Re: [libvirt] [PATCH libvirt] qemu: log the crash information for S390

Since QEMU 2.12 guest crash information for S390 is available in the QEMU monitor, e.g.: { "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" } } } Let's log this information into the domain log file, e.g.: 2018-02-08 13:11:26.075+0000: panic s390: core='0' psw-mask='0x0002000180000000' psw-addr='0x000000000010f146' reason='disabled-wait' Reviewed-by: Boris Fiuczynski <fiuczy(a)linux.vnet.ibm.com&gt; Signed-off-by: Bjoern Walk <bwalk(a)linux.vnet.ibm.com&gt; --- src/qemu/qemu_monitor.c | 19 ++++++++++++++++++- src/qemu/qemu_monitor.h | 12 ++++++++++++ src/qemu/qemu_monitor_json.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index 9b5ad72c..8c394583 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -4363,7 +4363,14 @@ qemuMonitorGuestPanicEventInfoFormatMsg(qemuMonitorEventPanicInfoPtr info) info->data.hyperv.arg3, info->data.hyperv.arg4, info->data.hyperv.arg5)); break; - + case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_S390: + ignore_value(virAsprintf(&ret, "s390: core='%d' psw-mask='0x%016llx' " + "psw-addr='0x%016llx' reason='%s'", + info->data.s390.core, + info->data.s390.psw_mask, + info->data.s390.psw_addr, + info->data.s390.reason)); + break; case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_NONE: case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_LAST: break; @@ -4379,6 +4386,16 @@ qemuMonitorEventPanicInfoFree(qemuMonitorEventPanicInfoPtr info) if (!info) return; + switch (info->type) { + case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_S390: + VIR_FREE(info->data.s390.reason); + break; + case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_NONE: + case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_HYPERV: + case QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_LAST: + break; + } + VIR_FREE(info); } diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index ea0c01ae..4b3a5e21 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -73,6 +73,7 @@ struct _qemuMonitorMessage { typedef enum { QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_NONE = 0, QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_HYPERV, + QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_S390, QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_LAST } qemuMonitorEventPanicInfoType; @@ -88,12 +89,23 @@ struct _qemuMonitorEventPanicInfoHyperv { unsigned long long arg5; }; +typedef struct _qemuMonitorEventPanicInfoS390 qemuMonitorEventPanicInfoS390; +typedef qemuMonitorEventPanicInfoS390 *qemuMonitorEventPanicInfoS390Ptr; +struct _qemuMonitorEventPanicInfoS390 { + /* S390 specific guest panic information */ + int core; + unsigned long long psw_mask; + unsigned long long psw_addr; + char *reason; +}; + typedef struct _qemuMonitorEventPanicInfo qemuMonitorEventPanicInfo; typedef qemuMonitorEventPanicInfo *qemuMonitorEventPanicInfoPtr; struct _qemuMonitorEventPanicInfo { qemuMonitorEventPanicInfoType type; union { qemuMonitorEventPanicInfoHyperv hyperv; + qemuMonitorEventPanicInfoS390 s390; } data; }; diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 242b92ea..5c1f6836 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -576,6 +576,44 @@ qemuMonitorJSONGuestPanicExtractInfoHyperv(virJSONValuePtr data) return NULL; } +static qemuMonitorEventPanicInfoPtr +qemuMonitorJSONGuestPanicExtractInfoS390(virJSONValuePtr data) +{ + qemuMonitorEventPanicInfoPtr ret; + int core; + unsigned long long psw_mask, psw_addr; + const char *reason = NULL; + + if (VIR_ALLOC(ret) < 0) + return NULL; + + ret->type = QEMU_MONITOR_EVENT_PANIC_INFO_TYPE_S390; + + if (virJSONValueObjectGetNumberInt(data, "core", &core) < 0 || + virJSONValueObjectGetNumberUlong(data, "psw-mask", &psw_mask) < 0 || + virJSONValueObjectGetNumberUlong(data, "psw-addr", &psw_addr) < 0) { + goto error; + } + + ret->data.s390.core = core; + ret->data.s390.psw_mask = psw_mask; + ret->data.s390.psw_addr = psw_addr; + + reason = virJSONValueObjectGetString(data, "reason");

+ if (!reason) + goto error; + + if (VIR_STRDUP(ret->data.s390.reason, reason) < 0) + goto no_memory; + + return ret; + + error: + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("malformed s390 panic data")); + no_memory: + qemuMonitorEventPanicInfoFree(ret); + return NULL; +} static qemuMonitorEventPanicInfoPtr qemuMonitorJSONGuestPanicExtractInfo(virJSONValuePtr data) @@ -584,6 +622,8 @@ qemuMonitorJSONGuestPanicExtractInfo(virJSONValuePtr data) if (STREQ_NULLABLE(type, "hyper-v")) return qemuMonitorJSONGuestPanicExtractInfoHyperv(data); + else if (STREQ_NULLABLE(type, "s390")) + return qemuMonitorJSONGuestPanicExtractInfoS390(data); virReportError(VIR_ERR_INTERNAL_ERROR, _("unknown panic info type '%s'"), NULLSTR(type));