[ANNOUNCE] Xen x86 32-bit hypervisor end of life after 4.2

[Keir Fraser <keir.xen@gmail.com>]

Folks,

With 64-bit support well established in the x86 world these days, the number
of x86 production environments that cannot run a 64-bit hypervisor is pretty
much nil. Maintaining the 32-bit x86 port, and implementing new features for
it, is an ongoing development burden which could be more usefully directed
elsewhere. Therefore, 32-bit x86 will be considered obsolete in the 4.3
development branch, and removed.

32-bit x86 will continue to be maintained and supported (insofar as it has
been recently) in the supported stable branches: 3.4, 4.1, and 4.2.

Furthermore, 32-bit guests (including 32-bit PV guests) will continue to be
supported on the 64-bit hypervisor, as they always have been.

 Regards,
 Keir & The Xen Team