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

Ok, but what I meant is this, if we don't read from the descriptor 
ring, and validate all the other metadata supplied by the device (used 
id and len). Then there should be no way for the device to suppress 
the dma flags to write to the indirect descriptor table.

Or do you have an example how it can do that?

I don't. If you can validate everything it's probably ok

The only drawback is even more code to audit and test.

-Andi


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