Re: [RFC] RNG rewrite...

[H. Peter Anvin]

Jeff Garzik wrote:
> > MSR instructions cannot execute out of userspace, but the MSR driver
> > might be possible to use.  It's usually quite slow, however.
>
> MSRs are used for setup, not for actual data.
>
> Intel:  magic MMIO address (readb)
> AMD:    magic PIO address (inl)
> VIA:    CPU instruction ('xstore')

For setup, the MSR driver is fine.

	-hpa
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