Re: [PATCH 2/7] arm64: Implement copy_thread_tls

[Christian Brauner]

On Tue, Jan 07, 2020 at 10:12:39AM -0800, Kees Cook wrote:
> On Tue, Jan 07, 2020 at 05:45:09PM +0000, Will Deacon wrote:
> > On Tue, Jan 07, 2020 at 10:02:27AM +0100, Christian Brauner wrote:
> > > [Cc Kees in case he knows something about where arch specific tests live
> > >  or whether we have a framework for this]
> > > [...]
> > > It feels like we must've run into the "this is architecture
> > > specific"-and-we-want-to-test-this issue before... Do we have a place
> > > where architecture specific selftests live?
> > 
> > For arch-specific selftests there are tools/testing/selftests/$ARCH
> > directories, although in this case maybe it's better to have an #ifdef
> > in a header so that architectures with __builtin_thread_pointer can use
> > that.
> 
> Yup, I agree: that's the current best-practice for arch-specific
> selftests.

Thanks! I think using #ifdef in this case with __builtin_thread_pointer
sounds good.
So the tests can be moved into the clone3() test-suite for those
architectures.

Christian