Re: [PATCH v1 1/8] virtio: Force only split mode with protected guest

Jason Wang
2021-06-04T02:21:06Z

在 2021/6/4 上午1:33, Andy Lutomirski 写道:
> On 6/2/21 5:41 PM, Andi Kleen wrote:
>> Only allow split mode when in a protected guest. Followon
>> patches harden the split mode code paths, and we don't want
>> an malicious host to force anything else. Also disallow
>> indirect mode for similar reasons.
> I read this as "the virtio driver is buggy. Let's disable most of the
> buggy code in one special case in which we need a driver without bugs.
> In all the other cases (e.g. hardware virtio device connected over
> USB-C), driver bugs are still allowed."
>
> Can we just fix the driver without special cases?

I think we can, this is what this series tries to do:

https://www.spinics.net/lists/kvm/msg241825.html

It tries to fix without a special caring for any specific features.

Thanks

>
> --Andy