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

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR port-xen/51526; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-xen-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Subject: Re: port-xen/51526: NetBSD-7 panic on lenovo x42 and x200 with
 hypervisor_mmu_update failed
Date: Mon, 3 Oct 2016 19:30:54 +0200

 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
 --