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[PATCH for-9.1 v5 01/14] s390/stattrib: Add Error** argument to set_migr
From: |
Cédric Le Goater |
Subject: |
[PATCH for-9.1 v5 01/14] s390/stattrib: Add Error** argument to set_migrationmode() handler |
Date: |
Wed, 20 Mar 2024 07:48:57 +0100 |
This will prepare ground for future changes adding an Error** argument
to the save_setup() handler. We need to make sure that on failure,
set_migrationmode() always sets a new error. See the Rules section in
qapi/error.h.
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Thomas Huth <thuth@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
include/hw/s390x/storage-attributes.h | 2 +-
hw/s390x/s390-stattrib-kvm.c | 12 ++++++++++--
hw/s390x/s390-stattrib.c | 15 ++++++++++-----
3 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/include/hw/s390x/storage-attributes.h
b/include/hw/s390x/storage-attributes.h
index
5239eb538c1b087797867a247abfc14551af6a4d..8921a04d514bf64a3113255ee10ed33fc598ae06
100644
--- a/include/hw/s390x/storage-attributes.h
+++ b/include/hw/s390x/storage-attributes.h
@@ -39,7 +39,7 @@ struct S390StAttribClass {
int (*set_stattr)(S390StAttribState *sa, uint64_t start_gfn,
uint32_t count, uint8_t *values);
void (*synchronize)(S390StAttribState *sa);
- int (*set_migrationmode)(S390StAttribState *sa, bool value);
+ int (*set_migrationmode)(S390StAttribState *sa, bool value, Error **errp);
int (*get_active)(S390StAttribState *sa);
long long (*get_dirtycount)(S390StAttribState *sa);
};
diff --git a/hw/s390x/s390-stattrib-kvm.c b/hw/s390x/s390-stattrib-kvm.c
index
24cd01382e2d74d62c2d7e980eb6aca1077d893d..eeaa8110981c970e91a8948f027e398c34637321
100644
--- a/hw/s390x/s390-stattrib-kvm.c
+++ b/hw/s390x/s390-stattrib-kvm.c
@@ -17,6 +17,7 @@
#include "sysemu/kvm.h"
#include "exec/ram_addr.h"
#include "kvm/kvm_s390x.h"
+#include "qapi/error.h"
Object *kvm_s390_stattrib_create(void)
{
@@ -137,14 +138,21 @@ static void
kvm_s390_stattrib_synchronize(S390StAttribState *sa)
}
}
-static int kvm_s390_stattrib_set_migrationmode(S390StAttribState *sa, bool val)
+static int kvm_s390_stattrib_set_migrationmode(S390StAttribState *sa, bool val,
+ Error **errp)
{
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MIGRATION,
.attr = val,
.addr = 0,
};
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ int r;
+
+ r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ if (r) {
+ error_setg_errno(errp, -r, "setting KVM_S390_VM_MIGRATION failed");
+ }
+ return r;
}
static long long kvm_s390_stattrib_get_dirtycount(S390StAttribState *sa)
diff --git a/hw/s390x/s390-stattrib.c b/hw/s390x/s390-stattrib.c
index
c483b62a9b5f71772639fc180bdad15ecb6711cb..b743e8a2fee84c7374460ccea6df1cf447cda44b
100644
--- a/hw/s390x/s390-stattrib.c
+++ b/hw/s390x/s390-stattrib.c
@@ -60,11 +60,13 @@ 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");
+ Error *local_err = NULL;
int r;
- r = sac->set_migrationmode(sas, what);
+ r = sac->set_migrationmode(sas, what, &local_err);
if (r < 0) {
- monitor_printf(mon, "Error: %s", strerror(-r));
+ monitor_printf(mon, "Error: %s", error_get_pretty(local_err));
+ error_free(local_err);
}
}
@@ -170,13 +172,15 @@ static int cmma_save_setup(QEMUFile *f, void *opaque)
{
S390StAttribState *sas = S390_STATTRIB(opaque);
S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
+ Error *local_err = NULL;
int res;
/*
* Signal that we want to start a migration, thus needing PGSTE dirty
* tracking.
*/
- res = sac->set_migrationmode(sas, 1);
+ res = sac->set_migrationmode(sas, true, &local_err);
if (res) {
+ error_report_err(local_err);
return res;
}
qemu_put_be64(f, STATTR_FLAG_EOS);
@@ -260,7 +264,7 @@ static void cmma_save_cleanup(void *opaque)
{
S390StAttribState *sas = S390_STATTRIB(opaque);
S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
- sac->set_migrationmode(sas, 0);
+ sac->set_migrationmode(sas, false, NULL);
}
static bool cmma_active(void *opaque)
@@ -293,7 +297,8 @@ static long long
qemu_s390_get_dirtycount_stub(S390StAttribState *sa)
{
return 0;
}
-static int qemu_s390_set_migrationmode_stub(S390StAttribState *sa, bool value)
+static int qemu_s390_set_migrationmode_stub(S390StAttribState *sa, bool value,
+ Error **errp)
{
return 0;
}
--
2.44.0
- [PATCH for-9.1 v5 00/14] migration: Improve error reporting, Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 02/14] vfio: Always report an error in vfio_save_setup(), Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 01/14] s390/stattrib: Add Error** argument to set_migrationmode() handler,
Cédric Le Goater <=
- [PATCH for-9.1 v5 03/14] migration: Always report an error in block_save_setup(), Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 05/14] migration: Add Error** argument to vmstate_save(), Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 06/14] migration: Add Error** argument to qemu_savevm_state_setup(), Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 04/14] migration: Always report an error in ram_save_setup(), Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 08/14] migration: Add Error** argument to .load_setup() handler, Cédric Le Goater, 2024/03/20
- [PATCH for-9.1 v5 07/14] migration: Add Error** argument to .save_setup() handler, Cédric Le Goater, 2024/03/20