Re: [Xen-devel] [PATCH 3.4] xen-netback: allow changing the MAC address of the interface

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On Fri, Jun 06, 2014 at 09:12:20PM +0100, Andrew Cooper wrote:
> On 06/06/14 21:02, Daniel Kiper wrote:
> > On Fri, Jun 06, 2014 at 06:56:23AM -0700, Greg KH wrote:
> >> On Fri, Jun 06, 2014 at 03:04:17PM +0200, Daniel Kiper wrote:
> >>> On Thu, Jun 05, 2014 at 04:14:58PM -0700, Greg KH wrote:
> >>>> On Thu, Jun 05, 2014 at 02:58:44PM -0700, David Miller wrote:
> >>>>> From: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
> >>>>> Date: Mon,  2 Jun 2014 21:46:20 +0200
> >>>>>
> >>>>>> From: Matt Wilson <msw@xxxxxxxxxx>
> >>>>>>
> >>>>>> Sometimes it is useful to be able to change the MAC address of the
> >>>>>> interface for netback devices. For example, when using ebtables it may
> >>>>>> be useful to be able to distinguish traffic from different interfaces
> >>>>>> without depending on the interface name.
> >>>>>>
> >>>>>> Reported-by: Nikita Borzykh <sample.n@xxxxxxxxx>
> >>>>>> Reported-by: Paul Harvey <stockingpaul@xxxxxxxxxxx>
> >>>>>> Cc: netdev@xxxxxxxxxxxxxxx
> >>>>>> Cc: xen-devel@xxxxxxxxxxxxx
> >>>>>> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> >>>>>> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> >>>>>> Signed-off-by: Matt Wilson <msw@xxxxxxxxxx>
> >>>>>> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> >>>>>> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> >>>>>> (cherry picked from commit 4a633a602c26497b8285a202830829d3be007c7b)
> >>>>>>
> >>>>>> Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
> >>>>>> Tested-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
> >>>>>> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> >>>>> I don't think this is suitable for -stable.
> >>>>>
> >>>>> -stable should be restricted bug fixes for things that either
> >>>>> are extremely serious, or hit a very huge segment of the user
> >>>>> base.
> >>>>>
> >>>>> This issue does not quality for either condition.
> >>>> Yeah, it seems like a new feature to me, I'll drop it from my to-apply
> >>>> queue.
> >>> Yes, in fact it is, however, without it toolstack pollute /var/log/xen/xen-hotplug.log
> >>> with "RTNETLINK answers: Operation not supported" error when every domain is started.
> >>> Additionally, it is simple two liner and it should not break anything (Konrad and
> >>> I did some tests and everything looks OK). I do not mention that from time to time
> >>> we add some features like support for new hardware with just new device ID (e.g.
> >>> USB devices). So that is why I decided to post this patch to stable.
> >> New device ids and quirks to existing drivers are valid stable patches
> >> (see Documentation/stable_kernel_rules.txt), but new features usually
> >> are not.
> > There is something like that:
> >  - It must fix a problem that causes a build error (but not for things
> >    marked CONFIG_BROKEN), an oops, a hang, data corruption, a real
> >    security issue, or some "oh, that's not good" issue.  In short,
> >    something critical.
> >
> > I think that this is "oh, that's not good" issue type. Of course it
> > is not so critical but a bit annoying. Hence, could we have it in 3.4
> > or "NO" is your the last word in that case?
> >
> > Daniel
>
> The phrase "oh, that's not good" is usually said with a very distinctive
> tone of voice, and has an habit of attracting a crowd of developers when
> uttered in an office setting.
>
> Its implied meaning is quite far from its literal meaning.

Got it... ;-)))

Daniel
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