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SubjectRe: [RFC 1/2] virtio_console: Add support for DMA memory allocation
"Michael S. Tsirkin" <> writes:
>> virtio: don't crash when device is buggy
>> Because of a sanity check in virtio_dev_remove, a buggy device can crash
>> kernel. And in case of rproc it's userspace so it's not a good idea.
>> We are unloading a driver so how bad can it be?
>> Be less aggressive in handling this error: if it's a driver bug,
>> warning once should be enough.
>> Signed-off-by: Michael S. Tsirkin <>
> Rusty?

Thanks, applied.

I really want to implement CONFIG_VIRTIO_DEVEL_DEBUG which would
incorporate the checks in virtio_ring.c as well as this. Then I could
also reshuffle descriptors (eg. split them) to find buggy devices like
qemu which assume the first descriptor is the struct virtio_net_hdr...


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