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TUD-OS / NRE

NOVA runtime environment (official branch)
GNU General Public License v2.0
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NOVA Kernel Queston #49

Closed lonnietc closed 3 years ago

lonnietc commented 3 years ago

Hi All,

I am very happy that NRE will compile and build against NOVA.

NRE compiles and links against (updates within a few days):

https://github.com/TUD-OS/NOVA/tree/1ab3e588b8808146783772288f34905600dd21c2

but Udo has another NOVA repo that also seems to have updates (through 2021 within a few days) and the hypervisor compiles for x86_64 as well but will not compile against NRE:

https://github.com/udosteinberg/NOVA

I wanted to find out if there is a master NOVA branch somewhere that has all of these latest updates and fixes which will compile against NRE.

Once question that I have is as to which repo is the latest NOVA code since it seems that we have multiple NOVA branches floating about?

Any thoughts?

Cheers and have a great day.

Nils-TUD commented 3 years ago

There are indeed multiple versions. The ones I know of are:

  1. https://github.com/udosteinberg/NOVA: maintained by Udo Steinberg, the original author of NOVA, at Bedrock Systems.
  2. https://github.com/alex-ab/NOVA: maintained by Alexander Böttcher at Genode Labs.
  3. Hedron: a NOVA fork maintained by Julian Stecklina at Cyberus Technology.
  4. https://github.com/TUD-OS/NOVA: the version NRE uses (not maintained).

At this point, NRE can only work with the NOVA repo in TUD-OS. I'm not sure how much the three others diverged, but I don't expect it to be a little tweak here and there, but really significant changes to adapt NRE to a new kernel ABI.

lonnietc commented 3 years ago

Absolutely agree as I have come across an number of different NOVA versions during my recent Internet researching and travels.

For now, I will just stay with what works with NRE so that I can focus on other components and look into the hypervisor upgrades in in the future if all goes well.

Thanks