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authorWen Congyang <wency@cn.fujitsu.com>2012-05-07 12:10:47 +0800
committerLuiz Capitulino <lcapitulino@redhat.com>2012-06-04 13:49:34 -0300
commit783e9b4826b95e53e33c42db6b4bd7d89bdff147 (patch)
treecf82afb895f2289e30b926b3801e925cb90cd32b /hmp.c
parent68f4730c714b7c30ca912d7c03e199f181739da0 (diff)
introduce a new monitor command 'dump-guest-memory' to dump guest's memory
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>
Diffstat (limited to 'hmp.c')
-rw-r--r--hmp.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/hmp.c b/hmp.c
index bb0952e00b..42ced2a202 100644
--- a/hmp.c
+++ b/hmp.c
@@ -947,3 +947,25 @@ void hmp_device_del(Monitor *mon, const QDict *qdict)
qmp_device_del(id, &err);
hmp_handle_error(mon, &err);
}
+
+void hmp_dump_guest_memory(Monitor *mon, const QDict *qdict)
+{
+ Error *errp = NULL;
+ int paging = qdict_get_try_bool(qdict, "paging", 0);
+ const char *file = qdict_get_str(qdict, "protocol");
+ bool has_begin = qdict_haskey(qdict, "begin");
+ bool has_length = qdict_haskey(qdict, "length");
+ int64_t begin = 0;
+ int64_t length = 0;
+
+ if (has_begin) {
+ begin = qdict_get_int(qdict, "begin");
+ }
+ if (has_length) {
+ length = qdict_get_int(qdict, "length");
+ }
+
+ qmp_dump_guest_memory(paging, file, has_begin, begin, has_length, length,
+ &errp);
+ hmp_handle_error(mon, &errp);
+}