linux-kernel - Re: [PATCH v4 13/15] uapi: hyperv: Add mshv driver headers defining hypervisor ABIs

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Date:   Thu, 5 Oct 2023 03:59:05 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Wei Liu <wei.liu@...nel.org>,
        Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arch@...r.kernel.org, patches@...ts.linux.dev,
        mikelley@...rosoft.com, kys@...rosoft.com, haiyangz@...rosoft.com,
        decui@...rosoft.com, apais@...ux.microsoft.com,
        Tianyu.Lan@...rosoft.com, ssengar@...ux.microsoft.com,
        mukeshrathor@...rosoft.com, stanislav.kinsburskiy@...il.com,
        jinankjain@...ux.microsoft.com, vkuznets@...hat.com,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, hpa@...or.com, will@...nel.org,
        catalin.marinas@....com
Subject: Re: [PATCH v4 13/15] uapi: hyperv: Add mshv driver headers defining
 hypervisor ABIs

On Wed, Oct 04, 2023 at 08:11:13AM +0200, Greg KH wrote:
> On Tue, Oct 03, 2023 at 11:29:42PM +0000, Wei Liu wrote:
> > > > > > diff --git a/include/uapi/hyperv/hvgdk.h b/include/uapi/hyperv/hvgdk.h
> > > > > > new file mode 100644
> > > > > > index 000000000000..9bcbb7d902b2
> > > > > > --- /dev/null
> > > > > > +++ b/include/uapi/hyperv/hvgdk.h
> > > > > > @@ -0,0 +1,41 @@
> > > > > > +/* SPDX-License-Identifier: MIT */
> > > > > 
> > > > > That's usually not a good license for a new uapi .h file, why did you
> > > > > choose this one?
> > > > > 
> > > > 
> > > > This is chosen so that other Microsoft developers who don't normally
> > > > work on Linux can review this code.
> > > 
> > > Sorry, but that's not how kernel development is done.  Please fix your
> > > internal review processes and use the correct uapi header file license.
> > > 
> > > If your lawyers insist on this license, that's fine, but please have
> > > them provide a signed-off-by on the patch that adds it and have it
> > > documented why it is this license in the changelog AND in a comment in
> > > the file so we can understand what is going on with it.
> > > 
> > 
> > We went through an internal review with our legal counsel regarding the
> > MIT license. We have an approval from them.
> > 
> > Let me ask if using something like "GPL-2.0 WITH Linux-syscall-note OR
> > MIT" is possible.
> 
> That marking makes no sense from a legal point of view, please work with
> your lawyers as it seems they do not understand license descriptions
> very well :(

I've got the clearance to use "GPL-2.0 WITH Linux-syscall-note". We can
close on this issue. Thank you for the review.

Thanks,
Wei.

> 
> thanks,
> 
> greg k-h