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xen-devel
RE: [Xen-devel] Early test for Windows vs Linux hvm domain?
>
> Thanks to all for the 32-bit vs 64-bit ideas. Keir's
> EFER LME bit works like a charm.
>
> Now a probably tougher (and more controversial) question:
>
> Is there any algorithm or heuristic early in hvm launch that
> can distinguish between a windows guest and a linux guest
> (64-bit specifically, but if same or different test works
> for 32-bit that would be useful too).
>
You may have mentioned it in your other thread, but what exactly is the
problem you are trying to solve here?
I would say that the answer is definitely no, depending on what your
definition of 'early' is. A hvm domain could invoke grub, and then a
user could then choose to run windows or Linux (or BSD, or another OS
altogether). Does DOS work under HVM? If it does, a HVM domain could
start DOS, the user could spend a bit of time in there, and then later
on launch Linux from there.
James
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