Re: [Qemu-devel] State of KVM bits in linux-headers

[Anthony Liguori]

On 01/11/2012 02:05 PM, Alexander Graf wrote:
> On 11.01.2012, at 20:59, Anthony Liguori wrote:
>
> > On 01/11/2012 01:53 PM, Alexander Graf wrote:
> > > On 11.01.2012, at 20:52, Anthony Liguori wrote:
> > >
> > > > > IIRC, we never had this problem with qemu-kvm - as the merges were
> > > > > coordinated with the kernel (subsystem) tree.
> > > >
> > > > Are you suggesting that kvm header updates go through uq/master?  That seems 
> > > > reasonable to me and is certainly the least amount of change.
> > >
> > > So how about code that actually leverages the new headers?
> >
> > Shared KVM infrastructure should go through uq/master.  So changes to 
> > kvm-all.c, linux-headers/* should go through uq/master.
> >
> > Target specific kvm changes should go through the appropriate submaintainers 
> > tree.
>
> So then if I add some target specific stuff to KVM,

That requires a header update?

> I have to
>
>    * send pullreq to KVM
>    * wait for that to be applied
>    * post a patch to uq/master to update headers

Strictly from a QEMU perspective, we can't depend on APIs that aren't committed 
upstream yet.

>    * wait for that to merge back to qemu.git
>    * send a pull request to qemu.git

Maybe we need to bring a stripped down version of Linux into qemu.git to make it 
easier to simultaneously update both trees... ;-)

> right? And then after about 3 months we'll have the feature available ;).

You can always just get Acked-by's from the appropriate maintainers.  That's 
just as good as going through the tree.

Regards,

Anthony Liguori

> Alex