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s390x/kvm: enable guarded storage

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Introduce guarded storage support for KVM guests on s390.
We need to enable the capability, extend machine check validity,
sigp store-additional-status-at-address, and migration.

The feature is fenced for older machine type versions.

Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Fan Zhang 2017-02-15 04:47:49 +01:00 • committed by Christian Borntraeger
parent c0a9cd940e
commit 62deb62d99
5 changed files with 106 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

18
hw/s390x/s390-virtio-ccw.c
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@ -211,6 +211,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
s390mc->ri_allowed = true;
s390mc->cpu_model_allowed = true;
s390mc->css_migration_enabled = true;
s390mc->gs_allowed = true;
mc->init = ccw_init;
mc->reset = s390_machine_reset;
mc->hot_add_cpu = s390_hot_add_cpu;
@ -288,6 +289,22 @@ bool cpu_model_allowed(void)
return get_machine_class()->cpu_model_allowed;
}
bool gs_allowed(void)
{
if (kvm_enabled()) {
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
if (object_class_dynamic_cast(OBJECT_CLASS(mc),
TYPE_S390_CCW_MACHINE)) {
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
return s390mc->gs_allowed;
}
/* Make sure the "none" machine can have gs */
return true;
}
return false;
}
static char *machine_get_loadparm(Object *obj, Error **errp)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
@ -515,6 +532,7 @@ static void ccw_machine_2_9_class_options(MachineClass *mc)
{
S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
s390mc->gs_allowed = false;
ccw_machine_2_10_class_options(mc);
SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_9);
s390mc->css_migration_enabled = false;