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

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

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

From: Hauke Fath <hf%spg.tu-darmstadt.de@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: Martin Husemann <martin%duskware.de@localhost>, kern-bug-people%NetBSD.org@localhost
Subject: Re: kern/54646: Install kernel hangs attaching acpi0 on Sun X2200
Date: Fri, 25 Oct 2019 15:44:33 +0200

 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
 
 This fixes the problem. (There are, alas, other issues, but not related.)
 
 > 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.
 
 Well, we have two. It appears to be a class of AMD equipped machines 
 which, admittedly, will eventually go away.  ;)
 
 Cheerio,
 hauke