2:37 a.m.
Since Qemu commit 8646d9c (Support IR-only mode without DMA translation) version 7.1.0,
Qemu support dma-translation attribute for Intel IOMMU. This patch adds a new attribute
dma_translation to configure this.
Sandesh Patel (3):
Conf: add dma_translation attribute to iommu
qemu: format dma-translation on intel-iommu command line
tests: add test for intel-iommu dma-translation attribute
docs/formatdomain.rst | 7 ++++
src/conf/domain_conf.c | 15 ++++++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++
src/qemu/qemu_capabilities.c | 2 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 1 +
src/qemu/qemu_validate.c | 6 +++
.../caps_7.1.0_x86_64.xml | 1 +
.../caps_7.2.0_x86_64+hvf.xml | 1 +
.../caps_7.2.0_x86_64.xml | 1 +
.../caps_8.0.0_x86_64.xml | 1 +
.../caps_8.1.0_x86_64.xml | 1 +
.../caps_8.2.0_x86_64.xml | 1 +
.../caps_9.0.0_x86_64.xml | 1 +
.../caps_9.1.0_x86_64.xml | 1 +
.../migration-out-nbd-bitmaps-in.xml | 1 +
...l-iommu-dma-translation.x86_64-latest.args | 34 +++++++++++++++++
...el-iommu-dma-translation.x86_64-latest.xml | 1 +
.../intel-iommu-dma-translation.xml | 37 +++++++++++++++++++
tests/qemuxmlconftest.c | 1 +
21 files changed, 120 insertions(+)
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
create mode 120000 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
--
2.22.3
2:37 a.m.
New subject: [PATCH 1/3] Conf: add dma_translation attribute to iommu
Add dma_translation attribute to iommu to enable/disable dma traslation
for intel-iommu
Signed-off-by: Sandesh Patel <sandesh.patel(a)nutanix.com>
---
docs/formatdomain.rst | 7 +++++++
src/conf/domain_conf.c | 15 +++++++++++++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++++
4 files changed, 28 insertions(+)
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index c56b739b23..a037ab65e4 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -8611,6 +8611,13 @@ Example:
mapping larger iova addresses in the guest. :since:`Since 6.5.0` (QEMU/KVM
only)
+ ``dma_translation``
+ The ``dma_translation`` attribute with possible values ``on`` and ``off`` can
+ be used to turn off the dma translation for IOMMU. It is useful when only
+ interrupt remapping is required but dma translation overhead is unwanted, for
+ example to efficiently enable more than 255 vCPUs.
+ :since:`Since 10.6.1` (QEMU/KVM 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 86b563fbfb..d950921667 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -13931,6 +13931,10 @@ virDomainIOMMUDefParseXML(virDomainXMLOption *xmlopt,
if (virXMLPropUInt(driver, "aw_bits", 10, VIR_XML_PROP_NONE,
&iommu->aw_bits) < 0)
return NULL;
+
+ if (virXMLPropTristateSwitch(driver, "dma_translation",
VIR_XML_PROP_NONE,
+ &iommu->dma_translation) < 0)
+ return NULL;
}
if (virDomainDeviceInfoParseXML(xmlopt, node, ctxt,
@@ -21467,6 +21471,13 @@ virDomainIOMMUDefCheckABIStability(virDomainIOMMUDef *src,
dst->aw_bits, src->aw_bits);
return false;
}
+ if (src->dma_translation != dst->dma_translation) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Target domain IOMMU device dma translation '%1$s'
does not match source '%2$s'"),
+ virTristateSwitchTypeToString(dst->dma_translation),
+ virTristateSwitchTypeToString(src->dma_translation));
+ return false;
+ }
return virDomainDeviceInfoCheckABIStability(&src->info, &dst->info);
}
@@ -27451,6 +27462,10 @@ virDomainIOMMUDefFormat(virBuffer *buf,
virBufferAsprintf(&driverAttrBuf, " aw_bits='%d'",
iommu->aw_bits);
}
+ if (iommu->dma_translation != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(&driverAttrBuf, " dma_translation='%s'",
+ virTristateSwitchTypeToString(iommu->dma_translation));
+ }
virXMLFormatElement(&childBuf, "driver", &driverAttrBuf, NULL);
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 95ddf5470e..eae621f900 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2928,6 +2928,7 @@ struct _virDomainIOMMUDef {
virTristateSwitch iotlb;
unsigned int aw_bits;
virDomainDeviceInfo info;
+ virTristateSwitch dma_translation;
};
typedef enum {
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index 7d58dce465..05ba697924 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -6100,6 +6100,11 @@
<ref name="uint8"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="dma_translation">
+ <ref name="virOnOff"/>
+ </attribute>
+ </optional>
</element>
</optional>
<optional>
--
2.22.3
3:07 a.m.
New subject: [PATCH 1/3] Conf: add dma_translation attribute to iommu
On 8/7/24 09:37, Sandesh Patel wrote:
Add dma_translation attribute to iommu to enable/disable dma
traslation
for intel-iommu
Signed-off-by: Sandesh Patel <sandesh.patel(a)nutanix.com>
---
docs/formatdomain.rst | 7 +++++++
src/conf/domain_conf.c | 15 +++++++++++++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++++
4 files changed, 28 insertions(+)
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index c56b739b23..a037ab65e4 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -8611,6 +8611,13 @@ Example:
mapping larger iova addresses in the guest. :since:`Since 6.5.0` (QEMU/KVM
only)
+ ``dma_translation``
+ The ``dma_translation`` attribute with possible values ``on`` and ``off`` can
+ be used to turn off the dma translation for IOMMU. It is useful when only
+ interrupt remapping is required but dma translation overhead is unwanted, for
+ example to efficiently enable more than 255 vCPUs.
+ :since:`Since 10.6.1` (QEMU/KVM only)
This must be 10.7.0. The micro is reserved for maintenance releases
(which we don't really do anymore).
https://libvirt.org/downloads.html#release-numbering
Oh, and we often put xml2xml testcase here to prove parsing & formatting
works. This also drags in xml2cmd testcase, but that's okay. In fact, it
makes it more obvious how cmd line is changed once we start generating
it (patch 3/3).
Michal
2:37 a.m.
New subject: [PATCH 2/3] qemu: format dma-translation on intel-iommu command line
Add dma-translation attribute to qemu command line if specified in
domain conf.
Signed-off-by: Sandesh Patel <sandesh.patel(a)nutanix.com>
---
src/qemu/qemu_capabilities.c | 2 ++
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 1 +
src/qemu/qemu_validate.c | 6 ++++++
4 files changed, 10 insertions(+)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 29dfe8d35a..2f66a49711 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -713,6 +713,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
"sev-snp-guest", /* QEMU_CAPS_SEV_SNP_GUEST */
"netdev.user", /* QEMU_CAPS_NETDEV_USER */
"acpi-erst", /* QEMU_CAPS_DEVICE_ACPI_ERST */
+ "intel-iommu.dma-translation", /*
QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION */
);
@@ -1516,6 +1517,7 @@ static struct virQEMUCapsDevicePropsFlags
virQEMUCapsDevicePropsIntelIOMMU[] = {
{ "eim", QEMU_CAPS_INTEL_IOMMU_EIM, NULL },
{ "device-iotlb", QEMU_CAPS_INTEL_IOMMU_DEVICE_IOTLB, NULL },
{ "aw-bits", QEMU_CAPS_INTEL_IOMMU_AW_BITS, NULL },
+ { "dma-translation", QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsMCH[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 51d951771d..edeb870e01 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -692,6 +692,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check
*/
QEMU_CAPS_SEV_SNP_GUEST, /* -object sev-snp-guest */
QEMU_CAPS_NETDEV_USER, /* -netdev user */
QEMU_CAPS_DEVICE_ACPI_ERST, /* -device acpi-erst */
+ QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION, /* intel-iommu.dma-translation */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f15e6bda1e..28914c9c34 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6209,6 +6209,7 @@ qemuBuildIOMMUCommandLine(virCommand *cmd,
"S:eim", qemuOnOffAuto(iommu->eim),
"T:device-iotlb", iommu->iotlb,
"z:aw-bits", iommu->aw_bits,
+ "T:dma-translation",
iommu->dma_translation,
NULL) < 0)
return -1;
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 0e8f0f977f..b885fe7c77 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -5094,6 +5094,12 @@ qemuValidateDomainDeviceDefIOMMU(const virDomainIOMMUDef *iommu,
_("iommu: aw_bits is not supported with this QEMU
binary"));
return -1;
}
+ if (iommu->dma_translation != VIR_TRISTATE_SWITCH_ABSENT &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("iommu: updating dma translation is not supported with this
QEMU binary"));
+ return -1;
+ }
return 0;
}
--
2.22.3
2:37 a.m.
New subject: [PATCH 3/3] tests: add test for intel-iommu dma-translation attribute
Test data for the intel-iommu dma-translation attribute added previously
Signed-off-by: Sandesh Patel <sandesh.patel(a)nutanix.com>
---
.../caps_7.1.0_x86_64.xml | 1 +
.../caps_7.2.0_x86_64+hvf.xml | 1 +
.../caps_7.2.0_x86_64.xml | 1 +
.../caps_8.0.0_x86_64.xml | 1 +
.../caps_8.1.0_x86_64.xml | 1 +
.../caps_8.2.0_x86_64.xml | 1 +
.../caps_9.0.0_x86_64.xml | 1 +
.../caps_9.1.0_x86_64.xml | 1 +
.../migration-out-nbd-bitmaps-in.xml | 1 +
...l-iommu-dma-translation.x86_64-latest.args | 34 +++++++++++++++++
...el-iommu-dma-translation.x86_64-latest.xml | 1 +
.../intel-iommu-dma-translation.xml | 37 +++++++++++++++++++
tests/qemuxmlconftest.c | 1 +
13 files changed, 82 insertions(+)
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
create mode 120000 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
diff --git a/tests/qemucapabilitiesdata/caps_7.1.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_7.1.0_x86_64.xml
index 555120e958..9737e3d083 100644
--- a/tests/qemucapabilitiesdata/caps_7.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_7.1.0_x86_64.xml
@@ -192,6 +192,7 @@
<flag name='usb-mtp'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>7001000</version>
<microcodeVersion>43100244</microcodeVersion>
<package>v7.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_7.2.0_x86_64+hvf.xml
b/tests/qemucapabilitiesdata/caps_7.2.0_x86_64+hvf.xml
index ca25a5549e..55dcbf203e 100644
--- a/tests/qemucapabilitiesdata/caps_7.2.0_x86_64+hvf.xml
+++ b/tests/qemucapabilitiesdata/caps_7.2.0_x86_64+hvf.xml
@@ -196,6 +196,7 @@
<flag name='usb-mtp'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>7002000</version>
<microcodeVersion>43100245</microcodeVersion>
<package>v7.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_7.2.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_7.2.0_x86_64.xml
index 8b835e6187..1253c860ee 100644
--- a/tests/qemucapabilitiesdata/caps_7.2.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_7.2.0_x86_64.xml
@@ -196,6 +196,7 @@
<flag name='usb-mtp'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>7002000</version>
<microcodeVersion>43100245</microcodeVersion>
<package>v7.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
index 3ac9e96066..d3901fef05 100644
--- a/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
@@ -200,6 +200,7 @@
<flag name='usb-mtp'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>8000000</version>
<microcodeVersion>43100244</microcodeVersion>
<package>v8.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
index 476195d147..f8a9993ede 100644
--- a/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
@@ -202,6 +202,7 @@
<flag name='usb-mtp'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>8001000</version>
<microcodeVersion>43100245</microcodeVersion>
<package>v8.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
index 25cb22aafc..43d7105c2d 100644
--- a/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
@@ -205,6 +205,7 @@
<flag name='virtio-sound'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>8002000</version>
<microcodeVersion>43100246</microcodeVersion>
<package>v8.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
index b646377dec..e96af86a92 100644
--- a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
@@ -207,6 +207,7 @@
<flag name='virtio-sound'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>9000000</version>
<microcodeVersion>43100245</microcodeVersion>
<package>v9.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
index dc548583a5..e17c22d776 100644
--- a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
@@ -205,6 +205,7 @@
<flag name='virtio-sound'/>
<flag name='netdev.user'/>
<flag name='acpi-erst'/>
+ <flag name='intel-iommu.dma-translation'/>
<version>9000050</version>
<microcodeVersion>43100246</microcodeVersion>
<package>v9.0.0-1388-g80e8f06021-dirty</package>
diff --git a/tests/qemustatusxml2xmldata/migration-out-nbd-bitmaps-in.xml
b/tests/qemustatusxml2xmldata/migration-out-nbd-bitmaps-in.xml
index 4ee44ffbd4..15fa35620d 100644
--- a/tests/qemustatusxml2xmldata/migration-out-nbd-bitmaps-in.xml
+++ b/tests/qemustatusxml2xmldata/migration-out-nbd-bitmaps-in.xml
@@ -261,6 +261,7 @@
<flag name='vhost-user-blk'/>
<flag name='cpu-max'/>
<flag name='migration-param.block-bitmap-mapping'/>
+ <flag name='intel-iommu.dma-translation'/>
</qemuCaps>
<job type='none' async='migration out' phase='perform3'
flags='0x42' asyncStarted='0'>
<disk dev='hda' migrating='no'/>
diff --git a/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
b/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
new file mode 100644
index 0000000000..cc7f819f5c
--- /dev/null
+++ b/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object
'{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}'
\
+-machine
q35,usb=off,kernel_irqchip=split,dump-guest-core=off,memory-backend=pc.ram,acpi=off \
+-accel kvm \
+-cpu qemu64 \
+-m size=219136k \
+-object
'{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}'
\
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-device
'{"driver":"intel-iommu","id":"iommu0","intremap":"on","dma-translation":false}'
\
+-audiodev
'{"id":"audio1","driver":"none"}' \
+-global ICH9-LPC.noreboot=off \
+-watchdog-action reset \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
b/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
new file mode 120000
index 0000000000..a35a254f7a
--- /dev/null
+++ b/tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
@@ -0,0 +1 @@
+intel-iommu-dma-translation.xml
\ No newline at end of file
diff --git a/tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
b/tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
new file mode 100644
index 0000000000..9b4debca0a
--- /dev/null
+++ b/tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
@@ -0,0 +1,37 @@
+<domain type='kvm'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='x86_64' machine='q35'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <ioapic driver='qemu'/>
+ </features>
+ <cpu mode='custom' match='exact' check='none'>
+ <model fallback='forbid'>qemu64</model>
+ </cpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <controller type='pci' index='0' model='pcie-root'/>
+ <controller type='usb' index='0' model='none'/>
+ <controller type='sata' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00'
slot='0x1f' function='0x2'/>
+ </controller>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <watchdog model='itco' action='reset'/>
+ <memballoon model='none'/>
+ <iommu model='intel'>
+ <driver intremap='on' dma_translation='off'/>
+ </iommu>
+ </devices>
+</domain>
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index 4fccc06fcd..41453480a9 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -2713,6 +2713,7 @@ mymain(void)
DO_TEST_CAPS_LATEST("intel-iommu-eim");
DO_TEST_CAPS_LATEST("intel-iommu-device-iotlb");
DO_TEST_CAPS_LATEST("intel-iommu-aw-bits");
+ DO_TEST_CAPS_LATEST("intel-iommu-dma-translation");
DO_TEST_CAPS_LATEST_PARSE_ERROR("intel-iommu-wrong-machine");
DO_TEST_CAPS_ARCH_LATEST("iommu-smmuv3", "aarch64");
DO_TEST_CAPS_LATEST("virtio-iommu-x86_64");
--
2.22.3
3:07 a.m.
On 8/7/24 09:37, Sandesh Patel wrote:
Since Qemu commit 8646d9c (Support IR-only mode without DMA
translation) version 7.1.0,
Qemu support dma-translation attribute for Intel IOMMU. This patch adds a new attribute
dma_translation to configure this.
Sandesh Patel (3):
Conf: add dma_translation attribute to iommu
qemu: format dma-translation on intel-iommu command line
tests: add test for intel-iommu dma-translation attribute
docs/formatdomain.rst | 7 ++++
src/conf/domain_conf.c | 15 ++++++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++
src/qemu/qemu_capabilities.c | 2 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 1 +
src/qemu/qemu_validate.c | 6 +++
.../caps_7.1.0_x86_64.xml | 1 +
.../caps_7.2.0_x86_64+hvf.xml | 1 +
.../caps_7.2.0_x86_64.xml | 1 +
.../caps_8.0.0_x86_64.xml | 1 +
.../caps_8.1.0_x86_64.xml | 1 +
.../caps_8.2.0_x86_64.xml | 1 +
.../caps_9.0.0_x86_64.xml | 1 +
.../caps_9.1.0_x86_64.xml | 1 +
.../migration-out-nbd-bitmaps-in.xml | 1 +
...l-iommu-dma-translation.x86_64-latest.args | 34 +++++++++++++++++
...el-iommu-dma-translation.x86_64-latest.xml | 1 +
.../intel-iommu-dma-translation.xml | 37 +++++++++++++++++++
tests/qemuxmlconftest.c | 1 +
21 files changed, 120 insertions(+)
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
create mode 120000 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
We split things a bit differently, but I'll do that before merging.
Reviewed-by: Michal Privoznik <mprivozn(a)redhat.com>
and merged. Congratulations on your first libvirt contribution!
Michal
3:17 a.m.
On 9 Aug 2024, at 1:37 PM, Michal Prívozník <mprivozn(a)redhat.com> wrote:
!-------------------------------------------------------------------|
CAUTION: External Email
|-------------------------------------------------------------------!
On 8/7/24 09:37, Sandesh Patel wrote:
Since Qemu commit 8646d9c (Support IR-only mode without DMA translation) version 7.1.0,
Qemu support dma-translation attribute for Intel IOMMU. This patch adds a new attribute
dma_translation to configure this.
Sandesh Patel (3):
Conf: add dma_translation attribute to iommu
qemu: format dma-translation on intel-iommu command line
tests: add test for intel-iommu dma-translation attribute
docs/formatdomain.rst | 7 ++++
src/conf/domain_conf.c | 15 ++++++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++
src/qemu/qemu_capabilities.c | 2 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 1 +
src/qemu/qemu_validate.c | 6 +++
.../caps_7.1.0_x86_64.xml | 1 +
.../caps_7.2.0_x86_64+hvf.xml | 1 +
.../caps_7.2.0_x86_64.xml | 1 +
.../caps_8.0.0_x86_64.xml | 1 +
.../caps_8.1.0_x86_64.xml | 1 +
.../caps_8.2.0_x86_64.xml | 1 +
.../caps_9.0.0_x86_64.xml | 1 +
.../caps_9.1.0_x86_64.xml | 1 +
.../migration-out-nbd-bitmaps-in.xml | 1 +
...l-iommu-dma-translation.x86_64-latest.args | 34 +++++++++++++++++
...el-iommu-dma-translation.x86_64-latest.xml | 1 +
.../intel-iommu-dma-translation.xml | 37 +++++++++++++++++++
tests/qemuxmlconftest.c | 1 +
21 files changed, 120 insertions(+)
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.args
create mode 120000 tests/qemuxmlconfdata/intel-iommu-dma-translation.x86_64-latest.xml
create mode 100644 tests/qemuxmlconfdata/intel-iommu-dma-translation.xml
We split things a bit differently, but I'll do that before merging.
Reviewed-by: Michal Privoznik
<mprivozn@redhat.com<mailto:mprivozn@redhat.com>>
and merged. Congratulations on your first libvirt contribution!
Michal
Thanks Michal
Regards,
Sandesh
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participants (2)
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Michal Prívozník -
Sandesh Patel