From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Dmitri Monakhov <dmonakhov@openvz.org>
Cc: Izik Eidus <ieidus@redhat.com>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, kvm@vger.kernel.org, aarcange@redhat.com,
chrisw@redhat.com, avi@redhat.com, dlaor@redhat.com,
kamezawa.hiroyu@jp.fujitsu.com, cl@linux-foundation.org,
corbet@lwn.net
Subject: Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v2
Date: Fri, 28 Nov 2008 13:51:25 +0000 [thread overview]
Message-ID: <20081128135125.1ee31684@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <m33ahcc8kh.fsf@dmon-lap.sw.ru>
> You have implemented second one, but seems it already was patented
> http://www.google.com/patents?vid=USPAT6789156
> I'm not a lawyer but IMHO we have direct conflict here.
> >From other point of view they have patented the WEEL, but at least we
> have to know about this.
Its an old idea and appeared for Linux in March 1998: Little project from
Philipp Reisner called "mergemem".
http://groups.google.com/group/muc.lists.linux-kernel/browse_thread/thread/387af278089c7066?ie=utf-8&oe=utf-8&q=share+identical+pages#b3d4f68fb5dd4f88
so if there is a patent which is relevant (and thats a question for
lawyers and legal patent search people) perhaps the Linux Foundation and
some of the patent busters could take a look at mergemem and
re-examination.
Alan
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next prev parent reply other threads:[~2008-11-28 13:51 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-17 2:20 Izik Eidus
2008-11-17 2:20 ` [PATCH 1/4] Rmap: Add page_wrprotect() function Izik Eidus
2008-11-17 2:20 ` [PATCH 2/4] Add replace_page(): change the page pte is pointing to Izik Eidus
2008-11-17 2:20 ` [PATCH 3/4] add ksm kernel shared memory driver Izik Eidus
2008-11-17 2:20 ` [PATCH 4/4] MMU_NOTIFIRES: add set_pte_at_notify() Izik Eidus
2008-11-28 16:58 ` [PATCH 3/4] add ksm kernel shared memory driver Alan Cox
2008-12-02 18:07 ` Chris Wright
2008-12-02 18:13 ` Alan Cox
2008-12-02 21:24 ` Chris Wright
2008-12-02 21:37 ` Jonathan Corbet
2008-12-02 22:10 ` Alan Cox
2008-12-03 14:33 ` Pavel Machek
2008-12-04 9:48 ` Alan Cox
2008-11-20 7:44 ` [PATCH 0/4] ksm - dynamic page sharing driver for linux v2 Ryota OZAKI
2008-11-20 9:03 ` Izik Eidus
2008-11-20 9:13 ` Izik Eidus
2008-11-20 9:44 ` Ryota OZAKI
2008-11-28 12:57 ` Dmitri Monakhov
2008-11-28 13:51 ` Alan Cox [this message]
2009-04-04 14:35 Izik Eidus
2009-04-06 7:04 ` Nick Piggin
2009-04-06 7:33 ` Avi Kivity
2009-04-06 11:19 ` Izik Eidus
2009-04-06 13:42 ` Andrea Arcangeli
2009-04-07 13:57 ` Andrea Arcangeli
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