Re: [PATCH v39 11/24] x86/sgx: Add SGX enclave driver

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On Mon, Oct 05, 2020 at 01:50:30PM +0200, Greg KH wrote:
> On Mon, Oct 05, 2020 at 02:42:50PM +0300, Jarkko Sakkinen wrote:
> > On Mon, Oct 05, 2020 at 09:45:54AM +0100, Christoph Hellwig wrote:
> > > On Sat, Oct 03, 2020 at 04:39:25PM +0200, Greg KH wrote:
> > > > > @@ -0,0 +1,173 @@
> > > > > +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
> > > > 
> > > > You use gpl-only header files in this file, so how in the world can it
> > > > be bsd-3 licensed?
> > > > 
> > > > Please get your legal department to agree with this, after you explain
> > > > to them how you are mixing gpl2-only code in with this file.
> > > > 
> > > > > +// Copyright(c) 2016-18 Intel Corporation.
> > > > 
> > > > Dates are hard to get right :(
> > > 
> > > As is comment formatting apparently.  Don't use // comments for anything
> > > but the SPDX header, please.
> > 
> > I'll bring some context to this.
> > 
> > When I moved into using SPDX, I took the example from places where I saw
> > also the copyright using "//". That's the reason for the choice.
> > 
> > I.e.
> > 
> > $ git grep "// Copyright" | wc -l
> > 2123
> > 
> > I don't care, which one to use, just wondering is it done in the wrong
> > way in all these sites?
> 
> Probably, but I know at least one subsystem requires their headers to be
> in this manner.  There's no accounting for taste :)

This discussion is a bit confusing [*], so I'll just ask from Git:

➜  linux-sgx (master) ✔ git --no-pager grep "\/\/ Copyright" arch/x86
arch/x86/kernel/cpu/sgx/driver.c:// Copyright(c) 2016-20 Intel Corporation.
arch/x86/kernel/cpu/sgx/encl.c:// Copyright(c) 2016-20 Intel Corporation.
arch/x86/kernel/cpu/sgx/ioctl.c:// Copyright(c) 2016-20 Intel Corporation.
arch/x86/kernel/cpu/sgx/main.c:// Copyright(c) 2016-20 Intel Corporation.

OK, now I think I know what to do :-)

> thanks,
> 
> greg k-h

[*] One thing I've been wondering for a long time is that, why new code
should have the copyright platters in the first place? I get it for
pre-Git era but now there is a cryptographic log of authority.

Copyright platters, remarking the authors to the header and
MODULE_AUTHOR() macro are the three things that I just do not get in the
modern times.

/Jarkko





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