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From: Christian Brauner <christian.brauner@ubuntu.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kars de Jong <jongk@linux-m68k.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux/m68k <linux-m68k@vger.kernel.org>
Subject: Re: [PATCH] m68k: Wire up clone3() syscall
Date: Mon, 16 Dec 2019 11:31:17 +0100
Message-ID: <20191216103117.7sdyjol6ifkxow2h@wittgenstein> (raw)
In-Reply-To: <CAMuHMdVLQF_KyWDn=HxmLAp6Vy3jyw=JLDQWryLt809sCecosA@mail.gmail.com>

On Sun, Dec 15, 2019 at 05:48:10PM +0100, Geert Uytterhoeven wrote:
> Hi Kars,
> 
> On Tue, Nov 26, 2019 at 4:29 PM Kars de Jong <jongk@linux-m68k.org> wrote:
> > Op di 26 nov. 2019 om 15:41 schreef Christian Brauner
> > <christian.brauner@ubuntu.com>:
> > > On Mon, Nov 25, 2019 at 10:12:25AM +0100, Geert Uytterhoeven wrote:
> > > > On Sun, Nov 24, 2019 at 8:52 PM Kars de Jong <jongk@linux-m68k.org> wrote:
> > > > > Wire up the clone3() syscall for m68k. The special entry point is done in
> > > > > assembler as was done for clone() as well. This is needed because all
> > > > > registers need to be saved. The C wrapper then calls the generic
> > > > > sys_clone3() with the correct arguments.
> > > > >
> > > > > Tested on A1200 using the simple test program from:
> > > > >
> > > > >   https://lore.kernel.org/lkml/20190716130631.tohj4ub54md25dys@brauner.io/
> > >
> > > Please note that we now have a growing test-suite for the clone3()
> > > syscall under
> > > tools/testing/selftests/clone3/*
> > >
> > > You can test on a suitable kernel with
> > >
> > > make TARGETS=clone3 kselftest
> >
> > I'm afraid my user space is almost prehistoric. I have a homebrewn
> > root filesystem of about 2001 vintage, and another one with Debian
> > 3.1.
> > So until I have bootstrapped a more recent one, I'll leave that to others ;-)
> 
> With Ubuntu's libc6-m68k-cross installed, the selftest binaries cross-build
> fine.  Running them on a very old Debian requires some hackery:
> 
>   1. Copy ld.so.1, ld-2.27.so, libc.so.6, and libc-2.27.so from
>      /usr/m68k-linux-gnu/lib/ to /tmp/lib on the m68k target,
>   2. mkdir /tmp/proc && mount proc /tmp/proc -t proc,
>   3. chroot /tmp /tmp/<test-binary>.
> 
> Unfortunately some tests failed:

Thanks for going through the trouble of testing this, Geert!
Christian

  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-24 19:52 Kars de Jong
2019-11-25  9:12 ` Geert Uytterhoeven
2019-11-26 14:41   ` Christian Brauner
2019-11-26 15:29     ` Kars de Jong
2019-12-15 16:48       ` Geert Uytterhoeven
2019-12-15 17:01         ` John Paul Adrian Glaubitz
2019-12-15 20:06           ` Geert Uytterhoeven
2019-12-16 10:31         ` Christian Brauner [this message]
2019-12-18  9:57         ` Kars de Jong
2020-01-12 16:06 ` Geert Uytterhoeven
2020-01-13  9:10   ` Geert Uytterhoeven
2020-01-13  9:18     ` Christian Brauner
2020-01-13  9:34       ` Geert Uytterhoeven
2020-01-13 10:17         ` Christian Brauner
2020-01-13 10:31           ` Geert Uytterhoeven

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