Re: port-sparc/55573: sparc testbed logs many "coprocessor instruction" messages

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

The following reply was made to PR port-sparc/55573; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-sparc/55573: sparc testbed logs many "coprocessor
 instruction" messages
Date: Fri, 14 Aug 2020 10:30:23 +0200

 On Fri, Aug 14, 2020 at 08:15:01AM +0000, Andreas Gustafsson wrote:
 >   [  15.0167285] coprocessor instruction
 
 This is a FPU instruction with FPU disabled (trap T_CPDISABLED),
 sending a SIGILL to the process.
 
 Wild guess: the in-kernel FPU changes modified the FPU disable method
 so we now get this instead of T_FPDISABLED (which would cause us to do
 proper FPU fixup).
 
 Martin