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Date:   Thu, 7 Mar 2019 02:22:53 +0100
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Daniel Colascione <dancol@...gle.com>,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Pavel Machek <pavel@....cz>,
        Joel Fernandes <joel@...lfernandes.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>, ast@...nel.org,
        atish patra <atishp04@...il.com>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
        Jan Kara <jack@...e.cz>, Jonathan Corbet <corbet@....net>,
        Karim Yaghmour <karim.yaghmour@...rsys.com>,
        Kees Cook <keescook@...omium.org>, kernel-team@...roid.com,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Manoj Rao <linux@...ojrajarao.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>, rostedt@...dmis.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        yhs@...com
Subject: Re: [RFC] Provide in-kernel headers for making it easy to extend the
 kernel

On 07.03.19 01:33, Daniel Colascione wrote:

> *There* *may* *be* *no* *filesystem*. 

A Linux system w/o any filesystem at all ? Well, that's interesting.

> The only thing the kernel can really guarantee is its own> existence --- it should be entire in itself.

I vaguely recall some option for linking in an initrd ... does this
still exist ?

> If I'm hacking on an> Android kernel and say "fastboot boot mykernel" without making any>
changes to the device's boot filesystem, I should still be able to use>
tracing tools that rely on knowing the headers for the kernel with

Fix fastboot to support initrd or use a remote filesystem ?

I'm doing embedded development all the day, and one of the first things
I usually set up for a project is an fully automatic netboot (or at
least usb boot). Shouldn't be so hard, and is a more generic solution.


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287

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