memory_mapping.c b/memory_mapping.c index 627397a..adb1595 100644 --- a/memory_mapping.c +++ b/memory_mapping.c @@ -211,3 +211,12 @@ int qemu_get_guest_memory_mapping(MemoryMappingList *list) return 0; } #endif + +void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list) +{ + RAMBlock *block; + + QLIST_FOREACH(block, &ram_list.blocks, next) { + create_new_memory_mapping(list, block->offset, 0, block->length); + } +} diff --git a/memory_mapping.h b/memory_mapping.h index 4d44641..a583e44 100644 --- a/memory_mapping.h +++ b/memory_mapping.h @@ -59,4 +59,7 @@ static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list) } #endif +/* get guest's memory mapping without do paging(virtual address is 0). */ +void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list); + #endif