Re: Rust in Qemu BoF followup: Rust vs. qemu platform support

[David Gibson]

On Sat, Sep 18, 2021 at 01:01:35PM -0700, Richard Henderson wrote:
> On 9/17/21 4:03 AM, David Gibson wrote:
> > > For sparc 32, it was added to support Gentoo at that time which didn't
> > > switch to 64-bit yet (https://github.com/rust-lang/rust/pull/48297)
> > > 
> > > For the past 2-3y, Gentoo sparc is now 64 bit. (like Debian apparently for
> > > a while)
> > > 
> > > But apparently, by lack of CI it was downgraded to Tier-3.
> > > 
> > > Is it reasonable to officially drop support for sparc 32 in QEMU
> > > too?
> > 
> > As a qemu build arch I would say probably yes.
> 
> We dropped host support for sparcv8 (true 32-bit) a long time ago.
> We only support sparcv9 in ilp32 (sparcv8plus) and lp64 (sparc64).

We really need to update
https://qemu-project.gitlab.io/qemu/about/build-platforms.html
to clarify this then.  I don't really know what the procedures are for
updating the website.

> I'd be happy top drop sparcv8plus as well, because I haven't been able to
> test it for something like 2-3 years.

Sounds like a reasonable reason.

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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