[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH V8 2/9] virtio: device_plugged() can fail
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PATCH V8 2/9] virtio: device_plugged() can fail |
Date: |
Fri, 29 May 2015 14:15:25 +0800 |
This patch passes error pointer to transport specific device_plugged()
callback. Through this way, device_plugged() can do some transport
specific check and fail. This will be uesd by following patches that
check the number of virtqueues against the transport limitation.
Cc: Cornelia Huck <address@hidden>
Cc: Christian Borntraeger <address@hidden>
Cc: Richard Henderson <address@hidden>
Cc: Alexander Graf <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
hw/s390x/virtio-ccw.c | 2 +-
hw/virtio/virtio-bus.c | 6 ++----
hw/virtio/virtio-mmio.c | 2 +-
hw/virtio/virtio-pci.c | 2 +-
hw/virtio/virtio.c | 7 ++++++-
include/hw/virtio/virtio-bus.h | 4 ++--
6 files changed, 13 insertions(+), 10 deletions(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index c96101a..994284c 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1413,7 +1413,7 @@ static int virtio_ccw_load_config(DeviceState *d,
QEMUFile *f)
}
/* This is called by virtio-bus just after the device is plugged. */
-static void virtio_ccw_device_plugged(DeviceState *d)
+static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
SubchDev *sch = dev->sch;
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index be886e7..ceabe99 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -38,7 +38,7 @@ do { printf("virtio_bus: " fmt , ## __VA_ARGS__); } while (0)
#endif
/* A VirtIODevice is being plugged */
-int virtio_bus_device_plugged(VirtIODevice *vdev)
+void virtio_bus_device_plugged(VirtIODevice *vdev, Error **errp)
{
DeviceState *qdev = DEVICE(vdev);
BusState *qbus = BUS(qdev_get_parent_bus(qdev));
@@ -47,10 +47,8 @@ int virtio_bus_device_plugged(VirtIODevice *vdev)
DPRINTF("%s: plug device.\n", qbus->name);
if (klass->device_plugged != NULL) {
- klass->device_plugged(qbus->parent);
+ klass->device_plugged(qbus->parent, errp);
}
-
- return 0;
}
/* Reset the virtio_bus */
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 10123f3..dd3f80b 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -345,7 +345,7 @@ static void virtio_mmio_reset(DeviceState *d)
/* virtio-mmio device */
/* This is called by virtio-bus just after the device is plugged. */
-static void virtio_mmio_device_plugged(DeviceState *opaque)
+static void virtio_mmio_device_plugged(DeviceState *opaque, Error **errp)
{
VirtIOMMIOProxy *proxy = VIRTIO_MMIO(opaque);
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 867c9d1..b88c8e0 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -918,7 +918,7 @@ static int virtio_pci_query_nvectors(DeviceState *d)
}
/* This is called by virtio-bus just after the device is plugged. */
-static void virtio_pci_device_plugged(DeviceState *d)
+static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
{
VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
VirtioBusState *bus = &proxy->bus;
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 6985e76..0b50f9d 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -1328,7 +1328,12 @@ static void virtio_device_realize(DeviceState *dev,
Error **errp)
return;
}
}
- virtio_bus_device_plugged(vdev);
+
+ virtio_bus_device_plugged(vdev, &err);
+ if (err != NULL) {
+ error_propagate(errp, err);
+ return;
+ }
}
static void virtio_device_unrealize(DeviceState *dev, Error **errp)
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index a4588ca..e5bbfbf 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -56,7 +56,7 @@ typedef struct VirtioBusClass {
* transport independent init function.
* This is called by virtio-bus just after the device is plugged.
*/
- void (*device_plugged)(DeviceState *d);
+ void (*device_plugged)(DeviceState *d, Error **errp);
/*
* transport independent exit function.
* This is called by virtio-bus just before the device is unplugged.
@@ -75,7 +75,7 @@ struct VirtioBusState {
BusState parent_obj;
};
-int virtio_bus_device_plugged(VirtIODevice *vdev);
+void virtio_bus_device_plugged(VirtIODevice *vdev, Error **errp);
void virtio_bus_reset(VirtioBusState *bus);
void virtio_bus_device_unplugged(VirtIODevice *bus);
/* Get the device id of the plugged device. */
--
2.1.4
- [Qemu-devel] [PATCH V8 0/9] Support more virtio queues, Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 1/9] virtio-net: adding all queues in .realize(), Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 2/9] virtio: device_plugged() can fail,
Jason Wang <=
- [Qemu-devel] [PATCH V8 3/9] virtio: introduce virtio_get_num_queues(), Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 4/9] virtio-ccw: introduce ccw specific queue limit, Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 5/9] virtio-ccw: validate the number of queues against bus limitation, Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 6/9] virtio-s390: introduce virito s390 queue limit, Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 7/9] virtio-s390: introduce virtio_s390_device_plugged(), Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 8/9] virtio: rename VIRTIO_PCI_QUEUE_MAX to VIRTIO_QUEUE_MAX, Jason Wang, 2015/05/29
- [Qemu-devel] [PATCH V8 9/9] virtio: increase the queue limit to 1024, Jason Wang, 2015/05/29