11:20 a.m.
From: Ján Tomko <jtomko(a)redhat.com>
For the newly supported AMD device.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
docs/formatdomain.rst | 8 ++++++++
src/conf/domain_conf.c | 30 +++++++++++++++++++++++++++++
src/conf/domain_conf.h | 2 ++
src/conf/schemas/domaincommon.rng | 10 ++++++++++
tests/qemuxmlconfdata/amd-iommu.xml | 2 +-
5 files changed, 51 insertions(+), 1 deletion(-)
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index 1fa814931f..7af14c656f 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -9092,6 +9092,14 @@ Example:
example to efficiently enable more than 255 vCPUs.
:since:`Since 10.7.0` (QEMU/KVM and ``intel`` model only)
+ ``passthrough``
+ Enable passthrough. In this mode, DMA read/writes are not translated.
+ :since:`Since 11.5.0` (QEMU/KVM and ``amd`` model only)
+
+ ``xtsup``
+ Enable x2APIC mode. Useful for higher number of guest CPUs.
+ :since:`Since 11.5.0` (QEMU/KVM and ``amd`` model only)
+
The ``virtio`` IOMMU devices can further have ``address`` element as described
in `Device addresses`_ (address has to by type of ``pci``).
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 2e7454f4d6..c20fe0e241 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -14333,6 +14333,14 @@ virDomainIOMMUDefParseXML(virDomainXMLOption *xmlopt,
if (virXMLPropTristateSwitch(driver, "dma_translation",
VIR_XML_PROP_NONE,
&iommu->dma_translation) < 0)
return NULL;
+
+ if (virXMLPropTristateSwitch(driver, "xtsup", VIR_XML_PROP_NONE,
+ &iommu->xtsup) < 0)
+ return NULL;
+
+ if (virXMLPropTristateSwitch(driver, "passthrough", VIR_XML_PROP_NONE,
+ &iommu->pt) < 0)
+ return NULL;
}
if (virDomainDeviceInfoParseXML(xmlopt, node, ctxt,
@@ -21963,6 +21971,20 @@ virDomainIOMMUDefCheckABIStability(virDomainIOMMUDef *src,
virTristateSwitchTypeToString(src->dma_translation));
return false;
}
+ if (src->pt != dst->pt) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Target domain IOMMU device dma translation '%1$s'
does not match source '%2$s'"),
+ virTristateSwitchTypeToString(dst->pt),
+ virTristateSwitchTypeToString(src->pt));
+ return false;
+ }
+ if (src->xtsup != dst->xtsup) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Target domain IOMMU device dma translation '%1$s'
does not match source '%2$s'"),
+ virTristateSwitchTypeToString(dst->xtsup),
+ virTristateSwitchTypeToString(src->xtsup));
+ return false;
+ }
return virDomainDeviceInfoCheckABIStability(&src->info, &dst->info);
}
@@ -28190,6 +28212,14 @@ virDomainIOMMUDefFormat(virBuffer *buf,
virBufferAsprintf(&driverAttrBuf, " dma_translation='%s'",
virTristateSwitchTypeToString(iommu->dma_translation));
}
+ if (iommu->pt != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(&driverAttrBuf, " passthrough='%s'",
+ virTristateSwitchTypeToString(iommu->pt));
+ }
+ if (iommu->xtsup != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(&driverAttrBuf, " xtsup='%s'",
+ virTristateSwitchTypeToString(iommu->xtsup));
+ }
virXMLFormatElement(&childBuf, "driver", &driverAttrBuf, NULL);
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index bcac061aa6..d1ee598eb0 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3019,6 +3019,8 @@ struct _virDomainIOMMUDef {
unsigned int aw_bits;
virDomainDeviceInfo info;
virTristateSwitch dma_translation;
+ virTristateSwitch xtsup;
+ virTristateSwitch pt;
};
typedef enum {
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index f135e6f1d7..b180ab46c7 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -6226,6 +6226,16 @@
<ref name="virOnOff"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="xtsup">
+ <ref name="virOnOff"/>
+ </attribute>
+ </optional>
+ <optional>
+ <attribute name="passthrough">
+ <ref name="virOnOff"/>
+ </attribute>
+ </optional>
</element>
</optional>
<optional>
diff --git a/tests/qemuxmlconfdata/amd-iommu.xml b/tests/qemuxmlconfdata/amd-iommu.xml
index 0668ed4237..4ad79ce4ae 100644
--- a/tests/qemuxmlconfdata/amd-iommu.xml
+++ b/tests/qemuxmlconfdata/amd-iommu.xml
@@ -32,7 +32,7 @@
<watchdog model='itco' action='reset'/>
<memballoon model='none'/>
<iommu model='amd'>
- <driver intremap='on' iotlb='on'/>
+ <driver intremap='on' iotlb='on' passthrough='on'
xtsup='on'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x01' function='0x0'/>
</iommu>
</devices>
--
2.49.0