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783e9b4826
The command's usage:
dump-guest-memory [-p] protocol [begin] [length]
The supported protocol can be file or fd:
1. file: the protocol starts with "file:", and the following string is
the file's path.
2. fd: the protocol starts with "fd:", and the following string is the
fd's name.
Note:
1. If you want to use gdb to process the core, please specify -p option.
The reason why the -p option is not default is:
a. guest machine in a catastrophic state can have corrupted memory,
which we cannot trust.
b. The guest machine can be in read-mode even if paging is enabled.
For example: the guest machine uses ACPI to sleep, and ACPI sleep
state goes in real-mode.
2. If you don't want to dump all guest's memory, please specify the start
physical address and the length.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
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* QEMU memory mapping
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*
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* Copyright Fujitsu, Corp. 2011, 2012
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*
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* Authors:
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* Wen Congyang <wency@cn.fujitsu.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef MEMORY_MAPPING_H
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#define MEMORY_MAPPING_H
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#include "qemu-queue.h"
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#ifndef CONFIG_USER_ONLY
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/* The physical and virtual address in the memory mapping are contiguous. */
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typedef struct MemoryMapping {
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target_phys_addr_t phys_addr;
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target_ulong virt_addr;
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ram_addr_t length;
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QTAILQ_ENTRY(MemoryMapping) next;
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} MemoryMapping;
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typedef struct MemoryMappingList {
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unsigned int num;
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MemoryMapping *last_mapping;
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QTAILQ_HEAD(, MemoryMapping) head;
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} MemoryMappingList;
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/*
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* add or merge the memory region [phys_addr, phys_addr + length) into the
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* memory mapping's list. The region's virtual address starts with virt_addr,
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* and is contiguous. The list is sorted by phys_addr.
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*/
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void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
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target_phys_addr_t phys_addr,
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target_phys_addr_t virt_addr,
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ram_addr_t length);
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void memory_mapping_list_free(MemoryMappingList *list);
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void memory_mapping_list_init(MemoryMappingList *list);
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/*
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* Return value:
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* 0: success
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* -1: failed
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* -2: unsupported
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*/
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#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING)
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int qemu_get_guest_memory_mapping(MemoryMappingList *list);
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#else
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static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list)
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{
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return -2;
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}
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#endif
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/* get guest's memory mapping without do paging(virtual address is 0). */
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void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
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void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
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int64_t length);
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#else
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/* We use MemoryMappingList* in cpu-all.h */
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typedef struct MemoryMappingList MemoryMappingList;
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#endif
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#endif
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