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s390x/s390-virtio-ccw: add zpcii-disable machine property

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The zpcii-disable machine property can be used to force-disable the use
of zPCI interpretation facilities for a VM.  By default, this setting
will be off for machine 7.2 and newer.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20220902172737.170349-9-mjrosato@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Fix contextual conflict in ccw_machine_7_1_instance_options()]
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Matthew Rosato 2022-09-02 13:27:37 -04:00 • committed by Thomas Huth
parent 9ee8f7e46a
commit 59d1ce4439
5 changed files with 39 additions and 2 deletions
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24
hw/s390x/s390-virtio-ccw.c
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@ -645,6 +645,21 @@ static inline void machine_set_dea_key_wrap(Object *obj, bool value,
ms->dea_key_wrap = value;
}
static inline bool machine_get_zpcii_disable(Object *obj, Error **errp)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
return ms->zpcii_disable;
}
static inline void machine_set_zpcii_disable(Object *obj, bool value,
Error **errp)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
ms->zpcii_disable = value;
}
static S390CcwMachineClass *current_mc;
/*
@ -740,6 +755,13 @@ static inline void s390_machine_initfn(Object *obj)
"Up to 8 chars in set of [A-Za-z0-9. ] (lower case chars converted"
" to upper case) to pass to machine loader, boot manager,"
" and guest kernel");
object_property_add_bool(obj, "zpcii-disable",
machine_get_zpcii_disable,
machine_set_zpcii_disable);
object_property_set_description(obj, "zpcii-disable",
"disable zPCI interpretation facilties");
object_property_set_bool(obj, "zpcii-disable", false, NULL);
}
static const TypeInfo ccw_machine_info = {
@ -804,10 +826,12 @@ DEFINE_CCW_MACHINE(7_2, "7.2", true);
static void ccw_machine_7_1_instance_options(MachineState *machine)
{
static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V7_1 };
S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
ccw_machine_7_2_instance_options(machine);
s390_cpudef_featoff_greater(16, 1, S390_FEAT_PAIE);
s390_set_qemu_cpu_model(0x8561, 15, 1, qemu_cpu_feat);
ms->zpcii_disable = true;
}
static void ccw_machine_7_1_class_options(MachineClass *mc)