On Tue, Jul 31, 2018 at 04:59:54PM -0300, Elias M. Mariani wrote: > And segmentation fault after applying the patches on OPENBSD_63. > Maybe is just a coincidence, according to the data: > HOST: ubuntu > QEMU: Running OPENBSD_63 + patches > (was working OK until patched). > > Cheers. > Elias. > > 2018-07-31 16:36 GMT-03:00 Elias M. Mariani <marianiel...@gmail.com>: > > Trying to boot in QEMU from snapshots/amd64/cd63.iso or from > > snapshots/amd64/bsd.rd from the current disk: > > The booting starts but the machine gets rebooted almost immediately. > > > > I'm reporting this pretty bad. But is because I'm using 6.3 in that > > cloud server and just wanted to test if the snapshot was booting > > correctly. QEMU is running in godsknowswhat. > > I have never used QEMU myself, could someone try to reproduce ? > > using cd63.iso from OPENBSD_63 gives no problems. > > > > Cheers. > > Elias.
This may be related to the recent speculation/lfence fix that went in a week or so ago. It reads an MSR that should be present on that CPU (and if it isn't, we won't read it). I have one of those same Opterons here, I'll update it to -current and see if I can repro this on real hardware. My guess is that kvm is failing the RDMSR because the knowledge of it post-dates the time that kvm was built. -ml
