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xen: drop support for Xen 4.1 and older.

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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.

This change drops all the configure-y and resulting ifdefs in a mostly
mechanical way. A follow up will refactor wrappers which are now
unused.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Ian Campbell 2016-02-10 11:07:01 +00:00 • committed by Stefano Stabellini
parent f075c89f0a
commit edfb07ed22
5 changed files with 7 additions and 267 deletions
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4
include/hw/xen/xen.h
View file

@ -48,8 +48,4 @@ void xen_modified_memory(ram_addr_t start, ram_addr_t length);
void xen_register_framebuffer(struct MemoryRegion *mr);
#if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
# define HVM_MAX_VCPUS 32
#endif
#endif /* QEMU_HW_XEN_H */