Re: [PATCH RFC] x86: remove toolchain check for X32 ABI capability

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On Sun, Feb 28, 2021 at 3:53 PM Nathan Chancellor <nathan@xxxxxxxxxx> wrote:
>
> On Sat, Feb 27, 2021 at 11:49:36PM -0700, Nathan Chancellor wrote:
> > On Sun, Feb 28, 2021 at 12:15:16PM +0900, Masahiro Yamada wrote:
> > > On Sun, Feb 28, 2021 at 3:41 AM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote:
> > > >
> > > > This commit reverts 0bf6276392e9 ("x32: Warn and disable rather than
> > > > error if binutils too old").
> > > >
> > > > The help text in arch/x86/Kconfig says enabling the X32 ABI support
> > > > needs binutils 2.22 or later. This is met because the minimal binutils
> > > > version is 2.23 according to Documentation/process/changes.rst.
> > > >
> > > > I would not say I am not familiar with toolchain configuration, but
> > >
> > > I mean:
> > > I would not say I am familiar ...
> > > That is why I added RFC.
> > >
> > > I appreciate comments from people who are familiar
> > > with toolchains (binutils, llvm).
> > >
> > > If this change is not safe,
> > > we can move this check to Kconfig at least.
> >
> > Hi Masahiro,
> >
> > As Fangrui pointed out, there are two outstanding issues with x32 with
> > LLVM=1, both seemingly related to LLVM=1.
>                                     ^ llvm-objcopy
>
> Sigh, note to self, don't write emails while tired...
>

Fangrui, Nathan, thanks for your comments.

OK, then we still need to carry this toolchain check.


-- 
Best Regards
Masahiro Yamada



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