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Re: [Xen-devel] [PATCH] x86/hvm: Allow the guest to permit the use of userspace hypercalls

On 11/01/16 17:17, Andrew Cooper wrote:
> So from one point of view, sufficient justification for this change is
> "because the Linux way isn't the only valid way to do this".

"Because we can" isn't a good justification for adding something new.
Particularly something that is trivially easy to (accidentally) misuse
and open a big security hole between userspace and kernel.

The vague idea for a userspace netfront that's floating around
internally is also not a good reason for pushing this feature at this time.


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