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microvm: turn off io reservations for pcie root ports 

The pcie host bridge has no io window on microvm,
so io reservations will not work.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20220701091516.43489-1-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2022-07-01 11:15:16 +02:00
parent c8ddcdd688
commit 3ef1497b46
1 changed files with 11 additions and 0 deletions
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11
hw/i386/microvm.c
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@ -631,6 +631,14 @@ static void microvm_machine_initfn(Object *obj)
qemu_register_powerdown_notifier(&mms->powerdown_req);
}
GlobalProperty microvm_properties[] = {
/*
* pcie host bridge (gpex) on microvm has no io address window,
* so reserving io space is not going to work. Turn it off.
*/
{ "pcie-root-port", "io-reserve", "0" },
};
static void microvm_class_init(ObjectClass *oc, void *data)
{
X86MachineClass *x86mc = X86_MACHINE_CLASS(oc);
@ -707,6 +715,9 @@ static void microvm_class_init(ObjectClass *oc, void *data)
"Set off to disable adding virtio-mmio devices to the kernel cmdline");
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
compat_props_add(mc->compat_props, microvm_properties,
G_N_ELEMENTS(microvm_properties));
}
static const TypeInfo microvm_machine_info = {