Re: linux-next: Tree for Jul 31 - s390 crypto build breakage

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On Thu, Aug 01, 2019 at 08:28:56PM +0300, Ard Biesheuvel wrote:
> On Thu, 1 Aug 2019 at 15:28, Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote:
> > Still not... with linux-next as of today I get this (s390 defconfig):
> >
> > ERROR: "crypto_aegis128_decrypt_chunk_simd" [crypto/aegis128.ko] undefined!
> > ERROR: "crypto_aegis128_update_simd" [crypto/aegis128.ko] undefined!
> > ERROR: "crypto_aegis128_encrypt_chunk_simd" [crypto/aegis128.ko] undefined!
> > scripts/Makefile.modpost:105: recipe for target 'modules-modpost' failed
> >
> 
> Hello Heiko,
> 
> Apologies for the breakage. The first two fixes addressed obvious
> shortcomings in my code, but with this issue, I'm a bit puzzled tbh.
> The calls to these missing functions should be optimized away, since
> have_simd never gets assigned if CONFIG_CRYPTO_AEGIS128_SIMD is not
> defined, but for some reason, this isn't working. Which version of GCC
> are you using?

Plain vanilla gcc 9.1.0.

> Also, could you please try whether the patch below fixes the problem? Thanks
> https://lore.kernel.org/linux-crypto/20190729074434.21064-1-ard.biesheuvel@xxxxxxxxxx/

Yes, with that patch applied the code compiles.




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