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From: Lars Kurth <lars.kurth@citrix.com>
To: Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien.grall@arm.com>
Cc: "tee-dev@lists.linaro.org" <tee-dev@lists.linaro.org>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [Xen-devel] [PATCH v6 02/10] xen/arm: optee: add OP-TEE header files
Date: Wed, 19 Jun 2019 08:20:35 +0000
Message-ID: <FFA82A74-1DD5-48EE-B326-E298BDC23B1D@citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1906171026050.2072@sstabellini-ThinkPad-T480s>



On 17/06/2019, 18:28, "Stefano Stabellini" <sstabellini@kernel.org> wrote:

    On Mon, 17 Jun 2019, Julien Grall wrote:
    > On 17/06/2019 17:28, Stefano Stabellini wrote:
    > > Looking at https://www.gnu.org/licenses/license-list.en.html and also
    > > looking at the usage in the Linux kernel, I am pretty sure it is
    > > compatible. However, given that the Xen hypervisor as a whole is GPLv2,
    > > I think it would be more precise to say:
    > > 
    > > SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    > 
    > Well, this is imported from OP-TEE. So I don't think we have the freedom to
    > change this copyright header here...
    
    Interesting point: I would have thought that given that this is a GPLv2
    project, if we went with SPDX, all files would need to have a
    GPL-2.0-only tag on them, plus, optionally, an OR XXX clause.
    
    Something for Lars to investigate.

That is not really how this works. The resulting Xen binary would be GPL 2.0, while individual parts of the source tree can be of different licenses.   
    
    > What I was asking is whether this is OK to import BSD-2-Clause code in Xen.
    > You seem to agree that it should be possible.
    
    Yep. The problematic BSD license is the BSD-4-Clause.
    
It is definitely OK: see http://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=CONTRIBUTING

Lars 

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  reply index

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-11 18:46 [Xen-devel] [PATCH v6 00/10] TEE mediator (and OP-TEE) support in XEN Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 01/10] xen/arm: add generic TEE mediator framework Volodymyr Babchuk
2019-06-17 16:11   ` Stefano Stabellini
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 02/10] xen/arm: optee: add OP-TEE header files Volodymyr Babchuk
2019-06-15 18:39   ` Julien Grall
2019-06-17 15:24     ` Julien Grall
2019-06-17 16:28       ` Stefano Stabellini
2019-06-17 16:34         ` Julien Grall
2019-06-17 17:28           ` Stefano Stabellini
2019-06-19  8:20             ` Lars Kurth [this message]
2019-06-19 10:26               ` Julien Grall
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 03/10] xen/arm: optee: add OP-TEE mediator skeleton Volodymyr Babchuk
2019-06-19 11:01   ` Julien Grall
2019-06-19 11:03     ` Julien Grall
2019-06-19 15:44       ` Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 04/10] xen/arm: optee: add fast calls handling Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 05/10] xen/arm: optee: add std call handling Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 06/10] xen/arm: optee: add support for RPC SHM buffers Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 07/10] xen/arm: optee: add support for arbitrary shared memory Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 08/10] xen/arm: optee: add support for RPC commands Volodymyr Babchuk
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 09/10] tools/arm: tee: add "tee" option for xl.cfg Volodymyr Babchuk
2019-06-15 19:10   ` Julien Grall
2019-06-18 11:19     ` Volodymyr Babchuk
2019-06-18 12:49       ` Julien Grall
2019-06-18 14:30         ` Volodymyr Babchuk
2019-06-18 15:19           ` Julien Grall
2019-06-18 15:23             ` Volodymyr Babchuk
2019-06-19 10:30               ` Julien Grall
2019-06-11 18:46 ` [Xen-devel] [PATCH v6 10/10] tools/arm: optee: create optee firmware node in DT if tee=optee Volodymyr Babchuk
2019-06-19 11:08 ` [Xen-devel] [PATCH v6 00/10] TEE mediator (and OP-TEE) support in XEN Julien Grall

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