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[Qemu-devel] [PATCH 0/5] Drop support for Xen 4.1 and older from qemu-xe
From: |
Ian Campbell |
Subject: |
[Qemu-devel] [PATCH 0/5] Drop support for Xen 4.1 and older from qemu-xen |
Date: |
Tue, 9 Feb 2016 16:16:55 +0000 |
This is most easily explained by the commit log of the first patch:
Xen 4.2 become unsupported upstream in 09/2105 (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.