Re: [RFC PATCH 04/18] virt/mshv: request version ioctl

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On Wed, Apr 07, 2021 at 04:02:56PM +0200, Vitaly Kuznetsov wrote:
> Wei Liu <wei.liu@xxxxxxxxxx> writes:
> 
> > On Wed, Apr 07, 2021 at 09:38:21AM +0200, Vitaly Kuznetsov wrote:
> >
> >> One more though: it is probably a good idea to introduce selftests for
> >> /dev/mshv (similar to KVM's selftests in
> >> /tools/testing/selftests/kvm). Selftests don't really need a stable ABI
> >> as they live in the same linux.git and can be updated in the same patch
> >> series which changes /dev/mshv behavior. Selftests are very useful for
> >> checking there are no regressions, especially in the situation when
> >> there's no publicly available userspace for /dev/mshv.
> >
> > I think this can wait until we merge the first implementation in tree.
> > There are still a lot of moving parts. Our (currently limited) internal
> > test cases need more cleaning up before they are ready. I certainly
> > don't want to distract Nuno from getting the foundation right.
> >
> 
> I'm absolutely fine with this approach, selftests are a nice add-on, not
> a requirement for the initial implementation. Also, to make them more
> useful to mere mortals, a doc on how to run Linux as root Hyper-V
> partition would come handy)

Making this system easier for others to use and consume is on our radar.
Currently you need Windows bootloader and a not-yet-released loader to
load the hypervisor. We're making progress in bringing in GRUB.

Needless to say there are technical and non-technical challenges for
this work, so don't expect it to happen very soon. :-)

Wei.

> 
> -- 
> Vitaly
> 



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