On Sat, Oct 31, 2020 at 06:36:45PM -0400, Greg Troxel wrote: > > Manuel Bouyer <[email protected]> writes: > > > On Sat, Oct 31, 2020 at 01:37:17PM -0500, Jeremy C. Reed wrote: > >> One of my hosting providers is converting VPSes from PV to HVM > >> virtualization due to security issue > >> https://xenbits.xen.org/xsa/advisory-286.html > >> > >> They say NetBSD does not work under HVM mode and can choose a different > >> BSD (or Linux). > >> > >> Can someone tell me about this? I did look briefly at > >> http://wiki.netbsd.org/ports/xen/howto/ but don't understand the context > >> of the wiki saying it is supported but the hosting provider saying it > >> does not work. > > > > plain HVM, with emulated devices, works without problems (and always has). > > If they only support PV devices, then it works only in HEAD (GENERIC > > supports > > it) > > I have heard that the issue with with qemu "stub domains" and with > those, NetBSD ends up with PIO on disks and is thus unusably slow. > > https://wiki.xen.org/wiki/QEMU_vs_qemu-traditionnal_Feature_Comparison
So running a HEAD GENERIC, which has the PV drivers, would solve this. -- Manuel Bouyer <[email protected]> NetBSD: 26 ans d'experience feront toujours la difference --
