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

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 10 Feb 2016, Ian Campbell wrote:
> This is most easily explained by the commit log of the first patch:
>
> Â Â Xen 4.2 become unsupported upstream in 09/2015 (see
> ÂÂÂÂhttp://wiki.xen.org/wiki/Xen_Release_Features). However as far as the
> ÂÂÂÂinterfaces provided by the toolstack libraries go 4.2 and 4.3 are
> ÂÂÂÂindistinguishable.
> ÂÂÂÂ
> ÂÂÂÂTherefore drop support for Xen 4.1 and earlier which removes a whole
> ÂÂÂÂpile of compatibility code which makes future work (to use stable
> ÂÂÂÂlibrary interfaces provided by upstream) more difficult. In particular
> ÂÂÂÂall supported versions now use a pointer as a libxc handle (4.1 and
> ÂÂÂÂearlier used an integer, resulting in various shim layers).
> ÂÂÂÂ
> ÂÂÂÂAlso Xen 4.2 was the first version of Xen to formally support upstream
> ÂÂÂÂQEMU (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.

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