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i386: Hyper-V VMBus ACPI DSDT entry

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Guest OS uses ACPI to discover VMBus presence.  Add a corresponding
entry to DSDT in case VMBus has been enabled.

Experimentally Windows guests were found to require this entry to
include two IRQ resources. They seem to never be used but they still
have to be there.

Make IRQ numbers user-configurable via corresponding properties; use 7
and 13 by default.

Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20200424123444.3481728-6-arilou@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jon Doron 2020-04-24 15:34:43 +03:00 • committed by Paolo Bonzini
parent cab78e7cb2
commit 6775d15de1
3 changed files with 53 additions and 0 deletions
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7
hw/hyperv/vmbus.c
View file

@ -2641,6 +2641,12 @@ static const VMStateDescription vmstate_vmbus_bridge = {
},
};
static Property vmbus_bridge_props[] = {
DEFINE_PROP_UINT8("irq0", VMBusBridge, irq0, 7),
DEFINE_PROP_UINT8("irq1", VMBusBridge, irq1, 13),
DEFINE_PROP_END_OF_LIST()
};
static void vmbus_bridge_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
@ -2651,6 +2657,7 @@ static void vmbus_bridge_class_init(ObjectClass *klass, void *data)
sk->explicit_ofw_unit_address = vmbus_bridge_ofw_unit_address;
set_bit(DEVICE_CATEGORY_BRIDGE, k->categories);
k->vmsd = &vmstate_vmbus_bridge;
device_class_set_props(k, vmbus_bridge_props);
/* override SysBusDevice's default */
k->user_creatable = true;
}