Hi Bram,

On 10/05/2021 16:19, Bram Hooimeijer wrote:
> Dear Jailhouse community, 
> 
> Is there anyone who has tried to get Windows running in a Jailhouse cell?
> 
> Given that Windows is often used as HMI, it would be interesting to see 
> whether it would be possible to use it alongside Jailhouse.
> 
> What are the fundamental limitations one would run into?

You MUST emulate every trap that Windows would cause, as you have no
chance to adjust Windows, as we can do it with Linux. And Windows
'expects' a certain defined environment to be present at boot, such as
ACPI / Bios / EFI. But we arrive in Jailhouse with in a void
environment. E.g., there's no regular hardware discovery available for
platform devices.

I could rather imagine to run Windows in the root-cell rather than in a
non-root cell. But that would require to port the driver to Windows and
is probably combined with a huge amount of pain. And who knows what
Windows is doing with your platform while it is running…

Maybe there's a better chance with Windows for ARM, but I never looked
into that.

  Ralf

> 
> Thanks, 
> 
> Best regards, Bram Hooimeijer
> 

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