[Qemu-devel] [PATCH for-2.11] hw/s390x/s390-skeys: Mark the storage key devices with user_creatable = false

[Thomas Huth <thuth@redhat.com>]

QEMU currently aborts if the user tries to create a skey device:

$ s390x-softmmu/qemu-system-s390x -nographic -device s390-skeys-qemu
qemu-system-s390x: hw/s390x/s390-skeys.c:30: s390_get_skeys_device:
 Assertion `ss' failed.
Aborted (core dumped)

The storage key devices are only meant to be instantiated one time,
internally. They can not be used by the user, so mark them with
user_creatable = false.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 hw/s390x/s390-skeys-kvm.c | 4 ++++
 hw/s390x/s390-skeys.c     | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/hw/s390x/s390-skeys-kvm.c b/hw/s390x/s390-skeys-kvm.c
index 131da56..dc54ed8 100644
--- a/hw/s390x/s390-skeys-kvm.c
+++ b/hw/s390x/s390-skeys-kvm.c
@@ -54,10 +54,14 @@ static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn,
 static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data)
 {
     S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc);
+    DeviceClass *dc = DEVICE_CLASS(oc);
 
     skeyclass->skeys_enabled = kvm_s390_skeys_enabled;
     skeyclass->get_skeys = kvm_s390_skeys_get;
     skeyclass->set_skeys = kvm_s390_skeys_set;
+
+    /* Reason: Internal device (only one skeys device for the whole memory) */
+    dc->user_creatable = false;
 }
 
 static const TypeInfo kvm_s390_skeys_info = {
diff --git a/hw/s390x/s390-skeys.c b/hw/s390x/s390-skeys.c
index c0de3b0..53ad5d3 100644
--- a/hw/s390x/s390-skeys.c
+++ b/hw/s390x/s390-skeys.c
@@ -229,10 +229,14 @@ static int qemu_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn,
 static void qemu_s390_skeys_class_init(ObjectClass *oc, void *data)
 {
     S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc);
+    DeviceClass *dc = DEVICE_CLASS(oc);
 
     skeyclass->skeys_enabled = qemu_s390_skeys_enabled;
     skeyclass->get_skeys = qemu_s390_skeys_get;
     skeyclass->set_skeys = qemu_s390_skeys_set;
+
+    /* Reason: Internal device (only one skeys device for the whole memory) */
+    dc->user_creatable = false;
 }
 
 static const TypeInfo qemu_s390_skeys_info = {
-- 
1.8.3.1