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NetBSD-current under Hyper-V (Déjà vu...)


Five years to the day, I post the same. I'd agree that it is not
particularly important, google returns mostly rehashes of my post (
)when I search for 'NetBSD Hyper-V', so I guess I am one of the very
few trying to do that.

Basically, one has to boot netbsd -12 (both i386 and amd64) in order
to get usable system, otherwise one gets the the timeout messages
described in the above reference and no communication. In addition
there is something wrong with some keyboard timeouts, I guess - long
repeats are initiated very easily in this case, one has to be very
careful not to overstay the keypress more than a fraction of a second.
With ACPI and SMP disabled the tulip driver (legacy network adapter in
Microsoft's parlance) weems to work OK (only 'tlp: receive ruing
overrun' messages are seen from time to time, but the communication is
OK). Solaris/Illumos with the dnet driver works fine, FreeBSD is a
mixed bag (works on the full Hyper-V 3.0, refuses on the Windows 8
variety), OpenBSD is not working as well (but I haven't tried similar
to NetBSDs workarounds yet).

There is an ongoing project to port the synthetic driver and the rest
to FreeBSD - see ; this is
presently for FreeBSD 8.2, I don't know if it will be very hard to
port it to NetBSD (and that certainly is beyond my abilities, I could
help with testing of course).

I tried to go through the tulip code, but couldn't find anything
obvious (and as it is connected with the watchdog and the ACPI code,
suspected that the problem is deeper than the driver code itself ).

As the french would say it, "plus ça change, plus c'est la même chose"...


Chavdar Ivanov

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