qemu/qapi
Christian Borntraeger 4ada99ade2 s390x/cpu: expose the guest crash information
This patch is the s390 implementation of guest crash information,
similar to commit d187e08dc4 ("i386/cpu: add crash-information QOM
property") and the related commits. We will detect several crash
reasons, with the "disabled wait" being the most important one, since
this is used by all s390 guests as a "panic like" notification.

Demonstrate these ways with examples as follows.

  1. crash-information QOM property;

  Run qemu with -qmp unix:qmp-sock,server, then use utility "qmp-shell"
  to execute "qom-get" command, and might get the result like,

  (QEMU) (QEMU) qom-get path=/machine/unattached/device[0] \
      property=crash-information
  {"return": {"core": 0, "reason": "disabled-wait", "psw-mask": 562956395872256, \
      "type": "s390", "psw-addr": 1102832}}

  2. GUEST_PANICKED event reporting;

  Run qemu with a socket option, and telnet or nc to that,
  -chardev socket,id=qmp,port=4444,host=localhost,server \
  -mon chardev=qmp,mode=control,pretty=on \
  Negotiating the mode by { "execute": "qmp_capabilities" }, and the crash
  information will be reported on a guest crash event like,

  {
    "timestamp": {
        "seconds": 1518004739,
        "microseconds": 552563
    },
    "event": "GUEST_PANICKED",
    "data": {
        "action": "pause",
        "info": {
            "core": 0,
            "psw-addr": 1102832,
            "reason": "disabled-wait",
            "psw-mask": 562956395872256,
            "type": "s390"
        }
    }
  }

  3. log;

  Run qemu with the parameters: -D <logfile> -d guest_errors, to
  specify the logfile and log item. The results might be,

  Guest crashed on cpu 0: disabled-wait
  PSW: 0x0002000180000000 0x000000000010d3f0

Co-authored-by: Jing Liu <liujbjl@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20180209122543.25755-1-borntraeger@de.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[CH: tweaked qapi comment]
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-02-26 12:55:26 +01:00
..
Makefile.objs qapi: rename *qmp-*-visitor* to *qobject-*-visitor* 2016-10-25 16:25:48 +02:00
block-core.json qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
block.json qapi: add nbd-server-remove 2018-01-26 09:37:20 -06:00
char.json qapi-schema: Collect char device stuff in qapi/char.json 2017-09-04 13:09:12 +02:00
common.json qapi: Create DEFINE_PROP_OFF_AUTO_PCIBAR 2018-02-06 11:08:26 -07:00
crypto.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
introspect.json qapi-schema: Introspection doc is in the wrong section, fix 2017-09-04 13:09:12 +02:00
migration.json migration: improve documentation of postcopy-ram 2018-02-14 10:23:15 +00:00
net.json net: Allow hubports to connect to other netdevs 2018-01-29 16:05:37 +08:00
opts-visitor.c qapi: Fix QemuOpts visitor regression on unvisited input 2017-03-22 19:24:34 +01:00
qapi-clone-visitor.c qapi/qnull: Add own header 2017-11-17 18:21:30 +01:00
qapi-dealloc-visitor.c qdict qlist: Make most helper macros functions 2018-02-09 13:52:15 +01:00
qapi-util.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
qapi-visit-core.c Include qapi/qmp/qobject.h exactly where needed 2018-02-09 13:52:15 +01:00
qmp-dispatch.c Include qapi/qmp/qdict.h exactly where needed 2018-02-09 13:52:15 +01:00
qmp-event.c Include qapi/qmp/qdict.h exactly where needed 2018-02-09 13:52:15 +01:00
qmp-registry.c qapi: Support multiple command registries per program 2017-03-05 09:12:25 +01:00
qobject-input-visitor.c Include qapi/qmp/qstring.h exactly where needed 2018-02-09 13:52:15 +01:00
qobject-output-visitor.c Include qapi/qmp/qdict.h exactly where needed 2018-02-09 13:52:15 +01:00
rocker.json qapi: The #optional tag is redundant, drop 2017-03-16 07:13:02 +01:00
run-state.json s390x/cpu: expose the guest crash information 2018-02-26 12:55:26 +01:00
sockets.json qapi-schema: Collect sockets stuff in qapi/sockets.json 2017-09-04 13:09:12 +02:00
string-input-visitor.c qapi/qnull: Add own header 2017-11-17 18:21:30 +01:00
string-output-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
tpm.json tpm: add CRB device 2018-01-29 14:22:50 -05:00
trace-events qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
trace.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
transaction.json qapi-schema: Collect transaction stuff in qapi/transaction.json 2017-09-04 13:09:12 +02:00
ui.json vl: drop display_type variable 2018-02-20 12:12:05 +01:00