docs: drvbhyve: add guest-specific nodes section

Add a section with guest-specific notes. Start with LPC slot address
information for the Windows guests.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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Roman Bogorodskiy committed 2025-11-10 18:23:04 +01:00
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@@ -683,3 +683,19 @@ on FreeBSD.
Users must configure the device for passthrough manually either by
using ``devctl(8)`` or by setting ``pptdevs`` in ``loader.conf(5)``.
Please refer to the ``vmm(4)`` manual page for more details.
Guest-specific considerations
-----------------------------
Windows
~~~~~~~
For Windows guests, it is recommended to have the LPC controller on slot 31.
As the libvirt driver allocates slot 1 for the LPC controller by default,
the address must be specified explicitly:
::
<controller type='isa' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x0'/>
</controller>