Re: [Qemu-devel] [PATCH v2 0/5] Drop support for Xen 4.1 and older from qemu-xen

[Stefano Stabellini]

On Wed, 10 Feb 2016, Ian Campbell wrote:
> This is most easily explained by the commit log of the first patch:
> 
>     Xen 4.2 become unsupported upstream in 09/2015 (see
>     http://wiki.xen.org/wiki/Xen_Release_Features). However as far as the
>     interfaces provided by the toolstack libraries go 4.2 and 4.3 are
>     indistinguishable.
>     
>     Therefore drop support for Xen 4.1 and earlier which removes a whole
>     pile of compatibility code which makes future work (to use stable
>     library interfaces provided by upstream) more difficult. In particular
>     all supported versions now use a pointer as a libxc handle (4.1 and
>     earlier used an integer, resulting in various shim layers).
>     
>     Also Xen 4.2 was the first version of Xen to formally support upstream
>     QEMU (as a preview) so that makes sense as a cut-off now.
> 
> The rest of the patches are just further cleanups which become possible.

I committed this series to my "next" branch.