Re: [Qemu-devel] [PATCH 4/4] kvm: i386: Add classic PCI device assignment

["Andreas Färber" <afaerber@suse.de>]

Am 28.08.2012 14:57, schrieb Anthony Liguori:
> Andreas Färber <afaerber@suse.de> writes:
> 
>> Hi,
>>
>> Am 27.08.2012 08:28, schrieb Jan Kiszka:
>>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>>
>>> This adds PCI device assignment for i386 targets using the classic KVM
>>> interfaces. This version is 100% identical to what is being maintained
>>> in qemu-kvm for several years and is supported by libvirt as well. It is
>>> expected to remain relevant for another couple of years until kernels
>>> without full-features and performance-wise equivalent VFIO support are
>>> obsolete.
>>>
>>> A refactoring to-do that should be done in-tree is to model MSI and
>>> MSI-X support via the generic PCI layer, similar to what VFIO is already
>>> doing for MSI-X. This should improve the correctness and clean up the
>>> code from duplicate logic.
>>>
>>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>> ---
>>>  hw/kvm/Makefile.objs |    2 +-
>>>  hw/kvm/pci-assign.c  | 1929 ++++++++++++++++++++++++++++++++++++++++++++++++++
>>>  2 files changed, 1930 insertions(+), 1 deletions(-)
>>>  create mode 100644 hw/kvm/pci-assign.c
>> [...]
>>> diff --git a/hw/kvm/pci-assign.c b/hw/kvm/pci-assign.c
>>> new file mode 100644
>>> index 0000000..9cce02c
>>> --- /dev/null
>>> +++ b/hw/kvm/pci-assign.c
>>> @@ -0,0 +1,1929 @@
>>> +/*
>>> + * Copyright (c) 2007, Neocleus Corporation.
>>> + *
>>> + * This program is free software; you can redistribute it and/or modify it
>>> + * under the terms and conditions of the GNU General Public License,
>>> + * version 2, as published by the Free Software Foundation.
>>
>> The downside of accepting this into qemu.git is that it gets us a huge
>> blob of GPLv2-only code without history of contributors for GPLv2+
>> relicensing...
> 
> That is 100% okay.

Why? The way this is being submitted I don't see why we should treat
Jan's patch any different from a patch by IBM or Samsung where we've
asked folks to fix the license to comply with what I thought was our new
policy (it does not even contain a from-x-on-GPLv2+ notice).

If we want to get rid of qemu-kvm by pulling this in nontheless (for
which I do have sympathies from a packaging perspective) why not instead
do a git-merge from qemu-kvm so that we have the full file history at
hands inside qemu.git?

Regards,
Andreas

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