Some files seem missing when trying to use scripts/generate_binding.py

[MouriNaruto]

In the latest scripts/generate_binding.py, we know we need the following files in Linux kernel source code to generate the bindings.

• include/hyperv/hvgdk_mini.h
• include/hyperv/hvgdk.h
• include/hyperv/hvhdk_mini.h
• include/hyperv/hvhdk.h
• include/linux/mshv.h

I am confused because I cannot find these files in the latest mainline Linux kernel source code. So, I need some help.

Kenji Mouri

[liuw]

Please see here: https://lore.kernel.org/linux-hyperv/1696010501-24584-1-git-send-email-nunodasneves@linux.microsoft.com/T/#t

We're still in the process of usptreaming our code.

[MouriNaruto]

@liuw

Thanks, I have found them in the link you provided successfully. The original hvgdk and hvhdk headers in the link is MIT licensed. I am really excited about that because I am planning a book which talks about how to develop UEFI applications and Unikernel style OS for Hyper-V Gen 2 VMs.

But I also hope standalone version of hvgdk and hvhdk headers can be existed. (For example, use something portable headers like stdint.h to define integers, and keep the original Hyper-V header coding style instead of Linux kernel coding style.) I think it will help more Hyper-V users.

Kenji Mouri

[NunoDasNeves]

But I also hope standalone version of hvgdk and hvhdk headers can be existed. (For example, use something portable headers like stdint.h to define integers, and keep the original Hyper-V header coding style instead of Linux kernel coding style.) I think it will help more Hyper-V users.

Yes, we'd like that too, hoping to get there eventually - I don't have any info regarding timeframe unfortunately.
Right now we only have the "Linux-ized" versions of the headers.

[MouriNaruto]

Yes, we'd like that too, hoping to get there eventually - I don't have any info regarding timeframe unfortunately.
Right now we only have the "Linux-ized" versions of the headers.

@NunoDasNeves

I think it's the best news for me which I have ever heard for this domain in the current stage. But I want to add some notes may off-topic but necessary.

• Thanks for the mshv patch which created and submitted by you. I have learned a lot from the MIT definitions provided in that patch. (I think the newest version I know for that patch should be https://github.com/microsoft/OHCL-Linux-Kernel/tree/e9017243ba9b424f6516c4b206f454a1c2585fd2/include/uapi/hyperv.)
• Your explicit reply which provided here is the good start for the hope of that goal. I have created https://github.com/ProjectMile/Mile.HyperV to learn Microsoft's definitions for Hyper-V guest interfaces from several permissive license sources since last year because I don't want to see Hyper-V users who need that solution like me will be worry for no usable solutions like 2023's me. In the recently, the firmware for Hyper-V Generation 2 virtual machines (https://github.com/microsoft/mu_msvm) has been open-sourced. I have learned a lot and updated my headers. I am deeply grateful for that. I hope I can use 100% of Microsoft's official Hyper-V guest definitions instead my headers for the foreseeable future.
• I hope I can create a lightweight HAL (H may mean the Hypervisor instead of Hardware, lol) library for the current sources and finally make these open-source for my book, my hobby, and more people be helped.

Kenji Mouri