Re: [PATCH 00/14] Add ARM64 support for MSHV accelerator

[Wei Liu <wei.liu@kernel.org>]

On Thu, Mar 12, 2026 at 06:20:10AM +0100, Mohamed Mediouni wrote:
> 
> 
> > On 11. Mar 2026, at 18:12, Wei Liu <wei.liu@kernel.org> wrote:
> > 
> > On Wed, Mar 11, 2026 at 06:02:26PM +0100, Mohamed Mediouni wrote:
> >> 
> >> 
> >>> On 11. Mar 2026, at 17:54, Alex Bennée <alex.bennee@linaro.org> wrote:
> >>> 
> >>> "Anirudh Rayabharam (Microsoft)" <anirudh@anirudhrb.com> writes:
> >>> 
> >>>> This series adds ARM64 guest support to the MSHV (Microsoft Hypervisor)
> >>>> accelerator, enabling QEMU to run aarch64 VMs on Microsoft's hypervisor
> >>>> using the mshv Linux kernel module.
> >>> 
> >>> Does GitLab (or anything we plug into it) support runners on Arm64 with
> >>> HyperV and a Linux Dom0?
> >>> 
> >>> I looks like we would need a dedicated runner to defend the
> >>> functionality on CI.
> >> 
> >> 
> >> The MSHV license doesn’t allow for any use outside of Azure Kubernetes Service,
> >> despite MSHV (for x86) being public.
> >> 
> >> And Dom0 is technically not required as there’s L1VH, but that’s even less documented to
> >> the outside and not set up for more local use - but hopefully will make its way to Windows 
> >> client at some point :/
> > 
> > Direct Virtualization (the marketing name for L1VH) will become
> > generally available on Azure at some point (hopefully within this
> > calendar year). I am not sure about Windows client though.
> 
> Hi,
> 
> Could you ask if it’d be possible to have Windows client as an L1VH host, if even just Insider builds?
> 
> Either as a Windows Hypervisor Platform privilege (even no save/restore is okay, just being able
> to enable the privilege is good enough for testing), or through HCS for WSL2 (or just Hyper-V VMs)?
> 

I can pass on the question. Don't hold your breath though -- it is not
something engineers decide.

> Because at this point that’d solve the testability issue…

I agree. The more accessible this technology is, the better.

Wei