Re: port-xen/51526: NetBSD-7 panic on lenovo x42 and x200 with hypervisor_mmu_update failed

[Mike <ginger%email.su@localhost>]

On Mon, Oct 03, 2016 at 07:30:54PM +0200, Manuel Bouyer wrote:
> On Mon, Oct 03, 2016 at 04:45:00PM +0000, mk%steepath.eu@localhost wrote:
> > >Description:
> > NetBSD XEN3_DOM0 kernel crash during boot on Xen (xen41, xen42, xen45 and xen46) with some hardware. This was discovered during installing test server on some old computer. 
> > 
> > Lenovo x42 (dual-core, 4GB RAM):
> > 
> >  - crash: netbsd7 + xenkernel42 
> >  - crash: netbsd7 + xenkernel45 
> >  - crash: netbsd7 + xenkernel46 
> > 
> > Lenovo x200t (dual-core i7, 8GB RAM)
> > 
> >  - ok: netbsd6.1.5 + xen42
> >  - ok: netbsd6.1.5 + xen45
> >  - crash: netbsd7 + xen41
> >  - crash: netbsd7 + xen42
> >  - crash: netbsd7 + xen46
> > 
> > QEMU 2.7.0 (1CPU, 1024MB RAM, on voidlinux)
> > 
> >  - ok: netbsd7 + xen41
> >  - ok: netbsd7 + xen42
> >  - ok: netbsd7 + xen46
> >  - ok: netbsd6.1.5 + xen41
> >  - ok: netbsd6.1.5 + xen42
> 
> I would suspect the drm driver.
> Would it boot if you rebuild a kernel without DRI/DRM ?
> 
> -- 
> Manuel Bouyer <bouyer%antioche.eu.org@localhost>
>      NetBSD: 26 ans d'experience feront toujours la difference
> --
I hope it may be usefull: I recently found that I can't boot any
combination of xen(anymore) on netbsd-current(amd64).
CPU is P4 (HT 524 2-core).
I tested it without dri/drm!(mostly)
(and I can run several of this combinations fine in qemu though).
Now I have working radeondrmkms, and plans to make additional tests
with it. I also think I can try it with somewhat newer CPU... (dualcore celeron))
and see if it helps...