Re: [PATCH AUTOSEL 5.4 316/350] int128: move __uint128_t compiler test to Kconfig

[Sasha Levin]

On Wed, Dec 11, 2019 at 10:07:54AM +0000, Ard Biesheuvel wrote:
> On Tue, 10 Dec 2019 at 22:13, Sasha Levin <sashal@xxxxxxxxxx> wrote:
> > From: Ard Biesheuvel <ardb@xxxxxxxxxx>
> >
> > [ Upstream commit c12d3362a74bf0cd9e1d488918d40607b62a3104 ]
> >
> > In order to use 128-bit integer arithmetic in C code, the architecture
> > needs to have declared support for it by setting ARCH_SUPPORTS_INT128,
> > and it requires a version of the toolchain that supports this at build
> > time. This is why all existing tests for ARCH_SUPPORTS_INT128 also test
> > whether __SIZEOF_INT128__ is defined, since this is only the case for
> > compilers that can support 128-bit integers.
> >
> > Let's fold this additional test into the Kconfig declaration of
> > ARCH_SUPPORTS_INT128 so that we can also use the symbol in Makefiles,
> > e.g., to decide whether a certain object needs to be included in the
> > first place.
> >
> > Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> > Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
> > Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
>
> This does not fix a bug so no need to put it in -stable

Dropped, thanks!

--
Thanks,
Sasha