tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
virtio: virtio_break_device() to mark all virtqueues broken.
Good for post-apocalyptic scenarios, like S/390 hotplug.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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drivers/virtio/virtio_ring.c
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drivers/virtio/virtio_ring.c
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}
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EXPORT_SYMBOL_GPL(virtqueue_is_broken);
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/*
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* This should prevent the device from being used, allowing drivers to
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* recover. You may need to grab appropriate locks to flush.
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*/
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void virtio_break_device(struct virtio_device *dev)
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{
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struct virtqueue *_vq;
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list_for_each_entry(_vq, &dev->vqs, list) {
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struct vring_virtqueue *vq = to_vvq(_vq);
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vq->broken = true;
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}
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}
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EXPORT_SYMBOL_GPL(virtio_break_device);
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MODULE_LICENSE("GPL");
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include/linux/virtio.h
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include/linux/virtio.h
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int register_virtio_device(struct virtio_device *dev);
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void unregister_virtio_device(struct virtio_device *dev);
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void virtio_break_device(struct virtio_device *dev);
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/**
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* virtio_driver - operations for a virtio I/O driver
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* @driver: underlying device driver (populate name and owner).