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Re: [Xen-devel] [PATCH QEMU v2 2/2] xen: fix usage of xc_domain_create in domain builder

On Fri, 2015-11-13 at 13:46 +0000, Stefano Stabellini wrote:
> On Fri, 13 Nov 2015, Roger Pau Monne wrote:
> > Due to the addition of HVMlite and the requirement to always provide a
> > valid
> > xc_domain_configuration_t, xc_domain_create now always takes an arch
> > domain
> > config, which can be NULL in order to mimic previous behaviour.
> > 
> > Add a small stub called xen_domain_create that encapsulates the correct
> > call
> > to xc_domain_create depending on the libxc version detected.
> > 
> > Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
> FYI this is going to conflict with Ian's series:
> 1447070487-31229-1-git-send-email-ian.campbell@xxxxxxxxxx

The bit being patched here is disabled by
"xen: make it possible to build without the Xen PV domain builder" in that

In any case I think Roger's stuff would be better off going in first and I
can easily rebase over it.

> In addition, the patch causes a build failure against most Xen versions:
> In file included from
> /local/scratch/sstabellini/qemu/include/hw/xen/xen_backend.h:4:0,
> ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂfrom hw/block/xen_disk.c:38:
> /local/scratch/sstabellini/qemu/include/hw/xen/xen_common.h:445:37:
> error: unknown type name âxc_domain_configuration_tâ
> Â CCÂÂÂÂhw/bt/hci-csr.o
> make: *** [hw/block/xen_disk.o] Error 1

Given the only caller today passes NULL I'd suggest moving the NULL down
into the wrapper, i.e. dropping the argument from xen_domain_create.

If someone wants to resurrect the domain build in QEMU _and_ teach it to do
pvh, then they will surely be able to refactor this to suit their needs.


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