haraldwolff/qemu-patch-raspberry4
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virtio: do not reset msix state on soft reset

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msix state is managed by OS, not the
driver, so it's wrong to touch it
on io from driver.
Mark all vectors unused instead.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2009-11-24 16:45:35 +02:00
parent b5f28bcaee
commit 1b8e9b2742
1 changed files with 8 additions and 4 deletions
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12
hw/virtio-pci.c
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@ -185,8 +185,10 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
break;
case VIRTIO_PCI_QUEUE_PFN:
pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
if (pa == 0)
virtio_pci_reset(&proxy->pci_dev.qdev);
if (pa == 0) {
virtio_reset(proxy->vdev);
msix_unuse_all_vectors(&proxy->pci_dev);
}
else
virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
break;
@ -199,8 +201,10 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
break;
case VIRTIO_PCI_STATUS:
vdev->status = val & 0xFF;
if (vdev->status == 0)
virtio_pci_reset(&proxy->pci_dev.qdev);
if (vdev->status == 0) {
virtio_reset(proxy->vdev);
msix_unuse_all_vectors(&proxy->pci_dev);
}
break;
case VIRTIO_MSI_CONFIG_VECTOR:
msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);