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From: Peter Maydell <peter.maydell@linaro.org>
To: "Emilio G. Cota" <cota@braap.org>
Cc: Riku Voipio <riku.voipio@iki.fi>,
	"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
	Alexander Graf <agraf@suse.de>,
	QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] linux-user crashes on clone(2) when run on ppc host
Date: Wed, 17 Jun 2015 09:58:27 +0100	[thread overview]
Message-ID: <CAFEAcA_y0d3T3368Ya9rnvKVTCsHvonnQguGAs=kaDdMS3Gh2w@mail.gmail.com> (raw)
In-Reply-To: <20150617005222.GA18884@flamenco>

On 17 June 2015 at 01:52, Emilio G. Cota <cota@braap.org> wrote:
> Hi,
>
> I'm having trouble running a simple multithreaded program on a PowerPC host machine.
>
> The machine I'm using is a ppc VM--I think it's running under KVM (I'm using
> OVH's RunAbove Power8 service):
>   admin@adsf:~/qemu$ uname -a
>   Linux adsf 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:27:09 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
>
> admin@adsf:~/qemu$ ppc64le-linux-user/qemu-ppc64le foo

Multithreaded binaries don't work with linux-user; there are a bunch
of known race conditions involving data structures we don't correctly
lock or make per-thread.

This is a long-standing issue; we're hoping we might get to fixing
it some time this year.

thanks
-- PMM

  reply	other threads:[~2015-06-17  8:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-17  0:52 [Qemu-devel] linux-user crashes on clone(2) when run on ppc host Emilio G. Cota
2015-06-17  8:58 ` Peter Maydell [this message]
2015-06-17 21:36   ` Emilio G. Cota
2015-06-18  7:42     ` Peter Maydell
2015-06-18 14:23       ` Emilio G. Cota
2015-06-18 14:55         ` Peter Maydell
2015-06-18 18:36           ` Emilio G. Cota

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