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From: "Joshua R. Poulson" <jrp@pun.org>
Date: Wed, 14 Mar 2018 09:42:42 -0700
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Subject: Re: [PATCH v3 1/7] x86/hyper-v: move hyperv.h out of uapi
To: Christoph Hellwig <hch@infradead.org>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>, kvm@vger.kernel.org,
        x86@kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
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        Mohammed Gamal <mmorsy@redhat.com>, Cathy Avery <cavery@redhat.com>,
        Bandan Das <bsd@redhat.com>, linux-kernel@vger.kernel.org
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On Wed, Mar 14, 2018 at 9:13 AM, Christoph Hellwig <hch@infradead.org> wrote:
> On Fri, Mar 09, 2018 at 03:02:43PM +0100, Vitaly Kuznetsov wrote:
>> hyperv.h is not part of uapi, there are no (known) users outside of kernel.
>> We are making changes to this file to match current Hyper-V TLFS and we
>> don't want to maintain backwards compatibility.
>>
>> Move the file renaming to hyperv-tlfs.h to avoid confusing it with
>> mshyperv.h. In future, all definitions from TLFS should go to it and
>> all kernel objects should go to mshyperv.h or include/linux/hyperv.h.
>
> What is TLFS?  And hows does it differe from mshyperv.h?

The TLFS is the "Top-Level Functional Specification" for Hyper-V.

https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs