linux-kernel - Re: Removing architectures without upstream gcc support

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Date:   Fri, 23 Feb 2018 22:34:23 +0100
From:   Adam Borowski <kilobyte@...band.pl>
To:     James Bottomley <James.Bottomley@...senPartnership.com>
Cc:     Al Viro <viro@...IV.linux.org.uk>,
        Guenter Roeck <linux@...ck-us.net>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Richard Kuo <rkuo@...eaurora.org>,
        linux-hexagon@...r.kernel.org, Chen Liqin <liqin.linux@...il.com>,
        Lennox Wu <lennox.wu@...il.com>,
        Guan Xuetao <gxt@...c.pku.edu.cn>,
        James Hogan <jhogan@...nel.org>, linux-metag@...r.kernel.org,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>,
        openrisc@...ts.librecores.org, David Howells <dhowells@...hat.com>
Subject: Re: Removing architectures without upstream gcc support

On Fri, Feb 23, 2018 at 02:32:08PM -0500, James Bottomley wrote:
> On Fri, 2018-02-23 at 18:19 +0000, Al Viro wrote:
> [...]
> > IIRC, parisc/qemu stuff had been announced a while ago;
> 
> I have, but it didn't work sufficiently for me to either boot a kernel
> using system emulation or start an architecture container using user
> emulation.  I'll try again now that qemu has gone through several
> revisions.

Doesn't seem to work.  Debian package (1:2.11+dfsg-1) ships hppa support but
it doesn't even install binfmt; otherwise, -user is functional enough for a
minimal executable (so arch-test reports it as working[1]), but not for
anything libc:

[/srv/chroots/hppa]# chroot . /usr/bin/qemu-hppa-static /bin/true
qemu-hppa-static: /build/qemu-v8TF72/qemu-2.11+dfsg/target/hppa/translate.c:422: nullify_end: Assertion `status != DISAS_NORETURN && status != DISAS_IAQ_N_UPDATED' failed.
Segmentation fault

This looks bad enough that I didn't even look at qemu-system.


ᛗᛖᛟᚹ!

[1]. On archs without changed baseline, the test is just
write(1,"ok\n",3);_exit(0); unless there's a known issue to look for
such as swpb emulation being nop, etc.
-- 
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