Re: 4.01 panic/lock issues?

David Brownlee <[email protected]> Mon, 19 Jan 2009 15:16:47 +0000 (GMT)

Newsgroups	gmane.os.netbsd.ports.sun3
Message-ID	<alpine.NEB.2.00.0901191515450.2890@localhost>

On Tue, 20 Jan 2009, Izumi Tsutsui wrote:

> [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)

 	I think we are in violent agtreement here - we should be
 	defaulting to -m68020-60 for userland and kernels which
 	need to be able to run on multiple processor types...

-- 
 		David/absolute       -- www.NetBSD.org: No hype required --