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932120
2014 Sep 19
3
Standardizing an MSR or other hypercall to get an RNG seed?
On 09/19/2014 04:12 PM, Andy Lutomirski wrote:
>
> To force deterministic execution.
>
> I incorrectly thought that the kernel could switch RDRAND on and off.
> It turns out that a hypervisor can do this, but not the kernel. Also,
> determinism is lost anyway because of TSX, which *also* can't be
> turned on and off.
>
Actually, a much bigger reason is because it