Re: [PATCH v1 5/5] i386: Hyper-V VMBus ACPI DSDT entry

[Jon Doron]

On 07/04/2020, Maciej S. Szmigiero wrote:
> On 07.04.2020 20:56, Roman Kagan wrote:
> > On Mon, Apr 06, 2020 at 11:20:39AM +0300, Jon Doron wrote:
> > > Well I want it to be merged in :-)
> >
> > Hmm I'm curious why, it has little to offer over virtio.
> >
> > Anyway the series you've posted seems to be based on a fairly old
> > version.
> >
> > The one in openvz repo is more recent.  It's still in need for
> > improvement, too, but should be testable at least.

Well I have implemented the hyperv synthetic kernel debugger interface, 
but on Windows 10 it requires to have a working VMBus (it's not really 
using it, but without a function vmbus that will answer to the initiate 
contact then the kdnet will simply be stuck in a loop.

With the synthetic kernel debugger interface you can debug older OS 
(Win7 up to latest Win10). The benefit is that its much faster than all 
other interfaces.

In addition to that Michael Kelley from Microsoft has informed us that 
Microsoft might be dropped the synthetic kernel debugger interface 
sometime in the future, and it seems like the new mode is simply to use 
hvnet device for the communication (which is again much faster).

Cheers,
-- Jon.
> Isn't the one at
> https://src.openvz.org/projects/UP/repos/qemu/commits?until=refs%2Fheads%2Fvmbus
> the latest one?
>
> It seems to be last changed in October 2019 - is there a
> later one?
>
> > Thanks,
> > Roman.
>
> Thanks,
> Maciej