On Thu, Aug 22, 2024 at 09:13:21AM +0200, Christophe Leroy wrote:

Architectures use different location for vDSO sources:
	arch/mips/vdso
	arch/sparc/vdso
	arch/arm64/kernel/vdso
	arch/riscv/kernel/vdso
	arch/csky/kernel/vdso
	arch/x86/um/vdso
	arch/x86/entry/vdso
	arch/powerpc/kernel/vdso
	arch/arm/vdso
	arch/loongarch/vdso

Don't hard-code vdso sources location in selftest Makefile,
instead create a vdso/ symbolic link in tools/arch/$arch/ and
update Makefile accordingly.

That seems like a good way of handling it. As archs add their
implementations, they can just add the symlink and do no more work. It
will also make review slightly easier: if I don't see the symlink added,
I'll know the submitter didn't actually test their chacha :-P.

I'll take this into my random.git tree now as a fix.

Jason