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[Xen-devel] xen: how does XEN_PRIVILEGED_GUEST work?

0) The Kconfig symbol XEN_PRIVILEGED_GUEST got added to the mainline
Linux repository in v2.6.37. It has never been used. It has always been
a nop.

1) Its Kconfig entry is preceded with this comment:
    # Dummy symbol since people have come to rely on the PRIVILEGED_GUEST
    # name in tools.

What does that mean?

2) On a related note: can anyone please explain commit
7c1bfd685bcdc822ab1d7411ea05c82bd2a7b260 ("xen/pci: Fix compiler error
when CONFIG_XEN_PRIVILEGED_GUEST is not set.") and commit
c00c8aa2d976e9ed1d12a57b42d6e9b27efb7abe ("xen/trace: Fix compile error
when CONFIG_XEN_PRIVILEGED_GUEST is not set"). Do they perhaps fix
problems in code not mainlined?

Paul Bolle

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