Hi Luca,

On Jun 30, 2023, at 05:12, Luca Fancellu <luca.fance...@arm.com> wrote:
> 
> The "dom0less" feature was intended to be the feature where a domU
> domain could be launched without the control domain (Dom0)
> intervention, however the name seems to suggest that Dom0 cannot
> be part of the configuration, while instead it's a possible use case.

Thanks for your interest in Xen boot integrity. Please see the 2018 domB RFC:
https://lists.xenproject.org/archives/html/xen-devel/2018-06/msg01306.html

At Xen Summit 2018 (Nanjing) and Xen Summit 2019 (Chicago), OpenXT contributors 
made a case to Xen-on-Arm contributors for the architectural unification of 
incumbent dom0less (Arm) and the domB (x86) proposal for improving Xen boot 
integrity.

> To avoid that, rename the "dom0less" configuration with the name
> "hyperlaunch", that is less misleading.

2018-2022 work on Xen launch integrity, thanks to Apertus and Star Lab: 
https://wiki.xenproject.org/wiki/Hyperlaunch
https://www.theregister.com/2022/12/16/xen_4_17_hyperlaunch/

2023 Hyperlaunch design session last week, thanks to Apertus and AMD:
https://lists.xenproject.org/archives/html/xen-devel/2023-06/msg01870.html

> Signed-off-by: Luca Fancellu <luca.fance...@arm.com>

If Arm is now ready to invest engineering resources into new Xen launch 
integrity features for security and safety-critical use cases, that is exciting 
news, 5 years into the on-again-off-again bootstrapped Hyperlaunch project! The 
roadmap would benefit from new funding.

Would you like to attend the next Xen working group call for Hyperlaunch?

Rich

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