From patchwork Mon May 7 04:07:07 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 157215 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 0F8E2B6FA7 for ; Mon, 7 May 2012 14:04:08 +1000 (EST) Received: from localhost ([::1]:48952 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SRFB7-0001JE-Uy for incoming@patchwork.ozlabs.org; Mon, 07 May 2012 00:04:05 -0400 Received: from eggs.gnu.org ([208.118.235.92]:40310) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SRFB0-0001Iy-O4 for qemu-devel@nongnu.org; Mon, 07 May 2012 00:04:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SRFAy-0008El-VF for qemu-devel@nongnu.org; Mon, 07 May 2012 00:03:58 -0400 Received: from [222.73.24.84] (port=49228 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SRFAy-0008Aq-JI for qemu-devel@nongnu.org; Mon, 07 May 2012 00:03:56 -0400 X-IronPort-AV: E=Sophos;i="4.75,540,1330876800"; d="scan'208";a="4897148" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 07 May 2012 12:03:27 +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 q4743pUa015500; Mon, 7 May 2012 12:03:52 +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 2012050712030686-298480 ; Mon, 7 May 2012 12:03:06 +0800 Message-ID: <4FA74A6B.3080607@cn.fujitsu.com> Date: Mon, 07 May 2012 12:07:07 +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" , Anthony Liguori References: <4FA74927.5070905@cn.fujitsu.com> In-Reply-To: <4FA74927.5070905@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/05/07 12:03:06, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/05/07 12:03:09, Serialize complete at 2012/05/07 12:03:09 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 v15] 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 7f3c256..190de12 100644 --- a/memory_mapping.h +++ b/memory_mapping.h @@ -60,6 +60,9 @@ 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); + #else /* We use MemoryMappingList* in cpu-all.h */