Documentation: Add a file explaining the Linux kernel license enforcement policy

This adds a short document describing the views of how the Linux kernel
community feels about enforcing the license of the kernel.
Acked-by: NAl Viro <viro@zeniv.linux.org.uk>
Acked-by: NAlex Elder (Linaro) <elder@linaro.org>
Acked-by: NAndrea Arcangeli <aarcange@redhat.com>
Acked-by: NAndy Gross <andy.gross@linaro.org>
Acked-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: NAnna Schumaker <schumaker.anna@gmail.com>
Acked-by: NArd Biesheuvel <ardb@kernel.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NArvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: NBart Van Assche <bart.vanassche@wdc.com>
Acked-by: NBhumika Goyal <bhumirks@gmail.com>
Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: NBorislav Petkov <bp@suse.de>
Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: NChuck Lever <chuck.lever@oracle.com>
Acked-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NDarrick J. Wong (Oracle) <darrick.wong@oracle.com>
Acked-by: NDarrick J. Wong <djwong@kernel.org>
Acked-by: NDavid Kershner <david.kershner@unisys.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: NDoug Ledford <dledford@redhat.com>
Acked-by: NFabio Estevam <festevam@gmail.com>
Acked-by: NFelipe Balbi <balbi@kernel.org>
Acked-by: NFlorian Westphal <fw@strlen.de>
Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NHannes Reinecke <hare@suse.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: NHeiko Stuebner <heiko@sntech.de>
Acked-by: NHeiner Kallweit <hkallweit1@gmail.com>
Acked-by: NIngo Molnar <mingo@kernel.org>
Acked-by: NIvan Safonov <insafonov@gmail.com>
Acked-by: NJaegeuk Kim <jaegeuk@kernel.org>
Acked-by: NJan Kara (SUSE) <jack@suse.cz>
Acked-by: NJavier Martinez Canillas <javier@dowhile0.org>
Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: NJens Axboe <axboe@kernel.dk>
Acked-by: NJes Sorensen <Jes.Sorensen@gmail.com>
Acked-by: NJiri Kosina <jkosina@suse.cz>
Acked-by: NJiri Pirko <jiri@resnulli.us>
Acked-by: NJoe Perches <joe@perches.com>
Acked-by: NJoerg Roedel (SUSE) <jroedel@suse.de>
Acked-by: NJohan Hovold <johan@kernel.org>
Acked-by: NJosh Poimboeuf <jpoimboe@redhat.com>
Acked-by: NJuergen Gross <jgross@suse.com>
Acked-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Acked-by: NK. Y. Srinivasan <kys@microsoft.com>
Acked-by: NKhalid Aziz <khalid@gonehiking.org>
Acked-by: NKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Acked-by: NLaura Abbott <laura@labbott.name>
Acked-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NLeon Romanovsky <leon@kernel.org>
Acked-by: NLinus Walleij (Linaro) <linus.walleij@linaro.org>
Acked-by: NLv Zheng <zetalog@gmail.com>
Acked-by: NMartin K. Petersen (Oracle) <martin.petersen@oracle.com>
Acked-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NMasami Hiramatsu <mhiramat@kernel.org>
Acked-by: NMel Gorman <mgorman@suse.de>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NMichal Hocko <mhocko@suse.com>
Acked-by: NMike Marshall <hubcap@omnibond.com>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NNeil Armstrong <narmstrong@baylibre.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Acked-by: NPablo Neira Ayuso <pablo@netfilter.org>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Acked-by: NPaul Burton <paul.burton@mips.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: NPeter Zijlstra <peterz@infradead.org>
Acked-by: NRafael J. Wysocki <rafael@kernel.org>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Acked-by: NRichard Weinberger <richard@nod.at>
Acked-by: NRik van Riel <riel@surriel.com>
Acked-by: NRob Clark <robdclark@gmail.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NSebastian Reichel (Collabora) <sre@kernel.org>
Acked-by: NShawn Guo <shawnguo@kernel.org>
Acked-by: NShuah Khan <shuahkh@osg.samsung.com>
Acked-by: NSimon Horman <horms@verge.net.au>
Acked-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: NSven Eckelmann <sven@narfation.org>
Acked-by: NTakashi Iwai (SUSE) <tiwai@suse.de>
Acked-by: NTejun Heo <tj@kernel.org>
Acked-by: NThierry Reding <thierry.reding@gmail.com>
Acked-by: NTony Luck <tony.luck@gmail.com>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NVinod Koul <vkoul@kernel.org>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NVivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: NWei Yongjun <weiyongjun1@huawei.com>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/process/index.rst

@@ -25,6 +25,7 @@ Below are the essential guides that every developer should read.
    submitting-patches
    coding-style
    email-clients
+   kernel-enforcement-statement
 
 Other guides to the community that are of interest to most developers are: 
 

Documentation/process/kernel-enforcement-statement.rst

+Linux Kernel Enforcement Statement
+----------------------------------
+
+As developers of the Linux kernel, we have a keen interest in how our software
+is used and how the license for our software is enforced.  Compliance with the
+reciprocal sharing obligations of GPL-2.0 is critical to the long-term
+sustainability of our software and community.
+
+Although there is a right to enforce the separate copyright interests in the
+contributions made to our community, we share an interest in ensuring that
+individual enforcement actions are conducted in a manner that benefits our
+community and do not have an unintended negative impact on the health and
+growth of our software ecosystem.  In order to deter unhelpful enforcement
+actions, we agree that it is in the best interests of our development
+community to undertake the following commitment to users of the Linux kernel
+on behalf of ourselves and any successors to our copyright interests:
+
+    Notwithstanding the termination provisions of the GPL-2.0, we agree that
+    it is in the best interests of our development community to adopt the
+    following provisions of GPL-3.0 as additional permissions under our
+    license with respect to any non-defensive assertion of rights under the
+    license.
+
+	However, if you cease all violation of this License, then your license
+	from a particular copyright holder is reinstated (a) provisionally,
+	unless and until the copyright holder explicitly and finally
+	terminates your license, and (b) permanently, if the copyright holder
+	fails to notify you of the violation by some reasonable means prior to
+	60 days after the cessation.
+
+	Moreover, your license from a particular copyright holder is
+	reinstated permanently if the copyright holder notifies you of the
+	violation by some reasonable means, this is the first time you have
+	received notice of violation of this License (for any work) from that
+	copyright holder, and you cure the violation prior to 30 days after
+	your receipt of the notice.
+
+Our intent in providing these assurances is to encourage more use of the
+software.  We want companies and individuals to use, modify and distribute
+this software.  We want to work with users in an open and transparent way to
+eliminate any uncertainty about our expectations regarding compliance or
+enforcement that might limit adoption of our software.  We view legal action
+as a last resort, to be initiated only when other community efforts have
+failed to resolve the problem.
+
+Finally, once a non-compliance issue is resolved, we hope the user will feel
+welcome to join us in our efforts on this project.  Working together, we will
+be stronger.
+
+Except where noted below, we speak only for ourselves, and not for any company
+we might work for today, have in the past, or will in the future.
+
+  - Bjorn Andersson (Linaro)
+  - Andrea Arcangeli (Red Hat)
+  - Neil Armstrong
+  - Jens Axboe
+  - Pablo Neira Ayuso
+  - Khalid Aziz
+  - Ralf Baechle
+  - Felipe Balbi
+  - Arnd Bergmann
+  - Ard Biesheuvel
+  - Paolo Bonzini (Red Hat)
+  - Christian Borntraeger
+  - Mark Brown (Linaro)
+  - Paul Burton
+  - Javier Martinez Canillas
+  - Rob Clark
+  - Jonathan Corbet
+  - Vivien Didelot (Savoir-faire Linux)
+  - Hans de Goede (Red Hat)
+  - Mel Gorman (SUSE)
+  - Sven Eckelmann
+  - Alex Elder (Linaro)
+  - Fabio Estevam
+  - Larry Finger
+  - Bhumika Goyal
+  - Andy Gross
+  - Juergen Gross
+  - Shawn Guo
+  - Ulf Hansson
+  - Tejun Heo
+  - Rob Herring
+  - Masami Hiramatsu
+  - Michal Hocko
+  - Simon Horman
+  - Johan Hovold (Hovold Consulting AB)
+  - Christophe JAILLET
+  - Olof Johansson
+  - Lee Jones (Linaro)
+  - Heiner Kallweit
+  - Srinivas Kandagatla
+  - Jan Kara
+  - Shuah Khan (Samsung)
+  - David Kershner
+  - Jaegeuk Kim
+  - Namhyung Kim
+  - Colin Ian King
+  - Jeff Kirsher
+  - Greg Kroah-Hartman (Linux Foundation)
+  - Christian König
+  - Vinod Koul
+  - Krzysztof Kozlowski
+  - Viresh Kumar
+  - Aneesh Kumar K.V
+  - Julia Lawall
+  - Doug Ledford (Red Hat)
+  - Chuck Lever (Oracle)
+  - Daniel Lezcano
+  - Shaohua Li
+  - Xin Long (Red Hat)
+  - Tony Luck
+  - Mike Marshall
+  - Chris Mason
+  - Paul E. McKenney
+  - David S. Miller
+  - Ingo Molnar
+  - Kuninori Morimoto
+  - Borislav Petkov
+  - Jiri Pirko
+  - Josh Poimboeuf
+  - Sebastian Reichel (Collabora)
+  - Guenter Roeck
+  - Joerg Roedel
+  - Leon Romanovsky
+  - Steven Rostedt (VMware)
+  - Ivan Safonov
+  - Ivan Safonov
+  - Anna Schumaker
+  - Jes Sorensen
+  - K.Y. Srinivasan
+  - Heiko Stuebner
+  - Jiri Kosina (SUSE)
+  - Dmitry Torokhov
+  - Linus Torvalds
+  - Thierry Reding
+  - Rik van Riel
+  - Geert Uytterhoeven (Glider bvba)
+  - Daniel Vetter
+  - Linus Walleij
+  - Richard Weinberger
+  - Dan Williams
+  - Rafael J. Wysocki
+  - Arvind Yadav
+  - Masahiro Yamada
+  - Wei Yongjun
+  - Lv Zheng