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To: Edward Wingate <edwingate8@gmail.com>
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From: Bruce Ashfield <bruce.ashfield@windriver.com>
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Date: Fri, 30 Oct 2015 08:39:13 -0400
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Cc: Paul Eggleton <paul.eggleton@linux.intel.com>,
	"yocto@yoctoproject.org" <yocto@yoctoproject.org>
Subject: Re: kernel defconfig configuration
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On 15-10-29 03:06 PM, Edward Wingate wrote:
> On Thu, Oct 29, 2015 at 6:10 AM, Bruce Ashfield
> <bruce.ashfield@windriver.com> wrote:
>> That's the kernel's configuration subsystem at play, it still has to
>> process the the defconfig (which was placed as .config before starting
>> the kernel build). Invalid options are removed, others are selected
>> by Kconfigs, etc. So what you end up with is the processed .config and
>> your old one in .config.old.
>
> Ah, OK, it's possible the option I wanted (CONFIG_REMOTEPROC) is not
> available for my machine (imx6/wandboard) and so removed.  Where can I
> look to see if a config option is valid for a particular
> machine/architecture?

I'm working on some patches that will show you that as part of the
configuration audit task (there's potentially a library I can
leverage) .. but for now, either looking at the Kconfig's or running
menuconfig are the best (brute force) way to find what is missing.

Bruce

>
> Thanks for the help.
>