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qemu/virtio: fix reset with device removal

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virtio pci registers its own reset handler, but fails to unregister it,
which will lead to crashes after device removal.  Solve this problem by
switching to qdev reset handler, which is automatically unregistered.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2009-09-16 13:40:37 +03:00 • committed by Anthony Liguori
parent 7f23f812c4
commit e489030df2
1 changed files with 8 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

14
hw/virtio-pci.c
View file

@ -155,9 +155,9 @@ static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f)
return 0;
}
static void virtio_pci_reset(void *opaque)
static void virtio_pci_reset(DeviceState *d)
{
VirtIOPCIProxy *proxy = opaque;
VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
virtio_reset(proxy->vdev);
msix_reset(&proxy->pci_dev);
}
@ -184,7 +184,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
case VIRTIO_PCI_QUEUE_PFN:
pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
if (pa == 0)
virtio_pci_reset(proxy);
virtio_pci_reset(&proxy->pci_dev.qdev);
else
virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
break;
@ -198,7 +198,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
case VIRTIO_PCI_STATUS:
vdev->status = val & 0xFF;
if (vdev->status == 0)
virtio_pci_reset(proxy);
virtio_pci_reset(&proxy->pci_dev.qdev);
break;
case VIRTIO_MSI_CONFIG_VECTOR:
msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
@ -429,8 +429,6 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
pci_register_bar(&proxy->pci_dev, 0, size, PCI_ADDRESS_SPACE_IO,
virtio_map);
qemu_register_reset(virtio_pci_reset, proxy);
virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
}
@ -534,6 +532,7 @@ static PCIDeviceInfo virtio_info[] = {
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_PROP_END_OF_LIST(),
},
.qdev.reset = virtio_pci_reset,
},{
.qdev.name = "virtio-net-pci",
.qdev.size = sizeof(VirtIOPCIProxy),
@ -543,6 +542,7 @@ static PCIDeviceInfo virtio_info[] = {
NIC_NVECTORS_UNSPECIFIED),
DEFINE_PROP_END_OF_LIST(),
},
.qdev.reset = virtio_pci_reset,
},{
.qdev.name = "virtio-console-pci",
.qdev.size = sizeof(VirtIOPCIProxy),
@ -551,10 +551,12 @@ static PCIDeviceInfo virtio_info[] = {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_PROP_END_OF_LIST(),
},
.qdev.reset = virtio_pci_reset,
},{
.qdev.name = "virtio-balloon-pci",
.qdev.size = sizeof(VirtIOPCIProxy),
.init = virtio_balloon_init_pci,
.qdev.reset = virtio_pci_reset,
},{
/* end of list */
}