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docs: Document pcie-root requirement for q35 guests 

When you add a bunch of pcie-root-port controllers to a q35 guest
in order to have hotplug capabilities, you also need to make sure
you're adding the pcie-root controller at the same time or you
will get an error. Document this fact.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Andrea Bolognani 2018-02-19 17:37:17 +01:00
parent a4b37cd0f1
commit 210385c3ee
1 changed files with 5 additions and 1 deletions
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6
docs/pci-hotplug.html.in
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@ -72,6 +72,7 @@
</p>
<pre>
&lt;controller type='pci' model='pcie-root'/&gt;
&lt;controller type='pci' model='pcie-root-port'/&gt;
&lt;controller type='pci' model='pcie-root-port'/&gt;
&lt;controller type='pci' model='pcie-root-port'/&gt;</pre>
@ -80,7 +81,10 @@
if you expect to hotplug up to three PCI Express devices,
either emulated or assigned from the host. That's all the
information you need to provide: libvirt will fill in the
remaining details automatically.
remaining details automatically. Note that you need to add
the <code>pcie-root</code> controller along with the
<code>pcie-root-port</code> controllers or you will get an
error.
</p>
<p>
Note that if you're adding PCI controllers to a guest and at