Re: kern/54646: Install kernel hangs attaching acpi0 on Sun X2200

[Martin Husemann <martin%duskware.de@localhost>]

The following reply was made to PR kern/54646; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: Hauke Fath <hf%spg.tu-darmstadt.de@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: kern/54646: Install kernel hangs attaching acpi0 on Sun X2200
Date: Thu, 24 Oct 2019 16:15:44 +0200

 On Thu, Oct 24, 2019 at 03:49:30PM +0200, Hauke Fath wrote:
 > On 2019-10-24 15:35, Martin Husemann wrote:
 > >   Could you build a custom install image (or boot a test kernel by some
 > >   other means) with
 > >   	options ACPI__DIS_IS_BROKEN
 > >   added as sys/arch/amd64/conf/GENERIC.local
 > 
 > Will do. Does this option have any unwanted side-effects, or would it be
 > generally applicable for amd64 kernels?
 
 It is not clear (a) why this code path fails [there have been various attempts
 debugging our acpica bindings to see where it goes wrong], and (b) what
 breakage results from not calling that _DIS method. But the number of machines
 affected seems to be pretty small.
 
 Martin