Thank you so much, Stefan.

I tried the fresh snapshot of Aug 14 and it works with Opteron_G2 and
QEMU Virtual CPU (and probably other cpu models).


On Tue, 15 Aug 2017 04:54:07 +0200 (CEST)
Stefan Fritsch <[email protected]> wrote:

> On Tue, 15 Aug 2017, Stefan Fritsch wrote:
> 
> > On Mon, 14 Aug 2017, msheremet wrote:  
> > > I get kernel panic trying to boot snapshot image install61.iso on the
> > > amd64 QEMU virtual machine. the problem started to happen with late
> > > July snapshots. And it still happens with the latest snapshot I can
> > > obtain (Aug 11). Here is the output of the boot process:  
> > 
> > Try to choose a different emulated cpu in qemu. For this cpu type, openbsd 
> > tries to make special MSR settings to work around cpu erratas, but qemu 
> > does not emulate those MSRs. At least that was the problem with some other 
> > similar panic I got reported.  
> 
> Actually I hit send a bit too quickly. The panic looks different, so I 
> don't know if it's the same issue. But another report said that qemu -cpu 
> Opteron_G3 caused a panic but Opteron_G2 worked.
> 
> > > cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
> > > cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
> > > uvm_fault(0xffffffff81872dd0, 0xfffffff78183f2b0, 0, 1) -> e
> > > fatal page fault in supervisor mode
> > > trap type 6 code 0 rip ffffffff811c17a0 cs 8 rflags 10286 cr2
> > > fffffff78183f2b0 cpl e rsp ffffffff81a058a0
> > > panic: trap type 6, code=0, pc=ffffffff811c17a0
> > > 
> > > The operating system has halted.
> > > Please press any key to reboot.
> > > 
> > > 
> > > 6.1 release image and earlier snapshots boot fine.
> > > 
> > > Could you please shed some light on this issue for I cannot find the
> > > reason myself.
> > > 
> > > Thanks,
> > > Maksym
> > > 
> > >   
> > 
> >   

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