docs: Update introduction in pci-addresses.rst

Changing the introduction to bring the idea of this document better across.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Andrea Bolognani 2020-04-17 14:27:33 +02:00
parent 52b51b55a2
commit c889b2d614

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@ -4,9 +4,12 @@ PCI addresses in domain XML and guest OS
.. contents::
When discussing PCI addresses, it's important to understand the
relationship between the addresses that can be seen in the domain XML
and those that are visible inside the guest OS.
Looking at the configuration for a guest, it would be reasonable
to expect that each PCI device would show up in the guest OS with
a PCI address that matches the one present in the corresponding
``<address>`` element of the domain XML, but that's not guaranteed
to happen and will in fact not be the case in all but the simplest
scenarios.
Simple cases