[PATCH] powerpc: Add basic support for POWER9 sans hwcap.

[Peter Bergner]

On Wed, 2015-12-23 at 10:18 -0200, Tulio Magno Quites Machado Filho wrote:
> Peter Bergner <bergner@vnet.ibm.com> writes:
> > I have no problems with this being committed, but I do ask that
> > if we cannot get the HWCAP bits settled (waiting on the kernel
> > people) before the next glibc release, that we back this out
> > before the release.  I don't think having the AT_PLATFORM and
> > AT_HWCAP/AT_HWCAP2 masks out of sync is a good thing for the
> > release.
> 
> Could you elaborate more on why do you think this isn't a good thing for the
> release, please?

I don't want us to get into the situation where the user can do a
__builtin_cpu_is ("power9") that returns true and which implies a
certain feature(s) (eg, IEEE 128), but the __builtin_cpu_supports (...)
returns false for something that should be there on POWER9.

Peter