From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Weinberger <richard@nod.at>
Subject: Re: [RFC PATCH 00/11] an introduction of library operating system
 for Linux (LibOS)
Date: Fri, 27 Mar 2015 06:52:04 +0100
Message-ID: <5514F004.7030509@nod.at>
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Cc: Hajime Tazaki <tazaki@wide.ad.jp>,
 Linux-Arch <linux-arch@vger.kernel.org>,
 Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
 Christoph Lameter <cl@linux.com>,
 Pekka Enberg <penberg@kernel.org>, David Rientjes <rientjes@google.com>,
 Joonsoo Kim <iamjoonsoo.kim@lge.com>,
 Andrew Morton <akpm@linux-foundation.org>,
 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
 "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
 "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
 Linux MM <linux-mm@kvack.org>, Jeff Dike <jdike@addtoit.com>,
 mathieu.lacage@gmail.com
To: Geert Uytterhoeven <geert@linux-m68k.org>,
 Rusty Russell <rusty@rustcorp.com.au>
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Am 27.03.2015 um 04:49 schrieb Geert Uytterhoeven:
> On Fri, Mar 27, 2015 at 4:31 AM, Rusty Russell <rusty@rustcorp.com.au> wrote:
>> Richard Weinberger <richard@nod.at> writes:
>>> This also infers that arch/lib will be broken most of the time as
>>> every time the networking stack references a new symbol it
>>> has to be duplicated into arch/lib.
>>>
>>> But this does not mean that your idea is bad, all I want to say that
>>> I'm not sure whether arch/lib is the right approach.
>>> Maybe Arnd has a better idea.
>>
>> Exactly why I look forward to getting this in-tree.  Jeremy Kerr and I
>> wrote nfsim back in 2005(!) which stubbed around the netfilter
>> infrastructure; with failtest and valgrind it found some nasty bugs.  It
>> was too much hassle to maintain out-of-tree though :(
>>
>> I look forward to a flood of great bugfixes from this work :)
> 
> IIRC, the ability to run UML under valgrind was also one of its key features?
> And that's not limited to networking.

Sadly this feature went never mainline. You needed a rather invading patch
for both Linux and valgrind.

But now with KASan we have a much more powerful feature to find issues.

Thanks,
//richard

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