Re: [libvirt] [PATCHv4 3/6] conf: add <driver intremap> to <iommu>

Add a new attribute to control interrupt remapping. https://bugzilla.redhat.com/show_bug.cgi?id=1427005 --- docs/formatdomain.html.in | 24 +++++++++++++- docs/schemas/domaincommon.rng | 9 +++++ src/conf/domain_conf.c | 38 +++++++++++++++++++--- src/conf/domain_conf.h | 1 + .../qemuxml2argv-intel-iommu-ioapic.xml | 4 ++- 5 files changed, 70 insertions(+), 6 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 6669e71..ca98f0e 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -7395,7 +7395,9 @@ qemu-kvm -net nic,model=? /dev/null <pre> ... &lt;devices&gt; - &lt;iommu model='intel'/&gt; + &lt;iommu model='intel'&gt; + &lt;driver intremap='on'/&gt; + &lt;/iommu&gt; &lt;/devices&gt; ... </pre> @@ -7406,6 +7408,26 @@ qemu-kvm -net nic,model=? /dev/null Currently only the <code>intel</code> model is supported. </p> </dd> + <dt><code>driver</code></dt> + <dd> + <p> + The <code>driver</code> subelement can be used to configure + additional options: + </p> + <dl> + <dt><code>intremap</code></dt> + <dd> + <p> + The <code>intremap</code> attribute with possible values + <code>on</code> and <code>off</code> can be used to + turn on interrupt remapping, a part of the VT-d functionality. + Currently this requires split I/O APIC + (<code>&lt;ioapic driver='qemu'/&gt;</code>)

+ <span class="since">Since 3.4.0</span> (QEMU/KVM only) + </p> + </dd> + </dl> + </dd> </dl> <h3><a name="seclabel">Security label</a></h3>