From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:56903) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SC6jR-0007ip-UW for qemu-devel@nongnu.org; Mon, 26 Mar 2012 06:01:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SC6jL-0000VF-Hl for qemu-devel@nongnu.org; Mon, 26 Mar 2012 06:00:57 -0400 Received: from [222.73.24.84] (port=27427 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SC6jL-0000Ut-6Q for qemu-devel@nongnu.org; Mon, 26 Mar 2012 06:00:51 -0400 Message-ID: <4F703ED4.7090100@cn.fujitsu.com> Date: Mon, 26 Mar 2012 18:03:00 +0800 From: Wen Congyang MIME-Version: 1.0 References: <4F703DD6.9050000@cn.fujitsu.com> In-Reply-To: <4F703DD6.9050000@cn.fujitsu.com> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Subject: [Qemu-devel] [PATCH 05/12 v11] Add API to get memory mapping List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel , Jan Kiszka , Dave Anderson , HATAYAMA Daisuke , Luiz Capitulino , Eric Blake , Anthony Liguori Add API to get all virtual address and physical address mapping. If the guest doesn't use paging, the virtual address is equal to the phyical address. The virtual address and physical address mapping is for gdb's user, and it does not include the memory that is not referenced by the page table. So if you want to use crash to anaylze the vmcore, please do not specify -p option. the reason why the -p option is not default explicitly: guest machine in a catastrophic state can have corrupted memory, which we cannot trust. Signed-off-by: Wen Congyang --- memory_mapping.c | 34 ++++++++++++++++++++++++++++++++++ memory_mapping.h | 15 +++++++++++++++ 2 files changed, 49 insertions(+), 0 deletions(-) diff --git a/memory_mapping.c b/memory_mapping.c index 718f271..b92e2f6 100644 --- a/memory_mapping.c +++ b/memory_mapping.c @@ -164,3 +164,37 @@ void memory_mapping_list_init(MemoryMappingList *list) list->last_mapping = NULL; QTAILQ_INIT(&list->head); } + +#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING) +int qemu_get_guest_memory_mapping(MemoryMappingList *list) +{ + CPUArchState *env; + RAMBlock *block; + ram_addr_t offset, length; + int ret; + bool paging_mode; + + paging_mode = cpu_paging_enabled(first_cpu); + if (paging_mode) { + for (env = first_cpu; env != NULL; env = env->next_cpu) { + ret = cpu_get_memory_mapping(list, env); + if (ret < 0) { + return -1; + } + } + return 0; + } + + /* + * If the guest doesn't use paging, the virtual address is equal to physical + * address. + */ + QLIST_FOREACH(block, &ram_list.blocks, next) { + offset = block->offset; + length = block->length; + create_new_memory_mapping(list, offset, offset, length); + } + + return 0; +} +#endif diff --git a/memory_mapping.h b/memory_mapping.h index 836b047..4d44641 100644 --- a/memory_mapping.h +++ b/memory_mapping.h @@ -44,4 +44,19 @@ void memory_mapping_list_free(MemoryMappingList *list); void memory_mapping_list_init(MemoryMappingList *list); +/* + * Return value: + * 0: success + * -1: failed + * -2: unsupported + */ +#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING) +int qemu_get_guest_memory_mapping(MemoryMappingList *list); +#else +static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list) +{ + return -2; +} +#endif + #endif -- 1.7.1