Re: kern/54166: NetBSD tests hang after lost IDE interrupt under qemu

[Andreas Gustafsson <gson%gson.org@localhost>]

The following reply was made to PR kern/54166; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: Michael van Elst <mlelstv%serpens.de@localhost>, gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/54166: NetBSD tests hang after lost IDE interrupt under qemu
Date: Thu, 6 Jun 2019 18:51:58 +0300

 Since babylon5 was upgraded from NetBSD 7 to 8.1 a few days ago, most
 i386 and amd64 test runs have reported lost IDE interrupts and hung,
 even though it is still running qemu version 2.11.1 (rebuilt for
 NetBSD 8).
 
 So, strange as it may seem, it now looks like the key to reliably
 reproducing the lost interrupts that in turn reproduce the hang is not
 the qemu version, but the NetBSD version that qemu runs on (and/or was
 built for), specifically, that version being NetBSD 8.x.  This also
 explains why I haven't been able to reproduce the problem on a Linux
 host.
 -- 
 Andreas Gustafsson, gson%gson.org@localhost