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Re: XEN help needed
> I've got a XEN3_DOMU virtual machine currently running NetBSD 8.1, and
> hosted on a commercial provider (www.prgmr.com). Since I'm running
> 8.1 I think that implies that I'm running in HVM mode?
most NetBSD's on prgmr running in PV mode currently as far as I
understood (at least, mine does)
> Anyway, the provider will soon be upgrading their host to a PVHVM-only
> environment. That means that I need to upgrade, to -current.
not really. I was in touch with them and the original background is
XSA-286, which affects PV DomU's and the recommended mitigation is to
use HVM. There are patches to fix XSA-286 also for PV, but some have
performance impact, some not, some may not fix it completely etc.
Nevertheless, prgmr's approach to get rid of PV's eliminates the problem
> I'm really reluctant to update my userland at this time unless it is
> absolutely necessary.
prgmr did not force me to go HVM as I remarked, I'm running NetBSD and
want to stay on NetBSD for the time being until PVHVM is on a release
and I'm fully aware of XSA-286.
At least, this was my understanding ;-)
Furthermore, they are planning a couple of AMD based Dom0 systems, which
should behave differently and a move of NetBSD-PV-DomUs may happen once
those systems are ready for service.
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