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docs: Document pcie-root requirement for q35 guests

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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> </p>
<pre> <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; &lt;controller type='pci' model='pcie-root-port'/&gt;
&lt;controller type='pci' model='pcie-root-port'/&gt;</pre> &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, if you expect to hotplug up to three PCI Express devices,
either emulated or assigned from the host. That's all the either emulated or assigned from the host. That's all the
information you need to provide: libvirt will fill in 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>
<p> <p>
Note that if you're adding PCI controllers to a guest and at Note that if you're adding PCI controllers to a guest and at