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virtio_pci: move structure to a header

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These are guest/host interfaces, so they belong in the header where e.g.
qemu will know to find them.

Note: we added a new structure as opposed to extending existing one
because someone might be relying on the size of the existing structure
staying unchanged.  Add a warning to avoid using sizeof.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
This commit is contained in:
Michael S. Tsirkin
2023-10-31 12:02:06 -04:00
parent 86f6c224c9
commit 3503895788
3 changed files with 15 additions and 10 deletions
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7
drivers/virtio/virtio_pci_modern_dev.c
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@@ -294,9 +294,10 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev)
err = -EINVAL;
mdev->common = vp_modern_map_capability(mdev, common,
sizeof(struct virtio_pci_common_cfg), 4,
0, sizeof(struct virtio_pci_modern_common_cfg),
&mdev->common_len, NULL);
sizeof(struct virtio_pci_common_cfg), 4, 0,
offsetofend(struct virtio_pci_modern_common_cfg,
queue_reset),
&mdev->common_len, NULL);
if (!mdev->common)
goto err_map_common;
mdev->isr = vp_modern_map_capability(mdev, isr, sizeof(u8), 1,