On 05/19/2017 11:47 AM, Juergen Gross wrote:

Add a new config item PARAVIRT_FULL. It will be used to guard the
pv_*_ops functions used by fully paravirtualized guests (Xen pv-guests
and lguest) only.

Kernels not meant to support those guest types will be able to use many
operations without paravirt abstraction while still supporting all the
other paravirt features.

For now just add the new Kconfig option and select it for XEN_PV and
LGUEST_GUEST. Add paravirt_full.c, paravirt_full.h and
paravirt_types_full.h which will contain the necessary implementation
parts of the pv guest specific paravirt functions.

Is it not possible to just 'ifdef CONFIG_PARAVIT_FULL' the (ir)relevant
parts of paravirt.[ch] and paravirt_types.c?

Separating structures and files into pv and pvfull seems somewhat
arbitrary (.flush_tlb_others in patch 8 being a good example of one type
of guest deciding to use something that normally would be considered
part of a pvfull-type structure).

-boris