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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
hw/i386/xen/xen_apic.c
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@ -44,11 +44,7 @@ static void xen_apic_realize(DeviceState *dev, Error **errp)
s->vapic_control = 0;
memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s,
"xen-apic-msi", APIC_SPACE_SIZE);
#if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \
&& CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420
msi_supported = true;
#endif
}
static void xen_apic_set_base(APICCommonState *s, uint64_t val)