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Date:   Wed, 9 Sep 2020 13:14:00 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Ingo Molnar <mingo@kernel.org>
Cc:     Masahiro Yamada <masahiroy@kernel.org>,
        Arnaud Lacombe <lacombar@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
        linux-kernel@vger.kernel.org,
        Jarkko Nikula <jarkko.nikula@linux.intel.com>,
        Tony Luck <tony.luck@intel.com>
Subject: Re: [PATCH v1] x86/defconfigs: Unbreak 32-bit defconfig builds
Message-ID: <20200909101400.GK1891694@smile.fi.intel.com>
References: <20200908100018.50188-1-andriy.shevchenko@linux.intel.com>
 <20200908121354.GA3848343@gmail.com>
 <20200908134350.GX1891694@smile.fi.intel.com>
 <20200909080020.GA2437694@gmail.com>
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On Wed, Sep 09, 2020 at 10:00:20AM +0200, Ingo Molnar wrote:
> * Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
> > On Tue, Sep 08, 2020 at 02:13:54PM +0200, Ingo Molnar wrote:
> > > * Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

...

> > uname => x86_64
> > make i386_defconfig
> > 
> > It was very convenient to not supply ARCH when build on multi-arch host.
> 
> Nice, TIL about the extended 'make *config' targets. :-)
> 
> Curiously, they aren't even mentioned in the 'configuration targets' 
> section of 'make help' and are not discoverable unless you know their 
> locations.
> 
> Anyway, your fix makes sense now to me too.

I see you applied original patch from Daniel.

> Do we need a similar for x86_64 defconfig, when built on 32-bit hosts? (not 
> that anyone does that in practice, but just for completeness.)

I never heard about such use, I consider it more academic rather than
practical.

> Also, it would be nice if there was a way to annotate the defconfig for 
> 'make savedefconfig' preserved these ARCH choices - it currently strips out 
> all non-enabled options that match their default configuration value.

Hmm... Yes, perhaps it would be nice to have such an exception.

-- 
With Best Regards,
Andy Shevchenko