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From time to time we are asked which PCI addresses are reserved
in QEMU. Let's document them in one place, it's easier than
reconstructing the list from the code each time.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Improving the zPCI example by choosing more distinct values and
adding explanation for fid.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
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>
The idea behind this document is to show, with actual examples,
that users should not expect PCI addresses in the domain XML and
in the guest OS to match.
The first zPCI example already serves this purpose perfectly, so
in the interest of keeping the page as brief and easy to digest
as possible the second one is removed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
The section about VFIO devices is kept separate from the rest
because it's less about domain XML and guest OS disagreeing on the
PCI address of a device, and more about which of the two PCI
addresses in the domain XML is even relevant to the guest OS.
The section on zPCI addresses, on the other hand, falls squarely
in the "more complex cases" category, so it should live in the
corresponding section.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Indent all code snippets by the same number of spaces, and don't
embed the :: marker in the line preceding a code block.
This commit is best viewed with 'git show -w'.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Add some information on how pci address work on s390x.
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This document describes the relationship between PCI addresses as
seen in the domain XML and by the guest OS, which is a topic that
people get confused by time and time again.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
