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remote/machine: add vfio-user property 

Add vfio-user to x-remote machine. It is a boolean, which indicates if
the machine supports vfio-user protocol. The machine configures the bus
differently vfio-user and multiprocess protocols, so this property
informs it on how to configure the bus.

This property should be short lived. Once vfio-user fully replaces
multiprocess, this property could be removed.

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 5d51a152a419cbda35d070b8e49b772b60a7230a.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Jagannathan Raman 2022-06-13 16:26:23 -04:00 committed by Stefan Hajnoczi
parent 661e21c48e
commit 9b5b473eae
2 changed files with 25 additions and 0 deletions
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23
hw/remote/machine.c
View File

@ -58,6 +58,25 @@ static void remote_machine_init(MachineState *machine)
qbus_set_hotplug_handler(BUS(pci_host->bus), OBJECT(s)); qbus_set_hotplug_handler(BUS(pci_host->bus), OBJECT(s));
} }
static bool remote_machine_get_vfio_user(Object *obj, Error **errp)
{
RemoteMachineState *s = REMOTE_MACHINE(obj);
return s->vfio_user;
}
static void remote_machine_set_vfio_user(Object *obj, bool value, Error **errp)
{
RemoteMachineState *s = REMOTE_MACHINE(obj);
if (phase_check(PHASE_MACHINE_CREATED)) {
error_setg(errp, "Error enabling vfio-user - machine already created");
return;
}
s->vfio_user = value;
}
static void remote_machine_class_init(ObjectClass *oc, void *data) static void remote_machine_class_init(ObjectClass *oc, void *data)
{ {
MachineClass *mc = MACHINE_CLASS(oc); MachineClass *mc = MACHINE_CLASS(oc);
@ -67,6 +86,10 @@ static void remote_machine_class_init(ObjectClass *oc, void *data)
mc->desc = "Experimental remote machine"; mc->desc = "Experimental remote machine";
hc->unplug = qdev_simple_device_unplug_cb; hc->unplug = qdev_simple_device_unplug_cb;
object_class_property_add_bool(oc, "vfio-user",
remote_machine_get_vfio_user,
remote_machine_set_vfio_user);
} }
static const TypeInfo remote_machine = { static const TypeInfo remote_machine = {

2
include/hw/remote/machine.h
View File

@ -22,6 +22,8 @@ struct RemoteMachineState {
RemotePCIHost *host; RemotePCIHost *host;
RemoteIOHubState iohub; RemoteIOHubState iohub;
bool vfio_user;
}; };
/* Used to pass to co-routine device and ioc. */ /* Used to pass to co-routine device and ioc. */