Re: [PATCH 0/6] KVM: x86: Make the cause of instruction emulation available to user-space

[Jim Mattson]

On Mon, Apr 12, 2021 at 6:09 AM David Edmondson
<david.edmondson@xxxxxxxxxx> wrote:
>
> Instruction emulation happens for a variety of reasons, yet on error
> we have no idea exactly what triggered it. Add a cause of emulation to
> the various originators and pass it upstream when emulation fails.

What is userspace going to do with this information? It's hard to say
whether or not this is the right ABI without more context.