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From: "Andreas Färber" <afaerber@suse.de>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Avi Kivity <avi@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	qemu-devel@nongnu.org, Blue Swirl <blauwirbel@gmail.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [PATCH v3 4/4] kvm: i386: Add classic PCI device assignment
Date: Thu, 06 Sep 2012 18:06:42 +0200	[thread overview]
Message-ID: <5048CA12.8060200@suse.de> (raw)
In-Reply-To: <5048625F.2060706@siemens.com>

Am 06.09.2012 10:44, schrieb Jan Kiszka:
> On 2012-08-30 20:30, Jan Kiszka wrote:
>> 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>
>> ---
>>
>> Changes in v3:
>>  - addressed comment by Peter (changed device name to kvm-pci-assign +
>>    alias)
>>  - addressed (most) comments by Michael
>>  - fixed INT pin regression
> 
> Does someone _disagree_ that there are no open (and reasonably solvable)
> issues and that this can now be merged through uq/master?

My implicit suggestion was to add a notice that new patch contributions
to the file from date yyyy-mm-dd on would be declared GPLv2+, as Paolo
has done elsewhere. That would limit the amount of people to ask for a
potential relicensing attempt.

For the record, Anthony explained on IRC that the code originated from
Xen originally and thus qemu-kvm.git does not contain the full history
anyway and that pulling in the Mercurial file history and replaying the
KVM history on top was too difficult, therefore this patch with a single
SoB by Jan.

Andreas

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

WARNING: multiple messages have this Message-ID (diff)
From: "Andreas Färber" <afaerber@suse.de>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	qemu-devel@nongnu.org, Blue Swirl <blauwirbel@gmail.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v3 4/4] kvm: i386: Add classic PCI device assignment
Date: Thu, 06 Sep 2012 18:06:42 +0200	[thread overview]
Message-ID: <5048CA12.8060200@suse.de> (raw)
In-Reply-To: <5048625F.2060706@siemens.com>

Am 06.09.2012 10:44, schrieb Jan Kiszka:
> On 2012-08-30 20:30, Jan Kiszka wrote:
>> 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>
>> ---
>>
>> Changes in v3:
>>  - addressed comment by Peter (changed device name to kvm-pci-assign +
>>    alias)
>>  - addressed (most) comments by Michael
>>  - fixed INT pin regression
> 
> Does someone _disagree_ that there are no open (and reasonably solvable)
> issues and that this can now be merged through uq/master?

My implicit suggestion was to add a notice that new patch contributions
to the file from date yyyy-mm-dd on would be declared GPLv2+, as Paolo
has done elsewhere. That would limit the amount of people to ask for a
potential relicensing attempt.

For the record, Anthony explained on IRC that the code originated from
Xen originally and thus qemu-kvm.git does not contain the full history
anyway and that pulling in the Mercurial file history and replaying the
KVM history on top was too difficult, therefore this patch with a single
SoB by Jan.

Andreas

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

  parent reply	other threads:[~2012-09-06 16:06 UTC|newest]

Thread overview: 146+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-27  6:28 [PATCH 0/4] uq/master: Add classic PCI device assignment Jan Kiszka
2012-08-27  6:28 ` [Qemu-devel] " Jan Kiszka
2012-08-27  6:28 ` [PATCH 1/4] kvm: Introduce kvm_irqchip_update_msi_route Jan Kiszka
2012-08-27  6:28   ` [Qemu-devel] " Jan Kiszka
2012-08-27  6:28 ` [PATCH 2/4] kvm: Introduce kvm_has_intx_set_mask Jan Kiszka
2012-08-27  6:28   ` [Qemu-devel] " Jan Kiszka
2012-08-27  6:28 ` [PATCH 3/4] kvm: i386: Add services required for PCI device assignment Jan Kiszka
2012-08-27  6:28   ` [Qemu-devel] " Jan Kiszka
2012-08-27  6:28 ` [PATCH 4/4] kvm: i386: Add classic " Jan Kiszka
2012-08-27  6:28   ` [Qemu-devel] " Jan Kiszka
2012-08-27 12:07   ` Andreas Färber
2012-08-27 12:07     ` Andreas Färber
2012-08-27 12:15     ` Jan Kiszka
2012-08-27 12:15       ` [Qemu-devel] " Jan Kiszka
2012-08-28 21:26       ` Peter Maydell
2012-08-28 21:26         ` [Qemu-devel] " Peter Maydell
2012-08-29  8:47         ` Jan Kiszka
2012-08-29  8:47           ` [Qemu-devel] " Jan Kiszka
2012-08-29  8:49           ` Peter Maydell
2012-08-29  8:49             ` Peter Maydell
2012-08-29  8:50             ` Jan Kiszka
2012-08-29  8:50               ` Jan Kiszka
2012-09-03 15:59             ` Avi Kivity
2012-09-03 15:59               ` Avi Kivity
2012-09-04  3:31               ` Alex Williamson
2012-09-04  3:31                 ` [Qemu-devel] " Alex Williamson
2012-08-28 12:57     ` Anthony Liguori
2012-08-28 12:57       ` Anthony Liguori
2012-08-29 14:08       ` Andreas Färber
2012-08-29 14:08         ` Andreas Färber
2012-08-29 18:32         ` Anthony Liguori
2012-08-29 18:32           ` [Qemu-devel] " Anthony Liguori
2012-09-04 21:00         ` Anthony Liguori
2012-09-04 21:00           ` [Qemu-devel] " Anthony Liguori
2012-09-05 15:26           ` Avi Kivity
2012-09-05 15:26             ` [Qemu-devel] " Avi Kivity
2012-09-05 15:29             ` Michael S. Tsirkin
2012-09-05 15:29               ` Michael S. Tsirkin
2012-09-05 15:41             ` Anthony Liguori
2012-09-05 15:41               ` Anthony Liguori
2012-09-05 15:52               ` Avi Kivity
2012-09-05 15:52                 ` Avi Kivity
2012-09-05 19:04               ` Blue Swirl
2012-09-05 19:04                 ` Blue Swirl
2012-09-05 19:22                 ` Anthony Liguori
2012-09-05 19:22                   ` Anthony Liguori
2012-09-05 19:38                   ` Blue Swirl
2012-09-05 19:38                     ` Blue Swirl
2012-09-05 20:46                     ` Anthony Liguori
2012-09-05 20:46                       ` [Qemu-devel] " Anthony Liguori
2012-09-10 15:33                       ` Andreas Färber
2012-09-10 15:33                         ` Andreas Färber
2012-09-06  3:42                     ` [Qemu-ppc] " Alexander Graf
2012-09-06  3:42                       ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2012-09-08  7:54                       ` [Qemu-ppc] [Qemu-devel] " Blue Swirl
2012-09-08  7:54                         ` [Qemu-devel] [Qemu-ppc] " Blue Swirl
2012-09-05 19:24                 ` Eric Blake
2012-09-05 19:24                   ` [Qemu-devel] " Eric Blake
2012-09-05 19:43                   ` Blue Swirl
2012-09-05 19:43                     ` Blue Swirl
2012-09-06  8:44                 ` Avi Kivity
2012-09-06  8:44                   ` Avi Kivity
2012-09-08  8:06                   ` Blue Swirl
2012-09-08  8:06                     ` [Qemu-devel] " Blue Swirl
2012-09-08  9:28                     ` [Qemu-ppc] " Alexander Graf
2012-09-08  9:28                       ` [Qemu-devel] " Alexander Graf
2012-09-08 10:16                       ` [Qemu-ppc] [Qemu-devel] " Blue Swirl
2012-09-08 10:16                         ` [Qemu-devel] [Qemu-ppc] " Blue Swirl
2012-09-08 12:13                         ` Alexander Graf
2012-09-08 12:13                           ` [Qemu-devel] " Alexander Graf
2012-09-08 12:30                           ` Blue Swirl
2012-09-08 12:30                             ` [Qemu-devel] " Blue Swirl
2012-09-08 14:59                             ` Alexander Graf
2012-09-08 14:59                               ` [Qemu-devel] " Alexander Graf
2012-08-27 18:56   ` Blue Swirl
2012-08-27 18:56     ` [Qemu-devel] " Blue Swirl
2012-08-27 19:01     ` Michael S. Tsirkin
2012-08-27 19:01       ` Michael S. Tsirkin
2012-08-27 19:06       ` Blue Swirl
2012-08-27 19:06         ` [Qemu-devel] " Blue Swirl
2012-08-28  0:30     ` Jan Kiszka
2012-08-28  0:30       ` Jan Kiszka
2012-09-03 16:06       ` Avi Kivity
2012-09-03 16:06         ` Avi Kivity
2012-08-28  7:35     ` Michael Tokarev
2012-08-28  7:35       ` Michael Tokarev
2012-08-28 17:01       ` Blue Swirl
2012-08-28 17:01         ` Blue Swirl
2012-08-28 17:28         ` Michael S. Tsirkin
2012-08-28 17:28           ` Michael S. Tsirkin
2012-08-28 17:38           ` Blue Swirl
2012-08-28 17:38             ` Blue Swirl
2012-08-28 19:31             ` Anthony Liguori
2012-08-28 19:31               ` [Qemu-devel] " Anthony Liguori
2012-08-28 19:49               ` malc
2012-08-28 19:49                 ` [Qemu-devel] " malc
2012-08-28 20:06               ` Blue Swirl
2012-08-28 20:06                 ` Blue Swirl
2012-08-28 21:51                 ` Anthony Liguori
2012-08-28 21:51                   ` Anthony Liguori
2012-09-01  9:20                   ` Blue Swirl
2012-09-01  9:20                     ` [Qemu-devel] " Blue Swirl
2012-08-29  8:27               ` Markus Armbruster
2012-08-29  8:27                 ` [Qemu-devel] " Markus Armbruster
2012-09-03 16:14                 ` Avi Kivity
2012-09-03 16:14                   ` [Qemu-devel] " Avi Kivity
2012-09-03 19:32                   ` Blue Swirl
2012-09-03 19:32                     ` [Qemu-devel] " Blue Swirl
2012-09-04  8:32                     ` Avi Kivity
2012-09-04  8:32                       ` Avi Kivity
2012-09-04 19:27                       ` Blue Swirl
2012-09-04 19:27                         ` Blue Swirl
2012-09-04 21:28                         ` Michael S. Tsirkin
2012-09-04 21:28                           ` [Qemu-devel] " Michael S. Tsirkin
2012-09-05 19:09                           ` Blue Swirl
2012-09-05 19:09                             ` Blue Swirl
2012-08-28 11:02   ` [PATCH v2 " Jan Kiszka
2012-08-28 11:02     ` [Qemu-devel] " Jan Kiszka
2012-08-28 21:49     ` Michael S. Tsirkin
2012-08-28 21:49       ` [Qemu-devel] " Michael S. Tsirkin
2012-08-29  8:44       ` Jan Kiszka
2012-08-29  8:44         ` [Qemu-devel] " Jan Kiszka
2012-08-29 10:35         ` Michael S. Tsirkin
2012-08-29 10:35           ` [Qemu-devel] " Michael S. Tsirkin
2012-08-30 18:30     ` [PATCH v3 " Jan Kiszka
2012-08-30 18:30       ` [Qemu-devel] " Jan Kiszka
2012-09-06  8:44       ` Jan Kiszka
2012-09-06  8:44         ` [Qemu-devel] " Jan Kiszka
2012-09-06  8:49         ` Michael S. Tsirkin
2012-09-06  8:49           ` [Qemu-devel] " Michael S. Tsirkin
2012-09-06 16:06         ` Andreas Färber [this message]
2012-09-06 16:06           ` Andreas Färber
2012-09-06 16:16           ` Jan Kiszka
2012-09-06 16:16             ` [Qemu-devel] " Jan Kiszka
2012-09-08  7:55           ` Blue Swirl
2012-09-08  7:55             ` [Qemu-devel] " Blue Swirl
2012-09-09 14:13         ` Avi Kivity
2012-09-09 14:13           ` [Qemu-devel] " Avi Kivity
2012-09-10  9:26           ` Jan Kiszka
2012-09-10  9:26             ` [Qemu-devel] " Jan Kiszka
2012-09-10 12:30             ` Avi Kivity
2012-09-10 12:30               ` [Qemu-devel] " Avi Kivity
2012-08-28 15:04   ` [PATCH " Michael S. Tsirkin
2012-08-28 15:04     ` [Qemu-devel] " Michael S. Tsirkin
2012-08-29 10:50     ` Jan Kiszka
2012-08-29 10:50       ` [Qemu-devel] " Jan Kiszka

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