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SubjectRe: [PATCH] kconfig: use $K64BIT to set 64BIT with all*config targets
Hi Roman.

> > > > The value can be supplied on the command-line so we need to validate input.
> > >
> > > Is there a need for this?
> > Yes. We would like to set 64BIT or not in other than x86 cases.
> > And way forward was not to override ARCH as in the x86 case.
>
> Can we please can get some consistency in this?
> We have a .config file for a reason, what's wrong with using it?

We need to set a selected few values in a few cases where we do
not have a .config file.
allmodconfig for x86 for instance. We would like to generate a
32-bit and a 64-bit version.

>
> > > Please revert the K64BIT changes and use this instead.
> >
> > I will finish up your patch and target it for next merge window.
>
> Why can't this be fixed properly now? You don't even need this patch, just
> use ARCH to set 64BIT in the Kconfig as I've shown.
Because the patch is in mainline and has been tested by a lot of people
during the last week. And as the functionality is almost equal I do not
see it as a big deal to have the less-perfect solution in one kernel release.

And the only reason the patch were applied to mainline was to fix the build
of the merged x86 architecute - otherwise it was in no way -rc material.
>
> > > These are two different uses, when reading a .config only the basic syntax
> > > is checked, but not the value itself.
> > This is wrong considering the amount of people that hand edit the .config file.
>
> It's not, the actual symbol value is set later depending on the dependency
> constraints.
My point is that the .config file is handedited so the syntax should be checked
to best possible extent. If someone specify CONFIG_64BIT=64 we should error out.

Sam
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