[Qemu-devel] HQEMU :Violations of the GPLLicenses?

[Qemu-devel] HQEMU :Violations of the GPLLicenses?

[Lb peace]

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Efficient and retargetable dynamic binary translation on multicores
Author:Ding-Yong Hong; Jan-Jan Wu; Pen-Chung Yew; Wei-Chung Hsu; Chun-Chen
Hsu; Pangfeng Liu; Chien-Min Wang; Yeh-Ching Chung
IEEE Transactions on Parallel and Distributed Systems
DOI: 10.1109/TPDS.2013.56
Year: March 2014

--------
As mentioned in this article，HQEMU is based on QEMU,which is realesd under
the GPL license.But you cannot find any line of its source codes.
Is this group‘s behavior  a violation of the GPL Licenses?

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Re: [Qemu-devel] HQEMU :Violations of the GPLLicenses?

[Peter Maydell]

On 25 June 2014 15:05, Lb peace <peaceustc@gmail.com> wrote:
> Efficient and retargetable dynamic binary translation on multicores
> Author:Ding-Yong Hong; Jan-Jan Wu; Pen-Chung Yew; Wei-Chung Hsu; Chun-Chen
> Hsu; Pangfeng Liu; Chien-Min Wang; Yeh-Ching Chung
> IEEE Transactions on Parallel and Distributed Systems
> DOI: 10.1109/TPDS.2013.56
> Year: March 2014
>
> --------
> As mentioned in this article，HQEMU is based on QEMU,which is realesd under
> the GPL license.But you cannot find any line of its source codes.
> Is this group‘s behavior  a violation of the GPL Licenses?

Probably not unless they distributed the binaries without any
of the ways to provide or offer to provide source that the GPL
permits.

-- PMM

Re: [Qemu-devel] HQEMU :Violations of the GPLLicenses?

[Andreas Färber]

Hi,

Am 25.06.2014 16:05, schrieb Lb peace:
> Efficient and retargetable dynamic binary translation on multicores
> Author:Ding-Yong Hong; Jan-Jan Wu; Pen-Chung Yew; Wei-Chung Hsu;
> Chun-Chen Hsu; Pangfeng Liu; Chien-Min Wang; Yeh-Ching Chung
> IEEE Transactions on Parallel and Distributed Systems
> DOI: 10.1109/TPDS.2013.56  
> Year: March 2014  
> 
> --------
> As mentioned in this article，HQEMU is based on QEMU,which is realesd
> under the GPL license.But you cannot find any line of its source codes.
> Is this group‘s behavior  a violation of the GPL Licenses?

In general, if you want legal advice, talk to lawyers. :)
You're unlikely to find any on a development mailing list.

But you can read through the GPL version 2.0 yourself, in particular
section 3:
http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html

So, before you ask about GPL "violations", have you simply contacted
them by email and asked nicely whether they will provide you with the
sources matching that paper? As Peter says, if you don't have the
binaries, you have no legal right under the GPL to obtain the sources of
random software, but they might still do so. At least my former
university used to share its GPL sources for the benefit of paper
verification and (getting referenced by) follow-up projects, be it on
proceedings CDs or via download.

Regards,
Andreas

-- 
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

Re: [Qemu-devel] HQEMU :Violations of the GPLLicenses?

[Lb peace]

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 In fact I do ask them for anything(binaries /source codes/diff to QEMU) to
verify their result,but I have got no any reply from their funny
group.Maybe I should write comments to the journal (and) to request sth.
for verifing.Or someone in their group can see this letter in maillist.
Many papers said they can acclerate QEMU in a huge boost.(20x,e.g.)I read
their papers carefully in order to find codes which are changed in their
work.Let's take this paper for example. they published their work first on
CGO'12(HQEMU: A Multi-Threaded and Retargetable Dynamic Binary Translator
on Multicores).In their work,a counter was added in every basic block to
detect hot traces.It's funny that they put this counter in their final
codes as they said.They told us that HQEMU runs faster than QEMU.I myself
added a counter just like theirs only for profiling.QEMU would run very
very slow after putting a counter in every block . So I wanted to know how
they overcome this. After waiting for 2 years,I found this paper published
on I3E Trans. So I asked for sth. to verify again but still no reply....


2014-06-26 19:09 GMT+08:00 Andreas Färber <afaerber@suse.de>:

> Hi,
>
> Am 25.06.2014 16:05, schrieb Lb peace:
> > Efficient and retargetable dynamic binary translation on multicores
> > Author:Ding-Yong Hong; Jan-Jan Wu; Pen-Chung Yew; Wei-Chung Hsu;
> > Chun-Chen Hsu; Pangfeng Liu; Chien-Min Wang; Yeh-Ching Chung
> > IEEE Transactions on Parallel and Distributed Systems
> > DOI: 10.1109/TPDS.2013.56
> > Year: March 2014
> >
> > --------
> > As mentioned in this article，HQEMU is based on QEMU,which is realesd
> > under the GPL license.But you cannot find any line of its source codes.
> > Is this group‘s behavior  a violation of the GPL Licenses?
>
> In general, if you want legal advice, talk to lawyers. :)
> You're unlikely to find any on a development mailing list.
>
> But you can read through the GPL version 2.0 yourself, in particular
> section 3:
> http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
>
> So, before you ask about GPL "violations", have you simply contacted
> them by email and asked nicely whether they will provide you with the
> sources matching that paper? As Peter says, if you don't have the
> binaries, you have no legal right under the GPL to obtain the sources of
> random software, but they might still do so. At least my former
> university used to share its GPL sources for the benefit of paper
> verification and (getting referenced by) follow-up projects, be it on
> proceedings CDs or via download.
>
> Regards,
> Andreas
>
> --
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
> GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
>

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