Andi Kleen wrote:
> Either not use any pvops or make sure all the pvops patching is atomic
> on the local CPU.
>
Erk, not really keen on that. Sounds complicated, unless there's a nice
general algorithm.
> Ok you can avoid MCEs by not enabling them until after you patch (which I think
> is the case currently), but it's more difficult with NMIs.
>
> The plain NMI handler is probably auditable.
> Or set a flag that makes the NMI handler just return during patching?
>
I think that's probably the simplest, if nobody will miss it.
J
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