Re: kern/57515: sparc32 GCC defaults to SC memory ordering, which is not true on SPARCv8 processors

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

The following reply was made to PR port-sparc/57515; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: Taylor R Campbell <riastradh%NetBSD.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: kern/57515: sparc32 GCC defaults to SC memory ordering, which is
 not true on SPARCv8 processors
Date: Sat, 8 Jul 2023 23:24:50 +0200

 On Sat, Jul 08, 2023 at 08:19:37PM +0000, Taylor R Campbell wrote:
 > If a `NetBSD/sparc' userland is supposed to work on sparcv7 and
 > sparcv8 CPUs, well, that's a problem, because these are both broken:
 
 Well, I don't know about v8 and early details, but kinda assumed it
 would be similar to v9 where it is under (kernel's) software controll
 (and binaries get run with the memory model they are compiled for).
 
 If that is not the case we should make v8 the default, adjust documentation
 and provide support for v7 as source only. Few machines are left over
 in working condition.
 
 Martin