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[bug#41785] [PATCH] DRAFT services: Add 'hurd-in-vm service-type'.

From: Marius Bakke
Subject: [bug#41785] [PATCH] DRAFT services: Add 'hurd-in-vm service-type'.
Date: Thu, 11 Jun 2020 22:01:25 +0200

Mathieu Othacehe <> writes:

> So, I don't get why would we need to run a Hurd VM inside a VM. I've
> been struggling a lot with running nested layers of virtualization (for
> system generation before the recent patches), and the result is often
> too slow to be really usable.

Note that recent processors support nested layers of virtualization
natively with little overhead, but it's disabled by default.

For an Intel processor, it can be enabled by adding this to your system

  (kernel-arguments (cons "kvm_intel.nested=1" %default-kernel-arguments))

The corresponding AMD kernel module is called "kvm_amd".

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