Message-ID: <f53f84b5-9da7-0726-2e1f-f7e81e8ecd24@gmail.com>
Date:   Mon, 6 Mar 2023 15:57:28 +0700
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Subject: Re: [PATCH v3] docs: describe how to quickly build a trimmed kernel
To:     Thorsten Leemhuis <linux@leemhuis.info>,
        Jonathan Corbet <corbet@lwn.net>
Cc:     Randy Dunlap <rdunlap@infradead.org>,
        Lukas Bulwahn <lukas.bulwahn@gmail.com>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        regressions@lists.linux.dev
References: <1a788a8e7ba8a2063df08668f565efa832016032.1678021408.git.linux@leemhuis.info>
 <ZAVp6jdeWzYcisUO@debian.me>
 <3d6a30ee-f093-f5b6-a193-cd86320f9452@leemhuis.info>
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From:   Bagas Sanjaya <bagasdotme@gmail.com>
In-Reply-To: <3d6a30ee-f093-f5b6-a193-cd86320f9452@leemhuis.info>
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On 3/6/23 12:40, Thorsten Leemhuis wrote:
>> If your distro config have ``CONFIG_IKCONFIG=y``, you can copy from
>> procfs::
>>
>>     zcat /proc/config.gz > .config
> <snipped>
> 
>> If it isn't the case, you may want to enable the aforementioned config
>> option.
> 
> That or put them in /boot/config-$(uname -r). But well, that is
> something the provider of the running kernel needs to do, so it won't
> help the reader if we mention it here.
> 
> Or do you think the guide should explain this to ensure people can
> pickup their config from there again in case they deleted their build
> artifacts? Hmmm. I currently tend to think that's not worth making the
> text longer for, as at that point it might be better to restart from
> scratch with a distro config anyway.
> 

I think it depends whether someone would pick from /proc/config.gz or
/boot/config. My kernel configuration have CONFIG_IKCONFIG=y but I
often copy the config from the latter instead, since I booted with
arbitrary kernel version when compiling two or three versions, and I
want to ensure that the config used is from correct version (i.e.
I use /boot/config-5.15.x-string to build 5.15.x+1 kernel).

Thanks.

-- 
An old man doll... just what I always wanted! - Clara