Re: 4.01 panic/lock issues?

Izumi Tsutsui <[email protected]> Tue, 20 Jan 2009 00:03:40 +0900

Newsgroups	gmane.os.netbsd.ports.sun3
Message-ID	<[email protected]>

[email protected] wrote:

> > Anyway, using -m68040 on building packages is too bad..
> 
>  	I believe that the performance penalty of -m68020 on 040 boxes
>  	is great enough that there is real benefit for using -m68040.
>  	Defaulting to -m68020-60 would reduce that need significantly...

As seen in this thread, -m68040 binaries trigger
a fatal FPU_EMULATE bug and panics on 020/030.

Even if FPE is fixed, they still cause SIGILL or wrong results
on 020/030 unless we implement FPE functions for 040/060 specific
FP instructions. (-m68020-60 is safe of course)
---
Izumi Tsutsui