Re: [RFC PATCH 0/3] generic hypercall support

Avi Kivity
2009-05-08T07:57:21Z

Marcelo Tosatti wrote:
> Also it would be interesting to see the MMIO comparison with EPT/NPT,
> it probably sucks much less than what you're seeing.
>

Why would NPT improve mmio? If anything, it would be worse, since the
processor has to do the nested walk.

Of course, these are newer machines, so the absolute results as well as
the difference will be smaller.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.