Re: [Xen-devel] address space reorganization

[Kip Macy <kip.macy@xxxxxxxxx>]

> > That works OK for the kernel, but you might have user space apps that
> > have adapted their behviour based on what the've found in /proc/cpuinfo.
> 
> A compromise then would be to lie to userspace and still recalibrate the
> kernel.

If you're saying what I think you are - I don't think people who have
customized their apps for SSE2 would like that.

You'll either have to have xend propagate a bitmask of the cpuid
capabilities so that xfrd won't migrate it or you tell users that "the
behaviour is undefined" if they use migration in a heterogeneous
cluster.

      -Kip

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