linux-kernel - Re: [RFC PATCH 00/11] an introduction of library operating system for Linux (LibOS)

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Message-ID: <551164ED.5000907@nod.at>
Date:	Tue, 24 Mar 2015 14:21:49 +0100
From:	Richard Weinberger <richard@....at>
To:	Hajime Tazaki <tazaki@....wide.ad.jp>, linux-arch@...r.kernel.org
CC:	Arnd Bergmann <arnd@...db.de>, Jonathan Corbet <corbet@....net>,
	Jhristoph Lameter <cl@...ux.com>,
	Jekka Enberg <penberg@...nel.org>,
	Javid Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Jndrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	netdev@...r.kernel.org, linux-mm@...ck.org,
	Jeff Dike <jdike@...toit.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Mathieu Lacage <mathieu.lacage@...il.com>
Subject: Re: [RFC PATCH 00/11] an introduction of library operating system
 for Linux (LibOS)

Am 24.03.2015 um 14:10 schrieb Hajime Tazaki:
 > == More information ==
> 
> The crucial difference between UML (user-mode linux) and this approach
> is that we allow multiple network stack instances to co-exist within a
> single process with dlmopen(3) like linking for easy debugging.

Is this the only difference?
We already have arch/um, why do you need arch/lib/ then?
My point is, can't you merge your arch/lib into the existing arch/um stuff?
>From a very rough look your arch/lib seems like a micro UML.

BTW: There was already an idea for having UML as regular library.
See: http://user-mode-linux.sourceforge.net/old/projects.html
"UML as a normal userspace library"

Thanks,
//richard
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