On Thu, Sep 09, 2021 at 01:06:31PM -0700, Raghavendra Rao Ananta wrote:
> On Thu, Sep 9, 2021 at 10:18 AM Mark Brown <broonie@kernel.org> wrote:

> > >  create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h

> > Can we arrange to copy this at build time rather than having a duplicate
> > copy we need to keep in sync?  We have some stuff to do this for uapi
> > headers already.

> That's a great idea actually (I wasn't aware of it). But, probably
> should've mentioned it earlier, I had a hard time compiling the header
> as is so I modified it a little bit and made the definitions of
> [write|read]_sysreg_s() similar to the ones in kvm-unit-tests.
> I'll try my best to get the original format working and try to
> implement your idea if it works.

One option would be to do something like split out the bits that can be
shared into a separate header which can be included from both places and
then have the header with the unsharable bits include that.  Something
like sysreg.h and sysreg_defs.h for example.