Revision 54dd9321 hw/virtio-pci.c
| b/hw/virtio-pci.c | ||
|---|---|---|
| 451 | 451 |
return 0; |
| 452 | 452 |
} |
| 453 | 453 |
|
| 454 |
static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
|
| 455 |
{
|
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| 456 |
VirtIOPCIProxy *proxy = opaque; |
|
| 457 |
VirtIODevice *vdev = proxy->vdev; |
|
| 458 |
int r, n; |
|
| 459 |
|
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| 460 |
for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) {
|
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| 461 |
if (!virtio_queue_get_num(vdev, n)) {
|
|
| 462 |
break; |
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| 463 |
} |
|
| 464 |
|
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| 465 |
r = virtio_pci_set_guest_notifier(opaque, n, assign); |
|
| 466 |
if (r < 0) {
|
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| 467 |
goto assign_error; |
|
| 468 |
} |
|
| 469 |
} |
|
| 470 |
|
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| 471 |
return 0; |
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| 472 |
|
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assign_error: |
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| 474 |
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ |
|
| 475 |
while (--n >= 0) {
|
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| 476 |
virtio_pci_set_guest_notifier(opaque, n, !assign); |
|
| 477 |
} |
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| 478 |
return r; |
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| 479 |
} |
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| 480 |
|
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| 454 | 481 |
static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
| 455 | 482 |
{
|
| 456 | 483 |
VirtIOPCIProxy *proxy = opaque; |
| ... | ... | |
| 488 | 515 |
.load_queue = virtio_pci_load_queue, |
| 489 | 516 |
.get_features = virtio_pci_get_features, |
| 490 | 517 |
.set_host_notifier = virtio_pci_set_host_notifier, |
| 491 |
.set_guest_notifier = virtio_pci_set_guest_notifier,
|
|
| 518 |
.set_guest_notifiers = virtio_pci_set_guest_notifiers,
|
|
| 492 | 519 |
}; |
| 493 | 520 |
|
| 494 | 521 |
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
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