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authorClaudio Imbrenda <imbrenda@linux.vnet.ibm.com>2016-08-15 18:44:04 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-07-14 12:29:47 +0200
commitf860d49753300d4e57f49e4d9016e79e5c5ac2ee (patch)
tree27df259651613bdac6baddcc24105c4b07e7889e /hw
parent903fd80b03243476a97522b79d4a7c8546dfe3df (diff)
s390x/migration: Monitor commands for storage attributes
Add an "info" monitor command to non-destructively inspect the state of the storage attributes of the guest, and a normal command to toggle migration mode (useful for debugging). Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/s390x/s390-stattrib.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/hw/s390x/s390-stattrib.c b/hw/s390x/s390-stattrib.c
index 922b75638e..d14923f099 100644
--- a/hw/s390x/s390-stattrib.c
+++ b/hw/s390x/s390-stattrib.c
@@ -11,6 +11,7 @@
#include "qemu/osdep.h"
#include "hw/boards.h"
+#include "qmp-commands.h"
#include "migration/qemu-file.h"
#include "migration/register.h"
#include "hw/s390x/storage-attributes.h"
@@ -26,6 +27,15 @@
#define STATTR_FLAG_ERROR 0x04ULL
#define STATTR_FLAG_DONE 0x08ULL
+static S390StAttribState *s390_get_stattrib_device(void)
+{
+ S390StAttribState *sas;
+
+ sas = S390_STATTRIB(object_resolve_path_type("", TYPE_S390_STATTRIB, NULL));
+ assert(sas);
+ return sas;
+}
+
void s390_stattrib_init(void)
{
Object *obj;
@@ -42,6 +52,58 @@ void s390_stattrib_init(void)
qdev_init_nofail(DEVICE(obj));
}
+/* Console commands: */
+
+void hmp_migrationmode(Monitor *mon, const QDict *qdict)
+{
+ S390StAttribState *sas = s390_get_stattrib_device();
+ S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
+ uint64_t what = qdict_get_int(qdict, "mode");
+ int r;
+
+ r = sac->set_migrationmode(sas, what);
+ if (r < 0) {
+ monitor_printf(mon, "Error: %s", strerror(-r));
+ }
+}
+
+void hmp_info_cmma(Monitor *mon, const QDict *qdict)
+{
+ S390StAttribState *sas = s390_get_stattrib_device();
+ S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
+ uint64_t addr = qdict_get_int(qdict, "addr");
+ uint64_t buflen = qdict_get_try_int(qdict, "count", 8);
+ uint8_t *vals;
+ int cx, len;
+
+ vals = g_try_malloc(buflen);
+ if (!vals) {
+ monitor_printf(mon, "Error: %s\n", strerror(errno));
+ return;
+ }
+
+ len = sac->peek_stattr(sas, addr / TARGET_PAGE_SIZE, buflen, vals);
+ if (len < 0) {
+ monitor_printf(mon, "Error: %s", strerror(-len));
+ goto out;
+ }
+
+ monitor_printf(mon, " CMMA attributes, "
+ "pages %" PRIu64 "+%d (0x%" PRIx64 "):\n",
+ addr / TARGET_PAGE_SIZE, len, addr & ~TARGET_PAGE_MASK);
+ for (cx = 0; cx < len; cx++) {
+ if (cx % 8 == 7) {
+ monitor_printf(mon, "%02x\n", vals[cx]);
+ } else {
+ monitor_printf(mon, "%02x", vals[cx]);
+ }
+ }
+ monitor_printf(mon, "\n");
+
+out:
+ g_free(vals);
+}
+
/* Migration support: */
static int cmma_load(QEMUFile *f, void *opaque, int version_id)